# Copyright 1999-2004 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/libtool.eclass,v 1.24 2004/01/02 21:54:28 azarah Exp $
#
# Author: Martin Schlemmer <azarah@gentoo.org>
#
# This eclass patches ltmain.sh distributed with libtoolized packages with the
# relink and portage patch among others

ECLASS="libtool"
INHERITED="${INHERITED} ${ECLASS}"

newdepend "!bootstrap? ( sys-devel/libtool )"

DESCRIPTION="Based on the ${ECLASS} eclass"

ELIBTOOL_VERSION="2.0.1"


ELT_PATCH_DIR="${PORTDIR}/eclass/ELT-patches"
ELT_APPLIED_PATCHES=

#
# Returns all the directories containing ltmain.sh
#
ELT_find_ltmain_sh() {
	local x=
	local dirlist=

    for x in $(find "${S}" -name 'ltmain.sh')
    do
        dirlist="${dirlist} ${x%/*}"
    done

    echo "${dirlist}"
}

#
# See if we can apply $2 on $1, and if so, do it
#
ELT_try_and_apply_patch() {
	local ret=0
	local patch="$2"

	# We only support patchlevel of 0 - why worry if its static patches?
	if patch -p0 --dry-run $1 < ${patch} &>${T}/elibtool.log
	then
		einfo "  Applying $(basename "$(dirname "${patch}")")-${patch##*/}.patch..."
		patch -p0 $1 < ${patch} &>${T}/elibtool.log
		ret=$?
		export ELT_APPLIED_PATCHES="${ELT_APPLIED_PATCHES} ${patch##*/}"
	else
		ret=1
	fi

	return ${ret}
}

#
# Run through the patches in $2 and see if any
# apply to $1 ...
#
ELT_walk_patches() {
	local x=
	local y=
	local ret=1
	local patch_dir=

	if [ -n "$2" ]
	then
		if [ -d "${ELT_PATCH_DIR}/$2" ]
		then
			patch_dir="${ELT_PATCH_DIR}/$2"
		else
			return ${ret}
		fi
		
		for x in $(ls -d "${patch_dir}"/* 2>/dev/null)
		do
			if [ -n "${x}" -a -f "${x}" ]
			then
				# For --remove-internal-dep ...
				if [ -n "$3" ]
				then
					# For replace @REM_INT_DEP@ with what was passed
					# to --remove-internal-dep
					sed -e "s|@REM_INT_DEP@|$3|g" ${x} > \
						${T}/$$.rem_int_deps.patch
					
					x="${T}/$$.rem_int_deps.patch"
				fi
			
				if ELT_try_and_apply_patch "$1" "${x}"
				then
					ret=0
					break
				fi
			fi
		done
	fi

	return ${ret}
}

elibtoolize() {
	local x=
	local y=
	local do_portage="no"
	local do_reversedeps="no"
	local do_only_patches="no"
	local deptoremove=
	local my_dirlist=
	local elt_patches="portage relink sed test tmp"

	my_dirlist="$(ELT_find_ltmain_sh)"
	
	for x in $*
	do
		case "${x}" in
			"--portage")
				# Only apply portage patch, and don't
				# 'libtoolize --copy --force' if all patches fail.
				do_portage="yes"
				;;
			"--reverse-deps")
				# Apply the reverse-deps patch
				# http://bugzilla.gnome.org/show_bug.cgi?id=75635
				do_reversedeps="yes"
				elt_patches="${elt_patches} fix-relink"
				;;
			"--patch-only")
				# Do not run libtoolize if none of the patches apply ..
				do_only_patches="yes"
				;;
			"^--remove-internal-dep="*)
				# We will replace @REM_INT_DEP@ with what is needed
				# in ELT_walk_patches() ...
				deptoremove="$(echo "${x}" | sed -e 's|--remove-internal-dep=||')"

				# Add the patch for this ...
				[ -n "${deptoremove}" ] && elt_patches="${elt_patches} rem-int-dep"
				;;
			"--shallow")
				# Only patch the ltmain.sh in ${S}
				if [ -f "${S}/ltmain.sh" ]
				then
					my_dirlist="${S}"
				else
					my_dirlist=
				fi
				;;
		esac
	done

	for x in ${my_dirlist}
	do
		local tmp="$(echo "${x}" | sed -e "s|${S}||")"
		export ELT_APPLIED_PATCHES=
		
		cd ${x}
		einfo "Patching \${S}$(echo "/${tmp}/ltmain.sh" | sed -e 's|//|/|g')..."

		for y in ${elt_patches}
		do
			local ret=0

			case "${y}" in
				"rem-int-dep")
					ELT_walk_patches "${x}/ltmain.sh" "${y}" "${deptoremove}"
					ret=$?
					;;
				"fix-relink")
					# Do not apply if we do not have the relink patch applied ...
					if [ -n "$(grep 'inst_prefix_dir' "${x}/ltmain.sh")" ]
					then
						ELT_walk_patches "${x}/ltmain.sh" "${y}"
						ret=$?
					fi
					;;
				*)
					ELT_walk_patches "${x}/ltmain.sh" "${y}"
					ret=$?
					;;
			esac
			
			if [ "${ret}" -ne 0 ]
			then
				case ${y} in
					"relink")
						# Critical patch, but could be applied ...
						if [ -z "$(grep 'inst_prefix_dir' "${x}/ltmain.sh")" ]
						then
							ewarn "  Could not apply relink.patch!"
						fi
						;;
					"portage")
						# Critical patch - for this one we abort, as it can really
						# cause breakage without it applied!
						if [ "${do_portage}" = "yes" ]
						then
							# Stupid test to see if its already applied ...
							if [ -z "$(grep 'We do not want portage' "${x}/ltmain.sh")" ]
							then
								echo
								eerror "Portage patch requested, but failed to apply!"
								die "Portage patch requested, but failed to apply!"
							fi
						else
							ewarn "  Could not apply portage.patch!"
							ewarn "  Please verify that it is not needed."
						fi
						;;
				esac
			fi

			if [ -z "${ELT_APPLIED_PATCHES}" ]
			then
				if [ "${do_portage}" = "no" -a \
				     "${do_reversedeps}" = "no" -a \
					 "${do_only_patches}" = "no" -a \
				     "${deptoremove}" = "" ]
				then
					# Sometimes ltmain.sh is in a subdirectory ...
					if [ ! -f ${x}/configure.in -a ! -f ${x}/configure.ac ]
					then
						if [ -f ${x}/../configure.in -o -f ${x}/../configure.ac ]
						then
							cd ${x}/../
						fi
					fi

					if which libtoolize &>/dev/null
					then
						ewarn "Cannot apply any patch, running libtoolize..."
						libtoolize --copy --force
					fi
					cd ${x}
					break
				fi
			fi
		done
	done

	if [ -f libtool ]
	then
		rm -f libtool
	fi

	# We need to change the pwd back to $S, as we may be called in
	# src_compile()
	cd ${S}
}