Wharfie

SHELL=/bin/bash
PATH := $(PATH):/sbin:/usr/sbin
SUDO=$(shell PATH=${PATH}:/sbin:/usr/sbin which sudo)
FAKEROOT=$(shell PATH=${PATH}:/sbin:/usr/sbin which fakeroot)
FAKECHROOT=$(shell PATH=${PATH}:/sbin:/usr/sbin which fakechroot)
DBOOTSTRAP=$(shell PATH=${PATH}:/sbin:/usr/sbin which qemu-debootstrap)
DBOOTSTRAP2=$(shell PATH=${PATH}:/sbin:/usr/sbin which debootstrap)
PACKAGES=locales systemd

MAKEFILE_PATH := $(abspath $(lastword $(MAKEFILE_LIST)))
CWD := $(dir $(MAKEFILE_PATH))

# extend path to sbin binaries
export PATH := /usr/sbin:${PATH}

ifeq (${SUDO},)
$(error sudo not found. On debian, you may install the package sudo first)
endif

#ifeq (${FAKEROOT},)
#$(error fakeroot not found. On debian, you may install the package fakeroot first)
#endif

#ifeq (${FAKECHROOT},)
#$(error fakechroot not found. On debian, you may install the package fakechroot first)
#endif

ifeq (${DBOOTSTRAP},)
$(error qemu-debootstrap not found. On debian, you may install the package qemu-user-static first)
endif

ifeq (${DBOOTSTRAP2},)
$(error debootstrap not found. On debian, you may install the package debootstrap first)
endif

.PHONY: test
test:
	echo ${FAKEROOT}


#
# Debian / ARM Hardfloat
#
.PHONY: debian_armhf_%.tar
debian_armhf_%.tar: 
	-mkdir ./$$(basename $@ .tar)
	${SUDO} ${DBOOTSTRAP} --arch=armhf --variant=minbase --include="${PACKAGES}" $* ./$$(basename $@ .tar) http://ftp.debian.org/debian/
	(echo "deb http://ftp.debian.org/debian $* main"; \
	 echo "deb-src http://ftp.debian.org/debian $* main") | ${SUDO} tee ./$$(basename $@ .tar)/etc/apt/sources.list
	cd $$(basename $@ .tar); ${SUDO} tar -cf "../$@" .
	${SUDO} rm -R ./$$(basename $@ .tar)
	echo DEBIAN_VERSION=$* > debian_version.mk
	echo GCC_POSTFIX=-arm-none-eabi >> debian_version.mk
	echo LIBC_POSTFIX=-armhf-cross >> debian_version.mk

#
# Debian / ARM EABI
#
.PHONY: debian_armel_%.tar
debian_armel_%.tar: 
	-mkdir ./$$(basename $@ .tar)
	${SUDO} ${DBOOTSTRAP} --arch=armel --variant=minbase --include="${PACKAGES}" $* ./$$(basename $@ .tar) http://ftp.debian.org/debian/
	(echo "deb http://ftp.debian.org/debian $* main"; \
	 echo "deb-src http://ftp.debian.org/debian $* main") | ${SUDO} tee ./$$(basename $@ .tar)/etc/apt/sources.list
	cd $$(basename $@ .tar); ${SUDO} tar -cf "../$@" .
	${SUDO} rm -R ./$$(basename $@ .tar)
	echo DEBIAN_VERSION=$* > debian_version.mk
	echo GCC_POSTFIX=-arm-none-eabi >> debian_version.mk
	echo LIBC_POSTFIX=-armel-cross >> debian_version.mk

#
# Debian x86/amd64...
# extended for debian_{amd64,i386}_{deb_version}.tar
# or old format "debian_{deb_version}.tar"
.PHONY: debian_%.tar
debian_%.tar: 
	$(eval ARCH:=$(if $(word 3,$(subst _, ,$@)),$(word 2,$(subst _, ,$@)),"i386"))
	$(eval VERSION:=$(if $(word 3,$(subst _, ,$@)),$(basename $(word 3,$(subst _, ,$@))),$(basename $(word 2,$(subst _, ,$@)))))
	-mkdir ./$$(basename $@ .tar)
	${SUDO} ${DBOOTSTRAP} --arch=${ARCH} --variant=minbase --include="${PACKAGES}" ${VERSION} ./$$(basename $@ .tar) http://ftp.debian.org/debian/
	(echo "deb http://ftp.debian.org/debian ${VERSION} main"; \
	 echo "deb-src http://ftp.debian.org/debian ${VERSION} main") | ${SUDO} tee ./$$(basename $@ .tar)/etc/apt/sources.list
	cd $$(basename $@ .tar); ${SUDO} tar -cf "../$@" .
	${SUDO} rm -R ./$$(basename $@ .tar)
	echo DEBIAN_VERSION=${VERSION} > debian_version.mk
	echo GCC_POSTFIX= >> debian_version.mk
	echo LIBC_POSTFIX= >> debian_version.mk

