# Copyright 2019, pEp Foundation
# This file is part of pEpJNIAdapter for Android  - [ARCH] build
# This file may be used under the terms of the GNU General Public License version 3
# see LICENSE.txt

include ../Makefile.conf

#------------------------------------------------------------------------------#
# Makefile to build deps for use with pEpEngine
#  based on gnupg-for-android/external/Makefile
#------------------------------------------------------------------------------#

#------------------------------------------------------------------------------#
# Build parameters

APP_ABI ?= [ARCH]
ANDROID_API ?= [ANDROID_API]

all: build

build: showsetup uuid-install sequoia-ffi-install libetpan-build

#------------------------------------------------------------------------------#
# Manage paths for PREFIX, DESTDIR, LOCAL and PATH

EXTERNAL_ROOT := $(shell pwd)

# install root for built files
DESTDIR = $(EXTERNAL_ROOT)/..
prefix = /output/$(APP_ABI)
LOCAL := $(DESTDIR)$(prefix)

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

HOST = [HOST]
NDK_TOOLCHAIN = $([NDK_TOOLCHAIN_TARGET])-$(NDK_TOOLCHAIN_COMPILER)
COMPILER_PREFIX = [COMPILER_PREFIX]

# include Android's build flags
TARGET_ARCH_ABI = $(APP_ABI)
include $(ANDROID_NDK)/build/core/toolchains/$(NDK_TOOLCHAIN)/setup.mk

CC := $(ANDROID_NDK_HOME)/bin/$(COMPILER_PREFIX)$(ANDROID_API)-clang
CXX := $(ANDROID_NDK_HOME)/bin/$(COMPILER_PREFIX)$(ANDROID_API)-clang++
AS := $(CC)

CFLAGS += -DANDROID -I$(LOCAL)/include $(TARGET_CFLAGS) -fPIE -fPIC -std=c99
LDFLAGS += -llog -L$(LOCAL)/lib $(TARGET_LDFLAGS) -pie

# change 'release' to 'debug' for unoptimized debug builds
CFLAGS += $([ARCH_DEBUG_CFLAGS])

#------------------------------------------------------------------------------#
# GNU Tools trickery

# 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

#------------------------------------------------------------------------------#
# debugging stuff

showsetup:
	@echo "NDK_TOOLCHAIN: $(NDK_TOOLCHAIN)"
	@echo "APP_ABI: $(APP_ABI)"
	@echo "HOST: $(HOST)"
	@echo "COMPILER_PREFIX: $(COMPILER_PREFIX)"
	@echo "CC: $(CC)"
	@echo "LD: $(LD)"
	@echo "CFLAGS: $(CFLAGS)"
	@echo "LDFLAGS: $(LDFLAGS)"

#------------------------------------------------------------------------------#
# libiconv

libiconv.src.stamp: ../downloads/libiconv-1.15.tar.gz
	tar xvf $<
	mv libiconv-1.15 libiconv
	touch $@

libiconv-src: libiconv.src.stamp

libiconv-clean:
	rm -rf libiconv
	rm -rf libiconv.src.stamp

libiconv/Makefile: libiconv.src.stamp
	cd libiconv && \
		CC="$(CC)" LD="$(LD)" AR="$(AR)" AS="$(AS)" RANLIB=$(RANLIB) STRIP="$(STRIP)" CFLAGS="$(CFLAGS)" LDFLAGS="$(LDFLAGS)" \
			./configure \
				--with-lib-path=$(LOCAL)/lib \
                --with-include-path=$(LOCAL)/include \
				--host=$(HOST) \
				--enable-static \
				--disable-shared \
				--prefix=$(LOCAL)

libiconv/lib/.libs/libiconv.a: libiconv/Makefile
	$(MAKE) -C libiconv

$(LOCAL)/lib/libiconv.a: libiconv/lib/.libs/libiconv.a
	$(MAKE) -C libiconv DESTDIR=$(DESTDIR) prefix=$(prefix) install
	ls -l $(LOCAL)/lib/libiconv.a

