add basic libretro file wip

jni/Android.mk

@@ -0,0 +1,29 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE    := retro
+
+ifeq ($(TARGET_ARCH),arm)
+LOCAL_CFLAGS += -DANDROID_ARM
+LOCAL_ARM_MODE := arm
+endif
+
+ifeq ($(TARGET_ARCH),x86)
+LOCAL_CFLAGS +=  -DANDROID_X86
+endif
+
+ifeq ($(TARGET_ARCH),mips)
+LOCAL_CFLAGS += -DANDROID_MIPS -D__mips__ -D__MIPSEL__
+endif
+
+CORE_DIR	= ..
+
+include $(CORE_DIR)/Makefile.common
+
+LOCAL_SRC_FILES    += $(SOURCES_C)
+LOCAL_CFLAGS += -O2 -D__LIBRETRO__ -DFRONTEND_SUPPORTS_RGB565 -DNDEBUG=1 $(INCFLAGS)
+
+LOCAL_LDLIBS += -lz
+
+include $(BUILD_SHARED_LIBRARY)

jni/Application.mk

@@ -0,0 +1 @@
+APP_ABI := all