package configuration for libffi
cflags: -I/Users/davidnghiem/local/lib/libffi-3.0.11/include  
ldflags: -L/Users/davidnghiem/local/lib
libs: -lffi  

have_library: checking for ffi_call() in -lffi... -------------------- yes

"/Users/davidnghiem/local/bin/gcc -o conftest -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/x86_64-darwin12.2.1 -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/ruby/backward -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1 -I. -I/Users/davidnghiem/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE  -I/Users/davidnghiem/local/include -I/Users/davidnghiem/local/include -I/Users/davidnghiem/.yarvm/.rvm/usr/include -O2 -arch x86_64 -pipe -I/Users/davidnghiem/local/lib/libffi-3.0.11/include   conftest.c  -L. -L/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib -L. -L/Users/davidnghiem/local/lib -L/usr/local/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib  -L/Users/davidnghiem/local/lib     -lffi   -lruby-static  -lpthread -ldl -lobjc "
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: int main() {return 0;}
/* end */

"/Users/davidnghiem/local/bin/gcc -o conftest -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/x86_64-darwin12.2.1 -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/ruby/backward -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1 -I. -I/Users/davidnghiem/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE  -I/Users/davidnghiem/local/include -I/Users/davidnghiem/local/include -I/Users/davidnghiem/.yarvm/.rvm/usr/include -O2 -arch x86_64 -pipe -I/Users/davidnghiem/local/lib/libffi-3.0.11/include   conftest.c  -L. -L/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib -L. -L/Users/davidnghiem/local/lib -L/usr/local/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib  -L/Users/davidnghiem/local/lib     -lffi   -lruby-static -lffi  -lffi   -lpthread -ldl -lobjc "
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <ffi.h>
4: 
5: /*top*/
6: int main() {return 0;}
7: int t() { void ((*volatile p)()); p = (void ((*)()))ffi_call; return 0; }
/* end */

--------------------

have_func: checking for ffi_prep_closure()... -------------------- yes

"/Users/davidnghiem/local/bin/gcc -o conftest -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/x86_64-darwin12.2.1 -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/ruby/backward -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1 -I. -I/Users/davidnghiem/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE  -I/Users/davidnghiem/local/include -I/Users/davidnghiem/local/include -I/Users/davidnghiem/.yarvm/.rvm/usr/include -O2 -arch x86_64 -pipe -I/Users/davidnghiem/local/lib/libffi-3.0.11/include   conftest.c  -L. -L/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib -L. -L/Users/davidnghiem/local/lib -L/usr/local/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib  -L/Users/davidnghiem/local/lib    -lffi  -lffi   -lruby-static -lffi  -lffi   -lpthread -ldl -lobjc "
conftest.c: In function 't':
conftest.c:5: error: 'ffi_prep_closure' undeclared (first use in this function)
conftest.c:5: error: (Each undeclared identifier is reported only once
conftest.c:5: error: for each function it appears in.)
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: /*top*/
4: int main() {return 0;}
5: int t() { void ((*volatile p)()); p = (void ((*)()))ffi_prep_closure; return 0; }
/* end */

"/Users/davidnghiem/local/bin/gcc -o conftest -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/x86_64-darwin12.2.1 -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/ruby/backward -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1 -I. -I/Users/davidnghiem/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE  -I/Users/davidnghiem/local/include -I/Users/davidnghiem/local/include -I/Users/davidnghiem/.yarvm/.rvm/usr/include -O2 -arch x86_64 -pipe -I/Users/davidnghiem/local/lib/libffi-3.0.11/include   conftest.c  -L. -L/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib -L. -L/Users/davidnghiem/local/lib -L/usr/local/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib  -L/Users/davidnghiem/local/lib    -lffi  -lffi   -lruby-static -lffi  -lffi   -lpthread -ldl -lobjc "
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: /*top*/
4: int main() {return 0;}
5: int t() { ffi_prep_closure(); return 0; }
/* end */

