/tmp/ruby-build.20181030160655.8597 ~
/tmp/ruby-build.20181030160655.8597/ruby-2.3.8 /tmp/ruby-build.20181030160655.8597 ~
checking for ruby... /home/duybui/.rbenv/shims/ruby
config.guess already exists
config.sub already exists
checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
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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 8.2.0-8' --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 8.2.0-8)
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 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]
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 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]
compiling dir.c
compiling dln_find.c
compiling encoding.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]
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 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]
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]
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:
       ^~~~~~~
compiling enumerator.c
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]
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
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;
        ^~~
compiling load.c
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]
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:
       ^~~~
compiling proc.c
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
compiling inits.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]
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]
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 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]
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);
                                ^
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:
     ^~~~
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
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]
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:
       ^~~~
compiling marshal.c
compiling math.c
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);
        ^~~~
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]
compiling node.c
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]
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
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]
compiling parse.c
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':
       ^~~~
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]
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:
    ^~~~
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 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]
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:
       ^~~~
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]
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]
compiling regcomp.c
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':
     ^~~~
compiling safe.c
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]
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:
    ^~~~~~~
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]
compiling signal.c
compiling sprintf.c
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;
         ^
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)
                                                                           ^~~~~~~
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':
   ^~~~
compiling st.c
compiling strftime.c
compiling string.c
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]
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;
  ^~~~~~~~~~~~~~~~~
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]
compiling struct.c
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
compiling transcode.c
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]
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 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]
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:
    ^~~~
compiling util.c
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]
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 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]
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.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]
compiling vm_dump.c
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);
                       ^
compiling vm_backtrace.c
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:
    ^~~~
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]
compiling vm_trace.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);
                                 ^
compiling thread.c
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
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]
compiling prelude.c
compiling enc/ascii.c
compiling enc/us_ascii.c
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/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.20181030160655.8597/ruby-2.3.8'
make[1]: Nothing to be done for 'srcs'.
make[1]: Leaving directory '/tmp/ruby-build.20181030160655.8597/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.20181030160655.8597/ruby-2.3.8'
make[1]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
compiling ./enc/encdb.c
compiling ./enc/trans/transdb.c
compiling ./enc/big5.c
compiling ./enc/trans/big5.c
compiling ./enc/cp949.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
configuring -test-/dln/empty
configuring -test-/exception
configuring -test-/fatal
configuring -test-/file
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]
compiling ./enc/trans/ebcdic.c
compiling ./enc/trans/emoji.c
compiling ./enc/euc_jp.c
compiling ./enc/trans/emoji_iso2022_kddi.c
compiling ./enc/euc_kr.c
compiling ./enc/trans/emoji_sjis_docomo.c
compiling ./enc/euc_tw.c
compiling ./enc/trans/emoji_sjis_kddi.c
compiling ./enc/trans/emoji_sjis_softbank.c
compiling ./enc/gb2312.c
compiling ./enc/trans/escape.c
compiling ./enc/trans/gb18030.c
compiling ./enc/trans/gbk.c
compiling ./enc/trans/iso2022.c
compiling ./enc/gb18030.c
compiling ./enc/trans/japanese.c
compiling ./enc/trans/japanese_euc.c
compiling ./enc/gbk.c
compiling ./enc/trans/japanese_sjis.c
compiling ./enc/trans/korean.c
compiling ./enc/iso_8859_1.c
compiling ./enc/trans/single_byte.c
compiling ./enc/iso_8859_2.c
compiling ./enc/trans/utf8_mac.c
compiling ./enc/trans/utf_16_32.c
linking transcoder transdb.so
linking transcoder big5.so
compiling ./enc/iso_8859_3.c
linking transcoder chinese.so
linking transcoder ebcdic.so
linking transcoder emoji.so
compiling ./enc/iso_8859_4.c
linking transcoder emoji_iso2022_kddi.so
linking transcoder emoji_sjis_docomo.so
configuring -test-/float
configuring -test-/funcall
linking transcoder emoji_sjis_kddi.so
configuring -test-/gvl/call_without_gvl
configuring -test-/hash
configuring -test-/iseq_load
