diff --git a/Makefile b/Makefile
index c62fee2..49b0e98 100644
--- a/Makefile
+++ b/Makefile
@@ -49,8 +49,8 @@ unixpath = $(subst \,/,$1)
 unixcygpath = /$(subst :,,$(call unixpath,$1))
 
 ifneq (,$(findstring unix,$(platform)))
-    AR = ${CC_PREFIX}ar
-    CC = ${CC_PREFIX}gcc
+    AR ?= ${CC_PREFIX}ar
+    CC ?= ${CC_PREFIX}gcc
 
     TARGET := $(TARGET_NAME)_libretro.so
     fpic := -fPIC
@@ -138,8 +138,8 @@ else ifeq ($(platform), classic_armv7_a7)
 
 # ARM
 else ifneq (,$(findstring armv,$(platform)))
-    AR = ${CC_PREFIX}ar
-    CC = ${CC_PREFIX}gcc
+    AR ?= ${CC_PREFIX}ar
+    CC ?= ${CC_PREFIX}gcc
 
     TARGET := $(TARGET_NAME)_libretro.so
     fpic := -fPIC
@@ -181,9 +181,9 @@ ifeq ($(IOSSDK),)
    IOSSDK := $(shell xcodebuild -version -sdk iphoneos Path)
 endif
 ifeq ($(platform),ios-arm64)
-   CC = cc -arch arm64 -isysroot $(IOSSDK) -stdlib=libc++
+   CC ?= cc -arch arm64 -isysroot $(IOSSDK) -stdlib=libc++
 else
-   CC = cc -arch armv7 -isysroot $(IOSSDK)
+   CC ?= cc -arch armv7 -isysroot $(IOSSDK)
 endif
 ifeq ($(platform),$(filter $(platform),ios9 ios-arm64))
    MINVERSION = -miphoneos-version-min=8.0
@@ -216,18 +216,18 @@ else ifeq ($(platform), qnx)
    TARGET := $(TARGET_NAME)_libretro_$(platform).so
    fpic := -fPIC
    SHARED := -shared -Wl,--no-undefined -Wl,--version-script=link.T
-   CC = qcc -Vgcc_ntoarmv7le
+   CC ?= qcc -Vgcc_ntoarmv7le
 else ifeq ($(platform), ps3)
    TARGET := $(TARGET_NAME)_libretro_$(platform).a
-   CC = $(CELL_SDK)/host-win32/ppu/bin/ppu-lv2-gcc.exe
-   AR = $(CELL_SDK)/host-win32/ppu/bin/ppu-lv2-ar.exe
+   CC ?= $(CELL_SDK)/host-win32/ppu/bin/ppu-lv2-gcc.exe
+   AR ?= $(CELL_SDK)/host-win32/ppu/bin/ppu-lv2-ar.exe
    STATIC_LINKING = 1
    FLAGS += -DMSB_FIRST -D__CELLOS_LV2__
    OLD_GCC = 1
 else ifeq ($(platform), sncps3)
    TARGET := $(TARGET_NAME)_libretro_ps3.a
-   CC = $(CELL_SDK)/host-win32/sn/bin/ps3ppusnc.exe
-   AR = $(CELL_SDK)/host-win32/sn/bin/ps3snarl.exe
+   CC ?= $(CELL_SDK)/host-win32/sn/bin/ps3ppusnc.exe
+   AR ?= $(CELL_SDK)/host-win32/sn/bin/ps3snarl.exe
    STATIC_LINKING = 1
    FLAGS += -DMSB_FIRST
    NO_GCC = 1
@@ -235,25 +235,25 @@ else ifeq ($(platform), sncps3)
 # PSP1
 else ifeq ($(platform), psp1)
    TARGET := $(TARGET_NAME)_libretro_$(platform).a
-   CC = psp-gcc$(EXE_EXT)
-   AR = psp-ar$(EXE_EXT)
+   CC ?= psp-gcc$(EXE_EXT)
+   AR ?= psp-ar$(EXE_EXT)
    STATIC_LINKING = 1
    FLAGS += -G0
 
 # Vita
 else ifeq ($(platform), vita)
    TARGET := $(TARGET_NAME)_libretro_$(platform).a
-   CC = arm-vita-eabi-gcc$(EXE_EXT)
-   AR = arm-vita-eabi-ar$(EXE_EXT)
+   CC ?= arm-vita-eabi-gcc$(EXE_EXT)
+   AR ?= arm-vita-eabi-ar$(EXE_EXT)
    STATIC_LINKING = 1
    FLAGS += -DVITA
 
 # CTR (3DS)
 else ifeq ($(platform), ctr)
    TARGET := $(TARGET_NAME)_libretro_$(platform).a
-   CC = $(DEVKITARM)/bin/arm-none-eabi-gcc$(EXE_EXT)
-   CXX = $(DEVKITARM)/bin/arm-none-eabi-g++$(EXE_EXT)
-   AR = $(DEVKITARM)/bin/arm-none-eabi-ar$(EXE_EXT)
+   CC ?= $(DEVKITARM)/bin/arm-none-eabi-gcc$(EXE_EXT)
+   CXX ?=$(DEVKITARM)/bin/arm-none-eabi-g++$(EXE_EXT)
+   AR ?= $(DEVKITARM)/bin/arm-none-eabi-ar$(EXE_EXT)
    FLAGS += -march=armv6k -mtune=mpcore -mfloat-abi=hard
    FLAGS += -Wall -mword-relocations
    FLAGS += -fomit-frame-pointer -ffast-math
@@ -311,8 +311,8 @@ else ifeq ($(platform), emscripten)
 # Windows MSVC 2003 Xbox 1
 else ifeq ($(platform), xbox1_msvc2003)
 TARGET := $(TARGET_NAME)_libretro_xdk1.lib
-CC = CL.exe
-LD = lib.exe
+CC ?= CL.exe
+LD ?= lib.exe
 
 export INCLUDE := $(XDK)/xbox/include
 export LIB := $(XDK)/xbox/lib
@@ -325,8 +325,8 @@ HAS_GCC := 0
 else ifeq ($(platform), xbox360_msvc2010)
 TARGET := $(TARGET_NAME)_libretro_xdk360.lib
 MSVCBINDIRPREFIX = $(XEDK)/bin/win32
-CC = "$(MSVCBINDIRPREFIX)/cl.exe"
-LD = "$(MSVCBINDIRPREFIX)/lib.exe"
+CC ?= "$(MSVCBINDIRPREFIX)/cl.exe"
+LD ?= "$(MSVCBINDIRPREFIX)/lib.exe"
 
 export INCLUDE := $(XEDK)/include/xbox
 export LIB := $(XEDK)/lib/xbox
@@ -461,9 +461,9 @@ else ifneq (,$(findstring windows_msvc2017,$(platform)))
 
 	TargetArchMoniker = $(subst $(WinPartition)_,,$(PlatformSuffix))
 
-	CC  = cl.exe
-	CXX = cl.exe
-	LD = link.exe
+	CC  ?= cl.exe
+	CXX ?= cl.exe
+	LD ?= link.exe
 
 	reg_query = $(call filter_out2,$(subst $2,,$(shell reg query "$2" -v "$1" 2>nul)))
 	fix_path = $(subst $(SPACE),\ ,$(subst \,/,$1))
@@ -617,7 +617,7 @@ ifeq ($(STATIC_LINKING),1)
 	LD ?= lib.exe
 	STATIC_LINKING=0
 else
-	LD = link.exe
+	LD ?= link.exe
 endif
 else
 	LD = $(CC)