libiconv-build: libiconv/lib/.libs/libiconv.a

libiconv-install: $(LOCAL)/lib/libiconv.a

#------------------------------------------------------------------------------#
# libetpan
libetpan.src.stamp: ../downloads/libetpan.tar.gz
	mkdir -p libetpan
	cd libetpan && tar xvf ../$<
	touch $@

libetpan/Makefile: libetpan.src.stamp | libiconv-install
	cd libetpan/build-android; ICONV_PREFIX=$(LOCAL) bash ./build.sh $(APP_ABI)
	cp -r libetpan/build-android/libetpan-android-$(ANDROID_ETPAN_BUILD_VERSION)/$(APP_ABI)/lib/* $(LOCAL)/lib/
	cp -r libetpan/build-android/libetpan-android-$(ANDROID_ETPAN_BUILD_VERSION)/include/* $(LOCAL)/include/
	touch $@

libetpan-build: libetpan/Makefile

libetpan-clean:
	rm -rf libetpan
	rm -rf libetpan.src.stamp

#------------------------------------------------------------------------------#
# uuid

uuid.src.stamp: ../downloads/ossp-uuid_1.6.2.orig-patched.tar.gz
	tar xvf $<
	mv uuid-1.6.2 uuid
	touch $@

uuid-src: uuid.src.stamp

uuid-clean:
	rm -rf uuid
	rm -rf uuid.src.stamp

uuid/Makefile: uuid.src.stamp
	$(SED) -i 's,AC_CHECK_VA_COPY(),,' uuid/uuid.ac
	cd uuid && autoconf
	cp ../config.sub uuid
	cp ../config.guess uuid
	cd uuid && \
		CC="$(CC)" AR="$(AR)" RANLIB=$(RANLIB) CFLAGS="$(CFLAGS)" LDFLAGS="$(LDFLAGS)" \
			./configure \
				--enable-static \
				--host=$(HOST) \
				--with-gnu-ld \
				--prefix=$(LOCAL)

uuid/.libs/libuuid.so: uuid/Makefile
	$(MAKE) -C uuid

$(LOCAL)/lib/libuuid.so: uuid/.libs/libuuid.so
	# install fails copying uuid cmdline tool, but libs are copied ...
	-$(MAKE) -C uuid DESTDIR=$(DESTDIR) prefix=$(prefix) install
	echo "****** THIS ERROR WAS WILLINGLY IGNORED ******"
	ls -l $(LOCAL)/lib/libuuid.so

uuid-build: uuid/.libs/libuuid.so

uuid-prebuild: uuid/jni/Android.mk uuid/Makefile

uuid-install: $(LOCAL)/lib/libuuid.so | uuid-prebuild

uuid/jni/Android.mk: uuid.src.stamp
	mkdir -p uuid/jni
	cp ../libuuid.Android.mk uuid/jni/Android.mk


#------------------------------------------------------------------------------#
# Sequoia

sequoia-deps-build: openssl-install nettle-install

#------------------------------------------------------------------------------#
# OpenSSL

openssl.src.stamp: ../downloads/openssl-$(OPENSSL_VERSION).tar.gz
	tar xvf $<
	mv openssl-$(OPENSSL_VERSION) openssl
	touch $@

openssl-src: openssl.src.stamp

openssl-clean:
	rm -rf openssl
	rm -rf openssl.src.stamp

OPENSSL_ARCHITECTURE:=[OPENSSL_ARCHITECTURE]

openssl/Makefile: openssl.src.stamp
	cd openssl && \
	     PATH="$(ANDROID_NDK_HOME)/bin:$(PATH)" ../../configure_openssl.sh ${OPENSSL_ARCHITECTURE} $(ANDROID_API) $(LOCAL)
openssl/libssl.so: | openssl/Makefile
	PATH="$(ANDROID_NDK_HOME)/bin:$(PATH)" $(MAKE) -C openssl

