# --- T2-COPYRIGHT-BEGIN ---
# t2/package/*/dietlibc/parse-config-9
# Copyright (C) 2004 - 2025 The T2 SDE Project
# Copyright (C) 1998 - 2004 ROCK Linux Project
# SPDX-License-Identifier: GPL-2.0
# --- T2-COPYRIGHT-END ---

function set_wrapper_and_misc () {
	export DIETHOME=$root/usr/dietlibc
	if ! atstage native || [ "$SDECFG_LIBC" != "dietlibc" ]; then
		var_append CC_WRAPPER_OTHERS ':' $dietbin
	fi

	if [ "$diet_dynamic_static" == "static"  ]; then
	  var_append confopt ' ' '--disable-shared --without-shared'
	  var_append GCC_WRAPPER_INSERT ' ' -c?:-static
	fi
	var_append GCC_WRAPPER_INSERT ' ' -D__dietlibc__
}

function add_lib () {
	var_append CC_WRAPPER_APPEND ' ' -c?:$1
}

function remove_lib () {
	var_append CC_WRAPPER_REMOVE ' ' $1
}

function pkg_dietlibc_rebuild () {
	patchfiles=
	. $base/package/*/dietlibc/parse-config-9
	var_append patchfiles ' ' `ls $confdir/*.patch.dietlibc.2nd 2>/dev/null`
	apply_patchfiles

	# TODO: re-schedule a clean rebuild
	rm -f config.cache
	eval_config_command $confopt $confopt
	eval $MAKE clean
	eval $MAKE $makeopt
	eval $MAKE $makeinstopt
}


# decide wether to compile the package with dietlibc or not
if [ "$SDECFG_LIBC" = "dietlibc" -o "$pkg" = "dietlibc" ]; then
	pkg_dietlibc_useit=1
else
	x="${pkg//-/_}" x="${x//+/_}"
	eval "pkg_dietlibc_useit=\$SDECFG_DIETLIBC_${x}"
fi

[ "$pkg_dietlibc_useit" != 1 ] && pkg_dietlibc_useit=0

[ "$pkg_dietlibc_useit" = 1 -a $pkg = gcc ] &&
	var_append confopt ' ' --disable-threads

# never use dietlibc in stage 0
atstage toolchain && pkg_dietlibc_useit=0

# for some package only build with dielitbc, if this is the second run
if [ "$SDECFG_LIBC" != "dietlibc" -a "$pkg_dietlibc_useit" = 1 ]; then
  case $pkg in
	udev)
		if [ "$pkg_udev_this_is_the_second_run" != 1 ]; then
			echo_status "First pass, linking against system libc"
			pkg_dietlibc_useit=0
			hook_add postmake 7 pkg_dietlibc_rebuild
		else
			echo_status "Second pass, linking against dietlibc"
			rm -vf config.cache
			var_append confopt ' ' --enable-shared=no
			var_remove confopt ' ' --enable-extras
			var_append confopt ' ' --disable-extras
		fi
		;;
  esac
fi

if [ "$pkg_dietlibc_useit" = 1 ]; then
	# If we use something like 'i386-pc-linux-gnu' as architecture name,
	# some programs start using gnu extensions. So we use ...-gnudietlibc
	# instead.
	#
	pkg_dietlibc_orig_target="$arch_target"
	arch_target="${arch_target%-*}-gnudietlibc"
	if atstage native; then
		arch_build="${arch_target}"
	fi

	if [ -d $base/build/$SDECFG_ID/TOOLCHAIN/$toolsdir/diet-bin ]; then
		PATH="$base/build/$SDECFG_ID/TOOLCHAIN/$toolsdir/diet-bin:$PATH"
	fi

	if [ "$SDECFG_DIETLIBC_DYN" = "1" ]
	then dietbin="diet-dyn" ; diet_dynamic_static="dynamic"
	else dietbin="diet" ; diet_dynamic_static="static"; fi

	echo_status "Preparing configuration to build this package with dietlibc ("${diet_dynamic_static}"ally)"

	if atstage native; then
		var_remove CC_WRAPPER_INSERT ' ' -pipe
		var_append CC_WRAPPER_REMOVE ' ' -pipe

		var_remove GCC_WRAPPER_INSERT ' ' -pipe
		var_append GCC_WRAPPER_REMOVE ' ' -pipe

		var_remove KCC_WRAPPER_INSERT ' ' -pipe
		var_append KCC_WRAPPER_REMOVE ' ' -pipe
	fi

	if [ "$GCC_WRAPPER_INSERT" != "${GCC_WRAPPER_INSERT/-fstack-protector}" ]; then
		echo_warning 'Disabling GCC stack-protector for dietlibc-based package.'
		var_remove GCC_WRAPPER_INSERT ' ' -fstack-protector
	fi