--------------------

have_func: checking for ffi_raw_call()... -------------------- yes

"/Users/davidnghiem/local/bin/gcc -o conftest -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/x86_64-darwin12.2.1 -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/ruby/backward -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1 -I. -I/Users/davidnghiem/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE  -I/Users/davidnghiem/local/include -I/Users/davidnghiem/local/include -I/Users/davidnghiem/.yarvm/.rvm/usr/include -O2 -arch x86_64 -pipe -I/Users/davidnghiem/local/lib/libffi-3.0.11/include   conftest.c  -L. -L/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib -L. -L/Users/davidnghiem/local/lib -L/usr/local/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib  -L/Users/davidnghiem/local/lib    -lffi  -lffi   -lruby-static -lffi  -lffi   -lpthread -ldl -lobjc "
conftest.c: In function 't':
conftest.c:5: error: 'ffi_raw_call' undeclared (first use in this function)
conftest.c:5: error: (Each undeclared identifier is reported only once
conftest.c:5: error: for each function it appears in.)
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: /*top*/
4: int main() {return 0;}
5: int t() { void ((*volatile p)()); p = (void ((*)()))ffi_raw_call; return 0; }
/* end */

"/Users/davidnghiem/local/bin/gcc -o conftest -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/x86_64-darwin12.2.1 -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/ruby/backward -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1 -I. -I/Users/davidnghiem/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE  -I/Users/davidnghiem/local/include -I/Users/davidnghiem/local/include -I/Users/davidnghiem/.yarvm/.rvm/usr/include -O2 -arch x86_64 -pipe -I/Users/davidnghiem/local/lib/libffi-3.0.11/include   conftest.c  -L. -L/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib -L. -L/Users/davidnghiem/local/lib -L/usr/local/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib  -L/Users/davidnghiem/local/lib    -lffi  -lffi   -lruby-static -lffi  -lffi   -lpthread -ldl -lobjc "
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: /*top*/
4: int main() {return 0;}
5: int t() { ffi_raw_call(); return 0; }
/* end */

--------------------

have_func: checking for ffi_prep_raw_closure()... -------------------- yes

"/Users/davidnghiem/local/bin/gcc -o conftest -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/x86_64-darwin12.2.1 -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/ruby/backward -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1 -I. -I/Users/davidnghiem/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE  -I/Users/davidnghiem/local/include -I/Users/davidnghiem/local/include -I/Users/davidnghiem/.yarvm/.rvm/usr/include -O2 -arch x86_64 -pipe -I/Users/davidnghiem/local/lib/libffi-3.0.11/include   conftest.c  -L. -L/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib -L. -L/Users/davidnghiem/local/lib -L/usr/local/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib  -L/Users/davidnghiem/local/lib    -lffi  -lffi   -lruby-static -lffi  -lffi   -lpthread -ldl -lobjc "
conftest.c: In function 't':
conftest.c:5: error: 'ffi_prep_raw_closure' undeclared (first use in this function)
conftest.c:5: error: (Each undeclared identifier is reported only once
conftest.c:5: error: for each function it appears in.)
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: /*top*/
4: int main() {return 0;}
5: int t() { void ((*volatile p)()); p = (void ((*)()))ffi_prep_raw_closure; return 0; }
/* end */

"/Users/davidnghiem/local/bin/gcc -o conftest -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/x86_64-darwin12.2.1 -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/ruby/backward -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1 -I. -I/Users/davidnghiem/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE  -I/Users/davidnghiem/local/include -I/Users/davidnghiem/local/include -I/Users/davidnghiem/.yarvm/.rvm/usr/include -O2 -arch x86_64 -pipe -I/Users/davidnghiem/local/lib/libffi-3.0.11/include   conftest.c  -L. -L/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib -L. -L/Users/davidnghiem/local/lib -L/usr/local/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib  -L/Users/davidnghiem/local/lib    -lffi  -lffi   -lruby-static -lffi  -lffi   -lpthread -ldl -lobjc "
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: /*top*/
4: int main() {return 0;}
5: int t() { ffi_prep_raw_closure(); return 0; }
/* end */

