#!/usr/bin/bash
# JOBoRun		: Jwm OpenBox Obarun RUNit
# Maintainer	: Joe Bo Run <joborun@disroot.org>
# PkgSource		: url="https://gittea.disroot.org/joborun-pkg/jobcore/$pkgname"
# Website		: https://pozol.eu
#-----------------------------------------| DESCRIPTION |---------------------------------------

## "1" to enable IA32-EFI build in Arch x86_64, "0" to disable
_IA32_EFI_IN_ARCH_X64="1"

## "1" to enable EMU build, "0" to disable
_GRUB_EMU_BUILD="0"

[[ "${CARCH}" == 'x86_64' ]] && _EFI_ARCH='x86_64'
[[ "${CARCH}" == 'i686' ]] && _EFI_ARCH='i386'

[[ "${CARCH}" == 'x86_64' ]] && _EMU_ARCH='x86_64'
[[ "${CARCH}" == 'i686' ]] && _EMU_ARCH='i386'

pkgname='grub'
pkgdesc='GNU GRand Unified Bootloader (2)'
epoch=2
_tag='03e6ea18f6f834f177cad017279bedbb0a3de594' # git rev-parse grub-${_pkgver}
_pkgver=2.12
_unifont_ver='15.1.04'
pkgver=${_pkgver/-/}
pkgrel=01
url='https://www.gnu.org/software/grub/'
backup=('etc/default/grub'
        'etc/grub.d/40_custom')
install="${pkgname}.install"
options=('!makeflags')
conflicts=('grub-common' 'grub-bios' 'grub-emu' "grub-efi-${_EFI_ARCH}" 'grub-legacy')
replaces=('grub-common' 'grub-bios' 'grub-emu' "grub-efi-${_EFI_ARCH}")
provides=('grub-common' 'grub-bios' 'grub-emu' "grub-efi-${_EFI_ARCH}")
makedepends=('git' 'rsync' 'xz' 'freetype2' 'ttf-liberation' 'python' 'autogen'
             'texinfo' 'help2man' 'gettext' 'device-mapper' 'fuse3')
depends=('sh' 'xz' 'gettext' 'device-mapper' 'os-prober')
optdepends=('freetype2: For grub-mkfont usage'
            'fuse3: For grub-mount usage'
            'dosfstools: For grub-mkrescue FAT FS and EFI support'
            'lzop: For grub-mkrescue LZO support'
            'efibootmgr: For grub-install EFI support'
            'libisoburn: Provides xorriso for generating grub rescue iso using grub-mkrescue'
            'mtools: For grub-mkrescue FAT FS support')
if [[ "${_GRUB_EMU_BUILD}" == "1" ]]; then
    makedepends+=('libusbx' 'sdl')
    optdepends+=('libusbx: For grub-emu USB support'
                 'sdl: For grub-emu SDL support')
fi
#source=("git+https://git.savannah.gnu.org/git/grub.git#commit=${_commit}"
source=("git+https://git.savannah.gnu.org/git/grub.git#tag=${_tag}?signed"
        'git+https://git.savannah.gnu.org/git/gnulib.git'
        "https://ftp.gnu.org/gnu/unifont/unifont-${_unifont_ver}/unifont-${_unifont_ver}.bdf.gz"{,.sig}
        '0001-00_header-add-GRUB_COLOR_-variables.patch'
        '0002-10_linux-detect-archlinux-initramfs.patch'
        '0003-support-dropins-for-default-configuration.patch'
        'grub.default'
        'grub.default.run'
        'grub.default.66'
        'sbat.csv')

_backports=(
#	'aa7c1322671eef48ba72d3b733da37e63eb37328'
#	'07318ee7e11a00b9c1dea4c6b4edf62af35a511a'
#	'ad7fb8e2e02bb1dd0475ead9919c1c82514d2ef8'
)

_reverts=(
)

