Sindbad~EG File Manager

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 -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches   -m64 -mtune=generic conftest.c  -L. -L/opt/alt/ruby20/lib64 -Wl,-R/opt/alt/ruby20/lib64 -L. -Wl,-z,relro -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 -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches   -m64 -mtune=generic conftest.c  -L. -L/opt/alt/ruby20/lib64 -Wl,-R/opt/alt/ruby20/lib64 -L. -Wl,-z,relro -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)
 int t(void) { void ((*volatile p)()); p = (void ((*)()))main; return 0; }
                                                         ^~~~
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 -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches   -m64 -mtune=generic conftest.c  -L. -L/opt/alt/ruby20/lib64 -Wl,-R/opt/alt/ruby20/lib64 -L. -Wl,-z,relro -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' [-Wimplicit-function-declaration]
 int t(void) { main(); return 0; }
               ^~~~
/opt/rh/devtoolset-6/root/usr/libexec/gcc/x86_64-redhat-linux/6.3.1/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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