/tmp/ruby-build.20181107195637.23913 ~
/tmp/ruby-build.20181107195637.23913/ruby-2.3.8 /tmp/ruby-build.20181107195637.23913 ~
checking for ruby... false
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.ext/include/x86_64-linux/ruby/config.h updated
configure: ruby library version = 2.3.0
configure: creating ./config.status
config.status: creating GNUmakefile
config.status: creating Makefile
config.status: creating ruby-2.3.pc
	CC = gcc
	LD = ld
	LDSHARED = gcc -shared
	CFLAGS = -O3 -fno-fast-math -ggdb3 -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wunused-variable -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration -Wdeprecated-declarations -Wno-packed-bitfield-compat -std=iso9899:1999
	XCFLAGS = -D_FORTIFY_SOURCE=2 -fstack-protector -fno-strict-overflow -fvisibility=hidden -DRUBY_EXPORT -fPIE
	CPPFLAGS = -I/home/duybui/.rbenv/versions/2.3.8/include    -I. -I.ext/include/x86_64-linux -I./include -I.
	DLDFLAGS = -fstack-protector -pie
	SOLIBS =
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/8/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 8.2.0-9' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-8 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie --with-system-zlib --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 8.2.0 (Debian 8.2.0-9)
copying dummy probes.h
compiling main.c
compiling dmydln.c
compiling miniinit.c
compiling dmyext.c
compiling miniprelude.c
compiling array.c
compiling bignum.c
compiling class.c
compiling compar.c
compiling complex.c
In file included from array.c:14:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from bignum.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from class.c:26:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling dir.c
compiling dln_find.c
In file included from complex.c:14:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling encoding.c
array.c: In function ‘rb_ary_rindex’:
array.c:1532:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
      if (!rb_equal(e, val)) break;
         ^
array.c:1533:4: note: here
    case Qtrue:
    ^~~~
array.c: In function ‘rb_ary_index’:
array.c:1469:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
      if (!rb_equal(e, val)) break;
         ^
array.c:1470:4: note: here
    case Qtrue:
    ^~~~
compiling enum.c
In file included from dir.c:14:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from encoding.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
encoding.c: In function ‘rb_enc_get_index’:
encoding.c:793:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (NIL_P(obj)) break;
     ^
encoding.c:794:7: note: here
       case T_DATA:
       ^~~~
encoding.c: In function ‘enc_capable’:
encoding.c:746:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (is_data_encoding(obj)) return TRUE;
     ^
encoding.c:747:7: note: here
       default:
       ^~~~~~~
In file included from enum.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling enumerator.c
In file included from enumerator.c:15:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling error.c
compiling eval.c
compiling load.c
In file included from error.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from eval.c:14:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
eval.c: In function ‘rb_raise_jump’:
eval.c:776:8: warning: unused variable ‘mid’ [-Wunused-variable]
     ID mid = me->called_id;
        ^~~
In file included from load.c:5:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling proc.c
load.c: In function ‘search_required’:
load.c:924:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (ft) {
     ^
load.c:929:7: note: here
       case 1:
       ^~~~
In file included from method.h:14,
                 from vm_core.h:62,
                 from eval_intern.h:5,
                 from proc.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling file.c
compiling gc.c
compiling hash.c
In file included from file.c:26:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
file.c: In function ‘rb_stat_dev_major’:
file.c:501:13: warning: In the GNU C Library, "major" is defined
 by <sys/sysmacros.h>. For historical compatibility, it is
 currently defined by <sys/types.h> as well, but we plan to
 remove this soon. To use "major", include <sys/sysmacros.h>
 directly. If you did not intend to use a system-defined macro
 "major", you should undefine it after including <sys/types.h>.
     return INT2NUM(major(get_stat(self)->st_dev));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
file.c: In function ‘rb_stat_dev_minor’:
file.c:522:13: warning: In the GNU C Library, "minor" is defined
 by <sys/sysmacros.h>. For historical compatibility, it is
 currently defined by <sys/types.h> as well, but we plan to
 remove this soon. To use "minor", include <sys/sysmacros.h>
 directly. If you did not intend to use a system-defined macro
 "minor", you should undefine it after including <sys/types.h>.
     return INT2NUM(minor(get_stat(self)->st_dev));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
file.c: In function ‘rb_stat_rdev_major’:
file.c:665:13: warning: In the GNU C Library, "major" is defined
 by <sys/sysmacros.h>. For historical compatibility, it is
 currently defined by <sys/types.h> as well, but we plan to
 remove this soon. To use "major", include <sys/sysmacros.h>
 directly. If you did not intend to use a system-defined macro
 "major", you should undefine it after including <sys/types.h>.
     return DEVT2NUM(major(get_stat(self)->st_rdev));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
file.c: In function ‘rb_stat_rdev_minor’:
file.c:686:13: warning: In the GNU C Library, "minor" is defined
 by <sys/sysmacros.h>. For historical compatibility, it is
 currently defined by <sys/types.h> as well, but we plan to
 remove this soon. To use "minor", include <sys/sysmacros.h>
 directly. If you did not intend to use a system-defined macro
 "minor", you should undefine it after including <sys/types.h>.
     return DEVT2NUM(minor(get_stat(self)->st_rdev));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from gc.c:17:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
gc.c: In function ‘make_io_zombie’:
gc.c:2052:32: warning: cast between incompatible function types from ‘int (*)(rb_io_t *)’ {aka ‘int (*)(struct rb_io_t *)’} to ‘void (*)(void *)’ [-Wcast-function-type]
     make_zombie(objspace, obj, (void (*)(void*))rb_io_fptr_finalize, fptr);
                                ^
In file included from hash.c:14:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
hash.c: In function ‘rb_hash_s_create’:
hash.c:658:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
       val = RARRAY_AREF(v, 1);
hash.c:659:5: note: here
     case 1:
     ^~~~
compiling inits.c
In file included from inits.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling io.c
compiling marshal.c
compiling math.c
In file included from io.c:14:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling node.c
In file included from math.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from marshal.c:16:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
marshal.c: In function ‘r_object0’:
marshal.c:1749:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (bs & 1) --dst;
       ^
marshal.c:1750:9: note: here
         default: bs = 0; break;
         ^~~~~~~
marshal.c: In function ‘load_mantissa’:
marshal.c:365:19: warning: this statement may fall through [-Wimplicit-fallthrough=]
        default: m = *buf++ & 0xff;
                 ~~^~~~~~~~~~~~~~~
marshal.c:367:8: note: here
        case 3: m = (m << 8) | (*buf++ & 0xff);
        ^~~~
marshal.c:367:18: warning: this statement may fall through [-Wimplicit-fallthrough=]
        case 3: m = (m << 8) | (*buf++ & 0xff);
                ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
marshal.c:370:8: note: here
        case 2: m = (m << 8) | (*buf++ & 0xff);
        ^~~~
marshal.c:370:18: warning: this statement may fall through [-Wimplicit-fallthrough=]
        case 2: m = (m << 8) | (*buf++ & 0xff);
                ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
marshal.c:373:8: note: here
        case 1: m = (m << 8) | (*buf++ & 0xff);
        ^~~~
compiling numeric.c
In file included from method.h:14,
                 from vm_core.h:62,
                 from node.c:13:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
io.c: In function ‘rb_io_s_popen’:
io.c:6281:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
  pmode = argv[1];
  ~~~~~~^~~~~~~~~
io.c:6282:7: note: here
       case 1:
       ^~~~
In file included from numeric.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling object.c
In file included from object.c:14:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from ./include/ruby.h:33,
                 from internal.h:15,
                 from object.c:14:
object.c: In function ‘rb_f_integer’:
./include/ruby/ruby.h:689:23: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define RB_NUM2INT(x) rb_num2int_inline(x)
                       ^~~~~~~~~~~~~~~~~~~~
./include/ruby/ruby.h:701:21: note: in expansion of macro ‘RB_NUM2INT’
 #define NUM2INT(x)  RB_NUM2INT(x)
                     ^~~~~~~~~~
object.c:2740:9: note: in expansion of macro ‘NUM2INT’
  base = NUM2INT(argv[1]);
         ^~~~~~~
object.c:2741:7: note: here
       case 1:
       ^~~~
compiling pack.c
compiling parse.c
In file included from pack.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from parse.y:27:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling process.c
parse.y: In function ‘ruby_yyparse’:
parse.y:407:43: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define rb_node_newnode(type, a1, a2, a3) node_newnode(parser, (type), (a1), (a2), (a3))
                                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
node.h:356:30: note: in expansion of macro ‘rb_node_newnode’
 #define NEW_NODE(t,a0,a1,a2) rb_node_newnode((t),(VALUE)(a0),(VALUE)(a1),(VALUE)(a2))
                              ^~~~~~~~~~~~~~~
parse.y:4007:15: note: in expansion of macro ‘NEW_NODE’
        node = NEW_NODE(NODE_DSTR, STR_NEW0(), 1, NEW_LIST(node));
               ^~~~~~~~
parse.y:4008:6: note: here
      case NODE_DSTR:
      ^~~~
parse.y:340:22: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define yyerror(msg) parser_yyerror(parser, (msg))
                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
parse.y:5028:5: note: in expansion of macro ‘yyerror’
     yyerror("can't define singleton method for literals");
     ^~~~~~~
parse.y:5029:10: note: here
          default:
          ^~~~~~~
parse.y: In function ‘parser_yylex’:
parse.y:8207:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (peek('.') == (c == '&')) {
      ^
parse.y:8213:8: note: here
        default:
        ^~~~~~~
parse.y:8215:16: warning: this statement may fall through [-Wimplicit-fallthrough=]
   lex_nextline = lex_lastline;
parse.y:8216:8: note: here
        case -1:  /* EOF no decrement*/
        ^~~~
parse.y:8561:12: warning: this statement may fall through [-Wimplicit-fallthrough=]
  paren_nest--;
parse.y:8562:7: note: here
       case '}':
       ^~~~
parse.y: In function ‘parser_here_document’:
parse.y:6870:23: warning: this statement may fall through [-Wimplicit-fallthrough=]
       if (--pend == p || pend[-1] != '\r') {
           ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
parse.y:6874:5: note: here
     case '\r':
     ^~~~
parse.y: In function ‘parser_read_escape’:
parse.y:6063:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ((c = nextc()) != '-') {
     ^
parse.y:6067:7: note: here
       case 'c':
       ^~~~
parse.y: In function ‘parse_gvar’:
parse.y:7929:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (!parser_is_identchar()) {
      ^
parse.y:7939:7: note: here
       case '0':
       ^~~~
parse.y: In function ‘is_static_content’:
parse.y:9754:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (!(node = node->nd_head)) break;
     ^
parse.y:9755:7: note: here
       case NODE_ARRAY:
       ^~~~
In file included from parse.y:28:
parse.y: In function ‘literal_concat_gen’:
node.h:276:20: warning: this statement may fall through [-Wimplicit-fallthrough=]
     RNODE(n)->flags=((RNODE(n)->flags&~NODE_TYPEMASK)|((((unsigned long)(t))<<NODE_TYPESHIFT)&NODE_TYPEMASK))
                    ^
parse.y:8970:6: note: in expansion of macro ‘nd_set_type’
      nd_set_type(head, NODE_DSTR);
      ^~~~~~~~~~~
parse.y:8971:4: note: here
    case NODE_DSTR:
    ^~~~
In file included from process.c:14:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
process.c: In function ‘handle_fork_error’:
process.c:3243:24: warning: cast between incompatible function types from ‘void (*)(int)’ to ‘VALUE (*)()’ {aka ‘long unsigned int (*)()’} [-Wcast-function-type]
             rb_protect((VALUE (*)())rb_thread_sleep, 1, &state);
                        ^
compiling random.c
compiling range.c
In file included from random.c:62:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from random.c:1448:
