Question

I am using mingw32-make to compile a project to Windows, which depends on a project called libevent2. I keep receiving this error –

util.h:69:25: fatal error: sys/socket.h: No such file or directory

Obviously a file from the Linux API is trying to be included, which won’t work on Windows. Upon further investigation I find however that this file should only be included if WIN32 isn’t defined.

#ifdef WIN32
 #include <winsock2.h>
#else
 #include <sys/socket.h>
#endif

Answer 1

You should use _WIN32 and may also want to check for __CYGWIN__

#if defined _WIN32 || defined __CYGWIN__