_configure_options=(
	PACKAGE_VERSION="${epoch}:${pkgver}-${pkgrel}"
	FREETYPE="pkg-config freetype2"
	BUILD_FREETYPE="pkg-config freetype2"
	--enable-nls
	--enable-device-mapper
	--enable-cache-stats
	--enable-grub-mkfont
	--enable-grub-mount
	--prefix="/usr"
	--bindir="/usr/bin"
	--sbindir="/usr/bin"
	--mandir="/usr/share/man"
	--infodir="/usr/share/info"
	--datarootdir="/usr/share"
	--sysconfdir="/etc"
	--program-prefix=""
	--with-bootdir="/boot"
	--with-grubdir="grub"
	--disable-silent-rules
	--disable-werror
)

prepare() {
	cd "${srcdir}/grub/"

	echo "Apply backports..."
	local _c
	for _c in "${_backports[@]}"; do
		git log --oneline -1 "${_c}"
		git cherry-pick -n "${_c}"
	done

	echo "Apply reverts..."
	local _c
	for _c in "${_reverts[@]}"; do
		git log --oneline -1 "${_c}"
		git revert -n "${_c}"
	done

	echo "Patch to enable GRUB_COLOR_* variables in grub-mkconfig..."
	## Based on http://lists.gnu.org/archive/html/grub-devel/2012-02/msg00021.html
	patch -Np1 -i "${srcdir}/0001-00_header-add-GRUB_COLOR_-variables.patch"

	echo "Patch to detect of Arch Linux initramfs images by grub-mkconfig..."
	patch -Np1 -i "${srcdir}/0002-10_linux-detect-archlinux-initramfs.patch"

	echo "Patch to support dropins for default configuration..."
	patch -Np1 -i "${srcdir}/0003-support-dropins-for-default-configuration.patch"

	echo "Fix DejaVuSans.ttf location so that grub-mkfont can create *.pf2 files for starfield theme..."
	sed 's|/usr/share/fonts/dejavu|/usr/share/fonts/dejavu /usr/share/fonts/TTF|g' -i "configure.ac"

	echo "Fix mkinitcpio 'rw' FS#36275..."
	sed 's| ro | rw |g' -i "util/grub.d/10_linux.in"

	echo "Fix OS naming FS#33393..."
	sed 's|GNU/Linux|Linux|' -i "util/grub.d/10_linux.in"

	echo "Pull in latest language files..."
	./linguas.sh

	echo "Avoid problem with unifont during compile of grub..."
	# http://savannah.gnu.org/bugs/?40330 and https://bugs.archlinux.org/task/37847
	gzip -cd "${srcdir}/unifont-${_unifont_ver}.bdf.gz" > "unifont.bdf"

	echo "Run bootstrap..."
	./bootstrap \
		--gnulib-srcdir="${srcdir}/gnulib/" \
		--no-git

	echo "Make translations reproducible..."
	sed -i '1i /^PO-Revision-Date:/ d' po/*.sed
}

_build_grub-common_and_bios() {
	echo "Set ARCH dependent variables for bios build..."
	if [[ "${CARCH}" == 'x86_64' ]]; then
		_EFIEMU="--enable-efiemu"
	else
		_EFIEMU="--disable-efiemu"
	fi

	echo "Copy the source for building the bios part..."
	cp -r "${srcdir}/grub/" "${srcdir}/grub-bios/"
	cd "${srcdir}/grub-bios/"

	echo "Unset all compiler FLAGS for bios build..."
	unset CFLAGS
	unset CPPFLAGS
	unset CXXFLAGS
	unset LDFLAGS
	unset MAKEFLAGS

	echo "Run ./configure for bios build..."
	./configure \
		--with-platform="pc" \
		--target="i386" \
		"${_EFIEMU}" \
		--enable-boot-time \
		"${_configure_options[@]}"

	if [ ! -z "${SOURCE_DATE_EPOCH}" ]; then
		echo "Make info pages reproducible..."
		touch -d "@${SOURCE_DATE_EPOCH}" $(find -name '*.texi')
 	fi

