have_func: checking for rb_enc_raise() in ruby.h... -------------------- yes "gcc -o conftest -I/opt/chefdk/embedded/include/ruby-2.3.0/x86_64-linux -I/opt/chefdk/embedded/include/ruby-2.3.0/ruby/backward -I/opt/chefdk/embedded/include/ruby-2.3.0 -I. -I/opt/chefdk/embedded/include -O2 -O3 -g -pipe -I/opt/chefdk/embedded/include -I/opt/chefdk/embedded/include -O2 -O3 -g -pipe -fPIC conftest.c -L. -L/opt/chefdk/embedded/lib -Wl,-R/opt/chefdk/embedded/lib -L/opt/chefdk/embedded/lib -Wl,-R/opt/chefdk/embedded/lib -L. -Wl,-rpath,/opt/chefdk/embedded/lib -fstack-protector -L/opt/chefdk/embedded/lib -rdynamic -Wl,-export-dynamic -L/opt/chefdk/embedded/lib -Wl,-R/opt/chefdk/embedded/lib -Wl,-R/opt/chefdk/embedded/lib -L/opt/chefdk/embedded/lib -lruby -lpthread -lrt -ldl -lcrypt -lm -lc" checked program was: /* begin */ 1: #include "ruby.h" 2: 3: int main(int argc, char **argv) 4: { 5: return 0; 6: } /* end */ "gcc -o conftest -I/opt/chefdk/embedded/include/ruby-2.3.0/x86_64-linux -I/opt/chefdk/embedded/include/ruby-2.3.0/ruby/backward -I/opt/chefdk/embedded/include/ruby-2.3.0 -I. -I/opt/chefdk/embedded/include -O2 -O3 -g -pipe -I/opt/chefdk/embedded/include -I/opt/chefdk/embedded/include -O2 -O3 -g -pipe -fPIC conftest.c -L. -L/opt/chefdk/embedded/lib -Wl,-R/opt/chefdk/embedded/lib -L/opt/chefdk/embedded/lib -Wl,-R/opt/chefdk/embedded/lib -L. -Wl,-rpath,/opt/chefdk/embedded/lib -fstack-protector -L/opt/chefdk/embedded/lib -rdynamic -Wl,-export-dynamic -L/opt/chefdk/embedded/lib -Wl,-R/opt/chefdk/embedded/lib -Wl,-R/opt/chefdk/embedded/lib -L/opt/chefdk/embedded/lib -lruby -lpthread -lrt -ldl -lcrypt -lm -lc" conftest.c: In function ‘t’: conftest.c:15:57: error: ‘rb_enc_raise’ undeclared (first use in this function) int t(void) { void ((*volatile p)()); p = (void ((*)()))rb_enc_raise; return !p; } ^ conftest.c:15:57: note: each undeclared identifier is reported only once for each function it appears in checked program was: /* begin */ 1: #include "ruby.h" 2: 3: #include 4: 5: /*top*/ 6: extern int t(void); 7: int main(int argc, char **argv) 8: { 9: if (argc > 1000000) { 10: printf("%p", &t); 11: } 12: 13: return 0; 14: } 15: int t(void) { void ((*volatile p)()); p = (void ((*)()))rb_enc_raise; return !p; } /* end */ "gcc -o conftest -I/opt/chefdk/embedded/include/ruby-2.3.0/x86_64-linux -I/opt/chefdk/embedded/include/ruby-2.3.0/ruby/backward -I/opt/chefdk/embedded/include/ruby-2.3.0 -I. -I/opt/chefdk/embedded/include -O2 -O3 -g -pipe -I/opt/chefdk/embedded/include -I/opt/chefdk/embedded/include -O2 -O3 -g -pipe -fPIC conftest.c -L. -L/opt/chefdk/embedded/lib -Wl,-R/opt/chefdk/embedded/lib -L/opt/chefdk/embedded/lib -Wl,-R/opt/chefdk/embedded/lib -L. -Wl,-rpath,/opt/chefdk/embedded/lib -fstack-protector -L/opt/chefdk/embedded/lib -rdynamic -Wl,-export-dynamic -L/opt/chefdk/embedded/lib -Wl,-R/opt/chefdk/embedded/lib -Wl,-R/opt/chefdk/embedded/lib -L/opt/chefdk/embedded/lib -lruby -lpthread -lrt -ldl -lcrypt -lm -lc" checked program was: /* begin */ 1: #include "ruby.h" 2: 3: #include 4: 5: /*top*/ 6: extern int t(void); 7: int main(int argc, char **argv) 8: { 9: if (argc > 1000000) { 10: printf("%p", &t); 11: } 12: 13: return 0; 14: } 15: extern void rb_enc_raise(); 16: int t(void) { rb_enc_raise(); return 0; } /* end */ --------------------