Makefile.android

# Please install the following prerequisites (instructions for each follows):
# 	Android OS SDK: http://source.android.com/download
#
# Install and prepare the Android OS SDK ( http://source.android.com/download )
# on Debian or Ubuntu

### these modify the calling shell
# point pkg-config to the .pc files generated from these builds
export PKG_CONFIG_PATH=$(LOCAL)/lib/pkgconfig
# workaround for cross-compiling bug in autoconf
export ac_cv_func_malloc_0_nonnull=yes

CWD = $(shell pwd)
PROJECT_ROOT = $(CWD)/..
EXTERNAL_ROOT = $(PROJECT_ROOT)

# Android NDK setup
NDK_BASE ?= /opt/android-ndk
NDK_PLATFORM_LEVEL ?= 8
NDK_ABI=arm
NDK_SYSROOT=$(NDK_BASE)/platforms/android-$(NDK_PLATFORM_LEVEL)/arch-$(NDK_ABI)
NDK_UNAME=`uname -s | tr '[A-Z]' '[a-z]'`
#NDK_COMPILER_VERSION=4.4.3
NDK_COMPILER_VERSION=4.6
NDK_TOOLCHAIN=$(NDK_BASE)/toolchains/$(NDK_ABI)-linux-androideabi-$(NDK_COMPILER_VERSION)/prebuilt/$(NDK_UNAME)-x86

# to use the real HOST tag, you need the latest libtool files:
# http://stackoverflow.com/questions/4594736/configure-does-not-recognize-androideabi
HOST := $(NDK_ABI)-linux-androideabi

# install root for built files
DESTDIR = $(EXTERNAL_ROOT)
# TODO try adding the Android-style /data/app.name here
prefix = 
LOCAL := $(DESTDIR)$(prefix)

PATH := ${PATH}:$(NDK_TOOLCHAIN)/bin:$(LOCAL)/bin

CC := '$(NDK_TOOLCHAIN)/bin/arm-linux-androideabi-gcc --sysroot=$(NDK_SYSROOT)'
CXX := $(NDK_TOOLCHAIN)/bin/arm-linux-androideabi-g++
CPP := $(NDK_TOOLCHAIN)/bin/arm-linux-androideabi-cpp
LD := $(NDK_TOOLCHAIN)/bin/arm-linux-androideabi-ld
AR := $(NDK_TOOLCHAIN)/bin/arm-linux-androideabi-ar
RANLIB := $(NDK_TOOLCHAIN)/bin/arm-linux-androideabi-ranlib
STRIP := $(NDK_TOOLCHAIN)/bin/arm-linux-androideabi-strip \
	--strip-unneeded -R .note -R .comment

CFLAGS = -DANDROID
LDFLAGS = -L$(NDK_SYSROOT)/usr/lib -L$(LOCAL)/lib

# turn off gcc optmization on the native builds for now, to aid debugging

# build as small as possible, mostly useful for static binaries
#CFLAGS += -fdata-sections -ffunction-sections -Os
#LDFLAGS += -Wl,--gc-sections
# unoptimized debug builds!
CFLAGS += -g


all:
	./configure \
		CFLAGS='$(CFLAGS)' \
		SYSROOT=$(NDK_SYSROOT) \
		--host=$(HOST) && \
		$(MAKE) CC=$(CC) \
		CXX=$(CXX) \
		CFLAGS='$(CFLAGS)'