# Copyright 1999-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/libtool.eclass,v 1.62 2005/12/07 22:50:05 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


# 2004.09.25 rac
# i have verified that at least one package can use this eclass and
# build properly even without libtool installed yet, probably using
# the files in the distribution.  eliminating this dependency fixes
# bug 65209, which is a showstopper for people doing installs using
# stageballs <3.  if anybody decides to revert this, please attempt
# to find an alternate way of resolving that bug at the same time.

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

ELIBTOOL_VERSION="2.0.2"

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

#
# 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 file=$1
	local patch=$2

	# We only support patchlevel of 0 - why worry if its static patches?
	if patch -p0 --dry-run "${file}" "${patch}" &> "${T}/elibtool.log" ; then
		einfo "  Applying $(basename "$(dirname "${patch}")")-${patch##*/}.patch ..."
		patch -p0 -g0 --no-backup-if-mismatch "${file}" "${patch}" \
			&> "${T}/elibtool.log"
		ret=$?
		export ELT_APPLIED_PATCHES="${ELT_APPLIED_PATCHES} ${patch##*/}"
	else
		ret=1
	fi

	return "${ret}"
}

#
# Get string version of ltmain.sh or ltconfig (passed as $1)
#
ELT_libtool_version() {
	local ltmain_sh=$1
	local version=

	version=$(eval $(grep -e '^[[:space:]]*VERSION=' "${ltmain_sh}"); \
	                 echo "${VERSION}")
	[[ -z ${version} ]] && version="0"

	echo "${version}"
}

#
# Run through the patches in $2 and see if any
# apply to $1 ...
#
ELT_walk_patches() {
	local x=
	local y=
	local ret=1
	local file=$1
	local patch_set=$2
	local patch_dir=
	local rem_int_dep=$3
	local version=
	local ltmain_sh=$1

	[[ ${file} == *"/configure" ]] && ltmain_sh=${ELT_LTMAIN_SH}
	version=$(ELT_libtool_version "${ltmain_sh}")

	if [[ -n ${patch_set} ]] ; then
		if [[ -d ${ELT_PATCH_DIR}/${patch_set} ]] ; then
			patch_dir="${ELT_PATCH_DIR}/${patch_set}"
		else
			return "${ret}"
		fi

		if [[ ${version} == "0" ]] ; then
			eerror "Could not get VERSION for ${file##*/}!"
			die "Could not get VERSION for ${file##*/}!"
		fi

		# Go through the patches in reverse order (large to small)
		for x in $(ls -d "${patch_dir}"/* 2> /dev/null | grep -v 'CVS' | sort -r) ; do
			if [[ -n ${x} && -f ${x} ]] ; then
				local ltver=$(VER_to_int "${version}")
				local ptver=$(VER_to_int "${x##*/}")

				# If libtool version smaller than patch version, skip patch.
				[[ ${ltver} -lt ${ptver} ]] && continue
				# For --remove-internal-dep ...
				if [[ -n ${rem_int_dep} ]] ; then
					# For replace @REM_INT_DEP@ with what was passed
					# to --remove-internal-dep
					sed -e "s|@REM_INT_DEP@|${rem_int_dep}|g" ${x} > \
						"${T}/$$.rem_int_deps.patch"

					x="${T}/$$.rem_int_deps.patch"
				fi

				if ELT_try_and_apply_patch "${file}" "${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 do_uclibc="yes"
	local deptoremove=
	local my_dirlist=
	local elt_patches="portage relink max_cmd_len sed test tmp"
	local start_dir=${PWD}

	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
				;;
			"--no-uclibc")
				do_uclibc="no"
				;;
			*)
				eerror "Invalid elibtoolize option: ${x}"
				die "elibtoolize called with ${x} ??"
		esac
	done

	[[ ${do_uclibc} == "yes" ]] && \
		elt_patches="${elt_patches} uclibc-conf uclibc-ltconf"

	[[ ${CHOST} == *"-freebsd"* ]] && \
		elt_patches="${elt_patches} fbsd-conf"

	if useq ppc-macos ; then
		local opts
		[[ -f Makefile.am ]] && opts="--automake"
		glibtoolize --copy --force ${opts}

		elt_patches="${elt_patches} darwin-ltconf darwin-ltmain"
	fi

	for x in ${my_dirlist} ; do
		local tmp=$(echo "${x}" | sed -e "s|${WORKDIR}||")
		export ELT_APPLIED_PATCHES=
		export ELT_LTMAIN_SH="${x}/ltmain.sh"

		[[ -f ${x}/.elibtoolized ]] && continue

		cd ${x}
		einfo "Running elibtoolize in: $(echo "/${tmp}" | sed -e 's|//|/|g; s|^/||')"

