MSVC: <strings.h> does not exist in Windows

[kolomenkin]

There is no <strings.h> in Windows.

Only two functions are needed by gumbo parser from <strings.h>:

• strcasecmp
• strncasecmp

_stricmp from <string.h> completely does the same as strcasecmp
_strnicmp from <string.h> completely does the same as strncasecmp

Here is my solution for Windows:

#if defined(_WIN32) || defined(_WIN64) 
#  include <string.h>
#  define strcasecmp _stricmp 
#  define strncasecmp _strnicmp 
#else
#  include <strings.h>
#endif

[crazydef]

This solution doesn't work because compilers on Linux don't handle directory paths the same way as Visual Studio does. They always search user paths before system paths, and so the #include <strings.h> results in a circular include that never exits.

[kolomenkin]

We could have file like local_strings.h with the code from my proposal.
And update Gumbo parser to include "local_strings.h" instead of <strings.h>

It will avoid the problem with include recursion.