mkmf log

have_func: checking for rb_thread_blocking_region()... -------------------- no

"gcc -o conftest -I/Users/name/.rvm/rubies/ruby-2.2.1/include/ruby-2.2.0/x86_64-darwin14 -I/Users/name/.rvm/rubies/ruby-2.2.1/include/ruby-2.2.0/ruby/backward -I/Users/name/.rvm/rubies/ruby-2.2.1/include/ruby-2.2.0 -I. -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT   -O3 -I/Users/haven/.sm/pkg/active/include -fPIC -mmacosx-version-min=10.7 -pipe conftest.c  -L. -L/Users/name/.rvm/rubies/ruby-2.2.1/lib -L. -L/Users/haven/.sm/pkg/active/lib -fPIC -Bstatic -lz -fstack-protector   -arch x86_64   -lruby-static -framework CoreFoundation  -lpthread -ldl -lobjc "
conftest.c:13:57: error: use of undeclared identifier 'rb_thread_blocking_region'
int t(void) { void ((*volatile p)()); p = (void ((*)()))rb_thread_blocking_region; return 0; }
                                                        ^
1 error generated.
checked program was:
/* begin */
 1: #include "ruby.h"
 2:
 3: /*top*/
 4: extern int t(void);
 5: int main(int argc, char **argv)
 6: {
 7:   if (argc > 1000000) {
 8:     printf("%p", &t);
 9:   }
10:
11:   return 0;
12: }
13: int t(void) { void ((*volatile p)()); p = (void ((*)()))rb_thread_blocking_region; return 0; }
/* end */

"gcc -o conftest -I/Users/name/.rvm/rubies/ruby-2.2.1/include/ruby-2.2.0/x86_64-darwin14 -I/Users/name/.rvm/rubies/ruby-2.2.1/include/ruby-2.2.0/ruby/backward -I/Users/name/.rvm/rubies/ruby-2.2.1/include/ruby-2.2.0 -I. -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT   -O3 -I/Users/haven/.sm/pkg/active/include -fPIC -mmacosx-version-min=10.7 -pipe conftest.c  -L. -L/Users/name/.rvm/rubies/ruby-2.2.1/lib -L. -L/Users/haven/.sm/pkg/active/lib -fPIC -Bstatic -lz -fstack-protector   -arch x86_64   -lruby-static -framework CoreFoundation  -lpthread -ldl -lobjc "
conftest.c:13:15: warning: implicit declaration of function 'rb_thread_blocking_region' is invalid in C99 [-Wimplicit-function-declaration]
int t(void) { rb_thread_blocking_region(); return 0; }
              ^
1 warning generated.
ld: warning: directory not found for option '-L/Users/haven/.sm/pkg/active/lib'
Undefined symbols for architecture x86_64:
  "_rb_thread_blocking_region", referenced from:
      _t in conftest-cabe55.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
checked program was:
/* begin */
 1: #include "ruby.h"
 2:
 3: /*top*/
 4: extern int t(void);
 5: int main(int argc, char **argv)
 6: {
 7:   if (argc > 1000000) {
 8:     printf("%p", &t);
 9:   }
10:
11:   return 0;
12: }
13: int t(void) { rb_thread_blocking_region(); return 0; }
/* end */