README.MSWIN

Additional notes for compiling for MS Windows
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Compile with MinGW-W64

Compile Mednafen and libraries(especially zlib) with additional CPPFLAG(might not be needed in the future?): -D_LFS64_LARGEFILE=1

Compile libraries with callbacks(but not Mednafen itself for performance reasons) with extra flag(CPPFLAG): -mstackrealign

To match official builds(As of Dec 18, 2014), compile Mednafen with:
	32-bit: -O2 -fomit-frame-pointer -march=i586 -mtune=pentium3
	64-bit: -O2 -fomit-frame-pointer -mtune=amdfam10

Patch zlib zconf.h after running configure, but before make'ing, as follows:
@@ -481,7 +481,7 @@ typedef uLong FAR uLongf;
 #  define z_off_t long
 #endif
 
-#if !defined(_WIN32) && defined(Z_LARGE64)
+#if defined(Z_LARGE64)
 #  define z_off64_t off64_t
 #else
 #  if defined(_WIN32) && !defined(__GNUC__) && !defined(Z_SOLO)