Merge pull request #295 from webgeek1234/master

Fix mingw cross compile and fix wii-u compile on newer devkitpro versions

Makefile.libretro

@@ -279,7 +279,7 @@ else ifeq ($(platform), wiiu)
 	TARGET := $(TARGET_NAME)_libretro_$(platform).a
 	CC = $(DEVKITPPC)/bin/powerpc-eabi-gcc$(EXE_EXT)
 	AR = $(DEVKITPPC)/bin/powerpc-eabi-ar$(EXE_EXT)
-	PLATFORM_DEFINES := -DGEKKO -DHW_RVL -mwup -mcpu=750 -meabi -mhard-float
+	PLATFORM_DEFINES := -DGEKKO -DHW_RVL -mcpu=750 -meabi -mhard-float
 	PLATFORM_DEFINES += -U__INT32_TYPE__ -U __UINT32_TYPE__ -D__INT32_TYPE__=int
 	ENDIANNESS_DEFINES += -DMSB_FIRST
 	STATIC_LINKING=1
@@ -612,7 +612,7 @@ CFLAGS += -D_CRT_SECURE_NO_DEPRECATE
 # Windows
 else
 	TARGET := $(TARGET_NAME)_libretro.dll
-	CC = gcc
+	CC ?= gcc
 	SHARED := -shared -static-libgcc -static-libstdc++ -s -Wl,--version-script=src/drivers/libretro/link.T
    PSS_STYLE :=2
 endif