[COPY] --- T2-COPYRIGHT-BEGIN ---
[COPY] t2/package/*/grub/grub.desc
[COPY] Copyright (C) 2004 - 2025 The T2 SDE Project
[COPY] Copyright (C) 1998 - 2003 ROCK Linux Project
[COPY] SPDX-License-Identifier: GPL-2.0
[COPY] --- T2-COPYRIGHT-END ---

[I] The GRand Unified Bootloader

[T] GNU GRUB is a very powerful boot loader, which can load a wide variety
[T] of free operating systems, as well as proprietary operating systems with
[T] chain-loading. GRUB is designed to address the complexity of booting a
[T] personal computer; both the program and this manual are tightly bound
[T] to that computer platform, although porting to other platforms may be
[T] addressed in the future.
[T]
[T] One of the important features in GRUB is flexibility; GRUB understands
[T] filesystems and kernel executable formats, so you can load an arbitrary
[T] operating system the way you like, without recording the physical position
[T] of your kernel on the disk.
[T]
[T] The T2 GRUB package includes a bootsplash patch, as well as various
[T] accumulated fixes, as well as PXE UNDI network stack support.

[U] http://www.gnu.org/software/grub/grub-legacy.en.html

[A] Erich Stefan Boleyn <erich@uruk.org> {original design}
[A] OKUJI Yoshinori <okuji@kuicr.kyoto-u.ac.jp> {Maintainer}
[M] Rene Rebe <rene@t2-project.org>

[C] base/boot
[F] CROSS DIETLIBC NO-SSP NO-LTO
[R] + x86 x86-64

[L] GPL
[S] Stable
[V] 0.97-os.8

[D] 3065767847 grub-0.97.tar.gz http://alpha.gnu.org/gnu/grub/
[D] 546539329 grub-0.97-os.8.diff.gz http://os.inf.tu-dresden.de/~adam/grub/0.97/

grub_prepatch() {
	local f="`match_source_file -p diff`"
	if [ "$f" ]; then
		$(get_compressor $f) -d < $f | patch -p0
	fi
}

grub_postmake() {
	mkdir -p $root/boot/grub

	trg=${arch_target/-linux-*}
	trg=i386-${trg/i*-/}

	cp -v $root$libdir/grub/$trg/* $root/boot/grub/
	cp docs/menu.lst $root/boot/grub/menu.lst.example
}

grub_build_diskless() {
	counter=1
	var_append confopt ' ' '--enable-diskless --enable-pxe'
	{	echo
		echo "Driver-map for PXE and Etherboot 2nd stage GRUB images:"
		echo "======================================================="
		echo
	} > $root/boot/grub/README.pxe_nb

	# this is to work around very broken Makefiles in due the grub-os patch
	var_append GCC_WRAPPER_INSERT ' ' ' -DCONGESTED=1 -DCONFIG_PCI -DNE_SCAN=0x280,0x300,0x320,0x340 -DWD_DEFAULT_MEM=0xCC000'
	while read drivers
	do
		echo Running "./configure $confopt --enable-${drivers// / --enable-}"
		eval "./configure $confopt --enable-${drivers// / --enable-}"
		echo Running "make -C netboot clean; make"
		make -C netboot clean; make
		{	echo "pxegrub.$counter and nbgrub.$counter:"
			echo "	$drivers"; echo
		} >> $root/boot/grub/README.pxe_nb
		cp stage2/pxegrub $root/boot/grub/pxegrub.$counter
		cp stage2/nbgrub  $root/boot/grub/nbgrub.$counter
		((counter++))
	done < <(
		./configure --help | grep ' driver$' |
		cut -f4- -d- | cut -f1 -d' ' | sort -u |
		paste -d' ' - - - - - - -
	)
}

# for the bootsplash patch
[ "$pkg" = "grub" ] && hook_add preconf 3 "autoreconf -fi"
hook_add prepatch 5 "grub_prepatch"
hook_add postmake 5 "grub_postmake"
hook_add postmake 7 "grub_build_diskless"
hook_add postmake 9 "cp -fv $base/package/*/grub/t2.xpm.gz $root/boot/"

# Every other optimization would cause build errors like
#
# pre_stage2_exec-builtins.o: In function `terminfo_func':
# pre_stage2_exec-builtins.o(.text+0x3b0e): undefined reference to `memcpy'
#
GCC_WRAPPER_INSERT="${GCC_WRAPPER_INSERT/-march=/-mtune=}"
var_append GCC_WRAPPER_APPEND ' ' "-Os -march=i486 -fgnu89-inline"

# gcc-4.6 et al.
var_append GCC_WRAPPER_APPEND ' ' "-fno-strict-aliasing -fno-reorder-functions"

if [ $arch = x86-64 ]; then
	libdir=\$root/\$prefix/lib
	var_insert GCC_WRAPPER_INSERT ' ' -m32
	arch_target="`echo $arch_target | sed -e 's/[-_]*64//' -e 's/x86/i386/'`"
	echo_status "Set arch_target to $arch_target"
	set_confopt
fi