	echo "Run make for bios build..."
	make
}

_build_grub-efi() {
	echo "Copy the source for building the ${_EFI_ARCH} efi part..."
	cp -r "${srcdir}/grub/" "${srcdir}/grub-efi-${_EFI_ARCH}/"
	cd "${srcdir}/grub-efi-${_EFI_ARCH}/"

	echo "Unset all compiler FLAGS for ${_EFI_ARCH} efi build..."
	unset CFLAGS
	unset CPPFLAGS
	unset CXXFLAGS
	unset LDFLAGS
	unset MAKEFLAGS

	echo "Run ./configure for ${_EFI_ARCH} efi build..."
	./configure \
		--with-platform="efi" \
		--target="${_EFI_ARCH}" \
		--disable-efiemu \
		--enable-boot-time \
		"${_configure_options[@]}"

	echo "Run make for ${_EFI_ARCH} efi build..."
	make
}

_build_grub-emu() {
	echo "Copy the source for building the emu part..."
	cp -r "${srcdir}/grub/" "${srcdir}/grub-emu/"
	cd "${srcdir}/grub-emu/"

	echo "Unset all compiler FLAGS for emu build..."
	unset CFLAGS
	unset CPPFLAGS
	unset CXXFLAGS
	unset LDFLAGS
	unset MAKEFLAGS

	echo "Run ./configure for emu build..."
	./configure \
		--with-platform="emu" \
		--target="${_EMU_ARCH}" \
		--enable-grub-emu-usb=no \
		--enable-grub-emu-sdl=no \
		--disable-grub-emu-pci \
		"${_configure_options[@]}"

	echo "Run make for emu build..."
	make
}

build() {
	cd "${srcdir}/grub/"

	echo "Build grub bios stuff..."
	_build_grub-common_and_bios

	echo "Build grub ${_EFI_ARCH} efi stuff..."
	_build_grub-efi

	if [[ "${CARCH}" == "x86_64" ]] && [[ "${_IA32_EFI_IN_ARCH_X64}" == "1" ]]; then
		echo "Build grub i386 efi stuff..."
		_EFI_ARCH="i386" _build_grub-efi
	fi

	if [[ "${_GRUB_EMU_BUILD}" == "1" ]]; then
		echo "Build grub emu stuff..."
		_build_grub-emu
	fi
}

_package_grub-common_and_bios() {
	cd "${srcdir}/grub-bios/"

	echo "Run make install for bios build..."
	make DESTDIR="${pkgdir}/" bashcompletiondir="/usr/share/bash-completion/completions" install

	echo "Remove gdb debugging related files for bios build..."
	rm -f "${pkgdir}/usr/lib/grub/i386-pc"/*.module || true
	rm -f "${pkgdir}/usr/lib/grub/i386-pc"/*.image || true
	rm -f "${pkgdir}/usr/lib/grub/i386-pc"/{kernel.exec,gdb_grub,gmodule.pl} || true

	echo "Install /etc/default/grub (used by grub-mkconfig)..."
	install -D -m0644 "${srcdir}/grub.default" "${pkgdir}/etc/default/grub"
	install -D -m0644 "${srcdir}/grub.default.66" "${pkgdir}/etc/default/grub.66"
	install -D -m0644 "${srcdir}/grub.default.run" "${pkgdir}/etc/default/grub.run"
}

_package_grub-efi() {
	cd "${srcdir}/grub-efi-${_EFI_ARCH}/"

	echo "Run make install for ${_EFI_ARCH} efi build..."
	make DESTDIR="${pkgdir}/" bashcompletiondir="/usr/share/bash-completion/completions" install

	echo "Remove gdb debugging related files for ${_EFI_ARCH} efi build..."
	rm -f "${pkgdir}/usr/lib/grub/${_EFI_ARCH}-efi"/*.module || true
	rm -f "${pkgdir}/usr/lib/grub/${_EFI_ARCH}-efi"/*.image || true
	rm -f "${pkgdir}/usr/lib/grub/${_EFI_ARCH}-efi"/{kernel.exec,gdb_grub,gmodule.pl} || true

	sed -e "s/%PKGVER%/${epoch}:${pkgver}-${pkgrel}/" < "${srcdir}/sbat.csv" > "${pkgdir}/usr/share/grub/sbat.csv"
}