siphash.c: In function ‘ruby_sip_hash24’:
siphash.c:430:26: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define OR_BYTE(n) (last |= ((uint64_t) end[n]) << ((n) * 8))
                    ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
siphash.c:444:6: note: in expansion of macro ‘OR_BYTE’
      OR_BYTE(6);
      ^~~~~~~
siphash.c:445:2: note: here
  case 6:
  ^~~~
siphash.c:430:26: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define OR_BYTE(n) (last |= ((uint64_t) end[n]) << ((n) * 8))
                    ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
siphash.c:446:6: note: in expansion of macro ‘OR_BYTE’
      OR_BYTE(5);
      ^~~~~~~
siphash.c:447:2: note: here
  case 5:
  ^~~~
siphash.c:430:26: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define OR_BYTE(n) (last |= ((uint64_t) end[n]) << ((n) * 8))
                    ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
siphash.c:448:6: note: in expansion of macro ‘OR_BYTE’
      OR_BYTE(4);
      ^~~~~~~
siphash.c:449:2: note: here
  case 4:
  ^~~~
siphash.c:430:26: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define OR_BYTE(n) (last |= ((uint64_t) end[n]) << ((n) * 8))
                    ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
siphash.c:461:6: note: in expansion of macro ‘OR_BYTE’
      OR_BYTE(2);
      ^~~~~~~
siphash.c:462:2: note: here
  case 2:
  ^~~~
siphash.c:430:26: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define OR_BYTE(n) (last |= ((uint64_t) end[n]) << ((n) * 8))
                    ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
siphash.c:463:6: note: in expansion of macro ‘OR_BYTE’
      OR_BYTE(1);
      ^~~~~~~
siphash.c:464:2: note: here
  case 1:
  ^~~~
random.c: In function ‘rand_range’:
random.c:1221:21: warning: this statement may fall through [-Wimplicit-fallthrough=]
       case T_FLOAT: {
                     ^
random.c:1227:7: note: here
       default:
       ^~~~~~~
random.c: In function ‘random_load’:
random.c:747:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
  seed = ary[2];
  ~~~~~^~~~~~~~
random.c:748:7: note: here
       case 2:
       ^~~~
random.c:749:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
  left = ary[1];
  ~~~~~^~~~~~~~
random.c:750:7: note: here
       case 1:
       ^~~~
In file included from range.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling rational.c
compiling re.c
In file included from rational.c:8:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling regcomp.c
In file included from re.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
re.c: In function ‘unescape_nonascii’:
re.c:2310:17: warning: this statement may fall through [-Wimplicit-fallthrough=]
                 {
                 ^
re.c:2321:15: note: here
               case '0': /* \0, \0O, \0OO */
               ^~~~
re.c: In function ‘read_escaped_byte’:
re.c:2083:22: warning: this statement may fall through [-Wimplicit-fallthrough=]
         if (p == end || *p++ != '-') {
             ~~~~~~~~~^~~~~~~~~~~~~~
re.c:2087:7: note: here
       case 'c': /* \cX, \c\M-X */
       ^~~~
compiling regenc.c
compiling regerror.c
compiling regexec.c
compiling regparse.c
compiling regsyntax.c
compiling ruby.c
regparse.c: In function ‘parse_enclose’:
regparse.c:5183:10: warning: this statement may fall through [-Wimplicit-fallthrough=]
       if (IS_SYNTAX_OP2(env->syntax, ONIG_SYN_OP2_OPTION_PERL)) {
          ^
regparse.c:5211:5: note: here
     case '-': case 'i': case 'm': case 's': case 'x':
     ^~~~
In file included from ruby.c:18:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling safe.c
ruby.c: In function ‘proc_options’:
ruby.c:856:20: warning: this statement may fall through [-Wimplicit-fallthrough=]
      opt->do_print = TRUE;
ruby.c:858:4: note: here
    case 'n':
    ^~~~
ruby.c:882:19: warning: this statement may fall through [-Wimplicit-fallthrough=]
      opt->verbose = 1;
      ~~~~~~~~~~~~~^~~
ruby.c:883:4: note: here
    case 'w':
    ^~~~
ruby.c:1194:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
      if (!s[1])
         ^
ruby.c:1197:4: note: here
    default:
    ^~~~~~~
compiling signal.c
In file included from method.h:14,
                 from vm_core.h:62,
                 from safe.c:20:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from signal.c:14:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
signal.c: In function ‘ruby_signal’:
signal.c:596:31: warning: cast between incompatible function types from ‘ruby_sighandler_t’ {aka ‘void (*)(int)’} to ‘void (*)(int,  siginfo_t *, void *)’ {aka ‘void (*)(int,  struct <anonymous> *, void *)’} [-Wcast-function-type]
         sigact.sa_sigaction = (ruby_sigaction_t*)handler;
                               ^
signal.c:625:9: warning: cast between incompatible function types from ‘void (*)(int,  siginfo_t *, void *)’ {aka ‘void (*)(int,  struct <anonymous> *, void *)’} to ‘void (*)(int)’ [-Wcast-function-type]
  return (sighandler_t)old.sa_sigaction;
         ^
compiling sprintf.c
signal.c: In function ‘default_handler’:
signal.c:1063:16: warning: cast between incompatible function types from ‘void (*)(int,  siginfo_t *, void *)’ {aka ‘void (*)(int,  struct <anonymous> *, void *)’} to ‘void (*)(int)’ [-Wcast-function-type]
         func = (sighandler_t)sigbus;
                ^
signal.c:1068:16: warning: cast between incompatible function types from ‘void (*)(int,  siginfo_t *, void *)’ {aka ‘void (*)(int,  struct <anonymous> *, void *)’} to ‘void (*)(int)’ [-Wcast-function-type]
         func = (sighandler_t)sigsegv;
                ^
signal.c: In function ‘Init_signal’:
signal.c:1481:29: warning: cast between incompatible function types from ‘void (*)(int,  siginfo_t *, void *)’ {aka ‘void (*)(int,  struct <anonymous> *, void *)’} to ‘void (*)(int)’ [-Wcast-function-type]
  install_sighandler(SIGBUS, (sighandler_t)sigbus);
                             ^
signal.c:1363:75: note: in definition of macro ‘install_sighandler’
 #  define install_sighandler(signum, handler) (install_sighandler(signum, handler) ? rb_bug(#signum) : (void)0)
                                                                           ^~~~~~~
signal.c:1484:29: warning: cast between incompatible function types from ‘void (*)(int,  siginfo_t *, void *)’ {aka ‘void (*)(int,  struct <anonymous> *, void *)’} to ‘void (*)(int)’ [-Wcast-function-type]
  install_sighandler(SIGILL, (sighandler_t)sigill);
                             ^
signal.c:1363:75: note: in definition of macro ‘install_sighandler’
 #  define install_sighandler(signum, handler) (install_sighandler(signum, handler) ? rb_bug(#signum) : (void)0)
                                                                           ^~~~~~~
signal.c:1490:30: warning: cast between incompatible function types from ‘void (*)(int,  siginfo_t *, void *)’ {aka ‘void (*)(int,  struct <anonymous> *, void *)’} to ‘void (*)(int)’ [-Wcast-function-type]
  install_sighandler(SIGSEGV, (sighandler_t)sigsegv);
                              ^
signal.c:1363:75: note: in definition of macro ‘install_sighandler’
 #  define install_sighandler(signum, handler) (install_sighandler(signum, handler) ? rb_bug(#signum) : (void)0)
                                                                           ^~~~~~~
compiling st.c
In file included from sprintf.c:14:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
sprintf.c: In function ‘rb_str_format’:
sprintf.c:661:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
      p--;
      ~^~
sprintf.c:662:4: note: here
    case '%':
    ^~~~
In file included from sprintf.c:1275:
vsnprintf.c: In function ‘BSD_vfprintf’:
vsnprintf.c:886:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (prec != 0)
       ^
vsnprintf.c:888:3: note: here
   case 'g':
   ^~~~
In file included from st.c:9:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling strftime.c
compiling string.c
st.c: In function ‘st_hash’:
st.c:1561:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
  t |= data_at(n) << CHAR_BIT*(n)
  ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
st.c:1463:25: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                         ^~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1560:27: note: here
 # define UNALIGNED_ADD(n) case (n) + 1: \
                           ^~~~
st.c:1463:43: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                           ^~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1561:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
  t |= data_at(n) << CHAR_BIT*(n)
  ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
st.c:1463:43: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                           ^~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1560:27: note: here
 # define UNALIGNED_ADD(n) case (n) + 1: \
                           ^~~~
st.c:1463:61: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                                             ^~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1561:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
  t |= data_at(n) << CHAR_BIT*(n)
  ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
st.c:1463:61: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                                             ^~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1560:27: note: here
 # define UNALIGNED_ADD(n) case (n) + 1: \
                           ^~~~
st.c:1463:79: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                                                               ^~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1561:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
  t |= data_at(n) << CHAR_BIT*(n)
  ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
st.c:1463:79: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                                                               ^~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1560:27: note: here
 # define UNALIGNED_ADD(n) case (n) + 1: \
                           ^~~~
st.c:1461:25: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_4 UNALIGNED_ADD(2); UNALIGNED_ADD(1); UNALIGNED_ADD(0)
                         ^~~~~~~~~~~~~
st.c:1463:97: note: in expansion of macro ‘UNALIGNED_ADD_4’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                                                                                 ^~~~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1561:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
  t |= data_at(n) << CHAR_BIT*(n)
  ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
st.c:1461:25: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_4 UNALIGNED_ADD(2); UNALIGNED_ADD(1); UNALIGNED_ADD(0)
                         ^~~~~~~~~~~~~
st.c:1463:97: note: in expansion of macro ‘UNALIGNED_ADD_4’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                                                                                 ^~~~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1560:27: note: here
 # define UNALIGNED_ADD(n) case (n) + 1: \
                           ^~~~
st.c:1461:43: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_4 UNALIGNED_ADD(2); UNALIGNED_ADD(1); UNALIGNED_ADD(0)
                                           ^~~~~~~~~~~~~
st.c:1463:97: note: in expansion of macro ‘UNALIGNED_ADD_4’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                                                                                 ^~~~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1561:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
  t |= data_at(n) << CHAR_BIT*(n)
  ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
st.c:1461:43: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_4 UNALIGNED_ADD(2); UNALIGNED_ADD(1); UNALIGNED_ADD(0)
                                           ^~~~~~~~~~~~~
st.c:1463:97: note: in expansion of macro ‘UNALIGNED_ADD_4’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                                                                                 ^~~~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
st.c:1560:27: note: here
 # define UNALIGNED_ADD(n) case (n) + 1: \
                           ^~~~
st.c:1461:61: note: in expansion of macro ‘UNALIGNED_ADD’
 #define UNALIGNED_ADD_4 UNALIGNED_ADD(2); UNALIGNED_ADD(1); UNALIGNED_ADD(0)
                                                             ^~~~~~~~~~~~~
st.c:1463:97: note: in expansion of macro ‘UNALIGNED_ADD_4’
 #define UNALIGNED_ADD_8 UNALIGNED_ADD(6); UNALIGNED_ADD(5); UNALIGNED_ADD(4); UNALIGNED_ADD(3); UNALIGNED_ADD_4
                                                                                                 ^~~~~~~~~~~~~~~
st.c:1469:27: note: in expansion of macro ‘UNALIGNED_ADD_8’
 #define UNALIGNED_ADD_ALL UNALIGNED_ADD_8
                           ^~~~~~~~~~~~~~~
st.c:1563:2: note: in expansion of macro ‘UNALIGNED_ADD_ALL’
