# Maintainer: Marian Buschsieweke <marian.buschsieweke@ovgu.de>

_pkgbase=newlib
_targets="
	mips-mti-elf
	msp430-elf
	arm-none-eabi
	"
pkgname="$_pkgbase"
pkgver="3.0.0.20180831"
pkgrel=1
pkgdesc="A C standard library implementation intended for use on embedded systems"
url="http://www.sourceware.org/newlib/"
makedepends="texinfo"
arch="all !mips !mips64"
license="BSD"
source="
	ftp://sourceware.org/pub/${_pkgbase}/${_pkgbase}-${pkgver}.tar.gz
	"
options="!check"

for target in $_targets; do
	targetnorm="${target//-/_}"
	subpackages="${_pkgbase}-${target}:${targetnorm} ${subpackages}"
	makedepends="binutils-${target} gcc-${target} ${makedepends}"
done

builddir="$srcdir/$_pkgbase-$pkgver"

# This package installes two version of the newlib library to remain compatible
# with projects expecting the GNU ARM Embedded Toolchain [1]. The nano version
# appends the postix "_nano" to the libaries. The is not an arbitrary choice,
# it matches the specs in "/usr/arm-none-eabi/lib/nano.specs", which is
# part of the default newlib installation.
# [1]: https://launchpad.net/gcc-arm-embedded/

build() {
	for target in $_targets; do
		mkdir "${builddir}/build-$target" "${builddir}/build-$target-nano"
		# nano version
		cd "${builddir}/build-$target-nano"
		"$builddir"/configure \
				--target=$target \
				--prefix=/usr/ \
				--infodir=/deleteme/info \
				--mandir=/deleteme/man \
				--htmldir=/deleteme/html \
				--pdfdir=/deleteme/pdf \
				--disable-newlib-supplied-syscalls \
				--disable-nls \
				--disable-newlib-fseek-optimization \
				--disable-newlib-fvwrite-in-streamio \
				--disable-newlib-unbuf-stream-opt \
				--disable-newlib-wide-orient \
				--enable-lite-exit \
				--enable-newlib-global-atexit \
				--enable-newlib-nano-formatted-io \
				--enable-newlib-nano-malloc \
				--enable-newlib-reent-small \
				CC_FOR_TARGET="$target"-gcc \
				GCC_FOR_TARGET="$target"-gcc \
				AR_FOR_TARGET="$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 \
				CFLAGS="-Os -ffunction-sections -fdata-sections -fshort-wchar"
		make

		# regular version
		cd "${builddir}/build-$target"
		"$builddir"/configure \
				--host=$CHOST \
				--target=$target \
				--prefix=/usr \
				--infodir=/deleteme/info \
				--mandir=/deleteme/man \
				--htmldir=/deleteme/html \
				--pdfdir=/deleteme/pdf \
				--disable-newlib-supplied-syscalls \
				--disable-nls \
				--enable-newlib-io-long-long \
				--enable-newlib-register-fini \
				CC_FOR_TARGET="$target"-gcc \
				GCC_FOR_TARGET="$target"-gcc \
				AR_FOR_TARGET="$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 \
				CFLAGS="-O2 -ffunction-sections -fdata-sections -pipe"
		make
	done
}

package() {
	for target in $_targets; do
		depends="$depends $_pkgbase-$target"
	done
	mkdir -p "$pkgdir"
}

_install_subpkg() {
	pkgdesc="A C standard library implementation intended for ${target}"
	target="${subpkgname#$_pkgbase-}"
	depends="binutils-${target} gcc-${target} ${depends}"
	mkdir -p "$subpkgdir"
	# install nano version
	cd "${builddir}/build-${target}-nano"
	make -j1 DESTDIR="$subpkgdir" install
	# rename nano version libs
	cd "${subpkgdir}/usr/$target/lib"
	for file in $(find . -regex ".*\(c\|g\|rdimon\)\.a"); do
		mv "$file" "${file%.a}_nano.a"
	done
	mkdir -p "${subpkgdir}/usr/$target/include/nano"
	mv "${subpkgdir}/usr/$target/include/newlib.h" \
	   "${subpkgdir}/usr/$target/include/nano/"

	# install regular version
	cd "${builddir}/build-${target}"
	make -j1 DESTDIR="$subpkgdir" install
	rm -rf "${subpkgdir}/deleteme"
}

arm_none_eabi() {
	_install_subpkg
}

mips_mti_elf() {
	_install_subpkg
}

msp430_elf() {
	_install_subpkg
}

sha512sums="c195111ac61458fccbd700345cd8ed7806776b3d16557e9a86fbcdf0ff5f544bff7eb701e84defb3f6b4d6fc00674163fa89aead1b171ed3281470a4f6306d1f  newlib-3.0.0.20180831.tar.gz"