# --- T2-COPYRIGHT-NOTE-BEGIN ---
# T2 SDE: package/*/grub/grub.conf
# Copyright (C) 2004 - 2023 The T2 SDE Project
# Copyright (C) 1998 - 2003 ROCK Linux Project
# 
# This Copyright note is generated by scripts/Create-CopyPatch,
# more information can be found in the files COPYING and README.
# 
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2.
# --- T2-COPYRIGHT-NOTE-END ---

grub_prepatch() {
	local f="`match_source_file -p diff`"
	if [ "$f" ]; then
		$compressor -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