Optimize version lookup a bit, and handle the case where $0 is not a full path #385201 by Florian Philipp.

(Portage version: 2.2.0_alpha59/cvs/Linux x86_64)

3 files changed, 229 insertions, 1 deletions

diff --git a/sys-devel/automake-wrapper/ChangeLog b/sys-devel/automake-wrapper/ChangeLog
index 33e88dec1a1b..dbe385bc9853 100644
--- a/sys-devel/automake-wrapper/ChangeLog
+++ b/sys-devel/automake-wrapper/ChangeLog
@@ -1,6 +1,13 @@
 # ChangeLog for sys-devel/automake-wrapper
 # Copyright 1999-2011 Gentoo Foundation; Distributed under the GPL v2
-# $Header: /var/cvsroot/gentoo-x86/sys-devel/automake-wrapper/ChangeLog,v 1.47 2011/02/06 11:29:37 leio Exp $
+# $Header: /var/cvsroot/gentoo-x86/sys-devel/automake-wrapper/ChangeLog,v 1.48 2011/10/02 19:51:17 vapier Exp $
+
+*automake-wrapper-6 (02 Oct 2011)
+
+  02 Oct 2011; Mike Frysinger <vapier@gentoo.org> +automake-wrapper-6.ebuild,
+  +files/am-wrapper-6.sh:
+  Optimize version lookup a bit, and handle the case where $0 is not a full
+  path #385201 by Florian Philipp.
 
