# 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

# Build parameters
APP_ABI ?= [ARCH]
HOST ?= [HOST]
NDK_TOOLCHAIN_TARGET ?= [NDK_TOOLCHAIN_TARGET]
SEQUOIA_ARCH ?= [SEQUOIA_ARCH]
OPENSSL_ARCHITECTURE ?= [OPENSSL_ARCHITECTURE]
COMPILER_PREFIX ?= [COMPILER_PREFIX]

# This include is dependent on the *build parameters* defined above and needs to be declared after them
include ../PerArchMakefile.conf

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

#------------------------------------------------------------------------------#

## Same as build
all: build

## Build dependencies for arch [ARCH]
build: showsetup uuid-prebuild pEpEngineSequoiaBackend-install libetpan-build

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

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

CFLAGS += $(MYCFLAGS)
LDFLAGS += $(MYLDFLAGS)

#------------------------------------------------------------------------------#
# 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

## Show setup values for [ARCH] Makefile
showsetup:
	@echo "${YELLOW}============================================== CURRENT SETUP ====================================================${RESET}"
	@echo "${YELLOW}NDK_TOOLCHAIN: $(NDK_TOOLCHAIN)${RESET}"
	@echo "${YELLOW}NDK_TOOLCHAIN_COMPILER: $(NDK_TOOLCHAIN_COMPILER)${RESET}"
	@echo "${YELLOW}NDK_TOOLCHAIN_TARGET: $(NDK_TOOLCHAIN_TARGET)${RESET}"
	@echo "${YELLOW}TEMP_WORK_PATH: $(TEMP_WORK_PATH)${RESET}"
	@echo "${YELLOW}LOCAL: $(LOCAL)${RESET}"
	@echo "${YELLOW}APP_ABI: $(APP_ABI)${RESET}"
	@echo "${YELLOW}HOST: $(HOST)${RESET}"
	@echo "${YELLOW}SEQUOIA_ARCH: $(SEQUOIA_ARCH)${RESET}"
	@echo "${YELLOW}CC: $(CC)${RESET}"
	@echo "${YELLOW}LD: $(LD)${RESET}"
	@echo "${YELLOW}AR: $(AR)${RESET}"
	@echo "${YELLOW}AS: $(AS)${RESET}"
	@echo "${YELLOW}STRIP: $(STRIP)${RESET}"
	@echo "${YELLOW}RANLIB: $(RANLIB)${RESET}"
	@echo "${YELLOW}CFLAGS: $(CFLAGS)${RESET}"
	@echo "${YELLOW}LDFLAGS: $(LDFLAGS)${RESET}"
	@echo "${YELLOW}============================================== CURRENT SETUP END ====================================================${RESET}"

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

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

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

## Build iconv
libiconv-build: libiconv/lib/.libs/libiconv.a

## Install iconv
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 | $(LOCAL)/lib/libiconv.a
	cd libetpan/build-android; ICONV_PREFIX=$(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 $@

## Build etpan
libetpan-build: libetpan/Makefile

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

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

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

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

$(LOCAL)/include/uuid.h: uuid/Makefile
	mkdir -p $(LOCAL)/include && cd uuid && cp uuid.h $(LOCAL)/include

## Prebuild uuid
uuid-prebuild: uuid/jni/Android.mk $(LOCAL)/include/uuid.h

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


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

## Build sequoia dependencies
sequoia-deps-build: $(LOCAL)/lib/libssl.so $(LOCAL)/lib/libnettle.so

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

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

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

$(LOCAL)/lib/libssl.so: openssl/libssl.so
	mkdir -p $(LOCAL)/lib && 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

## Build openssl
openssl-build: openssl/libssl.so

## Install openssl
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/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 $@

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

## Install gmp
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/Makefile: nettle.src.stamp $(LOCAL)/lib/libgmp.so
	cd nettle && \
		CC="$(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

## Build nettle
nettle-build: nettle/libnettle.so

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


#------------------------------------------------------------------------------#
# pEpEngineSequoiaBackend

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

pEpEngineSequoiaBackend.src.stamp: ../downloads/pEpEngineSequoiaBackend.tar.gz
	mkdir -p pEpEngineSequoiaBackend
	cd pEpEngineSequoiaBackend && tar xvf ../$<
	$(SED) -i 's,1.48.0,1.60,' pEpEngineSequoiaBackend/rust-toolchain
	cp ../Cargo.toml.tmp pEpEngineSequoiaBackend/Cargo.toml
	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 $@

$(CARGO_TARGET_DIR)/$(SEQUOIA_ARCH)/release/libpep_engine_sequoia_backend.a:  pEpEngineSequoiaBackend.src.stamp $(LOCAL)/lib/libssl.so $(LOCAL)/lib/libnettle.so
	cd pEpEngineSequoiaBackend && PATH=$(TEMP_WORK_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 pep_engine_sequoia_backend --release

$(LOCAL)/lib/libpep_engine_sequoia_backend.a: $(CARGO_TARGET_DIR)/$(SEQUOIA_ARCH)/release/libpep_engine_sequoia_backend.a
	cp $(CARGO_TARGET_DIR)/$(SEQUOIA_ARCH)/release/libpep_engine_sequoia_backend.* $(LOCAL)/lib/


pEpEngineSequoiaBackend-build: $(CARGO_TARGET_DIR)/$(SEQUOIA_ARCH)/release/libpep_engine_sequoia_backend.a

pEpEngineSequoiaBackend-install: $(LOCAL)/lib/libssl.so $(LOCAL)/lib/libnettle.so $(LOCAL)/lib/libpep_engine_sequoia_backend.a

#------------------------------------------------------------------------------#
# 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:
	-rm -rf $*
	-rm -rf $*.src.stamp

clean-assets:
	-rm -rf $(ASSETS)

## Delete install destination folder
clean-install:
	-rm -rf $(LOCAL)

## Remove generated artifacts
clean: $(EXTERNAL_SRCS_CLEAN) clean-assets clean-install libetpan-clean

## Remove generated artifacts and files
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 \
	gmp-build  gmp-install \
	sequoia-deps-build \
	openssl-build  openssl-install \
	nettle-build  nettle-install \
	pEpEngineSequoiaBackend-build pEpEngineSequoiaBackend-install \
	assets \
    $(EXTERNAL_LOCAL_GITS_UPDATE) $(EXTERNAL_SRCS) $(EXTERNAL_SRCS_CLEAN) \
	showsetup

#------------------------------------------------------------------------------#

.SECONDEXPANSION:
# src
%-src: %.src.stamp
	@echo $<

include ../help.mk
helpPurpose='Cross-compile external dependencies of pEpEngine for arch [ARCH]'