  UNALIGNED_ADD_ALL;
  ^~~~~~~~~~~~~~~~~
compiling struct.c
strftime.c: In function ‘rb_strftime_with_timespec’:
strftime.c:780:12: warning: this statement may fall through [-Wimplicit-fallthrough=]
    padding = '0';
    ~~~~~~~~^~~~~
strftime.c:781:3: note: here
   case '1':  case '2': case '3': case '4':
   ^~~~
In file included from string.c:14:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from struct.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling symbol.c
compiling time.c
In file included from time.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from symbol.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling transcode.c
time.c: In function ‘utc_offset_arg’:
time.c:2092:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
      n += (s[7] * 10 + s[8] - '0' * 11);
      ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
time.c:2093:4: note: here
    case 6:
    ^~~~
In file included from transcode.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling util.c
In file included from util.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
util.c: In function ‘ruby_strtod’:
util.c:2006:18: warning: this statement may fall through [-Wimplicit-fallthrough=]
             sign = 1;
             ~~~~~^~~
util.c:2008:11: note: here
           case '+':
           ^~~~
util.c:2171:19: warning: this statement may fall through [-Wimplicit-fallthrough=]
             esign = 1;
             ~~~~~~^~~
util.c:2172:11: note: here
           case '+':
           ^~~~
util.c: In function ‘ruby_dtoa’:
util.c:3346:19: warning: this statement may fall through [-Wimplicit-fallthrough=]
         leftright = 0;
         ~~~~~~~~~~^~~
util.c:3348:7: note: here
       case 4:
       ^~~~
util.c:3354:19: warning: this statement may fall through [-Wimplicit-fallthrough=]
         leftright = 0;
         ~~~~~~~~~~^~~
util.c:3356:7: note: here
       case 5:
       ^~~~
compiling variable.c
compiling version.c
In file included from variable.c:14:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling compile.c
compiling debug.c
In file included from compile.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from method.h:14,
                 from vm_core.h:62,
                 from eval_intern.h:5,
                 from debug.c:16:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compile.c: In function ‘iseq_compile_each’:
compile.c:4562:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
      boff = 1;
      ~~~~~^~~
compile.c:4563:4: note: here
    default:
    ^~~~~~~
compile.c:5020:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
      flag |= VM_CALL_VCALL;
compile.c:5022:4: note: here
    case NODE_FCALL:
    ^~~~
compile.c:4020:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (node->nd_var) {
     ^
compile.c:4046:7: note: here
       case NODE_ITER:{
       ^~~~
compile.c:4891:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (node->nd_mid == idAREF && !private_recv_p(node) && node->nd_args &&
     ^
compile.c:4907:7: note: here
       case NODE_QCALL:
       ^~~~
compile.c: In function ‘defined_expr0’:
compile.c:3331:23: warning: this statement may fall through [-Wimplicit-fallthrough=]
       case NODE_ARRAY:{
                       ^
compile.c:3343:7: note: here
       case NODE_STR:
       ^~~~
compile.c: In function ‘iseq_peephole_optimize’:
compile.c:2253:13: warning: this statement may fall through [-Wimplicit-fallthrough=]
       piobj = iobj;
       ~~~~~~^~~~~~
compile.c:2254:5: note: here
     default:
     ^~~~~~~
compiling iseq.c
In file included from iseq.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling vm.c
compiling vm_dump.c
In file included from ./include/ruby.h:33,
                 from internal.h:15,
                 from iseq.c:12:
iseq.c: In function ‘rb_insn_operand_intern’:
./include/ruby/ruby.h:401:23: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define RB_ID2SYM(x) (rb_id2sym(x))
                      ~^~~~~~~~~~~~~
./include/ruby/ruby.h:406:19: note: in expansion of macro ‘RB_ID2SYM’
 #define ID2SYM(x) RB_ID2SYM(x)
                   ^~~~~~~~~
iseq.c:1279:7: note: in expansion of macro ‘ID2SYM’
  op = ID2SYM(op);
       ^~~~~~
iseq.c:1281:7: note: here
       case TS_VALUE:  /* VALUE */
       ^~~~
compiling vm_backtrace.c
In file included from vm.c:15:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from vm_dump.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from vm_backtrace.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from vm.c:206:
vm_eval.c: In function ‘rb_eval_string_protect’:
vm_eval.c:1506:23: warning: cast between incompatible function types from ‘VALUE (*)(const char *)’ {aka ‘long unsigned int (*)(const char *)’} to ‘VALUE (*)(VALUE)’ {aka ‘long unsigned int (*)(long unsigned int)’} [-Wcast-function-type]
     return rb_protect((VALUE (*)(VALUE))rb_eval_string, (VALUE)str, state);
                       ^
In file included from vm.c:201:
vm_insnhelper.c: In function ‘check_method_entry’:
vm_insnhelper.c:389:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (can_be_svar) {
     ^
vm_insnhelper.c:392:7: note: here
       default:
       ^~~~~~~
In file included from vm_exec.c:120,
                 from vm.c:203:
insns.def: In function ‘vm_exec_core’:
insns.def:1262:21: warning: this statement may fall through [-Wimplicit-fallthrough=]
       case T_FLOAT: {
                     ^
insns.def:1268:7: note: here
       case T_TRUE:
       ^~~~
In file included from vm.c:201:
vm_insnhelper.c: In function ‘vm_defined’:
vm_insnhelper.c:2592:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (!rb_obj_is_kind_of(GET_SELF(), rb_class_real(klass))) {
      ^
vm_insnhelper.c:2595:8: note: here
        case METHOD_VISI_PUBLIC:
        ^~~~
In file included from vm.c:201:
vm_insnhelper.c: In function ‘check_cref’:
vm_insnhelper.c:440:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (can_be_svar) {
     ^
vm_insnhelper.c:443:7: note: here
       default:
       ^~~~~~~
In file included from vm.c:206:
vm_eval.c: In function ‘singleton_class_for_eval’:
vm_eval.c:1671:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (FL_TEST_RAW(self, RSTRING_FSTR)) return Qnil;
     ^
vm_eval.c:1672:7: note: here
       default:
       ^~~~~~~
In file included from vm.c:201:
vm_insnhelper.c: In function ‘cref_replace_with_duplicated_cref_each_frame’:
vm_insnhelper.c:510:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
      if (can_be_svar) {
         ^
vm_insnhelper.c:513:4: note: here
    case imemo_ment:
    ^~~~
compiling vm_trace.c
compiling thread.c
In file included from vm_trace.c:24:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
vm_trace.c: In function ‘exec_hooks_body’:
vm_trace.c:259:6: warning: cast between incompatible function types from ‘rb_event_hook_func_t’ {aka ‘void (*)(unsigned int,  long unsigned int,  long unsigned int,  long unsigned int,  long unsigned int)’} to ‘void (*)(VALUE,  const rb_trace_arg_t *)’ {aka ‘void (*)(long unsigned int,  const struct rb_trace_arg_struct *)’} [-Wcast-function-type]
   (*((rb_event_hook_raw_arg_func_t)hook->func))(hook->data, trace_arg);
      ^
vm_trace.c: In function ‘rb_tracepoint_enable’:
vm_trace.c:1017:49: warning: cast between incompatible function types from ‘void (*)(VALUE,  rb_trace_arg_t *)’ {aka ‘void (*)(long unsigned int,  struct rb_trace_arg_struct *)’} to ‘void (*)(rb_event_flag_t,  VALUE,  VALUE,  ID,  VALUE)’ {aka ‘void (*)(unsigned int,  long unsigned int,  long unsigned int,  long unsigned int,  long unsigned int)’} [-Wcast-function-type]
  rb_thread_add_event_hook2(tp->target_th->self, (rb_event_hook_func_t)tp_call_trace, tp->events, tpval,
                                                 ^
vm_trace.c:1021:21: warning: cast between incompatible function types from ‘void (*)(VALUE,  rb_trace_arg_t *)’ {aka ‘void (*)(long unsigned int,  struct rb_trace_arg_struct *)’} to ‘void (*)(rb_event_flag_t,  VALUE,  VALUE,  ID,  VALUE)’ {aka ‘void (*)(unsigned int,  long unsigned int,  long unsigned int,  long unsigned int,  long unsigned int)’} [-Wcast-function-type]
  rb_add_event_hook2((rb_event_hook_func_t)tp_call_trace, tp->events, tpval,
                     ^
vm_trace.c: In function ‘rb_tracepoint_disable’:
vm_trace.c:1036:61: warning: cast between incompatible function types from ‘void (*)(VALUE,  rb_trace_arg_t *)’ {aka ‘void (*)(long unsigned int,  struct rb_trace_arg_struct *)’} to ‘void (*)(rb_event_flag_t,  VALUE,  VALUE,  ID,  VALUE)’ {aka ‘void (*)(unsigned int,  long unsigned int,  long unsigned int,  long unsigned int,  long unsigned int)’} [-Wcast-function-type]
  rb_thread_remove_event_hook_with_data(tp->target_th->self, (rb_event_hook_func_t)tp_call_trace, tpval);
                                                             ^
vm_trace.c:1039:33: warning: cast between incompatible function types from ‘void (*)(VALUE,  rb_trace_arg_t *)’ {aka ‘void (*)(long unsigned int,  struct rb_trace_arg_struct *)’} to ‘void (*)(rb_event_flag_t,  VALUE,  VALUE,  ID,  VALUE)’ {aka ‘void (*)(unsigned int,  long unsigned int,  long unsigned int,  long unsigned int,  long unsigned int)’} [-Wcast-function-type]
  rb_remove_event_hook_with_data((rb_event_hook_func_t)tp_call_trace, tpval);
                                 ^
In file included from method.h:14,
                 from vm_core.h:62,
                 from eval_intern.h:5,
                 from thread.c:60:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling cont.c
compiling ./missing/setproctitle.c
In file included from cont.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling ./missing/strlcat.c
compiling ./missing/strlcpy.c
compiling addr2line.c
compiling dmyenc.c
compiling localeinit.c
compiling dln.c
compiling prelude.c
compiling enc/ascii.c
addr2line.c: In function ‘kvprintf’:
addr2line.c:960:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (!dot) {
       ^
addr2line.c:964:3: note: here
   case '1': case '2': case '3': case '4':
   ^~~~
addr2line.c:1100:10: warning: this statement may fall through [-Wimplicit-fallthrough=]
    upper = 1;
    ~~~~~~^~~
addr2line.c:1101:3: note: here
   case 'x':
   ^~~~
In file included from localeinit.c:12:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from prelude.c:7:
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling enc/us_ascii.c
compiling enc/unicode.c
compiling enc/utf_8.c
compiling enc/trans/newline.c
In file included from ./include/ruby/ruby.h:36,
                 from eval_intern.h:4,
                 from thread.c:60:
thread.c: In function ‘rb_thread_fd_select’:
./include/ruby/defines.h:113:15: warning: ‘orig_except.fdset’ may be used uninitialized in this function [-Wmaybe-uninitialized]
 #define xfree ruby_xfree
               ^~~~~~~~~~
In file included from method.h:14,
                 from vm_core.h:62,
                 from eval_intern.h:5,
                 from thread.c:60:
thread.c:3583:34: note: ‘orig_except.fdset’ was declared here
     rb_fdset_t UNINITIALIZED_VAR(orig_except);
                                  ^~~~~~~~~~~
internal.h:40:30: note: in definition of macro ‘UNINITIALIZED_VAR’
 #define UNINITIALIZED_VAR(x) x __attribute__((unused))
                              ^
In file included from ./include/ruby/ruby.h:36,
                 from eval_intern.h:4,
                 from thread.c:60:
./include/ruby/defines.h:113:15: warning: ‘orig_write.fdset’ may be used uninitialized in this function [-Wmaybe-uninitialized]
 #define xfree ruby_xfree
               ^~~~~~~~~~
In file included from method.h:14,
                 from vm_core.h:62,
                 from eval_intern.h:5,
                 from thread.c:60:
thread.c:3582:34: note: ‘orig_write.fdset’ was declared here
     rb_fdset_t UNINITIALIZED_VAR(orig_write);
                                  ^~~~~~~~~~
internal.h:40:30: note: in definition of macro ‘UNINITIALIZED_VAR’
 #define UNINITIALIZED_VAR(x) x __attribute__((unused))
                              ^
In file included from ./include/ruby/ruby.h:36,
                 from eval_intern.h:4,
                 from thread.c:60:
./include/ruby/defines.h:113:15: warning: ‘orig_read.fdset’ may be used uninitialized in this function [-Wmaybe-uninitialized]
 #define xfree ruby_xfree
               ^~~~~~~~~~
In file included from method.h:14,
                 from vm_core.h:62,
                 from eval_intern.h:5,
                 from thread.c:60:
thread.c:3581:34: note: ‘orig_read.fdset’ was declared here
     rb_fdset_t UNINITIALIZED_VAR(orig_read);
                                  ^~~~~~~~~
internal.h:40:30: note: in definition of macro ‘UNINITIALIZED_VAR’
 #define UNINITIALIZED_VAR(x) x __attribute__((unused))
                              ^
linking miniruby
generating encdb.h
rbconfig.rb updated
generating enc.mk
creating verconf.h
encdb.h updated
verconf.h updated
compiling loadpath.c
making srcs under enc
make[1]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[1]: Nothing to be done for 'srcs'.