	# patch has problems with Plan A patching so we switch with -x 16 to Plan B
	atstage rebuild && var_append patchopt ' ' '-x 16'

	case "$pkg" in
		dietlibc)
			;;

		linux*)
			echo_status "Dietlibc not utilized for this package."
			if atstage native && [ "$diet_dynamic_static" == "static" ]; then
			  var_append GCC_WRAPPER_INSERT ' ' -static
			fi
			;;

		iptables|mmv|grsecurity)
			echo_status "Enabling non-portable GNU features."
			var_append CC_WRAPPER_INSERT ' ' -D_GNU_SOURCE
			set_wrapper_and_misc
			;;

		coreutils|findutils|curl|procps|radiusclient-ng|libpcap|binutils|udhcp|file|libxml|mdadm|lvm2|iputils|bsdiff)
			echo_status "Enabling non-portable BSD features."
			var_append CC_WRAPPER_INSERT ' ' -D_BSD_SOURCE
			set_wrapper_and_misc
			;;

		e2fsprogs|util-linux|ash|irda-utils|ppp|dropbear|nullmailer|traceroute|udev)
			echo_status "Enabling non-portable GNU and BSD features."
			var_append CC_WRAPPER_INSERT ' ' "-D_GNU_SOURCE -D_BSD_SOURCE"
			set_wrapper_and_misc
			;;
		nvi)
			echo_status "Enabling non-portable GNU, BSD features and types."
			var_append CC_WRAPPER_INSERT ' ' "-D_GNU_SOURCE -D_BSD_SOURCE"
			var_append CC_WRAPPER_INSERT ' ' -D__BIT_TYPES_DEFINED__
			set_wrapper_and_misc
			;;
		iproute2)
			echo_status "Setting __GLIBC__=3 to build the package!"
			var_append CC_WRAPPER_INSERT ' ' -D__GLIBC__=3
			set_wrapper_and_misc
			;;
		net-tools)
			echo_status "Enabling non-portable GNU, BSD features and a lot of other tweaks."
			var_append CC_WRAPPER_INSERT ' ' "-D_GNU_SOURCE -D_BSD_SOURCE"
			var_append CC_WRAPPER_INSERT ' ' -D__GLIBC__
			var_append CC_WRAPPER_INSERT ' ' -D_LINUX_IN6_H
			set_wrapper_and_misc
			;;
		#squid)
			#var_append CC_WRAPPER_INSERT ' ' -DHAVE_SYS_TIME_H
			#set_wrapper_and_misc
		#	;;
		*)
			set_wrapper_and_misc
			;;
	esac

	case "$pkg" in
		sed|lilo|findutils|net-tools|dropbear|udev|rng-tools|udhcp|psmisc|bsdiff)
			add_lib "-lcompat"
			;;
		coreutils)
			add_lib "-lcompat"
			var_remove patchfiles ' ' "*acl-xattr.patch"
			;;
		ncurses)
			var_append confopt ' ' \
			  "--without-cxx-binding --without-cxx"
			;;
		pkgconfig)
			var_append confopt ' ' --disable-threads
			;;
		util-linux)
			add_lib "-lrpc -lcompat"
			;;
		dump)
			var_append confopt ' ' --disable-rmt
			;;
		perl)
			add_lib "-lm -lcompat"
			;;
		openssl|gettext)
			remove_lib "-ldl"
			;;
		iptables)
			add_lib "-lrpc"
			remove_lib "-lnsl"
			;;
		gawk)
			[ "$diet_dynamic_static" == "static" ] || add_lib "-ldl"
			;;

		procps)
			if [ "$diet_dynamic_static" == "static"  ]; then
				var_append makeopt ' ' SHARED=0
				var_append makeinstopt ' ' SHARED=0
			fi
			;;
	esac

	var_append patchfiles ' ' `ls $confdir/*.patch.dietlibc 2>/dev/null`
fi

pkg_udev_this_is_the_second_run=1