--------------------

have_func: checking for rb_thread_blocking_region()... -------------------- yes

"/Users/davidnghiem/local/bin/gcc -o conftest -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/x86_64-darwin12.2.1 -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/ruby/backward -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1 -I. -I/Users/davidnghiem/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE  -I/Users/davidnghiem/local/include -I/Users/davidnghiem/local/include -I/Users/davidnghiem/.yarvm/.rvm/usr/include -O2 -arch x86_64 -pipe -I/Users/davidnghiem/local/lib/libffi-3.0.11/include   conftest.c  -L. -L/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib -L. -L/Users/davidnghiem/local/lib -L/usr/local/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib  -L/Users/davidnghiem/local/lib    -lffi  -lffi   -lruby-static -lffi  -lffi   -lpthread -ldl -lobjc "
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: /*top*/
4: int main() {return 0;}
5: int t() { void ((*volatile p)()); p = (void ((*)()))rb_thread_blocking_region; return 0; }
/* end */

--------------------

have_func: checking for rb_thread_call_with_gvl()... -------------------- yes

"/Users/davidnghiem/local/bin/gcc -o conftest -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/x86_64-darwin12.2.1 -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/ruby/backward -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1 -I. -I/Users/davidnghiem/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE  -I/Users/davidnghiem/local/include -I/Users/davidnghiem/local/include -I/Users/davidnghiem/.yarvm/.rvm/usr/include -O2 -arch x86_64 -pipe -I/Users/davidnghiem/local/lib/libffi-3.0.11/include   conftest.c  -L. -L/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib -L. -L/Users/davidnghiem/local/lib -L/usr/local/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib  -L/Users/davidnghiem/local/lib    -lffi  -lffi   -lruby-static -lffi  -lffi   -lpthread -ldl -lobjc "
conftest.c: In function 't':
conftest.c:5: error: 'rb_thread_call_with_gvl' undeclared (first use in this function)
conftest.c:5: error: (Each undeclared identifier is reported only once
conftest.c:5: error: for each function it appears in.)
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: /*top*/
4: int main() {return 0;}
5: int t() { void ((*volatile p)()); p = (void ((*)()))rb_thread_call_with_gvl; return 0; }
/* end */

"/Users/davidnghiem/local/bin/gcc -o conftest -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/x86_64-darwin12.2.1 -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/ruby/backward -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1 -I. -I/Users/davidnghiem/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE  -I/Users/davidnghiem/local/include -I/Users/davidnghiem/local/include -I/Users/davidnghiem/.yarvm/.rvm/usr/include -O2 -arch x86_64 -pipe -I/Users/davidnghiem/local/lib/libffi-3.0.11/include   conftest.c  -L. -L/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib -L. -L/Users/davidnghiem/local/lib -L/usr/local/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib  -L/Users/davidnghiem/local/lib    -lffi  -lffi   -lruby-static -lffi  -lffi   -lpthread -ldl -lobjc "
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: /*top*/
4: int main() {return 0;}
5: int t() { rb_thread_call_with_gvl(); return 0; }
/* end */

--------------------

have_func: checking for rb_thread_call_without_gvl()... -------------------- yes

"/Users/davidnghiem/local/bin/gcc -o conftest -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/x86_64-darwin12.2.1 -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/ruby/backward -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1 -I. -I/Users/davidnghiem/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE  -I/Users/davidnghiem/local/include -I/Users/davidnghiem/local/include -I/Users/davidnghiem/.yarvm/.rvm/usr/include -O2 -arch x86_64 -pipe -I/Users/davidnghiem/local/lib/libffi-3.0.11/include   conftest.c  -L. -L/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib -L. -L/Users/davidnghiem/local/lib -L/usr/local/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib  -L/Users/davidnghiem/local/lib    -lffi  -lffi   -lruby-static -lffi  -lffi   -lpthread -ldl -lobjc "
conftest.c: In function 't':
conftest.c:5: error: 'rb_thread_call_without_gvl' undeclared (first use in this function)
conftest.c:5: error: (Each undeclared identifier is reported only once
conftest.c:5: error: for each function it appears in.)
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: /*top*/
4: int main() {return 0;}
5: int t() { void ((*volatile p)()); p = (void ((*)()))rb_thread_call_without_gvl; return 0; }
/* end */