make[1]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
generating transdb.h
linking static-library libruby-static.a
transdb.h updated
verifying static-library libruby-static.a
generating makefile exts.mk
making enc
making trans
make[1]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[1]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
compiling ./enc/trans/transdb.c
compiling ./enc/encdb.c
compiling ./enc/big5.c
compiling ./enc/cp949.c
compiling ./enc/trans/big5.c
compiling ./enc/trans/chinese.c
compiling ./enc/emacs_mule.c
configuring -test-/array/resize
configuring -test-/bignum
configuring -test-/bug-3571
configuring -test-/bug-5832
configuring -test-/bug_reporter
configuring -test-/class
configuring -test-/debug
In file included from ./enc/encdb.c:12:
./internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
./internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
configuring -test-/dln/empty
configuring -test-/exception
configuring -test-/fatal
configuring -test-/file
compiling ./enc/trans/ebcdic.c
compiling ./enc/euc_jp.c
compiling ./enc/euc_kr.c
compiling ./enc/trans/emoji.c
compiling ./enc/euc_tw.c
compiling ./enc/trans/emoji_iso2022_kddi.c
compiling ./enc/gb2312.c
compiling ./enc/gb18030.c
compiling ./enc/gbk.c
compiling ./enc/iso_8859_1.c
compiling ./enc/iso_8859_2.c
compiling ./enc/iso_8859_3.c
compiling ./enc/trans/emoji_sjis_docomo.c
compiling ./enc/trans/emoji_sjis_kddi.c
compiling ./enc/iso_8859_4.c
compiling ./enc/iso_8859_5.c
compiling ./enc/iso_8859_6.c
compiling ./enc/trans/emoji_sjis_softbank.c
compiling ./enc/iso_8859_7.c
compiling ./enc/iso_8859_8.c
compiling ./enc/iso_8859_9.c
compiling ./enc/iso_8859_10.c
compiling ./enc/iso_8859_11.c
compiling ./enc/iso_8859_13.c
compiling ./enc/trans/escape.c
compiling ./enc/iso_8859_14.c
compiling ./enc/iso_8859_15.c
compiling ./enc/iso_8859_16.c
compiling ./enc/trans/gb18030.c
compiling ./enc/koi8_r.c
compiling ./enc/koi8_u.c
compiling ./enc/trans/gbk.c
compiling ./enc/shift_jis.c
compiling ./enc/utf_16be.c
compiling ./enc/utf_16le.c
compiling ./enc/utf_32be.c
compiling ./enc/trans/iso2022.c
compiling ./enc/utf_32le.c
compiling ./enc/windows_31j.c
compiling ./enc/trans/japanese.c
compiling ./enc/windows_1250.c
compiling ./enc/trans/japanese_euc.c
compiling ./enc/windows_1251.c
compiling ./enc/windows_1252.c
compiling ./enc/trans/japanese_sjis.c
linking encoding encdb.so
compiling ./enc/trans/korean.c
configuring -test-/float
linking encoding big5.so
configuring -test-/funcall
configuring -test-/gvl/call_without_gvl
configuring -test-/hash
linking encoding cp949.so
configuring -test-/iseq_load
configuring -test-/iter
configuring -test-/load/dot.dot
configuring -test-/marshal/compat
compiling ./enc/trans/single_byte.c
configuring -test-/marshal/internal_ivar
configuring -test-/marshal/usr
compiling ./enc/trans/utf8_mac.c
configuring -test-/method
configuring -test-/notimplement
configuring -test-/num2int
configuring -test-/path_to_class
configuring -test-/popen_deadlock
configuring -test-/postponed_job
configuring -test-/printf
configuring -test-/proc
configuring -test-/rational
linking encoding emacs_mule.so
configuring -test-/recursion
configuring -test-/st/foreach
configuring -test-/st/numhash
configuring -test-/st/update
configuring -test-/string
configuring -test-/struct
configuring -test-/symbol
linking encoding euc_jp.so
linking encoding euc_kr.so
compiling ./enc/trans/utf_16_32.c
linking transcoder transdb.so
linking encoding euc_tw.so
linking transcoder big5.so
configuring -test-/thread_fd_close
configuring -test-/time
configuring -test-/tracepoint
configuring -test-/typeddata
configuring -test-/vm
configuring -test-/wait_for_single_fd
configuring bigdecimal
linking transcoder chinese.so
linking encoding gb2312.so
linking encoding gb18030.so
linking transcoder ebcdic.so
linking transcoder emoji.so
linking encoding gbk.so
linking encoding iso_8859_1.so
linking transcoder emoji_iso2022_kddi.so
linking transcoder emoji_sjis_docomo.so
linking encoding iso_8859_2.so
linking transcoder emoji_sjis_kddi.so
linking encoding iso_8859_3.so
linking transcoder emoji_sjis_softbank.so
linking transcoder escape.so
linking encoding iso_8859_4.so
linking encoding iso_8859_5.so
linking transcoder gb18030.so
linking transcoder gbk.so
linking transcoder iso2022.so
linking encoding iso_8859_6.so
linking transcoder japanese.so
linking transcoder japanese_euc.so
linking encoding iso_8859_7.so
linking transcoder japanese_sjis.so
linking encoding iso_8859_8.so
linking transcoder korean.so
linking encoding iso_8859_9.so
linking transcoder single_byte.so
linking transcoder utf8_mac.so
linking encoding iso_8859_10.so
linking transcoder utf_16_32.so
linking encoding iso_8859_11.so
linking encoding iso_8859_14.so
linking encoding iso_8859_13.so
linking encoding iso_8859_15.so
linking encoding iso_8859_16.so
linking encoding koi8_r.so
make[1]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
linking encoding koi8_u.so
linking encoding shift_jis.so
linking encoding utf_16be.so
linking encoding utf_16le.so
linking encoding utf_32be.so
linking encoding utf_32le.so
linking encoding windows_31j.so
linking encoding windows_1250.so
linking encoding windows_1251.so
linking encoding windows_1252.so
make[1]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
making encs
make[1]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[1]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
configuring cgi/escape
configuring continuation
configuring coverage
configuring date
configuring dbm
Failed to configure dbm. It will not be installed.
configuring digest
configuring digest/bubblebabble
configuring digest/md5
configuring digest/rmd160
configuring digest/sha1
configuring digest/sha2
configuring etc
configuring fcntl
configuring fiber
configuring fiddle
configuring gdbm
Failed to configure gdbm. It will not be installed.
configuring io/console
configuring io/nonblock
configuring io/wait
configuring json
configuring json/generator
configuring json/parser
configuring mathn/complex
configuring mathn/rational
configuring nkf
configuring objspace
configuring openssl
configuring pathname
configuring psych
configuring pty
configuring racc/cparse
configuring rbconfig/sizeof
configuring readline
configuring ripper
configuring sdbm
configuring socket
configuring stringio
configuring strscan
configuring syslog
configuring thread
configuring tk
............
check struct members..
check libraries....
Use ActiveTcl libraries (if available).
Search tclConfig.sh and tkConfig.sh..............................
Fail to find [tclConfig.sh, tkConfig.sh]
Use X11 libraries (or use TK_XINCLUDES/TK_XLIBSW information on tkConfig.sh).
Warning:: cannot find X11 library. tcltklib will not be compiled (tcltklib is disabled on your Ruby. That is, Ruby/Tk will not work). Please check configure options. If your Tcl/Tk don't require X11, please try --without-X11.
Can't find X11 libraries.
So, can't make tcltklib.so which is required by Ruby/Tk.
Failed to configure tk. It will not be installed.
Failed to configure tk/tkutil. It will not be installed.
configuring zlib
make[1]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling resize.c
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling big2str.c
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling bug.c
compiling bug.c
compiling bug_reporter.c
compiling bigzero.c
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling class2name.c
compiling init.c
compiling init.c
compiling inspector.c
compiling empty.c
compiling div.c
compiling init.c
compiling intpack.c
compiling profile_frames.c
compiling mul.c
compiling str2big.c
linking shared-object -test-/dln/empty.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/dln/empty'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling enc_raise.c
compiling dataerror.c
In file included from mul.c:1:
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling ensured.c
linking shared-object -test-/bug-3571/bug.so
In file included from big2str.c:1:
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from bigzero.c:1:
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from div.c:1:
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling init.c
linking shared-object -test-/class.so
linking shared-object -test-/bug-5832/bug.so
linking shared-object -test-/array/resize.so
linking shared-object -test-/bug_reporter/bug_reporter.so
In file included from str2big.c:1:
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from intpack.c:1:
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
linking shared-object -test-/debug.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/bug-3571'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling rb_fatal.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/class'
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/array/resize'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/bug_reporter'
compiling fs.c
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling init.c
compiling init.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/bug-5832'
compiling passing_block.c
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling nextafter.c
compiling call_without_gvl.c
compiling stat.c
linking shared-object -test-/bignum.so
linking shared-object -test-/exception.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/debug'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling delete.c
compiling init.c
linking shared-object -test-/fatal/rb_fatal.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/exception'
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/bignum'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling iseq_load.c
compiling break.c
compiling init.c
linking shared-object -test-/funcall/funcall.so
compiling yield.c
linking shared-object -test-/float.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/fatal'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling dot.dot.c
linking shared-object -test-/gvl/call_without_gvl.so
linking shared-object -test-/file.so
linking shared-object -test-/hash.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/funcall'
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/float'
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/hash'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
linking shared-object -test-/load/dot.dot/dot.dot.so
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling usrcompat.c
compiling usrmarshal.c
compiling internal_ivar.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/gvl/call_without_gvl'
linking shared-object -test-/iseq_load/iseq_load.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/file'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling arity.c
compiling init.c
compiling bug.c
linking shared-object -test-/iter.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/load/dot.dot'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling num2int.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/iseq_load'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling path_to_class.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/iter'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling infinite_loop_dlsym.c
linking shared-object -test-/marshal/usr.so
linking shared-object -test-/marshal/compat.so
linking shared-object -test-/marshal/internal_ivar.so
linking shared-object -test-/method.so
linking shared-object -test-/notimplement.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/marshal/internal_ivar'
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/marshal/compat'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/method'
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/marshal/usr'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling postponed_job.c
compiling init.c
compiling printf.c
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling receiver.c
linking shared-object -test-/num2int/num2int.so
linking shared-object -test-/path_to_class/path_to_class.so
compiling rat.c
compiling super.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/notimplement'
linking shared-object -test-/popen_deadlock/infinite_loop_dlsym.so
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling recursion.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/num2int'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/path_to_class'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling numhash.c
compiling foreach.c
In file included from rat.c:1:
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/popen_deadlock'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling update.c
linking shared-object -test-/postponed_job.so
linking shared-object -test-/rational.so
linking shared-object -test-/proc.so
linking shared-object -test-/printf.so
linking shared-object -test-/recursion.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/postponed_job'
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/rational'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling coderange.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/proc'
compiling duplicate.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/printf'
compiling init.c
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
linking shared-object -test-/st/numhash.so
linking shared-object -test-/st/update.so
compiling cstr.c
compiling init.c
compiling type.c
compiling thread_fd_close.c
compiling ellipsize.c
compiling member.c
compiling enc_associate.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/recursion'
linking shared-object -test-/st/foreach.so
compiling enc_str_buf_cat.c
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling init.c
compiling new.c
compiling fstring.c
compiling init.c
compiling modify.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/st/numhash'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/st/update'
compiling gc_hook.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/st/foreach'
compiling tracepoint.c
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling typeddata.c
compiling at_exit.c
compiling nofree.c
In file included from cstr.c:1:
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
linking shared-object -test-/thread_fd_close.so
linking shared-object -test-/struct.so
compiling set_len.c
compiling normalize.c
compiling qsort.c
linking shared-object -test-/symbol.so
linking shared-object -test-/vm/at_exit.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/thread_fd_close'
linking shared-object -test-/time.so
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling wait_for_single_fd.c
linking shared-object -test-/typeddata/typeddata.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/struct'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/vm'
compiling bigdecimal.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/symbol'
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/time'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
linking shared-object -test-/tracepoint.so
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling escape.c
In file included from normalize.c:1:
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling continuation.c
compiling coverage.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/typeddata'
installing default bigdecimal libraries
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling date_core.c
compiling date_parse.c
compiling date_strftime.c
linking shared-object -test-/string.so
compiling date_strptime.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/tracepoint'
installing default date_core libraries
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/dbm'
linking shared-object -test-/wait_for_single_fd/wait_for_single_fd.so
In file included from ../../method.h:14,
                 from ../../vm_core.h:62,
                 from coverage.c:12:
../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling digest.c
installing default digest libraries
linking shared-object continuation.so
installing digest libraries
linking shared-object cgi/escape.so
date_core.c: In function ‘datetime_s_jisx0301’:
date_core.c:8114:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01T00:00:00+00:00");
date_core.c:8115:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘datetime_s_httpdate’:
date_core.c:8084:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("Mon, 01 Jan -4712 00:00:00 GMT");
date_core.c:8085:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘datetime_s_rfc2822’:
date_core.c:8054:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("Mon, 1 Jan -4712 00:00:00 +0000");
date_core.c:8055:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘datetime_s_xmlschema’:
date_core.c:8023:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01T00:00:00+00:00");
date_core.c:8024:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘datetime_s_rfc3339’:
date_core.c:7993:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01T00:00:00+00:00");
date_core.c:7994:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘datetime_s_iso8601’:
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/string'
date_core.c:7963:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01T00:00:00+00:00");
date_core.c:7964:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘datetime_s_parse’:
date_core.c:7923:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01T00:00:00+00:00");
date_core.c:7924:7: note: here
       case 1:
       ^~~~
date_core.c:7925:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
  comp = Qtrue;
date_core.c:7926:7: note: here
       case 2:
       ^~~~
date_core.c: In function ‘datetime_s_strptime’:
date_core.c:7880:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01T00:00:00+00:00");
date_core.c:7881:7: note: here
       case 1:
       ^~~~
date_core.c:7882:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  fmt = rb_str_new2("%FT%T%z");
date_core.c:7883:7: note: here
       case 2:
       ^~~~
date_core.c: In function ‘datetime_s_commercial’:
date_core.c:3247:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!c_valid_start_p(dsg)) {\
        ^
date_core.c:7443:2: note: in expansion of macro ‘val2sg’
  val2sg(vsg, sg);
  ^~~~~~
date_core.c:7444:7: note: here
       case 7:
       ^~~~
date_core.c:4696:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!offset_to_sec(vof, &iof)) {\
        ^
date_core.c:7445:2: note: in expansion of macro ‘val2off’
  val2off(vof, rof);
  ^~~~~~~
date_core.c:7446:7: note: here
       case 6:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7447:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(s, positive_inf);
  ^~~~~~~~~~~~~~~~~
date_core.c:7448:7: note: here
       case 5:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7449:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(min, 5);
  ^~~~~~~~~~~~~~~~~
date_core.c:7450:7: note: here
       case 4:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7451:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(h, 4);
  ^~~~~~~~~~~~~~~~~
date_core.c:7452:7: note: here
       case 3:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7453:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(d, 3);
  ^~~~~~~~~~~~~~~~~
date_core.c:7454:7: note: here
       case 2:
       ^~~~
In file included from ../.././include/ruby.h:33,
                 from date_core.c:5:
../.././include/ruby/ruby.h:689:23: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define RB_NUM2INT(x) rb_num2int_inline(x)
                       ^~~~~~~~~~~~~~~~~~~~
../.././include/ruby/ruby.h:701:21: note: in expansion of macro ‘RB_NUM2INT’
 #define NUM2INT(x)  RB_NUM2INT(x)
                     ^~~~~~~~~~
date_core.c:7455:6: note: in expansion of macro ‘NUM2INT’
  w = NUM2INT(vw);
      ^~~~~~~
date_core.c:7456:7: note: here
       case 1:
       ^~~~
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/-test-/wait_for_single_fd'
date_core.c: In function ‘datetime_s_civil’:
date_core.c:3247:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!c_valid_start_p(dsg)) {\
        ^
date_core.c:7346:2: note: in expansion of macro ‘val2sg’
  val2sg(vsg, sg);
  ^~~~~~
date_core.c:7347:7: note: here
       case 7:
       ^~~~
date_core.c:4696:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!offset_to_sec(vof, &iof)) {\
        ^
date_core.c:7348:2: note: in expansion of macro ‘val2off’
  val2off(vof, rof);
  ^~~~~~~
date_core.c:7349:7: note: here
       case 6:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7350:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(s, positive_inf);
  ^~~~~~~~~~~~~~~~~
date_core.c:7351:7: note: here
       case 5:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7352:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(min, 5);
  ^~~~~~~~~~~~~~~~~
date_core.c:7353:7: note: here
       case 4:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7354:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(h, 4);
  ^~~~~~~~~~~~~~~~~
date_core.c:7355:7: note: here
       case 3:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7356:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(d, 3);
  ^~~~~~~~~~~~~~~~~
date_core.c:7357:7: note: here
       case 2:
       ^~~~
In file included from ../.././include/ruby.h:33,
                 from date_core.c:5:
../.././include/ruby/ruby.h:689:23: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define RB_NUM2INT(x) rb_num2int_inline(x)
                       ^~~~~~~~~~~~~~~~~~~~
../.././include/ruby/ruby.h:701:21: note: in expansion of macro ‘RB_NUM2INT’
 #define NUM2INT(x)  RB_NUM2INT(x)
                     ^~~~~~~~~~
date_core.c:7358:6: note: in expansion of macro ‘NUM2INT’
  m = NUM2INT(vm);
      ^~~~~~~
date_core.c:7359:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘datetime_s_ordinal’:
date_core.c:3247:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!c_valid_start_p(dsg)) {\
        ^
date_core.c:7269:2: note: in expansion of macro ‘val2sg’
  val2sg(vsg, sg);
  ^~~~~~
date_core.c:7270:7: note: here
       case 6:
       ^~~~
date_core.c:4696:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!offset_to_sec(vof, &iof)) {\
        ^
date_core.c:7271:2: note: in expansion of macro ‘val2off’
  val2off(vof, rof);
  ^~~~~~~
date_core.c:7272:7: note: here
       case 5:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7273:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(s, positive_inf);
  ^~~~~~~~~~~~~~~~~
date_core.c:7274:7: note: here
       case 4:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7275:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(min, 4);
  ^~~~~~~~~~~~~~~~~
date_core.c:7276:7: note: here
       case 3:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7277:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(h, 3);
  ^~~~~~~~~~~~~~~~~
date_core.c:7278:7: note: here
       case 2:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7279:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(d, 2);
  ^~~~~~~~~~~~~~~~~
date_core.c:7280:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘datetime_s_jd’:
date_core.c:3247:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!c_valid_start_p(dsg)) {\
        ^
date_core.c:7200:2: note: in expansion of macro ‘val2sg’
  val2sg(vsg, sg);
  ^~~~~~
date_core.c:7201:7: note: here
       case 5:
       ^~~~
date_core.c:4696:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!offset_to_sec(vof, &iof)) {\
        ^
date_core.c:7202:2: note: in expansion of macro ‘val2off’
  val2off(vof, rof);
  ^~~~~~~
date_core.c:7203:7: note: here
       case 4:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7204:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(s, positive_inf);
  ^~~~~~~~~~~~~~~~~
date_core.c:7205:7: note: here
       case 3:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7206:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(min, 3);
  ^~~~~~~~~~~~~~~~~
date_core.c:7207:7: note: here
       case 2:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:7208:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(h, 2);
  ^~~~~~~~~~~~~~~~~
date_core.c:7209:7: note: here
       case 1:
       ^~~~
linking shared-object coverage.so
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
date_core.c: In function ‘date_s_jisx0301’:
date_core.c:4631:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01");
date_core.c:4632:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘date_s_httpdate’:
date_core.c:4590:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("Mon, 01 Jan -4712 00:00:00 GMT");
date_core.c:4591:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘date_s_rfc2822’:
date_core.c:4548:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("Mon, 1 Jan -4712 00:00:00 +0000");
date_core.c:4549:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘date_s_xmlschema’:
date_core.c:4504:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01");
date_core.c:4505:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘date_s_rfc3339’:
date_core.c:4463:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01T00:00:00+00:00");
date_core.c:4464:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘date_s_iso8601’:
date_core.c:4422:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01");
date_core.c:4423:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘date_s_parse’:
date_core.c:4366:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01");
date_core.c:4367:7: note: here
       case 1:
       ^~~~
date_core.c:4368:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
  comp = Qtrue;
date_core.c:4369:7: note: here
       case 2:
       ^~~~
date_core.c: In function ‘date_s_strptime’:
date_core.c:4275:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  str = rb_str_new2("-4712-01-01");
date_core.c:4276:7: note: here
       case 1:
       ^~~~
date_core.c:4277:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
  fmt = rb_str_new2("%F");
date_core.c:4278:7: note: here
       case 2:
       ^~~~
date_core.c: In function ‘date_s_commercial’:
date_core.c:3247:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!c_valid_start_p(dsg)) {\
        ^
date_core.c:3480:2: note: in expansion of macro ‘val2sg’
  val2sg(vsg, sg);
  ^~~~~~
date_core.c:3481:7: note: here
       case 3:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:3482:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(d, positive_inf);
  ^~~~~~~~~~~~~~~~~
date_core.c:3483:7: note: here
       case 2:
       ^~~~
In file included from ../.././include/ruby.h:33,
                 from date_core.c:5:
../.././include/ruby/ruby.h:689:23: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define RB_NUM2INT(x) rb_num2int_inline(x)
                       ^~~~~~~~~~~~~~~~~~~~
../.././include/ruby/ruby.h:701:21: note: in expansion of macro ‘RB_NUM2INT’
 #define NUM2INT(x)  RB_NUM2INT(x)
                     ^~~~~~~~~~
date_core.c:3484:6: note: in expansion of macro ‘NUM2INT’
  w = NUM2INT(vw);
      ^~~~~~~
date_core.c:3485:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘date_s_civil’:
date_core.c:3247:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!c_valid_start_p(dsg)) {\
        ^
date_core.c:3403:2: note: in expansion of macro ‘val2sg’
  val2sg(vsg, sg);
  ^~~~~~
date_core.c:3404:7: note: here
       case 3:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:3405:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(d, positive_inf);
  ^~~~~~~~~~~~~~~~~
date_core.c:3406:7: note: here
       case 2:
       ^~~~
In file included from ../.././include/ruby.h:33,
                 from date_core.c:5:
../.././include/ruby/ruby.h:689:23: warning: this statement may fall through [-Wimplicit-fallthrough=]
 #define RB_NUM2INT(x) rb_num2int_inline(x)
                       ^~~~~~~~~~~~~~~~~~~~
../.././include/ruby/ruby.h:701:21: note: in expansion of macro ‘RB_NUM2INT’
 #define NUM2INT(x)  RB_NUM2INT(x)
                     ^~~~~~~~~~
date_core.c:3407:6: note: in expansion of macro ‘NUM2INT’
  m = NUM2INT(vm);
      ^~~~~~~
date_core.c:3408:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘date_s_ordinal’:
date_core.c:3247:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!c_valid_start_p(dsg)) {\
        ^
date_core.c:3334:2: note: in expansion of macro ‘val2sg’
  val2sg(vsg, sg);
  ^~~~~~
date_core.c:3335:7: note: here
       case 2:
       ^~~~
date_core.c:3223:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (f_nonzero_p(fr)) {\
        ^
date_core.c:3336:2: note: in expansion of macro ‘num2int_with_frac’
  num2int_with_frac(d, positive_inf);
  ^~~~~~~~~~~~~~~~~
date_core.c:3337:7: note: here
       case 1:
       ^~~~
date_core.c: In function ‘date_s_jd’:
date_core.c:3247:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
     if (!c_valid_start_p(dsg)) {\
        ^
date_core.c:3282:2: note: in expansion of macro ‘val2sg’
  val2sg(vsg, sg);
  ^~~~~~
date_core.c:3283:7: note: here
       case 1:
       ^~~~
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling bubblebabble.c
date_strftime.c: In function ‘date_strftime_with_tmx’:
date_strftime.c:573:14: warning: this statement may fall through [-Wimplicit-fallthrough=]
      padding = '0';
      ~~~~~~~~^~~~~
date_strftime.c:574:4: note: here
    case '1':  case '2': case '3': case '4':
    ^~~~
compiling md5init.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/continuation'
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/cgi/escape'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling rmd160init.c
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/coverage'
compiling sha1init.c
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling sha2init.c
md5init.c:20:5: warning: cast between incompatible function types from ‘int (*)(MD5_CTX *, const void *, size_t)’ {aka ‘int (*)(struct MD5state_st *, const void *, long unsigned int)’} to ‘void (*)(void *, unsigned char *, size_t)’ {aka ‘void (*)(void *, unsigned char *, long unsigned int)’} [-Wcast-function-type]
     (rb_digest_hash_update_func_t)MD5_Update,
     ^
linking shared-object digest.so
rmd160init.c:18:5: warning: cast between incompatible function types from ‘int (*)(RIPEMD160_CTX *, const void *, size_t)’ {aka ‘int (*)(struct RIPEMD160state_st *, const void *, long unsigned int)’} to ‘void (*)(void *, unsigned char *, size_t)’ {aka ‘void (*)(void *, unsigned char *, long unsigned int)’} [-Wcast-function-type]
     (rb_digest_hash_update_func_t)RMD160_Update,
     ^
installing default sha2 libraries
linking shared-object digest/bubblebabble.so
linking shared-object digest/md5.so
sha1init.c:20:5: warning: cast between incompatible function types from ‘int (*)(SHA_CTX *, const void *, size_t)’ {aka ‘int (*)(struct SHAstate_st *, const void *, long unsigned int)’} to ‘void (*)(void *, unsigned char *, size_t)’ {aka ‘void (*)(void *, unsigned char *, long unsigned int)’} [-Wcast-function-type]
     (rb_digest_hash_update_func_t)SHA1_Update,
     ^
sha2init.c:23:5: warning: cast between incompatible function types from ‘int (*)(SHA256_CTX *, const void *, size_t)’ {aka ‘int (*)(struct SHA256state_st *, const void *, long unsigned int)’} to ‘void (*)(void *, unsigned char *, size_t)’ {aka ‘void (*)(void *, unsigned char *, long unsigned int)’} [-Wcast-function-type]
     (rb_digest_hash_update_func_t)SHA##bitlen##_Update, \
     ^
sha2init.c:14:30: note: in expansion of macro ‘DEFINE_ALGO_METADATA’
 #define FOREACH_BITLEN(func) func(256) func(384) func(512)
                              ^~~~
sha2init.c:27:1: note: in expansion of macro ‘FOREACH_BITLEN’
 FOREACH_BITLEN(DEFINE_ALGO_METADATA)
 ^~~~~~~~~~~~~~
sha2init.c:23:5: warning: cast between incompatible function types from ‘int (*)(SHA512_CTX *, const void *, size_t)’ {aka ‘int (*)(struct SHA512state_st *, const void *, long unsigned int)’} to ‘void (*)(void *, unsigned char *, size_t)’ {aka ‘void (*)(void *, unsigned char *, long unsigned int)’} [-Wcast-function-type]
     (rb_digest_hash_update_func_t)SHA##bitlen##_Update, \
     ^
sha2init.c:14:40: note: in expansion of macro ‘DEFINE_ALGO_METADATA’
 #define FOREACH_BITLEN(func) func(256) func(384) func(512)
                                        ^~~~
sha2init.c:27:1: note: in expansion of macro ‘FOREACH_BITLEN’
 FOREACH_BITLEN(DEFINE_ALGO_METADATA)
 ^~~~~~~~~~~~~~
sha2init.c:23:5: warning: cast between incompatible function types from ‘int (*)(SHA512_CTX *, const void *, size_t)’ {aka ‘int (*)(struct SHA512state_st *, const void *, long unsigned int)’} to ‘void (*)(void *, unsigned char *, size_t)’ {aka ‘void (*)(void *, unsigned char *, long unsigned int)’} [-Wcast-function-type]
     (rb_digest_hash_update_func_t)SHA##bitlen##_Update, \
     ^
sha2init.c:14:50: note: in expansion of macro ‘DEFINE_ALGO_METADATA’
 #define FOREACH_BITLEN(func) func(256) func(384) func(512)
                                                  ^~~~
sha2init.c:27:1: note: in expansion of macro ‘FOREACH_BITLEN’
 FOREACH_BITLEN(DEFINE_ALGO_METADATA)
 ^~~~~~~~~~~~~~
linking shared-object digest/rmd160.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/digest'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
generating constant definitions
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/digest/bubblebabble'
linking shared-object digest/sha1.so
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling fcntl.c
linking shared-object digest/sha2.so
compiling etc.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/digest/md5'
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/digest/rmd160'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling fiber.c
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling closure.c
compiling conversions.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/digest/sha1'
compiling fiddle.c
compiling function.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/digest/sha2'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/gdbm'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling console.c
linking shared-object fiber.so
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling nonblock.c
compiling handle.c
linking shared-object fcntl.so
compiling pointer.c
installing default console libraries
installing default fiddle libraries
In file included from closure.c:3:
../.././internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../.././internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/fiber'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/fcntl'
compiling wait.c
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
linking shared-object etc.so
installing default libraries
linking shared-object io/nonblock.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/etc'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling generator.c
linking shared-object io/console.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/io/nonblock'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/json'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling parser.c
linking shared-object io/wait.so
compiling complex.c
linking shared-object fiddle.so
generator.c: In function ‘convert_UTF8_to_JSON_ASCII’:
generator.c:148:41: warning: this statement may fall through [-Wimplicit-fallthrough=]
             case 5: ch += *source++; ch <<= 6; /* remember, illegal UTF-8 */
                                      ~~~^~~~~
generator.c:149:13: note: here
             case 4: ch += *source++; ch <<= 6; /* remember, illegal UTF-8 */
             ^~~~
generator.c:149:41: warning: this statement may fall through [-Wimplicit-fallthrough=]
             case 4: ch += *source++; ch <<= 6; /* remember, illegal UTF-8 */
                                      ~~~^~~~~
generator.c:150:13: note: here
             case 3: ch += *source++; ch <<= 6;
             ^~~~
generator.c:150:41: warning: this statement may fall through [-Wimplicit-fallthrough=]
             case 3: ch += *source++; ch <<= 6;
                                      ~~~^~~~~
generator.c:151:13: note: here
             case 2: ch += *source++; ch <<= 6;
             ^~~~
generator.c:151:41: warning: this statement may fall through [-Wimplicit-fallthrough=]
             case 2: ch += *source++; ch <<= 6;
                                      ~~~^~~~~
generator.c:152:13: note: here
             case 1: ch += *source++; ch <<= 6;
             ^~~~
generator.c:152:41: warning: this statement may fall through [-Wimplicit-fallthrough=]
             case 1: ch += *source++; ch <<= 6;
                                      ~~~^~~~~
generator.c:153:13: note: here
             case 0: ch += *source++;
             ^~~~
generator.c: In function ‘isLegalUTF8’:
generator.c:86:46: warning: this statement may fall through [-Wimplicit-fallthrough=]
         case 4: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return 0;
                     ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
generator.c:87:9: note: here
         case 3: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return 0;
         ^~~~
generator.c:87:46: warning: this statement may fall through [-Wimplicit-fallthrough=]
         case 3: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return 0;
                     ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
generator.c:88:9: note: here
         case 2: if ((a = (*--srcptr)) > 0xBF) return 0;
         ^~~~
generator.c:90:21: warning: this statement may fall through [-Wimplicit-fallthrough=]
                     switch (*source) {
                     ^~~~~~
generator.c:99:9: note: here
         case 1: if (*source >= 0x80 && *source < 0xC2) return 0;
         ^~~~
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/io/console'
linking shared-object mathn/complex.so
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling rational.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/io/wait'
parser.c: In function ‘cParser_parse_quirks_mode’:
parser.c:1968:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1970:1: note: here
 case 1:
 ^~~~
parser.rl:803:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
             begin_value >parse_value
     ^
parser.rl:805:1: note: here
 }%%
 ^~~
parser.c:2015:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:2017:1: note: here
 case 2:
 ^~~~
parser.c:2024:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:2026:1: note: here
 case 3:
 ^~~~
parser.c:2031:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:2033:1: note: here
 case 4:
 ^~~~
parser.c:2040:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:2042:1: note: here
 case 5:
 ^~~~
parser.c:2047:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:2049:1: note: here
 case 6:
 ^~~~
parser.c:2056:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:2058:1: note: here
 case 7:
 ^~~~
parser.c:2063:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
parser.c:2065:1: note: here
 case 8:
 ^~~~
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
parser.c:2072:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:2074:1: note: here
 case 9:
 ^~~~
parser.c: In function ‘JSON_parse_value’:
parser.rl:227:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
             *result = CNaN;
     ^
parser.rl:229:1: note: here
             rb_enc_raise(EXC_ENCODING eParserError, "%u: unexpected token at '%s'", __LINE__, p - 2);
 ^
parser.c:630:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:632:1: note: here
 case 2:
 ^~~~
parser.c:637:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:639:1: note: here
 case 3:
 ^~~~
parser.c:644:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:646:1: note: here
 case 4:
 ^~~~
parser.c:651:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:653:1: note: here
 case 5:
 ^~~~
parser.c:658:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:660:1: note: here
 case 6:
 ^~~~
parser.c:665:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:667:1: note: here
 case 7:
 ^~~~
parser.c:672:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:674:1: note: here
 case 8:
 ^~~~
parser.c:679:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:681:1: note: here
 case 9:
 ^~~~
parser.c:686:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:688:1: note: here
 case 10:
 ^~~~
parser.c:693:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:695:1: note: here
 case 11:
 ^~~~
parser.c:700:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:702:1: note: here
 case 12:
 ^~~~
parser.c:707:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:709:1: note: here
 case 13:
 ^~~~
parser.c:714:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:716:1: note: here
 case 14:
 ^~~~
parser.c:721:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:723:1: note: here
 case 15:
 ^~~~
parser.c:728:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:730:1: note: here
 case 16:
 ^~~~
parser.c:735:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:737:1: note: here
 case 17:
 ^~~~
parser.c:742:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:744:1: note: here
 case 18:
 ^~~~
parser.c:749:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:751:1: note: here
 case 19:
 ^~~~
parser.c:756:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:758:1: note: here
 case 20:
 ^~~~
parser.c: In function ‘JSON_parse_string’:
parser.c:1447:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1449:1: note: here
 case 2:
 ^~~~
parser.c:1479:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1481:1: note: here
 case 3:
 ^~~~
parser.c:1488:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1490:1: note: here
 case 4:
 ^~~~
parser.c:1501:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1503:1: note: here
 case 5:
 ^~~~
parser.c:1514:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1516:1: note: here
 case 6:
 ^~~~
parser.c:1527:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1529:1: note: here
 case 7:
 ^~~~
parser.c: In function ‘JSON_parse_array’:
parser.c:1106:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1108:1: note: here
 case 2:
 ^~~~
parser.rl:394:5: warning: this statement may fall through [-Wimplicit-fallthrough=]

     ^
parser.rl:396:1: note: here

 ^
parser.c:1163:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1165:1: note: here
 case 4:
 ^~~~
parser.c:1187:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1189:1: note: here
 case 5:
 ^~~~
parser.c:1196:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1198:1: note: here
 case 6:
 ^~~~
parser.c:1203:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1205:1: note: here
 case 7:
 ^~~~
parser.c:1212:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1214:1: note: here
 case 8:
 ^~~~
parser.c:1219:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1221:1: note: here
 case 9:
 ^~~~
parser.c:1228:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1230:1: note: here
 case 10:
 ^~~~
parser.c:1235:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1237:1: note: here
 case 11:
 ^~~~
parser.c:1244:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1246:1: note: here
 case 12:
 ^~~~
parser.c:1261:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1263:1: note: here
 case 13:
 ^~~~
parser.c:1270:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1272:1: note: here
 case 14:
 ^~~~
parser.c:1277:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1279:1: note: here
 case 15:
 ^~~~
parser.c:1286:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1288:1: note: here
 case 16:
 ^~~~
parser.c: In function ‘JSON_parse_object’:
parser.c:156:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:158:1: note: here
 case 2:
 ^~~~
parser.rl:162:5: warning: this statement may fall through [-Wimplicit-fallthrough=]

     ^
parser.rl:164:1: note: here
     next_pair   = ignore* value_separator pair;
 ^
parser.c:194:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:196:1: note: here
 case 4:
 ^~~~
parser.c:203:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:205:1: note: here
 case 5:
 ^~~~
parser.c:210:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:212:1: note: here
 case 6:
 ^~~~
parser.c:219:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:221:1: note: here
 case 7:
 ^~~~
parser.c:226:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:228:1: note: here
 case 8:
 ^~~~
parser.rl:154:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
         char *np;
     ^
parser.rl:156:1: note: here
         np = JSON_parse_string(json, fpc, pe, &last_name);
 ^
parser.c:282:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:284:1: note: here
 case 10:
 ^~~~
parser.c:295:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:297:1: note: here
 case 11:
 ^~~~
parser.c:304:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:306:1: note: here
 case 12:
 ^~~~
parser.c:311:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:313:1: note: here
 case 13:
 ^~~~
parser.c:320:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:322:1: note: here
 case 14:
 ^~~~
parser.c:327:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:329:1: note: here
 case 15:
 ^~~~
parser.c:336:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:338:1: note: here
 case 16:
 ^~~~
parser.c:343:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:345:1: note: here
 case 17:
 ^~~~
parser.c:352:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:354:1: note: here
 case 18:
 ^~~~
parser.c:369:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:371:1: note: here
 case 19:
 ^~~~
parser.c:378:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:380:1: note: here
 case 20:
 ^~~~
parser.c:385:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:387:1: note: here
 case 21:
 ^~~~
parser.c:394:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:396:1: note: here
 case 22:
 ^~~~
parser.c:401:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:403:1: note: here
 case 23:
 ^~~~
parser.c:410:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:412:1: note: here
 case 24:
 ^~~~
parser.c:417:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:419:1: note: here
 case 25:
 ^~~~
parser.c:426:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:428:1: note: here
 case 26:
 ^~~~
compiling nkf.c
parser.c: In function ‘JSON_parse_float’:
parser.c:939:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:941:1: note: here
 case 2:
 ^~~~
parser.c:948:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:950:1: note: here
 case 3:
 ^~~~
parser.c:958:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:960:1: note: here
 case 4:
 ^~~~
parser.c:965:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:967:1: note: here
 case 8:
 ^~~~
parser.c:989:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:991:1: note: here
 case 5:
 ^~~~
parser.c:1000:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1002:1: note: here
 case 6:
 ^~~~
parser.c:1007:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1009:1: note: here
 case 10:
 ^~~~
parser.c:1021:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1023:1: note: here
 case 7:
 ^~~~
parser.c: In function ‘JSON_parse_integer’:
parser.c:840:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:842:1: note: here
 case 2:
 ^~~~
parser.c:849:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:851:1: note: here
 case 3:
 ^~~~
parser.c:866:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:868:1: note: here
 case 5:
 ^~~~
parser.c: In function ‘cParser_parse_strict’:
parser.c:1794:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1796:1: note: here
 case 1:
 ^~~~
parser.c:1811:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1813:1: note: here
 case 2:
 ^~~~
parser.c:1820:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1822:1: note: here
 case 3:
 ^~~~
parser.c:1827:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1829:1: note: here
 case 4:
 ^~~~
parser.c:1836:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1838:1: note: here
 case 5:
 ^~~~
parser.rl:757:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
         char *np;
     ^
parser.rl:759:1: note: here
         np = JSON_parse_array(json, fpc, pe, &result);
 ^
parser.c:1874:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1876:1: note: here
 case 6:
 ^~~~
parser.c:1883:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1885:1: note: here
 case 7:
 ^~~~
parser.c:1890:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1892:1: note: here
 case 8:
 ^~~~
parser.c:1899:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if ( ++p == pe )
     ^
parser.c:1901:1: note: here
 case 9:
 ^~~~
installing default nkf libraries
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/fiddle'
linking shared-object mathn/rational.so
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling object_tracing.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/mathn/complex'
compiling objspace.c
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling objspace_dump.c
compiling openssl_missing.c
compiling ossl.c
compiling ossl_asn1.c
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/mathn/rational'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling pathname.c
compiling ossl_bio.c
In file included from object_tracing.c:16:
../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling ossl_bn.c
installing default pathname libraries
compiling ossl_cipher.c
In file included from nkf.c:62:
nkf-utf8/nkf.c: In function ‘module_connection’:
nkf-utf8/nkf.c:5710:5: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
     if (nkf_enc_unicode_p(output_encoding))
     ^~
nkf-utf8/nkf.c:5713:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘if’
  if (x0201_f == NKF_UNSPECIFIED) {
  ^~
In file included from objspace.c:15:
../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
nkf-utf8/nkf.c: In function ‘options’:
nkf-utf8/nkf.c:6807:22: warning: this statement may fall through [-Wimplicit-fallthrough=]
      fold_preserve_f = TRUE;
nkf-utf8/nkf.c:6808:2: note: here
  case 'f':   /* folding -f60 or -f */
  ^~~~
In file included from nkf.c:62:
nkf-utf8/nkf.c: In function ‘set_input_encoding’:
nkf-utf8/nkf.c:1238:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  if (x0201_f == NKF_UNSPECIFIED) x0201_f = FALSE; /* -x specified implicitly */
     ^
nkf-utf8/nkf.c:1239:5: note: here
     case CP50220:
     ^~~~
In file included from objspace_dump.c:15:
../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
compiling ossl_config.c
compiling ossl_digest.c
linking shared-object json/ext/parser.so
In file included from openssl_missing.c:21:
openssl_missing.h:78:35: error: macro "EVP_MD_CTX_create" passed 1 arguments, but takes just 0
 EVP_MD_CTX *EVP_MD_CTX_create(void);
                                   ^
In file included from /usr/include/openssl/x509.h:18,
                 from /usr/include/openssl/x509_vfy.h:17,
                 from openssl_missing.c:15:
openssl_missing.h:82:6: error: expected declaration specifiers or ‘...’ before ‘(’ token
 void EVP_MD_CTX_init(EVP_MD_CTX *ctx);
      ^~~~~~~~~~~~~~~
openssl_missing.h:90:6: error: expected declaration specifiers or ‘...’ before ‘(’ token
 void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx);
      ^~~~~~~~~~~~~~~~~~
openssl_missing.c:39:23: error: macro "EVP_MD_CTX_create" passed 1 arguments, but takes just 0
 EVP_MD_CTX_create(void)
                       ^
openssl_missing.c:40:1: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘{’ token
 {
 ^
openssl_missing.c: In function ‘EVP_MD_CTX_cleanup’:
openssl_missing.c:55:27: error: invalid application of ‘sizeof’ to incomplete type ‘EVP_MD_CTX’ {aka ‘struct evp_md_ctx_st’}
     memset(ctx, 0, sizeof(EVP_MD_CTX));
                           ^~~~~~~~~~
In file included from /usr/include/openssl/x509.h:18,
                 from /usr/include/openssl/x509_vfy.h:17,
                 from openssl_missing.c:15:
openssl_missing.c: At top level:
openssl_missing.c:63:1: error: expected declaration specifiers or ‘...’ before ‘(’ token
 EVP_MD_CTX_destroy(EVP_MD_CTX *ctx)
 ^~~~~~~~~~~~~~~~~~
openssl_missing.c:72:1: error: expected declaration specifiers or ‘...’ before ‘(’ token
 EVP_MD_CTX_init(EVP_MD_CTX *ctx)
 ^~~~~~~~~~~~~~~
openssl_missing.c: In function ‘HMAC_CTX_init’:
openssl_missing.c:82:25: error: dereferencing pointer to incomplete type ‘HMAC_CTX’ {aka ‘struct hmac_ctx_st’}
     EVP_MD_CTX_init(&ctx->i_ctx);
                         ^~
openssl_missing.c: In function ‘HMAC_CTX_cleanup’:
openssl_missing.c:95:27: error: invalid application of ‘sizeof’ to incomplete type ‘HMAC_CTX’ {aka ‘struct hmac_ctx_st’}
     memset(ctx, 0, sizeof(HMAC_CTX));
                           ^~~~~~~~
make[2]: *** [Makefile:301: openssl_missing.o] Error 1
make[2]: *** Waiting for unfinished jobs....
