have_library: checking for main() in -lCGAL... -------------------- yes

"x86_64-pc-linux-gnu-gcc -o conftest -I/usr/include/ruby-2.0.0/x86_64-linux -I/usr/include/ruby-2.0.0/ruby/backward -I/usr/include/ruby-2.0.0 -I.    -march=native -msse3 -O2 -floop-interchange -floop-strip-mine -floop-block -pipe -fno-strict-aliasing -fPIC conftest.c  -L. -L/usr/lib64 -L. -Wl,-O1 -Wl,--as-needed -fstack-protector -rdynamic -Wl,-export-dynamic -Wl,--no-undefined     -lruby20  -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 */

"x86_64-pc-linux-gnu-gcc -o conftest -I/usr/include/ruby-2.0.0/x86_64-linux -I/usr/include/ruby-2.0.0/ruby/backward -I/usr/include/ruby-2.0.0 -I.    -march=native -msse3 -O2 -floop-interchange -floop-strip-mine -floop-block -pipe -fno-strict-aliasing -fPIC conftest.c  -L. -L/usr/lib64 -L. -Wl,-O1 -Wl,--as-needed -fstack-protector -rdynamic -Wl,-export-dynamic -Wl,--no-undefined     -lruby20 -lCGAL  -lpthread -lrt -ldl -lcrypt -lm   -lc"
conftest.c: In function ‘t’:
conftest.c:5:57: error: ‘main’ undeclared (first use in this function)
conftest.c:5:57: note: each undeclared identifier is reported only once for each function it appears in
checked program was:
/* begin */
 1: #include "ruby.h"
 2: 
 3: /*top*/
 4: extern int t(void);
 5: int t(void) { void ((*volatile p)()); p = (void ((*)()))main; return 0; }
 6: int main(int argc, char **argv)
 7: {
 8:   if (argc > 1000000) {
 9:     printf("%p", &t);
10:   }
11: 
12:   return 0;
13: }
/* end */

"x86_64-pc-linux-gnu-gcc -o conftest -I/usr/include/ruby-2.0.0/x86_64-linux -I/usr/include/ruby-2.0.0/ruby/backward -I/usr/include/ruby-2.0.0 -I.    -march=native -msse3 -O2 -floop-interchange -floop-strip-mine -floop-block -pipe -fno-strict-aliasing -fPIC conftest.c  -L. -L/usr/lib64 -L. -Wl,-O1 -Wl,--as-needed -fstack-protector -rdynamic -Wl,-export-dynamic -Wl,--no-undefined     -lruby20 -lCGAL  -lpthread -lrt -ldl -lcrypt -lm   -lc"
checked program was:
/* begin */
 1: #include "ruby.h"
 2: 
 3: /*top*/
 4: extern int t(void);
 5: int t(void) { main(); return 0; }
 6: int main(int argc, char **argv)
 7: {
 8:   if (argc > 1000000) {
 9:     printf("%p", &t);
10:   }
11: 
12:   return 0;
13: }
/* end */

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

have_library: checking for main() in -lCGAL_Core... -------------------- yes

"x86_64-pc-linux-gnu-gcc -o conftest -I/usr/include/ruby-2.0.0/x86_64-linux -I/usr/include/ruby-2.0.0/ruby/backward -I/usr/include/ruby-2.0.0 -I.    -march=native -msse3 -O2 -floop-interchange -floop-strip-mine -floop-block -pipe -fno-strict-aliasing -fPIC conftest.c  -L. -L/usr/lib64 -L. -Wl,-O1 -Wl,--as-needed -fstack-protector -rdynamic -Wl,-export-dynamic -Wl,--no-undefined    -lCGAL  -lruby20 -lCGAL_Core -lCGAL  -lpthread -lrt -ldl -lcrypt -lm   -lc"
conftest.c: In function ‘t’:
conftest.c:5:57: error: ‘main’ undeclared (first use in this function)
conftest.c:5:57: note: each undeclared identifier is reported only once for each function it appears in
checked program was:
/* begin */
 1: #include "ruby.h"
 2: 
 3: /*top*/
 4: extern int t(void);
 5: int t(void) { void ((*volatile p)()); p = (void ((*)()))main; return 0; }
 6: int main(int argc, char **argv)
 7: {
 8:   if (argc > 1000000) {
 9:     printf("%p", &t);
10:   }
11: 
12:   return 0;
13: }
/* end */