_package_grub-emu() {
	cd "${srcdir}/grub-emu/"

	echo "Run make install for emu build..."
	make DESTDIR="${pkgdir}/" bashcompletiondir="/usr/share/bash-completion/completions" install

	echo "Remove gdb debugging related files for emu build..."
	rm -f "${pkgdir}/usr/lib/grub/${_EMU_ARCH}-emu"/*.module || true
	rm -f "${pkgdir}/usr/lib/grub/${_EMU_ARCH}-emu"/*.image || true
	rm -f "${pkgdir}/usr/lib/grub/${_EMU_ARCH}-emu"/{kernel.exec,gdb_grub,gmodule.pl} || true
}

package() {
	cd "${srcdir}/grub/"

	echo "Package grub ${_EFI_ARCH} efi stuff..."
	_package_grub-efi

	if [[ "${CARCH}" == "x86_64" ]] && [[ "${_IA32_EFI_IN_ARCH_X64}" == "1" ]]; then
		echo "Package grub i386 efi stuff..."
		_EFI_ARCH="i386" _package_grub-efi
	fi

	if [[ "${_GRUB_EMU_BUILD}" == "1" ]]; then
		echo "Package grub emu stuff..."
		_package_grub-emu
	fi

	echo "Package grub bios stuff..."
	_package_grub-common_and_bios
}

#---- arch license gpg-key & sha256sums ----

arch=(x86_64)

license=('GPL-3.0-or-later')

validpgpkeys=('E53D497F3FA42AD8C9B4D1E835A93B74E82E4209'  # Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
              'BE5C23209ACDDACEB20DB0A28C8189F1988C2166'  # Daniel Kiper <dkiper@net-space.pl>
              '95D2E9AB8740D8046387FD151A09227B1F435A33') # Paul Hardy <unifoundry@unifoundry.com>

sha256sums=(SKIP
	SKIP
	88e00954b10528407e62e97ce6eaa88c847ebfd9a464cafde6bf55c7e4eeed54  # unifont-15.1.04.bdf.gz
	eb6d1b8b3522891530d53536698f40d4a187771318ec207cacf09696b58e66ce  # unifont-15.1.04.bdf.gz.sig
	5dee6628c48eef79812bb9e86ee772068d85e7fcebbd2b2b8d1e19d24eda9dab  # 0001-00_header-add-GRUB_COLOR_-variables.patch
	8488aec30a93e8fe66c23ef8c23aefda39c38389530e9e73ba3fbcc8315d244d  # 0002-10_linux-detect-archlinux-initramfs.patch
	b5d9fcd62ffb3c3950fdeb7089ec2dc2294ac52e9861980ad90a437dedbd3d47  # 0003-support-dropins-for-default-configuration.patch
	83f99850b6c751d0a7bd3e6b9f1808a0c05962cdd1cd8f57cbbd63f1a3379c96  # grub.default
	83f99850b6c751d0a7bd3e6b9f1808a0c05962cdd1cd8f57cbbd63f1a3379c96  # grub.default.run
	adad61d98de32e241a1cf55a166699de449533fa16e15e97a326515f80639ef7  # grub.default.66
	f34c2b0aa2ed4ab9c7e7bcab5197470c30fedc6c2148f337839dd24bceae35fd) # sbat.csv

# Note to packager: 
#ls -l *pkg.tar.lz 
#echo "you must rename this package to meet SF naming before you move to the repo"
#mv $(ls -l $pkgname*pkg.tar.lz) $pkgname-$epoch_$pkgver-$pkgrel-$arch.pkg.tar.lz >pkg-mv.log

##  b7ea9d6bd75040af69c380a6ff1b185047475191bcf920ffd03f3ec5a86deecd  grub-2_2.12-01-x86_64.pkg.tar.lz