linking shared-object bigdecimal.so
In file included from ossl.h:57,
                 from ossl_bn.c:11:
/usr/include/openssl/asn1_mac.h:10:2: error: #error "This file is obsolete; please update your software."
 #error "This file is obsolete; please update your software."
  ^~~~~
In file included from ossl.h:57,
                 from ossl.c:10:
/usr/include/openssl/asn1_mac.h:10:2: error: #error "This file is obsolete; please update your software."
 #error "This file is obsolete; please update your software."
  ^~~~~
In file included from ossl.h:57,
                 from ossl_cipher.c:10:
/usr/include/openssl/asn1_mac.h:10:2: error: #error "This file is obsolete; please update your software."
 #error "This file is obsolete; please update your software."
  ^~~~~
In file included from ossl.h:57,
                 from ossl_asn1.c:10:
/usr/include/openssl/asn1_mac.h:10:2: error: #error "This file is obsolete; please update your software."
 #error "This file is obsolete; please update your software."
  ^~~~~
linking shared-object json/ext/generator.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/bigdecimal'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
In file included from ossl.h:57,
                 from ossl_bio.c:10:
/usr/include/openssl/asn1_mac.h:10:2: error: #error "This file is obsolete; please update your software."
 #error "This file is obsolete; please update your software."
  ^~~~~
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/json/parser'
compiling psych.c
compiling psych_emitter.c
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
In file included from ossl.h:222,
                 from ossl.c:10:
openssl_missing.h:78:35: error: macro "EVP_MD_CTX_create" passed 1 arguments, but takes just 0
 EVP_MD_CTX *EVP_MD_CTX_create(void);
                                   ^
In file included from /usr/include/openssl/x509.h:18,
                 from /usr/include/openssl/x509v3.h:14,
                 from ossl.h:58,
                 from ossl.c:10:
openssl_missing.h:82:6: error: expected declaration specifiers or ‘...’ before ‘(’ token
 void EVP_MD_CTX_init(EVP_MD_CTX *ctx);
      ^~~~~~~~~~~~~~~
openssl_missing.h:90:6: error: expected declaration specifiers or ‘...’ before ‘(’ token
 void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx);
      ^~~~~~~~~~~~~~~~~~
In file included from ossl.h:236,
                 from ossl.c:10:
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if HAVE_BN_GENCB
     ^~~~~~~~~~~~~
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
ossl.c: In function ‘ossl_protect_x509_ary2sk’:
ossl.c:80:6: warning: cast between incompatible function types from ‘struct stack_st_X509 * (*)(VALUE)’ {aka ‘struct stack_st_X509 * (*)(long unsigned int)’} to ‘VALUE (*)(VALUE)’ {aka ‘long unsigned int (*)(long unsigned int)’} [-Wcast-function-type]
      (VALUE(*)_((VALUE)))ossl_##name##_ary2sk0,  \
      ^
ossl.c:96:1: note: in expansion of macro ‘OSSL_IMPL_ARY2SK’
 OSSL_IMPL_ARY2SK(x509, X509, cX509Cert, DupX509CertPtr)
 ^~~~~~~~~~~~~~~~
ossl.c: In function ‘ossl_buf2str’:
ossl.c:139:22: warning: cast between incompatible function types from ‘VALUE (*)(int)’ {aka ‘long unsigned int (*)(int)’} to ‘VALUE (*)(VALUE)’ {aka ‘long unsigned int (*)(long unsigned int)’} [-Wcast-function-type]
     str = rb_protect((VALUE(*)_((VALUE)))ossl_str_new, len, &status);
                      ^
ossl.c: In function ‘ossl_verify_cb’:
ossl.c:220:42: error: dereferencing pointer to incomplete type ‘X509_STORE_CTX’ {aka ‘struct x509_store_ctx_st’}
  proc = (VALUE)X509_STORE_get_ex_data(ctx->ctx, ossl_store_ex_verify_cb_idx);
                                          ^~
ossl.c:225:20: warning: cast between incompatible function types from ‘VALUE (*)(X509_STORE_CTX *)’ {aka ‘long unsigned int (*)(struct x509_store_ctx_st *)’} to ‘VALUE (*)(VALUE)’ {aka ‘long unsigned int (*)(long unsigned int)’} [-Wcast-function-type]
  rctx = rb_protect((VALUE(*)(VALUE))ossl_x509stctx_new,
                    ^
ossl.c:235:23: warning: cast between incompatible function types from ‘VALUE (*)(struct ossl_verify_cb_args *)’ {aka ‘long unsigned int (*)(struct ossl_verify_cb_args *)’} to ‘VALUE (*)(VALUE)’ {aka ‘long unsigned int (*)(long unsigned int)’} [-Wcast-function-type]
      ret = rb_protect((VALUE(*)(VALUE))ossl_call_verify_cb_proc, (VALUE)&args, &state);
                       ^
At top level:
ossl.c:545:1: warning: ‘ossl_lock_callback’ defined but not used [-Wunused-function]
 ossl_lock_callback(int mode, int type, const char *file, int line)
 ^~~~~~~~~~~~~~~~~~
ossl.c:535:22: warning: ‘ossl_thread_id’ defined but not used [-Wunused-function]
 static unsigned long ossl_thread_id(void)
                      ^~~~~~~~~~~~~~
ossl.c:522:1: warning: ‘ossl_dyn_destroy_callback’ defined but not used [-Wunused-function]
 ossl_dyn_destroy_callback(struct CRYPTO_dynlock_value *l, const char *file, int line)
 ^~~~~~~~~~~~~~~~~~~~~~~~~
ossl.c:516:1: warning: ‘ossl_dyn_lock_callback’ defined but not used [-Wunused-function]
 ossl_dyn_lock_callback(int mode, struct CRYPTO_dynlock_value *l, const char *file, int line)
 ^~~~~~~~~~~~~~~~~~~~~~
ossl.c:504:1: warning: ‘ossl_dyn_create_callback’ defined but not used [-Wunused-function]
 ossl_dyn_create_callback(const char *file, int line)
 ^~~~~~~~~~~~~~~~~~~~~~~~
In file included from ossl.h:222,
                 from ossl_bn.c:11:
openssl_missing.h:78:35: error: macro "EVP_MD_CTX_create" passed 1 arguments, but takes just 0
 EVP_MD_CTX *EVP_MD_CTX_create(void);
                                   ^
In file included from /usr/include/openssl/x509.h:18,
                 from /usr/include/openssl/x509v3.h:14,
                 from ossl.h:58,
                 from ossl_bn.c:11:
openssl_missing.h:82:6: error: expected declaration specifiers or ‘...’ before ‘(’ token
 void EVP_MD_CTX_init(EVP_MD_CTX *ctx);
      ^~~~~~~~~~~~~~~
openssl_missing.h:90:6: error: expected declaration specifiers or ‘...’ before ‘(’ token
 void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx);
      ^~~~~~~~~~~~~~~~~~
In file included from ossl.h:236,
                 from ossl_bn.c:11:
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if HAVE_BN_GENCB
     ^~~~~~~~~~~~~
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
ossl_bn.c: In function ‘ossl_bn_size’:
ossl_bn.c:43:19: error: invalid application of ‘sizeof’ to incomplete type ‘BIGNUM’ {aka ‘struct bignum_st’}
     return sizeof(BIGNUM);
                   ^~~~~~
In file included from ossl.h:222,
                 from ossl_cipher.c:10:
openssl_missing.h:78:35: error: macro "EVP_MD_CTX_create" passed 1 arguments, but takes just 0
 EVP_MD_CTX *EVP_MD_CTX_create(void);
                                   ^
In file included from /usr/include/openssl/x509.h:18,
                 from /usr/include/openssl/x509v3.h:14,
                 from ossl.h:58,
                 from ossl_cipher.c:10:
openssl_missing.h:82:6: error: expected declaration specifiers or ‘...’ before ‘(’ token
 void EVP_MD_CTX_init(EVP_MD_CTX *ctx);
      ^~~~~~~~~~~~~~~
openssl_missing.h:90:6: error: expected declaration specifiers or ‘...’ before ‘(’ token
 void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx);
      ^~~~~~~~~~~~~~~~~~
In file included from ossl.h:236,
                 from ossl_cipher.c:10:
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if HAVE_BN_GENCB
     ^~~~~~~~~~~~~
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
ossl_bn.c: In function ‘ossl_bn_s_generate_prime’:
ossl_bn.c:775:5: warning: ‘BN_generate_prime’ is deprecated [-Wdeprecated-declarations]
     if (!BN_generate_prime(result, num, safe, add, rem, NULL, NULL)) {
     ^~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from ossl.h:56,
                 from ossl_bn.c:11:
/usr/include/openssl/bn.h:326:1: note: declared here
 DEPRECATEDIN_0_9_8(BIGNUM *BN_generate_prime(BIGNUM *ret, int bits, int safe,
 ^~~~~~~~~~~~~~~~~~
In file included from ../.././include/ruby.h:33,
                 from ossl.h:30,
                 from ossl_cipher.c:10:
ossl_cipher.c: In function ‘ossl_cipher_new’:
ossl_cipher.c:17:37: error: invalid application of ‘sizeof’ to incomplete type ‘EVP_CIPHER_CTX’ {aka ‘struct evp_cipher_ctx_st’}
     (DATA_PTR(obj) = (ctx) = ZALLOC(EVP_CIPHER_CTX))
                                     ^~~~~~~~~~~~~~
../.././include/ruby/ruby.h:1599:61: note: in definition of macro ‘RB_ZALLOC_N’
 #define RB_ZALLOC_N(type,n) ((type*)ruby_xcalloc((n),sizeof(type)))
                                                             ^~~~
../.././include/ruby/ruby.h:1606:22: note: in expansion of macro ‘RB_ZALLOC’
 #define ZALLOC(type) RB_ZALLOC(type)
                      ^~~~~~~~~
ossl_cipher.c:17:30: note: in expansion of macro ‘ZALLOC’
     (DATA_PTR(obj) = (ctx) = ZALLOC(EVP_CIPHER_CTX))
                              ^~~~~~
ossl_cipher.c:70:5: note: in expansion of macro ‘AllocCipher’
     AllocCipher(ret, ctx);
     ^~~~~~~~~~~
ossl_cipher.c: In function ‘ossl_cipher_memsize’:
ossl_cipher.c:95:19: error: dereferencing pointer to incomplete type ‘EVP_CIPHER_CTX’ {aka ‘const struct evp_cipher_ctx_st’}
     return sizeof(*ctx);
                   ^~~~
In file included from ../.././include/ruby.h:33,
                 from ossl.h:30,
                 from ossl_cipher.c:10:
ossl_cipher.c: In function ‘ossl_cipher_initialize’:
ossl_cipher.c:17:37: error: invalid application of ‘sizeof’ to incomplete type ‘EVP_CIPHER_CTX’ {aka ‘struct evp_cipher_ctx_st’}
     (DATA_PTR(obj) = (ctx) = ZALLOC(EVP_CIPHER_CTX))
                                     ^~~~~~~~~~~~~~
../.././include/ruby/ruby.h:1599:61: note: in definition of macro ‘RB_ZALLOC_N’
 #define RB_ZALLOC_N(type,n) ((type*)ruby_xcalloc((n),sizeof(type)))
                                                             ^~~~
../.././include/ruby/ruby.h:1606:22: note: in expansion of macro ‘RB_ZALLOC’
 #define ZALLOC(type) RB_ZALLOC(type)
                      ^~~~~~~~~
ossl_cipher.c:17:30: note: in expansion of macro ‘ZALLOC’
     (DATA_PTR(obj) = (ctx) = ZALLOC(EVP_CIPHER_CTX))
                              ^~~~~~
ossl_cipher.c:124:5: note: in expansion of macro ‘AllocCipher’
     AllocCipher(self, ctx);
     ^~~~~~~~~~~
ossl_cipher.c: In function ‘ossl_cipher_copy’:
ossl_cipher.c:17:37: error: invalid application of ‘sizeof’ to incomplete type ‘EVP_CIPHER_CTX’ {aka ‘struct evp_cipher_ctx_st’}
