have_library: checking for main() in -lsocket... -------------------- no
"gcc -o conftest -I/opt/alt/ruby20/include/ruby-2.0.0/x86_64-linux -I/opt/alt/ruby20/include/ruby-2.0.0/ruby/backward -I/opt/alt/ruby20/include/ruby-2.0.0 -I. -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection conftest.c -L. -L/opt/alt/ruby20/lib64 -Wl,-R/opt/alt/ruby20/lib64 -L. -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -L/opt/alt/openssl/lib64 -L/opt/alt/ruby20/lib64 -Wl,-rpath=/opt/alt/openssl/lib64,-rpath=/opt/alt/ruby20/lib64 -fstack-protector -rdynamic -Wl,-export-dynamic -m64 -Wl,-R -Wl,/opt/alt/ruby20/lib64 -L/opt/alt/ruby20/lib64 -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/alt/ruby20/include/ruby-2.0.0/x86_64-linux -I/opt/alt/ruby20/include/ruby-2.0.0/ruby/backward -I/opt/alt/ruby20/include/ruby-2.0.0 -I. -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection conftest.c -L. -L/opt/alt/ruby20/lib64 -Wl,-R/opt/alt/ruby20/lib64 -L. -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -L/opt/alt/openssl/lib64 -L/opt/alt/ruby20/lib64 -Wl,-rpath=/opt/alt/openssl/lib64,-rpath=/opt/alt/ruby20/lib64 -fstack-protector -rdynamic -Wl,-export-dynamic -m64 -Wl,-R -Wl,/opt/alt/ruby20/lib64 -L/opt/alt/ruby20/lib64 -lruby -lsocket -lpthread -lrt -ldl -lcrypt -lm -lc"
conftest.c: In function 't':
conftest.c:5:57: error: 'main' undeclared (first use in this function); did you mean 'fmin'?
int t(void) { void ((*volatile p)()); p = (void ((*)()))main; return 0; }
^~~~
fmin
conftest.c:5:57: note: each undeclared identifier is reported only once for each function it appears in
conftest.c:5:32: warning: variable 'p' set but not used [-Wunused-but-set-variable]
int t(void) { void ((*volatile p)()); p = (void ((*)()))main; return 0; }
^
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 */
"gcc -o conftest -I/opt/alt/ruby20/include/ruby-2.0.0/x86_64-linux -I/opt/alt/ruby20/include/ruby-2.0.0/ruby/backward -I/opt/alt/ruby20/include/ruby-2.0.0 -I. -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection conftest.c -L. -L/opt/alt/ruby20/lib64 -Wl,-R/opt/alt/ruby20/lib64 -L. -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -L/opt/alt/openssl/lib64 -L/opt/alt/ruby20/lib64 -Wl,-rpath=/opt/alt/openssl/lib64,-rpath=/opt/alt/ruby20/lib64 -fstack-protector -rdynamic -Wl,-export-dynamic -m64 -Wl,-R -Wl,/opt/alt/ruby20/lib64 -L/opt/alt/ruby20/lib64 -lruby -lsocket -lpthread -lrt -ldl -lcrypt -lm -lc"
conftest.c: In function 't':
conftest.c:5:15: warning: implicit declaration of function 'main'; did you mean 'fmin'? [-Wimplicit-function-declaration]
int t(void) { main(); return 0; }
^~~~
fmin
/usr/bin/ld: cannot find -lsocket
collect2: error: ld returned 1 exit status
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 */
--------------------
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