Makefile possibly can't build for OSX.

[Wyatt-Stanke]

In this snippet, uname -a is searched for "win", then "Darwin" to determine what OS to go for. But, "win" is contained in Dar"win", so it will always result in building for windows.

beetle-wswan-libretro/Makefile

Lines 23 to 27 in c9b3777

	else ifneq ($(findstring win,$(shell uname -a)),)
	platform = win
	else ifneq ($(findstring Darwin,$(shell uname -a)),)
	platform = osx
	endif