     (DATA_PTR(obj) = (ctx) = ZALLOC(EVP_CIPHER_CTX))
                                     ^~~~~~~~~~~~~~
../.././include/ruby/ruby.h:1599:61: note: in definition of macro ‘RB_ZALLOC_N’
 #define RB_ZALLOC_N(type,n) ((type*)ruby_xcalloc((n),sizeof(type)))
                                                             ^~~~
../.././include/ruby/ruby.h:1606:22: note: in expansion of macro ‘RB_ZALLOC’
 #define ZALLOC(type) RB_ZALLOC(type)
                      ^~~~~~~~~
ossl_cipher.c:17:30: note: in expansion of macro ‘ZALLOC’
     (DATA_PTR(obj) = (ctx) = ZALLOC(EVP_CIPHER_CTX))
                              ^~~~~~
ossl_cipher.c:145:2: note: in expansion of macro ‘AllocCipher’
  AllocCipher(self, ctx1);
  ^~~~~~~~~~~
ossl_cipher.c: In function ‘ossl_s_ciphers’:
ossl_cipher.c:177:21: warning: cast between incompatible function types from ‘void * (*)(const OBJ_NAME *, VALUE)’ {aka ‘void * (*)(const struct obj_name_st *, long unsigned int)’} to ‘void (*)(const OBJ_NAME *, void *)’ {aka ‘void (*)(const struct obj_name_st *, void *)’} [-Wcast-function-type]
                     (void(*)(const OBJ_NAME*,void*))add_cipher_name_to_ary,
                     ^
ossl_bn.c: In function ‘ossl_bn_is_prime’:
ossl_bn.c:940:5: warning: ‘BN_is_prime’ is deprecated [-Wdeprecated-declarations]
     switch (BN_is_prime(bn, checks, NULL, ossl_bn_ctx, NULL)) {
     ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from ossl.h:56,
                 from ossl_bn.c:11:
/usr/include/openssl/bn.h:332:1: note: declared here
 DEPRECATEDIN_0_9_8(int
 ^~~~~~~~~~~~~~~~~~
ossl_bn.c: In function ‘ossl_bn_is_prime_fasttest’:
ossl_bn.c:979:5: warning: ‘BN_is_prime_fasttest’ is deprecated [-Wdeprecated-declarations]
     switch (BN_is_prime_fasttest(bn, checks, NULL, ossl_bn_ctx, NULL, do_trial_division)) {
     ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from ossl.h:56,
                 from ossl_bn.c:11:
/usr/include/openssl/bn.h:336:1: note: declared here
 DEPRECATEDIN_0_9_8(int
 ^~~~~~~~~~~~~~~~~~
compiling pty.c
In file included from ossl.h:57,
                 from ossl_digest.c:10:
/usr/include/openssl/asn1_mac.h:10:2: error: #error "This file is obsolete; please update your software."
 #error "This file is obsolete; please update your software."
  ^~~~~
ossl_bn.c: In function ‘ossl_bn_size’:
ossl_bn.c:44:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
linking shared-object objspace.so
In file included from ossl.h:57,
                 from ossl_config.c:10:
/usr/include/openssl/asn1_mac.h:10:2: error: #error "This file is obsolete; please update your software."
 #error "This file is obsolete; please update your software."
  ^~~~~
In file included from ossl.h:222,
                 from ossl_asn1.c:10:
openssl_missing.h:78:35: error: macro "EVP_MD_CTX_create" passed 1 arguments, but takes just 0
 EVP_MD_CTX *EVP_MD_CTX_create(void);
                                   ^
In file included from /usr/include/openssl/x509.h:18,
                 from /usr/include/openssl/x509v3.h:14,
                 from ossl.h:58,
                 from ossl_asn1.c:10:
openssl_missing.h:82:6: error: expected declaration specifiers or ‘...’ before ‘(’ token
 void EVP_MD_CTX_init(EVP_MD_CTX *ctx);
      ^~~~~~~~~~~~~~~
openssl_missing.h:90:6: error: expected declaration specifiers or ‘...’ before ‘(’ token
 void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx);
      ^~~~~~~~~~~~~~~~~~
In file included from ossl.h:236,
                 from ossl_asn1.c:10:
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if HAVE_BN_GENCB
     ^~~~~~~~~~~~~
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
ossl_cipher.c: In function ‘ossl_cipher_memsize’:
ossl_cipher.c:96:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
ossl_asn1.c: In function ‘decode_bool’:
ossl_asn1.c:354:15: warning: implicit declaration of function ‘d2i_ASN1_BOOLEAN’; did you mean ‘V_ASN1_BOOLEAN’? [-Wimplicit-function-declaration]
     if((val = d2i_ASN1_BOOLEAN(NULL, &p, length)) < 0)
               ^~~~~~~~~~~~~~~~
               V_ASN1_BOOLEAN
ossl_asn1.c: In function ‘decode_int’:
ossl_asn1.c:371:22: warning: cast between incompatible function types from ‘VALUE (*)(ASN1_INTEGER *)’ {aka ‘long unsigned int (*)(struct asn1_string_st *)’} to ‘VALUE (*)(VALUE)’ {aka ‘long unsigned int (*)(long unsigned int)’} [-Wcast-function-type]
     ret = rb_protect((VALUE(*)_((VALUE)))asn1integer_to_num,
                      ^
ossl_asn1.c: In function ‘decode_enum’:
ossl_asn1.c:411:22: warning: cast between incompatible function types from ‘VALUE (*)(ASN1_INTEGER *)’ {aka ‘long unsigned int (*)(struct asn1_string_st *)’} to ‘VALUE (*)(VALUE)’ {aka ‘long unsigned int (*)(long unsigned int)’} [-Wcast-function-type]
     ret = rb_protect((VALUE(*)_((VALUE)))asn1integer_to_num,
                      ^
ossl_asn1.c: In function ‘decode_time’:
ossl_asn1.c:473:22: warning: cast between incompatible function types from ‘VALUE (*)(ASN1_TIME *)’ {aka ‘long unsigned int (*)(struct asn1_string_st *)’} to ‘VALUE (*)(VALUE)’ {aka ‘long unsigned int (*)(long unsigned int)’} [-Wcast-function-type]
     ret = rb_protect((VALUE(*)_((VALUE)))asn1time_to_time,
                      ^
installing default pty libraries
make[2]: *** [Makefile:301: ossl.o] Error 1
make[2]: *** [Makefile:301: ossl_bn.o] Error 1
compiling psych_parser.c
make[2]: *** [Makefile:301: ossl_cipher.o] Error 1
In file included from ossl.h:222,
                 from ossl_bio.c:10:
openssl_missing.h:78:35: error: macro "EVP_MD_CTX_create" passed 1 arguments, but takes just 0
 EVP_MD_CTX *EVP_MD_CTX_create(void);
                                   ^
In file included from /usr/include/openssl/x509.h:18,
                 from /usr/include/openssl/x509v3.h:14,
                 from ossl.h:58,
                 from ossl_bio.c:10:
openssl_missing.h:82:6: error: expected declaration specifiers or ‘...’ before ‘(’ token
 void EVP_MD_CTX_init(EVP_MD_CTX *ctx);
      ^~~~~~~~~~~~~~~
openssl_missing.h:90:6: error: expected declaration specifiers or ‘...’ before ‘(’ token
 void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx);
      ^~~~~~~~~~~~~~~~~~
In file included from ossl.h:236,
                 from ossl_bio.c:10:
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if HAVE_BN_GENCB
     ^~~~~~~~~~~~~
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
ossl_bio.c: In function ‘ossl_protect_membio2str’:
ossl_bio.c:47:23: warning: cast between incompatible function types from ‘VALUE (*)(BIO *)’ {aka ‘long unsigned int (*)(struct bio_st *)’} to ‘VALUE (*)(VALUE)’ {aka ‘long unsigned int (*)(long unsigned int)’} [-Wcast-function-type]
     return rb_protect((VALUE(*)_((VALUE)))ossl_membio2str0, (VALUE)bio, status);
                       ^
compiling psych_to_ruby.c
make[2]: *** [Makefile:301: ossl_asn1.o] Error 1
make[2]: *** [Makefile:301: ossl_bio.o] Error 1
compiling psych_yaml_tree.c
In file included from ossl.h:222,
                 from ossl_digest.c:10:
openssl_missing.h:78:35: error: macro "EVP_MD_CTX_create" passed 1 arguments, but takes just 0
 EVP_MD_CTX *EVP_MD_CTX_create(void);
                                   ^
In file included from /usr/include/openssl/x509.h:18,
                 from /usr/include/openssl/x509v3.h:14,
                 from ossl.h:58,
                 from ossl_digest.c:10:
openssl_missing.h:82:6: error: expected declaration specifiers or ‘...’ before ‘(’ token
 void EVP_MD_CTX_init(EVP_MD_CTX *ctx);
      ^~~~~~~~~~~~~~~
openssl_missing.h:90:6: error: expected declaration specifiers or ‘...’ before ‘(’ token
 void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx);
      ^~~~~~~~~~~~~~~~~~
In file included from ossl.h:236,
                 from ossl_digest.c:10:
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if HAVE_BN_GENCB
     ^~~~~~~~~~~~~
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
In file included from ossl.h:222,
                 from ossl_config.c:10:
openssl_missing.h:78:35: error: macro "EVP_MD_CTX_create" passed 1 arguments, but takes just 0
 EVP_MD_CTX *EVP_MD_CTX_create(void);
                                   ^
In file included from /usr/include/openssl/x509.h:18,
                 from /usr/include/openssl/x509v3.h:14,
                 from ossl.h:58,
                 from ossl_config.c:10:
openssl_missing.h:82:6: error: expected declaration specifiers or ‘...’ before ‘(’ token
 void EVP_MD_CTX_init(EVP_MD_CTX *ctx);
      ^~~~~~~~~~~~~~~
openssl_missing.h:90:6: error: expected declaration specifiers or ‘...’ before ‘(’ token
 void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx);
      ^~~~~~~~~~~~~~~~~~
In file included from ossl.h:236,
                 from ossl_config.c:10:
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if HAVE_BN_GENCB
     ^~~~~~~~~~~~~
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
ossl_pkey.h:45:5: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/json/generator'
make[2]: Entering directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: *** [Makefile:301: ossl_config.o] Error 1
make[2]: *** [Makefile:301: ossl_digest.o] Error 1
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/openssl'
compiling cparse.c
make[1]: *** [exts.mk:212: ext/openssl/all] Error 2
make[1]: *** Waiting for unfinished jobs....
linking shared-object date_core.so
In file included from pty.c:36:
../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
 #if GCC_VERSION_SINCE(4, 6, 0) || __has_extension(c_static_assert)
                              ^
../../internal.h:84:30: warning: this use of "defined" may not be portable [-Wexpansion-to-defined]
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/objspace'
linking shared-object pathname.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/date'
linking shared-object pty.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/pathname'
installing default psych libraries
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/pty'
linking shared-object psych.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/psych'
linking shared-object racc/cparse.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/racc/cparse'
linking shared-object nkf.so
make[2]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8/ext/nkf'
make[1]: Leaving directory '/tmp/ruby-build.20181107195637.23913/ruby-2.3.8'
make: *** [uncommon.mk:203: build-ext] Error 2