configuring -test-/iter
configuring -test-/load/dot.dot
configuring -test-/marshal/compat
configuring -test-/marshal/internal_ivar
configuring -test-/marshal/usr
linking transcoder emoji_sjis_softbank.so
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
configuring -test-/recursion
compiling ./enc/iso_8859_5.c
configuring -test-/st/foreach
compiling ./enc/iso_8859_6.c
configuring -test-/st/numhash
configuring -test-/st/update
configuring -test-/string
configuring -test-/struct
configuring -test-/symbol
linking transcoder escape.so
linking transcoder gb18030.so
linking transcoder gbk.so
linking transcoder iso2022.so
linking transcoder japanese.so
compiling ./enc/iso_8859_7.c
linking transcoder japanese_sjis.so
linking transcoder korean.so
compiling ./enc/iso_8859_8.c
linking transcoder single_byte.so
linking transcoder utf_16_32.so
linking transcoder japanese_euc.so
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/iso_8859_14.c
configuring -test-/thread_fd_close
configuring -test-/time
compiling ./enc/iso_8859_15.c
configuring -test-/tracepoint
configuring -test-/typeddata
configuring -test-/vm
configuring -test-/wait_for_single_fd
configuring bigdecimal
compiling ./enc/iso_8859_16.c
compiling ./enc/koi8_r.c
compiling ./enc/koi8_u.c
compiling ./enc/shift_jis.c
linking transcoder utf8_mac.so
compiling ./enc/utf_16be.c
compiling ./enc/utf_16le.c
compiling ./enc/utf_32be.c
compiling ./enc/utf_32le.c
make[1]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
compiling ./enc/windows_31j.c
compiling ./enc/windows_1250.c
compiling ./enc/windows_1251.c
compiling ./enc/windows_1252.c
linking encoding encdb.so
linking encoding big5.so
linking encoding cp949.so
linking encoding emacs_mule.so
linking encoding euc_jp.so
linking encoding euc_kr.so
linking encoding euc_tw.so
linking encoding gb2312.so
linking encoding gb18030.so
linking encoding gbk.so
linking encoding iso_8859_1.so
linking encoding iso_8859_2.so
linking encoding iso_8859_3.so
linking encoding iso_8859_4.so
linking encoding iso_8859_5.so
linking encoding iso_8859_6.so
linking encoding iso_8859_7.so
linking encoding iso_8859_8.so
linking encoding iso_8859_9.so
linking encoding iso_8859_10.so
linking encoding iso_8859_11.so
linking encoding iso_8859_13.so
linking encoding iso_8859_14.so
linking encoding iso_8859_15.so
linking encoding iso_8859_16.so
linking encoding koi8_r.so
linking encoding koi8_u.so
linking encoding shift_jis.so
linking encoding utf_16be.so
linking encoding utf_32be.so
linking encoding utf_16le.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.20181030160655.8597/ruby-2.3.8'
making encs
make[1]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[1]: Leaving directory '/tmp/ruby-build.20181030160655.8597/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.20181030160655.8597/ruby-2.3.8'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling big2str.c
compiling resize.c
compiling bug.c
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling bigzero.c
compiling bug_reporter.c
compiling bug.c
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling class2name.c
compiling div.c
compiling init.c
compiling init.c
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling inspector.c
compiling init.c
compiling empty.c
compiling intpack.c
compiling mul.c
compiling profile_frames.c
compiling str2big.c
linking shared-object -test-/dln/empty.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/dln/empty'
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]
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
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]
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]
compiling dataerror.c
compiling enc_raise.c
linking shared-object -test-/bug_reporter/bug_reporter.so
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-/array/resize.so
compiling init.c
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 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-/bug-3571/bug.so
linking shared-object -test-/bug-5832/bug.so
linking shared-object -test-/debug.so
linking shared-object -test-/class.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/bug_reporter'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/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.20181030160655.8597/ruby-2.3.8/ext/-test-/array/resize'
linking shared-object -test-/bignum.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/bug-5832'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/bug-3571'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling fs.c
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling init.c
compiling init.c
compiling nextafter.c
compiling passing_block.c
compiling stat.c
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/debug'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling call_without_gvl.c
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/class'
linking shared-object -test-/exception.so
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling delete.c
compiling init.c
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/bignum'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
linking shared-object -test-/fatal/rb_fatal.so
compiling iseq_load.c
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/exception'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
linking shared-object -test-/funcall/funcall.so
compiling break.c
compiling init.c
compiling yield.c
linking shared-object -test-/float.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/fatal'
linking shared-object -test-/gvl/call_without_gvl.so
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling dot.dot.c
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/funcall'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
linking shared-object -test-/iseq_load/iseq_load.so
compiling usrcompat.c
linking shared-object -test-/file.so
linking shared-object -test-/load/dot.dot/dot.dot.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/gvl/call_without_gvl'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling internal_ivar.c
linking shared-object -test-/hash.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/float'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling usrmarshal.c
linking shared-object -test-/iter.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/iseq_load'
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/file'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling arity.c
compiling bug.c
compiling init.c
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/load/dot.dot'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling num2int.c
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/hash'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/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.20181030160655.8597/ruby-2.3.8/ext/-test-/iter'