$(LOCAL)/lib/libssl.so: openssl/libssl.so
	cd openssl && \
		cp libcrypto.so $(LOCAL)/lib && \
		cp libcrypto.a $(LOCAL)/lib && \
		cp libssl.so $(LOCAL)/lib && \
		cp libssl.a $(LOCAL)/lib
	ls -l $(LOCAL)/lib/libssl.so

openssl-build: openssl/libssl.so

openssl-install: $(LOCAL)/lib/libssl.so


#------------------------------------------------------------------------------#
# GMP

gmp.src.stamp: ../downloads/gmp-$(GMP_VERSION).tar.bz2
	tar xvf $<
	mv gmp-$(GMP_VERSION) gmp
	touch $@

gmp-src: gmp.src.stamp

gmp-clean:
	rm -rf gmp
	rm -rf gmp.src.stamp

gmp/Makefile: gmp.src.stamp
	cd gmp && \
		CC="$(CC)" LD="$(LD)" AR="$(AR)" AS="$(AS)" RANLIB=$(RANLIB) STRIP="$(STRIP)" CFLAGS="$(CFLAGS)" LDFLAGS="$(LDFLAGS)" \
			./configure \
				--host=$(HOST) \
				--prefix=$(LOCAL) \
			    --disable-static[GMP_MAKEFILE_EXTRA]


gmp/.libs/libgmp.so: gmp/Makefile
	$(MAKE) -C gmp

$(LOCAL)/lib/libgmp.so: gmp/.libs/libgmp.so
	$(MAKE) -C gmp DESTDIR=$(DESTDIR) prefix=$(prefix) install
	#gmp/libtool --finish $(LOCAL)/lib/
	ls -l $(LOCAL)/lib/libgmp.so
	touch $@

gmp-build: gmp/.libs/libgmp.so

gmp-install: $(LOCAL)/lib/libgmp.so


#------------------------------------------------------------------------------#
# NETTLE

nettle.src.stamp: ../downloads/nettle-$(NETTLE_VERSION)-patched.tar.gz $(LOCAL)/lib/libgmp.so
	tar xvf $<
	mv nettle-$(NETTLE_VERSION) nettle
	touch $@

nettle-src: nettle.src.stamp

nettle-clean:
	rm -rf nettle
	rm -rf nettle.src.stamp

nettle/Makefile: nettle.src.stamp gmp-install
	cd nettle && \
		CC="$(CC)" LD="$(LD)" AR="$(AR)" AS="$(AS)" RANLIB=$(RANLIB) STRIP="$(STRIP)" CFLAGS="$(CFLAGS)" LDFLAGS="$(LDFLAGS)" \
			./configure \
				--with-lib-path=$(LOCAL)/lib \
                --with-include-path=$(LOCAL)/include \
                --disable-static \
                --disable-documentation \
				--host=$(HOST) \
				--prefix=$(LOCAL)

nettle/libnettle.so: nettle/Makefile
	$(MAKE) -C nettle

$(LOCAL)/lib/libnettle.so: nettle/libnettle.so
	$(MAKE) -C nettle DESTDIR=$(DESTDIR) prefix=$(prefix) install
	cp nettle/libnettle.so $(LOCAL)/lib/libnettle.so
	cp nettle/libhogweed.so $(LOCAL)/lib/libhogweed.so

nettle-build: nettle/libnettle.so

nettle-install: $(LOCAL)/lib/libnettle.so


#------------------------------------------------------------------------------#
# Sequoia-ffi

CARGO_TARGET_DIR=$(EXTERNAL_ROOT)/../build/

sequoia.src.stamp: ../downloads/sequoia.tar.gz
	mkdir -p sequoia
	cd sequoia && tar xvf ../$<
	$(SED) -i 's,1.48.0,1.49.0,' sequoia/rust-toolchain
	cd sequoia && cargo update -p nettle-sys --precise 2.0.8
	mkdir -p $(LOCAL)/lib/
# This is a bad fix, we should move this to a common makefile (but not the .conf one)
	find -L $(ANDROID_NDK) -name libunwind.a -execdir sh -c 'echo "INPUT(-lunwind)" > $(LOCAL)/lib/libgcc.a' \;
	touch $@

