Use this to help purge the world of tempnam such as in FBX -- yes I tweeted this a while back

tempnam-replace.c

 
  extern "C" {
		// '-Wl,-wrap,tempnam'
		char *__wrap_tempnam( const char *dir, const char *pfx )
		{
			// You'll have to rewrite this part for your filesystem layer.
			static unsigned int i = 0;
			const unsigned int len = 512;
			char path[ len ];
			KaFilePathToCachePathf( path, len, "%s%s-%d.tmp", 
				( dir != nullptr ) ? dir : "",
				( pfx != nullptr ) ? pfx : "", i++ );

			KaLogTagf( KaFbxImporter, ">>> %s\n", path );

			char *s =  (char*)malloc( len );
			strncpy( s, path, len );

			return s;
		}
	}