linking shared-object -test-/marshal/compat.so
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling infinite_loop_dlsym.c
linking shared-object -test-/marshal/internal_ivar.so
linking shared-object -test-/marshal/usr.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/marshal/compat'
linking shared-object -test-/notimplement.so
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
linking shared-object -test-/method.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/marshal/internal_ivar'
compiling postponed_job.c
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling printf.c
linking shared-object -test-/path_to_class/path_to_class.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/marshal/usr'
linking shared-object -test-/num2int/num2int.so
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling init.c
compiling receiver.c
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/notimplement'
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/method'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling super.c
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
linking shared-object -test-/popen_deadlock/infinite_loop_dlsym.so
compiling rat.c
compiling recursion.c
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/path_to_class'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling foreach.c
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/num2int'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling numhash.c
linking shared-object -test-/postponed_job.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/popen_deadlock'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling update.c
linking shared-object -test-/printf.so
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.20181030160655.8597/ruby-2.3.8/ext/-test-/postponed_job'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling coderange.c
compiling cstr.c
compiling ellipsize.c
compiling enc_associate.c
linking shared-object -test-/recursion.so
linking shared-object -test-/proc.so
compiling enc_str_buf_cat.c
linking shared-object -test-/rational.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/printf'
compiling fstring.c
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling init.c
compiling duplicate.c
compiling modify.c
linking shared-object -test-/st/numhash.so
compiling init.c
compiling member.c
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/proc'
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/recursion'
linking shared-object -test-/st/foreach.so
linking shared-object -test-/st/update.so
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/rational'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling init.c
compiling type.c
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling thread_fd_close.c
compiling init.c
compiling new.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]
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/st/numhash'
compiling nofree.c
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/st/update'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling gc_hook.c
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/st/foreach'
compiling typeddata.c
compiling tracepoint.c
compiling normalize.c
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling at_exit.c
compiling qsort.c
compiling set_len.c
linking shared-object -test-/thread_fd_close.so
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]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/thread_fd_close'
linking shared-object -test-/symbol.so
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling wait_for_single_fd.c
linking shared-object -test-/vm/at_exit.so
linking shared-object -test-/time.so
linking shared-object -test-/struct.so
linking shared-object -test-/string.so
linking shared-object -test-/typeddata/typeddata.so
linking shared-object -test-/tracepoint.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/symbol'
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/vm'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling bigdecimal.c
compiling escape.c
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/struct'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/time'
compiling continuation.c
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling coverage.c
installing default bigdecimal libraries
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/typeddata'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/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
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/tracepoint'
compiling date_strptime.c
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/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.20181030160655.8597/ruby-2.3.8/ext/dbm'
linking shared-object -test-/wait_for_single_fd/wait_for_single_fd.so
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling digest.c
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/string'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
installing default date_core libraries
installing digest libraries
compiling bubblebabble.c
installing default digest libraries
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]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/-test-/wait_for_single_fd'
linking shared-object continuation.so
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling md5init.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':
    ^~~~
linking shared-object cgi/escape.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/continuation'
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:
       ^~~~
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,
     ^
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
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’:
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:
       ^~~~
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);
  ^~~~~~
compiling rmd160init.c
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:
       ^~~~
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:
       ^~~~
linking shared-object coverage.so
linking shared-object digest/bubblebabble.so
linking shared-object digest/md5.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/cgi/escape'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling sha1init.c
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,
     ^
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/coverage'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/digest/bubblebabble'
compiling sha2init.c
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
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,
     ^
generating constant definitions
installing default sha2 libraries
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/digest/md5'
