Added Classic Platform structure - ARMv7 Cortex A7 build (#252)

* init commit

* Finished adding Armv7 CortexA7

makefile.libretro

@@ -40,7 +40,9 @@ ifeq ($(platform),)
       EXE_EXT=.exe
    endif
 else ifneq (,$(findstring armv,$(platform)))
-   override platform += unix
+   ifeq (,$(findstring classic_,$(platform)))
+      override platform += unix
+   endif
 else ifneq (,$(findstring rpi,$(platform)))
    override platform += unix
 endif
@@ -254,6 +256,45 @@ else ifeq ($(platform), libnx)
     STATIC_LINKING = 1
 	ENDIANNESS_DEFINES := -DLSB_FIRST
 
+# Classic Platforms ####################
+# Platform affix = classic_<ISA>_<µARCH>
+# Help at https://modmyclassic.com/comp
+
+# (armv7 a7, hard point, neon based) ### 
+# NESC, SNESC, C64 mini 
+else ifeq ($(platform), classic_armv7_a7)
+	TARGET := $(TARGET_NAME)_libretro.so
+	fpic := -fPIC
+	SHARED := -shared -Wl,-no-undefined -Wl,--version-script=$(VERSION_SCRIPT)
+	CFLAGS += -Ofast \
+	-flto=4 -fwhole-program -fuse-linker-plugin \
+	-fdata-sections -ffunction-sections -Wl,--gc-sections \
+	-fno-stack-protector -fno-ident -fomit-frame-pointer \
+	-falign-functions=1 -falign-jumps=1 -falign-loops=1 \
+	-fno-unwind-tables -fno-asynchronous-unwind-tables -fno-unroll-loops \
+	-fmerge-all-constants -fno-math-errno \
+	-marm -mtune=cortex-a7 -mfpu=neon-vfpv4 -mfloat-abi=hard
+	CXXFLAGS += $(CFLAGS)
+	CPPFLAGS += $(CFLAGS)
+	ASFLAGS += $(CFLAGS)
+	CXXFLAGS := -std=gnu++11
+	CFLAGS := -std=gnu11
+	HAVE_NEON = 1
+	ARCH = arm
+	BUILTIN_GPU = neon
+	USE_DYNAREC = 1
+	ENDIANNESS_DEFINES := -DLSB_FIRST
+	ifeq ($(shell echo `$(CC) -dumpversion` "< 4.9" | bc -l), 1)
+	  CFLAGS += -march=armv7-a
+	else
+	  CFLAGS += -march=armv7ve
+	  # If gcc is 5.0 or later
+	  ifeq ($(shell echo `$(CC) -dumpversion` ">= 5" | bc -l), 1)
+	    LDFLAGS += -static-libgcc -static-libstdc++
+	  endif
+	endif
+#######################################
+
 # Nintendo Game Cube / Wii / WiiU
 else ifneq (,$(filter $(platform), ngc wii wiiu))
    TARGET := $(TARGET_NAME)_libretro_$(platform).a
@@ -587,11 +628,13 @@ endif
 	$(CC) $(CFLAGS) $(INCFLAGS) -c $< -o $@
 
 $(TARGET): $(OBJS)
+	@echo "** BUILDING $(TARGET) FOR PLATFORM $(platform) **"
 ifeq ($(STATIC_LINKING), 1)
 	$(AR) rcs $@ $(OBJS)
 else
 	$(LD) $(LINKOUT)$@ $(SHARED) $^ $(LDFLAGS) $(LIBS)
 endif
+	@echo "** BUILD SUCCESSFUL! GG NO RE **"
 
 clean-objs:
 	rm -f $(OBJS)