##############
# Works on hosts Linux, Windows and Darwin
# Download the Android NDK, unpack somewhere, and set NDK_ROOT_DIR to it

#########################
# Check the host platform

HOST_PLATFORM = linux
ifeq ($(shell uname -a),)
  HOST_PLATFORM = windows
else ifneq ($(findstring MINGW,$(shell uname -a)),)
  HOST_PLATFORM = windows
else ifneq ($(findstring Darwin,$(shell uname -a)),)
  HOST_PLATFORM = darwin
else ifneq ($(findstring win,$(shell uname -a)),)
  HOST_PLATFORM = windows
endif

#########################
# Set the target platform

TARGET_PLATFORM = android_x86

#################
# Toolchain setup

CC  = $(NDK_ROOT_DIR)/toolchains/x86-$(NDK_TOOLCHAIN_VERSION)/prebuilt/$(HOST_PLATFORM)-x86_64/bin/i686-linux-android-gcc
CXX = $(NDK_ROOT_DIR)/toolchains/x86-$(NDK_TOOLCHAIN_VERSION)/prebuilt/$(HOST_PLATFORM)-x86_64/bin/i686-linux-android-g++
AS  = $(NDK_ROOT_DIR)/toolchains/x86-$(NDK_TOOLCHAIN_VERSION)/prebuilt/$(HOST_PLATFORM)-x86_64/bin/i686-linux-android-as
AR  = $(NDK_ROOT_DIR)/toolchains/x86-$(NDK_TOOLCHAIN_VERSION)/prebuilt/$(HOST_PLATFORM)-x86_64/bin/i686-linux-android-ar

############
# Extensions

OBJEXT = .android_x86.o
SOEXT  = .android_x86.so
LIBEXT = .android_x86.a

################
# Platform setup

STATIC_LINKING = 0
platform       = android
PLATDEFS       = -DANDROID -DINLINE=inline -DHAVE_STDINT_H -DBSPF_UNIX -DHAVE_INTTYPES -DLSB_FIRST
PLATCFLAGS     = -ffunction-sections -funwind-tables -no-canonical-prefixes -fstack-protector -fomit-frame-pointer -fstrict-aliasing -funswitch-loops -finline-limit=300 -Wa,--noexecstack -Wformat -Werror=format-security
PLATCXXFLAGS   = -ffunction-sections -funwind-tables -no-canonical-prefixes -fstack-protector -fomit-frame-pointer -fstrict-aliasing -funswitch-loops -finline-limit=300 -Wa,--noexecstack -Wformat -Werror=format-security -fno-exceptions -fno-rtti
PLATLDFLAGS    = -shared --sysroot=$(NDK_ROOT_DIR)/platforms/android-9/arch-x86 -lgcc -no-canonical-prefixes -Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -lc -lm
PLATLDXFLAGS   = -shared --sysroot=$(NDK_ROOT_DIR)/platforms/android-9/arch-x86 -lgcc -no-canonical-prefixes -Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -lc -lm $(NDK_ROOT_DIR)/sources/cxx-stl/gnu-libstdc++/$(NDK_TOOLCHAIN_VERSION)/libs/x86/libgnustl_static.a

################
# libretro setup

RETRODEFS     = -D__LIBRETRO__
RETROCFLAGS   =
RETROCXXFLAGS =
RETROLDFLAGS  =
RETROLDXFLAGS =

#################
# Final variables

DEFINES  = $(PLATDEFS) $(RETRODEFS)
CFLAGS   = $(PLATCFLAGS) $(RETROCFLAGS) $(DEFINES) $(INCLUDES)
CXXFLAGS = $(PLATCXXFLAGS) $(RETROCXXFLAGS) $(DEFINES) $(INCLUDES)
LDFLAGS  = $(PLATLDFLAGS) $(RETROLDFLAGS)
LDXFLAGS = $(PLATLDXFLAGS) $(RETROLDXFLAGS)

########
# Tuning

ifneq ($(DEBUG),)
  CFLAGS   += -O0 -g
  CXXFLAGS += -O0 -g
else
  CFLAGS   += -O3 -DNDEBUG
  CXXFLAGS += -O3 -DNDEBUG
endif

ifneq ($(LOG_PERFORMANCE),)
  CFLAGS   += -DLOG_PERFORMANCE
  CXXFLAGS += -DLOG_PERFORMANCE
endif

####################################
# Variable setup for Makefile.common

CORE_DIR  ?= ..
BUILD_DIR ?= .
INCLUDES   = -I$(NDK_ROOT_DIR)/platforms/android-9/arch-x86/usr/include -I$(NDK_ROOT_DIR)/sources/cxx-stl/gnu-libstdc++/$(NDK_TOOLCHAIN_VERSION)/include -I$(NDK_ROOT_DIR)/sources/cxx-stl/gnu-libstdc++/$(NDK_TOOLCHAIN_VERSION)/libs/x86/include -I$(NDK_ROOT_DIR)/sources/cxx-stl/gnu-libstdc++/$(NDK_TOOLCHAIN_VERSION)/include/backward

include $(BUILD_DIR)/Makefile.common

###############
# Include rules

include $(BUILD_DIR)/Makefile.rules