linking shared-object digest/rmd160.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/digest'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling fcntl.c
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling fiber.c
compiling etc.c
linking shared-object digest/sha1.so
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 fiber.so
linking shared-object digest/sha2.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/digest/rmd160'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling closure.c
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/fiber'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/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.20181030160655.8597/ruby-2.3.8/ext/gdbm'
compiling conversions.c
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling fiddle.c
compiling console.c
compiling function.c
linking shared-object fcntl.so
compiling handle.c
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/digest/sha1'
installing default console libraries
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling pointer.c
compiling nonblock.c
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/digest/sha2'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling wait.c
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.20181030160655.8597/ruby-2.3.8/ext/fcntl'
installing default fiddle libraries
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
linking shared-object etc.so
installing default libraries
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/etc'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
linking shared-object io/nonblock.so
compiling generator.c
linking shared-object io/wait.so
linking shared-object io/console.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/json'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling parser.c
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/io/nonblock'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/io/wait'
compiling complex.c
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling rational.c
linking shared-object fiddle.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/io/console'
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]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling nkf.c
linking shared-object mathn/complex.so
installing default nkf libraries
linking shared-object mathn/rational.so
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 )
     ^
parser.c:2065:1: note: here
 case 8:
 ^~~~
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:
 ^~~~
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:
 ^~~~
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/mathn/complex'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/mathn/rational'
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/fiddle'
compiling object_tracing.c
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling objspace.c
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling openssl_missing.c
compiling ossl.c
compiling pathname.c
compiling ossl_asn1.c
installing default pathname libraries
compiling objspace_dump.c
compiling ossl_bio.c
compiling ossl_bn.c
compiling ossl_cipher.c
compiling ossl_config.c
compiling ossl_digest.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) {
  ^~
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.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 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....
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]
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 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]
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."
  ^~~~~
linking shared-object json/ext/parser.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_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: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)
 ^~~~~~~~~~~~~~~~~~~~~~~~
make[2]: *** [Makefile:301: ossl.o] Error 1
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."
  ^~~~~
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."
  ^~~~~
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/json/parser'
make[2]: Entering directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make[2]: warning: -j8 forced in submake: resetting jobserver mode.
compiling psych.c
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_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);
                       ^
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,
 ^~~~~~~~~~~~~~~~~~
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
 ^~~~~~~~~~~~~~~~~~
ossl_bn.c: In function ‘ossl_bn_size’:
ossl_bn.c:44:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
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."
  ^~~~~
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);
      ^~~~~~~~~~~~~~~~~~
make[2]: *** [Makefile:301: ossl_bn.o] Error 1
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]
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,
                     ^
make[2]: *** [Makefile:301: ossl_bio.o] Error 1
ossl_cipher.c: In function ‘ossl_cipher_memsize’:
ossl_cipher.c:96:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
compiling psych_emitter.c
make[2]: *** [Makefile:301: ossl_cipher.o] Error 1
compiling psych_parser.c
linking shared-object json/ext/generator.so
linking shared-object objspace.so
compiling psych_to_ruby.c
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]
compiling psych_yaml_tree.c
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: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_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]
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]
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,
                      ^
make[2]: *** [Makefile:301: ossl_config.o] Error 1
make[2]: *** [Makefile:301: ossl_digest.o] Error 1
linking shared-object bigdecimal.so
make[2]: *** [Makefile:301: ossl_asn1.o] Error 1
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/openssl'
make[1]: *** [exts.mk:212: ext/openssl/all] Error 2
make[1]: *** Waiting for unfinished jobs....
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/objspace'
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/json/generator'
linking shared-object pathname.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/bigdecimal'
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/pathname'
installing default psych libraries
linking shared-object psych.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/psych'
linking shared-object date_core.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/date'
linking shared-object nkf.so
make[2]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8/ext/nkf'
make[1]: Leaving directory '/tmp/ruby-build.20181030160655.8597/ruby-2.3.8'
make: *** [uncommon.mk:203: build-ext] Error 2