#!/usr/bin/make -f
export DH_VERBOSE=1

include /usr/share/dpkg/pkg-info.mk

MULTILIB_LIST="--with-multilib-list=rmprofile"

PACKAGE_GCC=gcc-arm-none-eabi
PACKAGE_GCC_SOURCE=gcc-arm-none-eabi-source
TARGET=arm-none-eabi
TOP_DIR=$(shell pwd)

UPSTREAM_URL=https://developer.arm.com/-/media/Files/downloads/gnu-rm/7-2018q2/gcc-arm-none-eabi-7-2018-q2-update-src.tar.bz2
GCC_BUILD_DIR=$(TOP_DIR)/build
GCC_SOURCE_DIR=$(TOP_DIR)
GCC_DEB_TMP_DIR=$(TOP_DIR)/debian/$(PACKAGE_GCC)-tmp
GCC_DOC_TEXI_LEGEND_DIR=$(TOP_DIR)/../texi_legend.txt
GCC_SOURCE_DEB_TMP_DIR=$(TOP_DIR)/debian/$(PACKAGE_GCC_SOURCE)-tmp

export DEB_BUILD_MAINT_OPTIONS=hardening=-format
BUILDFLAGS:=$(shell dpkg-buildflags --export=configure) INHIBIT_LIBC_CFLAGS="-DUSE_TM_CLONE_REGISTRY=0"

TARGET_TOOLS=\
	AR_FOR_TARGET=$(TARGET)-ar \
	AS_FOR_TARGET=$(TARGET)-as \
	LD_FOR_TARGET=$(TARGET)-ld \
	NM_FOR_TARGET=$(TARGET)-nm \
	OBJDUMP_FOR_TARGET=$(TARGET)-objdump \
	RANLIB_FOR_TARGET=$(TARGET)-ranlib \
	READELF_FOR_TARGET=$(TARGET)-readelf \
	STRIP_FOR_TARGET=$(TARGET)-strip

CONFIGURE_GCC_FLAGS = \
	--mandir=/usr/share/man \
	--enable-languages=c,c++,lto \
	--enable-multilib \
	--disable-decimal-float \
	--disable-libffi \
	--disable-libgomp \
	--disable-libmudflap \
	--disable-libquadmath \
	--disable-libssp \
	--disable-libstdcxx-pch \
	--disable-nls \
	--disable-shared \
	--disable-threads \
	--disable-tls \
	--build=$(DEB_BUILD_GNU_TYPE) \
	--target=$(TARGET) \
	--with-system-zlib \
	--with-gnu-as \
	--with-gnu-ld \
	"--with-pkgversion=$(DEB_VERSION)" \
	--without-included-gettext \
	--prefix=/usr/lib \
	--infodir=/usr/share/doc/$(PACKAGE_GCC)/info \
	--htmldir=/usr/share/doc/$(PACKAGE_GCC)/html \
	--pdfdir=/usr/share/doc/$(PACKAGE_GCC)/pdf \
	--bindir=/usr/bin \
	--libexecdir=/usr/lib \
	--libdir=/usr/lib \
	--disable-libstdc++-v3 \
	--host=$(DEB_HOST_GNU_TYPE) \
	--with-headers=no \
	--without-newlib \
	$(MULTILIB_LIST) \
	$(BUILDFLAGS) \
	$(TARGET_TOOLS)

%:
	dh $@ -D$(GCC_SOURCE_DIR) -B$(GCC_BUILD_DIR) --parallel --with autoreconf

override_dh_autoreconf:
	autoreconf2.64 -f $(GCC_SOURCE_DIR)

override_dh_auto_configure:
	dh_auto_configure -D$(GCC_SOURCE_DIR) -B$(GCC_BUILD_DIR) -- $(CONFIGURE_GCC_FLAGS)

override_dh_auto_install:
	$(MAKE) install -C$(GCC_BUILD_DIR) DESTDIR=$(GCC_DEB_TMP_DIR)

override_dh_auto_test:
	@echo "no testing, that's way too painful"

override_dh_clean:
	rm -rf $(GCC_BUILD_DIR)
	rm -rf $(GCC_DEB_TMP_DIR) $(GCC_SOURCE_DEB_TMP_DIR)
	rm -rf 32 x32
	dh_clean

override_dh_auto_build:
	dh_auto_build -B $(GCC_BUILD_DIR)

override_dh_strip:
	dh_strip -X.a

override_dh_install:
	dh_install -p$(PACKAGE_GCC) --sourcedir $(GCC_DEB_TMP_DIR)
	mkdir -p $(GCC_SOURCE_DEB_TMP_DIR)/usr/src
	tar --exclude=build --exclude=.git --exclude=debian -C $(TOP_DIR) -c -f - . | xz -T0 > $(GCC_SOURCE_DEB_TMP_DIR)/usr/src/$(PACKAGE_GCC_SOURCE).tar.xz
	dh_install -p$(PACKAGE_GCC_SOURCE) --sourcedir $(GCC_SOURCE_DEB_TMP_DIR)

override_dh_compress:
	dh_compress -Xexamples/

get-orig-source:
	# This is just temporary, a Debian friendly way was already reported to
	# upstream here
	# https://answers.launchpad.net/gcc-arm-embedded/+question/671738
	wget $(UPSTREAM_URL) -O ../gcc-arm-none-eabi-7-2018-q2-update-src.tar.bz2
	python3 debian/repack-upstream.py ../gcc-arm-none-eabi-7-2018-q2-update-src.tar.bz2 ../gcc-arm-none-eabi_$(DEB_VERSION_UPSTREAM).orig.tar.xz