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#
## Cross-compile env for Android
# Requires Android NDK >= r8
# Requires the following env variables:
#
#    NDK_BASE         -  path to your NDK's root directory
#                        e.g., /home/user/android-ndk
#    OPENSSL_ANDROID  -  path to NDK built openssl
#                        e.g., /home/user/src/openssl-android
#

# Android NDK setup
NDK_COMPILER_VERSION=4.6
NDK_ABI=arm
NDK_BASE ?=  /usr/local/android-ndk
#platform level >= 8 required for dladdr()
NDK_PLATFORM_LEVEL ?= 8
NDK_SYSROOT=$(NDK_BASE)/platforms/android-$(NDK_PLATFORM_LEVEL)/arch-arm
NDK_UNAME=`uname -s | tr '[A-Z]' '[a-z]'`
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
NDK_UNAME := `uname -s | tr '[A-Z]' '[a-z]'`
HOST := arm-linux-androideabi

LOCAL_LDFLAGS   = -L$(OPENSSL_ANDROID)/obj/local/armeabi/ -ldl -lcrypto -lssl -lz
LOCAL_LDFLAGS += -L$(NDK_TOOLCHAIN)/lib/gcc/arm-linux-androideabi/$($NDK_COMPILER_VERSION) -lgcc
CFLAGS = -I$(OPENSSL_ANDROID)/include
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 \

all: $(OPENSSL_ANDROID)/libs/armeabi/libcrypto.so tlsdate-build

$(OPENSSL_ANDROID)/libs/armeabi/libcrypto.so:
	cd $(OPENSSL_ANDROID) && ndk-build -j4

openssl-clean:
	-cd $(OPENSSL_ANDROID) && ndk-build clean

openssl-distclean:
	-cd $(OPENSSL_ANDROID) && ndk-build distclean

configure: configure.ac
	./autogen.sh && \
	CFLAGS="$(CFLAGS)" ./configure \
			CC="$(CC)" \
			AR=$(AR) \
			RANLIB=$(RANLIB) \
			CFLAGS="$(CFLAGS)" \
			--disable-static \
			--disable-languages \
			--disable-dbus \
			--host=$(HOST)
			#--prefix=$(prefix) \
			#--exec-prefix=$(prefix)

tlsdate-build: configure
	make -f Makefile CFLAGS="$(CFLAGS)" LDFLAGS="$(LOCAL_LDFLAGS)"

tlsdate-clean:
	-make -f Makefile clean

tlsdate-distclean:
	-make -f Makefile distclean && rm configure


clean: openssl-clean tlsdate-clean
distclean: openssl-distclean tlsdate-distclean

.PHONY: clean openssl-clean tlsdate-clean