		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
					;;
				"max_cmd_len")
					# Do not apply if $max_cmd_len is not used ...
					if [[ -n $(grep 'max_cmd_len' "${x}/ltmain.sh") ]] ; then
						ELT_walk_patches "${x}/ltmain.sh" "${y}"
						ret=$?
					fi
					;;
				"uclibc-conf")
					if [[ -e ${x}/configure && \
					      -n $(grep 'Transform linux' "${x}/configure") ]] ; then
						ELT_walk_patches "${x}/configure" "${y}"
						ret=$?
					# ltmain.sh and co might be in a subdirectory ...
					elif [[ ! -e ${x}/configure && -e ${x}/../configure && \
					        -n $(grep 'Transform linux' "${x}/../configure") ]] ; then
						ELT_walk_patches "${x}/../configure" "${y}"
						ret=$?
					fi
					;;
				"uclibc-ltconf")
					# Newer libtoolize clears ltconfig, as not used anymore
					if [[ -s ${x}/ltconfig ]] ; then
						ELT_walk_patches "${x}/ltconfig" "${y}"
						ret=$?
					fi
					;;
				"fbsd-conf")
					if [[ -e ${x}/configure && \
					      -n $(grep 'version_type=freebsd-' "${x}/configure") ]] ; then
						ELT_walk_patches "${x}/configure" "${y}"
						ret=$?
					# ltmain.sh and co might be in a subdirectory ...
					elif [[ ! -e ${x}/configure && -e ${x}/../configure && \
					        -n $(grep 'version_type=freebsd-' "${x}/../configure") ]] ; then
						ELT_walk_patches "${x}/../configure" "${y}"
						ret=$?
					fi
					;;
				"darwin-ltconf")
					# Newer libtoolize clears ltconfig, as not used anymore
					if [[ -s ${x}/ltconfig ]] ; then
						ELT_walk_patches "${x}/ltconfig" "${y}"
						ret=$?
					fi
					;;
				*)
					ELT_walk_patches "${x}/ltmain.sh" "${y}"
					ret=$?
					;;
			esac

			if [[ ${ret} -ne 0 ]] ; then
				case ${y} in
					"relink")
						local version=$(ELT_libtool_version "${x}/ltmain.sh")
						# Critical patch, but could be applied ...
						# FIXME:  Still need a patch for ltmain.sh > 1.4.0
						if [[ -z $(grep 'inst_prefix_dir' "${x}/ltmain.sh") && \
						      $(VER_to_int "${version}") -ge $(VER_to_int "1.4.0") ]] ; 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
							if [[ -n $(grep 'We do not want portage' "${x}/ltmain.sh") ]] ; then
							#	ewarn "  Portage patch seems to be already applied."
							#	ewarn "  Please verify that it is not needed."
								:
							else
							    local version=$( \
									eval $(grep -e '^[[:space:]]*VERSION=' "${x}/ltmain.sh"); \
									echo "${VERSION}")

								echo
								eerror "Portage patch failed to apply (ltmain.sh version ${version})!"
								die "Portage patch failed to apply!"
							fi
							# We do not want to run libtoolize ...
							ELT_APPLIED_PATCHES="portage"
						fi
						;;
					"uclibc-"*)
						[[ ${CHOST} == *"-uclibc" ]] && \
							ewarn "  uClibc patch set '${y}' failed to apply!"
						;;
					"fbsd-"*)
						if [[ ${CHOST} == *"-freebsd"* ]] ; then
							if [[ -z $(grep 'Handle Gentoo/FreeBSD as it was Linux' "${x}/configure") ]]; then
								eerror "  FreeBSD patch set '${y}' failed to apply!"
								die "FreeBSD patch set '${y}' failed to apply!"
							fi
						fi
						;;
					"darwin-"*)
						useq ppc-macos && \
							ewarn "  Darwin patch set '${y}' failed to apply!"
						;;
				esac
			fi
		done

		if [[ -z ${ELT_APPLIED_PATCHES} ]] ; then
			if [[ ${do_portage} == "no" && \
				  ${do_reversedeps} == "no" && \
				  ${do_only_patches} == "no" && \
				  ${deptoremove} == "" ]]
			then
				ewarn "Cannot apply any patches, please file a bug about this"
				break

				# Sometimes ltmain.sh is in a subdirectory ...
				if [[ ! -f ${x}/configure.in && ! -f ${x}/configure.ac ]] ; then
					if [[ -f ${x}/../configure.in || -f ${x}/../configure.ac ]] ; then
						cd "${x}"/../
					fi
				fi

				if type -p libtoolize &> /dev/null ; then
					ewarn "Cannot apply any patches, running libtoolize..."
					libtoolize --copy --force
				fi
				cd "${x}"
				break
			fi
		fi

		[[ -f ${x}/libtool ]] && rm -f "${x}/libtool"

		touch "${x}/.elibtoolized"
	done

	cd "${start_dir}"
}

uclibctoolize() {
	ewarn "uclibctoolize() is depreciated, please just use elibtoolize()!"
	elibtoolize
}

darwintoolize() {
	ewarn "darwintoolize() is depreciated, please just use elibtoolize()!"
	elibtoolize
}

# char *VER_major(string)
#
#    Return the Major (X of X.Y.Z) version
#
VER_major() {
	[[ -z $1 ]] && return 1

	local VER=$@
	echo "${VER%%[^[:digit:]]*}"
}

# char *VER_minor(string)
#
#    Return the Minor (Y of X.Y.Z) version
#
VER_minor() {
	[[ -z $1 ]] && return 1

	local VER=$@
	VER=${VER#*.}
	echo "${VER%%[^[:digit:]]*}"
}

# char *VER_micro(string)
#
#    Return the Micro (Z of X.Y.Z) version.
#
VER_micro() {
	[[ -z $1 ]] && return 1

	local VER=$@
	VER=${VER#*.*.}
	echo "${VER%%[^[:digit:]]*}"
}

# int VER_to_int(string)
#
#    Convert a string type version (2.4.0) to an int (132096)
#    for easy compairing or versions ...
#
VER_to_int() {
	[[ -z $1 ]] && return 1

	local VER_MAJOR=$(VER_major "$1")
	local VER_MINOR=$(VER_minor "$1")
	local VER_MICRO=$(VER_micro "$1")
	local VER_int=$(( VER_MAJOR * 65536 + VER_MINOR * 256 + VER_MICRO ))

	# We make version 1.0.0 the minimum version we will handle as
	# a sanity check ... if its less, we fail ...
	if [[ ${VER_int} -ge 65536 ]] ; then
		echo "${VER_int}"
		return 0
	fi

	echo 1
	return 1
}