sequoia-ffi-clean:
	rm -rf sequoia
	rm -rf sequoia.src.stamp

$(CARGO_TARGET_DIR)/[SEQUOIA_ARCH]/release/libsequoia_openpgp_ffi.so:  sequoia.src.stamp sequoia-deps-build
	cd sequoia && PATH="$(ANDROID_NDK_HOME)/bin:$(PATH)" \
	CC="$(CC)" LD="$(LD)" AR="$(AR)" AS="$(AS)" RANLIB=$(RANLIB) STRIP="$(STRIP)" CFLAGS="$(CFLAGS)" LDFLAGS="$(LDFLAGS)" \
	LD_LIBRARY_PATH=$(LOCAL)/lib/ \
	PKG_CONFIG_PATH=$(LOCAL)/lib/pkgconfig \
	PKG_CONFIG_ALLOW_CROSS=1 \
	ARMV7_LINUX_ANDROIDEABI_OPENSSL_LIB_DIR="$(LOCAL)/lib" \
	ARMV7_LINUX_ANDROIDEABI_OPENSSL_INCLUDE_DIR="$(LOCAL)/include" \
	ARMV7_LINUX_ANDROIDEABI_OPENSSL_DIR="$(LOCAL)/bin" \
	CARGO_TARGET_DIR=$(CARGO_TARGET_DIR) cargo build --target [SEQUOIA_ARCH] -p sequoia-openpgp-ffi --release

$(LOCAL)/lib/libsequoia_openpgp_ffi.so: $(CARGO_TARGET_DIR)/[SEQUOIA_ARCH]/release/libsequoia_openpgp_ffi.so
	cp $(CARGO_TARGET_DIR)/[SEQUOIA_ARCH]/release/libsequoia_openpgp_ffi.* $(LOCAL)/lib/
	cp -r sequoia/openpgp-ffi/include/* $(LOCAL)/include


sequoia-ffi-build: $(CARGO_TARGET_DIR)/[SEQUOIA_ARCH]/release/libsequoia_openpgp_ffi.so

sequoia-ffi-install: sequoia-deps-build $(LOCAL)/lib/libsequoia_openpgp_ffi.so

#------------------------------------------------------------------------------#
# assets for Android app

#ASSETS := $(EXTERNAL_ROOT)/assets
#
#assets: clean-assets
#	# add the new stuff
#	install -d $(ASSETS)
#	cp -a $(LOCAL)/* $(ASSETS)
#	# remove all the stuff we don't need
#	rm -f $(ASSETS)/bin/*-static
#	rm -f $(ASSETS)/bin/curl*
#	rm -f $(ASSETS)/lib/*.a $(ASSETS)/lib/*.la
#	# remove lib symlinks since Android AssetManager copies them as files
#	rm -f $(ASSETS)/lib/*.so
#	# remove .so.0 symlink and rename the .so.0.12.0 file to it
#	for f in $(ASSETS)/lib/*.so.[0-9]*; do \
#		echo $$f; \
#		test ! -L $$f || \
#			(rm $$f && mv $$f.[0-9]* $$f); \
#	done
#	rm -rf $(ASSETS)/include
#	rm -rf $(ASSETS)/share/man $(ASSETS)/share/info $(ASSETS)/share/doc
#	rm -rf $(ASSETS)/tests
#

#------------------------------------------------------------------------------#
# clean

clean-assets:
	rm -rf $(ASSETS)

clean-install:
	rm -rf $(LOCAL)

clean: $(EXTERNAL_SRCS_CLEAN) clean-assets clean-install libetpan-clean

clean-all: clean
	rm -rf *.git
	rm -rf *.stamp
#------------------------------------------------------------------------------#

.PHONY = clean clean-install clean-assets libetpan-clean \
	libiconv-build libiconv-install \
	libetpan-build \
	uuid-build uuid-prebuild uuid-install \
	gmp-build  gmp-install \
	sequoia-deps-build \
	openssl-build  openssl-install \
	nettle-build  nettle-install \
	sequoia-ffi-build sequoia-ffi-install\
	assets \
    $(EXTERNAL_LOCAL_GITS_UPDATE) $(EXTERNAL_SRCS) $(EXTERNAL_SRCS_CLEAN)\
	showsetup