"/Users/davidnghiem/local/bin/gcc -o conftest -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/x86_64-darwin12.2.1 -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/ruby/backward -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1 -I. -I/Users/davidnghiem/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE  -I/Users/davidnghiem/local/include -I/Users/davidnghiem/local/include -I/Users/davidnghiem/.yarvm/.rvm/usr/include -O2 -arch x86_64 -pipe -I/Users/davidnghiem/local/lib/libffi-3.0.11/include   conftest.c  -L. -L/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib -L. -L/Users/davidnghiem/local/lib -L/usr/local/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib  -L/Users/davidnghiem/local/lib    -lffi  -lffi   -lruby-static -lffi  -lffi   -lpthread -ldl -lobjc "
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: /*top*/
4: int main() {return 0;}
5: int t() { rb_thread_call_without_gvl(); return 0; }
/* end */

--------------------

have_func: checking for ffi_prep_cif_var()... -------------------- yes

"/Users/davidnghiem/local/bin/gcc -o conftest -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/x86_64-darwin12.2.1 -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/ruby/backward -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1 -I. -I/Users/davidnghiem/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE  -I/Users/davidnghiem/local/include -I/Users/davidnghiem/local/include -I/Users/davidnghiem/.yarvm/.rvm/usr/include -O2 -arch x86_64 -pipe -I/Users/davidnghiem/local/lib/libffi-3.0.11/include   conftest.c  -L. -L/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib -L. -L/Users/davidnghiem/local/lib -L/usr/local/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib  -L/Users/davidnghiem/local/lib    -lffi  -lffi   -lruby-static -lffi  -lffi   -lpthread -ldl -lobjc "
conftest.c: In function 't':
conftest.c:5: error: 'ffi_prep_cif_var' undeclared (first use in this function)
conftest.c:5: error: (Each undeclared identifier is reported only once
conftest.c:5: error: for each function it appears in.)
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: /*top*/
4: int main() {return 0;}
5: int t() { void ((*volatile p)()); p = (void ((*)()))ffi_prep_cif_var; return 0; }
/* end */

"/Users/davidnghiem/local/bin/gcc -o conftest -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/x86_64-darwin12.2.1 -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1/ruby/backward -I/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/include/ruby-1.9.1 -I. -I/Users/davidnghiem/local/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE  -I/Users/davidnghiem/local/include -I/Users/davidnghiem/local/include -I/Users/davidnghiem/.yarvm/.rvm/usr/include -O2 -arch x86_64 -pipe -I/Users/davidnghiem/local/lib/libffi-3.0.11/include   conftest.c  -L. -L/Users/davidnghiem/.yarvm/.rvm/rubies/ruby-1.9.3-p392/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib -L. -L/Users/davidnghiem/local/lib -L/usr/local/lib -L/Users/davidnghiem/local/lib -L/Users/davidnghiem/.yarvm/.rvm/usr/lib  -L/Users/davidnghiem/local/lib    -lffi  -lffi   -lruby-static -lffi  -lffi   -lpthread -ldl -lobjc "
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: /*top*/
4: int main() {return 0;}
5: int t() { ffi_prep_cif_var(); return 0; }
/* end */

--------------------

extconf.h is:
/* begin */
 1: #ifndef EXTCONF_H
 2: #define EXTCONF_H
 3: #define HAVE_FFI_PREP_CLOSURE 1
 4: #define HAVE_FFI_RAW_CALL 1
 5: #define HAVE_FFI_PREP_RAW_CLOSURE 1
 6: #define HAVE_RAW_API 1
 7: #define HAVE_RB_THREAD_BLOCKING_REGION 1
 8: #define HAVE_RB_THREAD_CALL_WITH_GVL 1
 9: #define HAVE_RB_THREAD_CALL_WITHOUT_GVL 1
10: #define HAVE_FFI_PREP_CIF_VAR 1
11: #define RUBY_1_9 1
12: #endif
/* end */