"x86_64-pc-linux-gnu-gcc -o conftest -I/usr/include/ruby-2.0.0/x86_64-linux -I/usr/include/ruby-2.0.0/ruby/backward -I/usr/include/ruby-2.0.0 -I.    -march=native -msse3 -O2 -floop-interchange -floop-strip-mine -floop-block -pipe -fno-strict-aliasing -fPIC conftest.c  -L. -L/usr/lib64 -L. -Wl,-O1 -Wl,--as-needed -fstack-protector -rdynamic -Wl,-export-dynamic -Wl,--no-undefined    -lCGAL  -lruby20 -lCGAL_Core -lCGAL  -lpthread -lrt -ldl -lcrypt -lm   -lc"
checked program was:
/* begin */
 1: #include "ruby.h"
 2: 
 3: /*top*/
 4: extern int t(void);
 5: int t(void) { main(); return 0; }
 6: int main(int argc, char **argv)
 7: {
 8:   if (argc > 1000000) {
 9:     printf("%p", &t);
10:   }
11: 
12:   return 0;
13: }
/* end */

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

have_library: checking for main() in -lgmp... -------------------- yes

"x86_64-pc-linux-gnu-gcc -o conftest -I/usr/include/ruby-2.0.0/x86_64-linux -I/usr/include/ruby-2.0.0/ruby/backward -I/usr/include/ruby-2.0.0 -I.    -march=native -msse3 -O2 -floop-interchange -floop-strip-mine -floop-block -pipe -fno-strict-aliasing -fPIC conftest.c  -L. -L/usr/lib64 -L. -Wl,-O1 -Wl,--as-needed -fstack-protector -rdynamic -Wl,-export-dynamic -Wl,--no-undefined    -lCGAL_Core -lCGAL  -lruby20 -lgmp -lCGAL_Core -lCGAL  -lpthread -lrt -ldl -lcrypt -lm   -lc"
conftest.c: In function ‘t’:
conftest.c:5:57: error: ‘main’ undeclared (first use in this function)
conftest.c:5:57: note: each undeclared identifier is reported only once for each function it appears in
checked program was:
/* begin */
 1: #include "ruby.h"
 2: 
 3: /*top*/
 4: extern int t(void);
 5: int t(void) { void ((*volatile p)()); p = (void ((*)()))main; return 0; }
 6: int main(int argc, char **argv)
 7: {
 8:   if (argc > 1000000) {
 9:     printf("%p", &t);
10:   }
11: 
12:   return 0;
13: }
/* end */

"x86_64-pc-linux-gnu-gcc -o conftest -I/usr/include/ruby-2.0.0/x86_64-linux -I/usr/include/ruby-2.0.0/ruby/backward -I/usr/include/ruby-2.0.0 -I.    -march=native -msse3 -O2 -floop-interchange -floop-strip-mine -floop-block -pipe -fno-strict-aliasing -fPIC conftest.c  -L. -L/usr/lib64 -L. -Wl,-O1 -Wl,--as-needed -fstack-protector -rdynamic -Wl,-export-dynamic -Wl,--no-undefined    -lCGAL_Core -lCGAL  -lruby20 -lgmp -lCGAL_Core -lCGAL  -lpthread -lrt -ldl -lcrypt -lm   -lc"
checked program was:
/* begin */
 1: #include "ruby.h"
 2: 
 3: /*top*/
 4: extern int t(void);
 5: int t(void) { main(); return 0; }
 6: int main(int argc, char **argv)
 7: {
 8:   if (argc > 1000000) {
 9:     printf("%p", &t);
10:   }
11: 
12:   return 0;
13: }
/* end */

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