package configuration for openssl
cflags: -IC:/msys/1.0/local/include  

ldflags: -LC:/msys/1.0/local/lib
libs: -lssl -lcrypto  


"gcc -o conftest -Ic:/ruby64/include/ruby-1.9.1/x64-mingw32 -Ic:/ruby64/include/ruby-1.9.1/ruby/backward -Ic:/ruby64/include/ruby-1.9.1 -I. -I./..  -D_FILE_OFFSET_BITS=64  -O2 -finline-functions -I/usr/local/include -D__USE_MINGW_ANSI_STDIO -IC:/msys/1.0/local/include  
 conftest.c  -L. -Lc:/ruby64/lib -L. -L/usr/local/lib -LC:/msys/1.0/local/lib     -lssl -lcrypto  
 -lx64-msvcrt-ruby191  -lshell32 -lws2_32 -limagehlp  "
gcc: fatal error: no input files
compilation terminated.
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <winsock2.h>
4: #include <windows.h>
5: int main() {return 0;}
/* end */