Re: Autoconf, libpq and replacement function - Mailing list pgsql-hackers

Tom Lane wrote:
> I'd suggest making the callers do something like
> 
>     #ifdef HAVE_FNMATCH
>     #include <fnmatch.h>
>     #else
>     #include "port/pg_fnmatch.h"
>     #endif

The way Autoconf suggests to organize this is to provide a fake 
fnmatch.h (they call it fnmatch_.h) and link it to fnmatch.h if it is 
needed.

This way, callers don't need to know the difference.