-include debian_version.mk

#
# Debian Cross-Toolchain
#
debian_toolchain.tar:
	-mkdir ./$$(basename $@ .tar)
	${SUDO} ${DBOOTSTRAP} --arch=amd64 --variant=minbase --include="${ADDITIONAL_TOOLCHAIN_PACKAGES} gcc${GCC_POSTFIX} g++${GCC_POSTFIX} libc6-dev${LIBC_POSTFIX}" ${DEBIAN_VERSION} ./$$(basename $@ .tar) http://ftp.debian.org/debian/
	${SUDO} chroot ./$$(basename $@ .tar) ldconfig
	cd $$(basename $@ .tar); ${SUDO} tar -cf "../$@" .
	${SUDO} rm -R ./$$(basename $@ .tar)

#
# Export environment shell script for the toolchain
#

define ENV_SH
TC_PATH=$$(dirname $$_)

SYSROOT=$${TC_PATH}/target
INCLUDEDIR=$${TC_PATH}/host/usr/arm-linux-gnueabihf/include/
LIBRARYDIR=$${TC_PATH}/target/usr/lib/arm-linux-gnueabihf/

COMPILE_PREFIX=$${TC_PATH}/host/usr/bin/arm-none-eabi-
PLUGINDIR=$$(dirname $$(readlink -f $${TC_PATH}/host/usr/lib/gcc/arm-none-eabi/*/liblto_plugin.so))
HOSTLIBDIR=$${TC_PATH}/host/usr/lib/i386-linux-gnu/:$${TC_PATH}/host/usr/lib/:$${TC_PATH}/host/lib

LD_LIBRARY_PATH=$${HOSTLIBDIR}
CC=$${COMPILE_PREFIX}gcc
CXX=$${COMPILE_PREFIX}cpp
LD=$${COMPILE_PREFIX}ld
AS=$${COMPILE_PREFIX}as
AR=$${COMPILE_PREFIX}ar
NM=$${COMPILE_PREFIX}nm
GCOV=$${COMPILE_PREFIX}gcov
OBJDUMP=$${COMPILE_PREFIX}objdump
CFLAGS=
LDFLAGS=
# common C/LD Flags
CFLAGS="$${CFLAGS} --sysroot=$${SYSROOT}"
CFLAGS="$${CFLAGS} -B$${PLUGINDIR} -mfloat-abi=hard"
LDFLAGS="$${CFLAGS}"
# CFLAGS
CFLAGS="$${CFLAGS} --sysroot=$${SYSROOT}"
CFLAGS="-I$${INCLUDEDIR}"

# LDFLAGS
LDFALGS="-L$${LIBRARYDIR}"
LDFLAGS="$${LDFLAGS} -L$${LIBRARYDIR}"
LDFLAGS="$${LDFLAGS} -B$${LIBRARYDIR}"
LDFLAGS="$${LDFLAGS} -lc"

export CC
export CXX
export LD
export AS
export AR
export NM
export GCOV
export OBJDUMP
export CFLAGS
export LDFLAGS
export LD_LIBRARY_PATH
endef

export ENV_SH

debian_toolchain_env.sh:
	@echo "$${ENV_SH}" > $@

# output some info about the locally generated filesystem
info:
	@[ -f ${OUTPUT_FILE} ] || (echo "The image is not build, yet."; false)
	@targethostname="$$(tar -O -xf ${OUTPUT_FILE} ./etc/hostname)"; \
	 printf "Hostname: %s\n" $${targethostname}; \
	 printf "IP: %s (if target is running)\n" $$(ping -c 1 "${targethostname}" 2>&1 | sed -n '/bytes from/ s,.*(\([^)]*\)).*,\1, p')

clean:
	rm -f *.piling.tar
	for i in ???????.piling/proc; do sudo rm -Rf "./$$(dirname $$i)"; done