   06 Feb 2011; Mart Raudsepp <leio@gentoo.org> automake-wrapper-3-r1.ebuild:
   Drop to ~mips
diff --git a/sys-devel/automake-wrapper/automake-wrapper-6.ebuild b/sys-devel/automake-wrapper/automake-wrapper-6.ebuild
new file mode 100644
index 000000000000..c712eedfd96c
--- /dev/null
+++ b/sys-devel/automake-wrapper/automake-wrapper-6.ebuild
@@ -0,0 +1,37 @@
+# Copyright 1999-2011 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/sys-devel/automake-wrapper/automake-wrapper-6.ebuild,v 1.1 2011/10/02 19:51:17 vapier Exp $
+
+inherit multilib
+
+DESCRIPTION="wrapper for automake to manage multiple automake versions"
+HOMEPAGE="http://www.gentoo.org/"
+SRC_URI=""
+
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~ppc-aix ~sparc-fbsd ~x86-fbsd ~x64-freebsd ~x86-freebsd ~hppa-hpux ~ia64-hpux ~x86-interix ~amd64-linux ~ia64-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~m68k-mint ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
+IUSE=""
+
+S=${WORKDIR}
+
+src_unpack() {
+	cp "${FILESDIR}"/am-wrapper-${PV}.sh "${T}"/
+	# usr/bin/aclocal: bad substitution -> /bin/sh != POSIX shell
+	if use prefix ; then
+		sed -i -e '1c\#!'"${EPREFIX}"'/bin/sh' "${T}"/am-wrapper-${PV}.sh || die
+	fi
+}
+
+src_install() {
+	exeinto /usr/$(get_libdir)/misc
+	newexe "${T}"/am-wrapper-${PV}.sh am-wrapper.sh || die
+
+	keepdir /usr/share/aclocal
+
+	dodir /usr/bin
+	local x=
+	for x in aclocal automake ; do
+		dosym ../$(get_libdir)/misc/am-wrapper.sh /usr/bin/${x}
+	done
+}
diff --git a/sys-devel/automake-wrapper/files/am-wrapper-6.sh b/sys-devel/automake-wrapper/files/am-wrapper-6.sh
new file mode 100755
index 000000000000..f3704d5d2f52
--- /dev/null
+++ b/sys-devel/automake-wrapper/files/am-wrapper-6.sh
@@ -0,0 +1,184 @@
+#!/bin/sh
+# Copyright 1999-2011 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/sys-devel/automake-wrapper/files/am-wrapper-6.sh,v 1.1 2011/10/02 19:51:17 vapier Exp $
+
+# Based on the am-wrapper.pl script provided by MandrakeSoft
+# Rewritten in bash by Gregorio Guidi
+#
+# Executes the correct automake version.
+#
+# - defaults to newest version available (hopefully automake-1.10)
+# - runs automake-1.9 if:
+#   - envvar WANT_AUTOMAKE is set to `1.9'
+#     -or-
+#   - `Makefile.in' was generated by automake-1.9
+#     -or-
+#   - 'aclocal.m4' contain AM_AUTOMAKE_VERSION, specifying the use of 1.9
+# - runs automake-1.8 if:
+#   - envvar WANT_AUTOMAKE is set to `1.8'
+#     -or-
+#   - `Makefile.in' was generated by automake-1.8
+#     -or-
+#   - 'aclocal.m4' contain AM_AUTOMAKE_VERSION, specifying the use of 1.8
+# - runs automake-1.7 if:
+#   - envvar WANT_AUTOMAKE is set to `1.7'
+#     -or-
+#   - `Makefile.in' was generated by automake-1.7
+#     -or-
+#   - 'aclocal.m4' contain AM_AUTOMAKE_VERSION, specifying the use of 1.7
+# - runs automake-1.6 if:
+#   - envvar WANT_AUTOMAKE is set to `1.6'
+#     -or-
+#   - `Makefile.in'
+#     -or-
+#   - 'aclocal.m4' contain AM_AUTOMAKE_VERSION, specifying the use of 1.6
+# - runs automake-1.5 if:
+#   - envvar WANT_AUTOMAKE is set to `1.5'
+#     -or-
+#   - `Makefile.in' was generated by automake-1.5
+#     -or-
+#   - 'aclocal.m4' contain AM_AUTOMAKE_VERSION, specifying the use of 1.5
+# - runs automake-1.4 if:
+#   - envvar WANT_AUTOMAKE is set to `1.4'
+#     -or-
+#   - `Makefile.in' was generated by automake-1.4
+#     -or-
+#   - 'aclocal.m4' contain AM_AUTOMAKE_VERSION, specifying the use of 1.4
+
+warn() { printf 'am-wrapper: %s: %b\n' "${argv0}" "$*" 1>&2; }
+err() { warn "$@"; exit 1; }
+unset IFS
+which() {
+	local p
+	IFS=: # we don't use IFS anywhere, so don't bother saving/restoring
+	for p in ${PATH} ; do
+		p="${p}/$1"
+		[ -e "${p}" ] && echo "${p}" && return 0
+	done
+	unset IFS
+	return 1
+}
+
+#
+# Sanitize argv[0] since it isn't always a full path #385201
+#
+argv0=${0##*/}
+case ${0} in
+	${argv0})
+		# find it in PATH
+		if ! full_argv0=$(which "${argv0}") ; then
+			err "could not locate ${argv0}; file a bug"
+		fi
+		;;
+	*)
+		# re-use full/relative paths
+		full_argv0=$0
+		;;
+esac
+
+if [ "${argv0}" = "am-wrapper.sh" ] ; then
+	err "Don't call this script directly"
+fi
+
+vers="1.11 1.10 1.9 1.8 1.7 1.6 1.5 1.4"
+
+#
+# Export the proper variable/versions and try to locate a usuable
+# default (newer versions are preferred)
+#
+binary=""
+for v in ${vers} ; do
+	if [ -z "${binary}" ] && [ -x "${full_argv0}-${v}" ] ; then
+		binary="${full_argv0}-${v}"
+		break
+	fi
+done
+if [ -z "${binary}" ] ; then
+	err "Unable to locate any usuable version of automake.\n" \
+	    "\tI tried these versions: ${vers}\n" \
+	    "\tWith a base name of '${full_argv0}'."
+fi
+
+#
+# Check the WANT_AUTOMAKE setting.  We accept a whitespace delimited
+# list of automake versions.
+#
+if [ -n "${WANT_AUTOMAKE}" ] ; then
+	for v in ${vers} x ; do
+		if [ "${v}" = "x" ] ; then
+			warn "warning: invalid WANT_AUTOMAKE '${WANT_AUTOMAKE}'; ignoring."
+			unset WANT_AUTOMAKE
+			break
+		fi
+
+		for wx in ${WANT_AUTOMAKE} ; do
+			if [ "${wx}" = "${v}" ] ; then
+				binary="${full_argv0}-${v}"
+				v="x"
+			fi
+		done
+		[ "${v}" = "x" ] && break
+	done
+fi
+
+#
+# autodetect helpers
+#
+do_awk() {
+	local file=$1 ; shift
+	local arg=$1 ; shift
+	echo $(gawk "{ if (match(\$0, \"$*\", res)) { print res[${arg}]; exit } }" ${file})
+}
+
+#
+# autodetect routine
+#
+if [ -z "${WANT_AUTOMAKE}" ] ; then
+	if [ -r "Makefile.in" ] ; then
+		confversion_mf=$(do_awk Makefile.in 2 "^# Makefile.in generated (automatically )?by automake ([0-9].[0-9]+)")
+	fi
+	if [ -r "aclocal.m4" ] ; then
+		confversion_ac=$(do_awk aclocal.m4 1 'generated automatically by aclocal ([0-9].[0-9]+)')
+		confversion_am=$(do_awk aclocal.m4 1 '[[:space:]]*\\[?AM_AUTOMAKE_VERSION\\(\\[?([0-9].[0-9]+)[^)]*\\]?\\)')
+	fi
+
+	for v in ${vers} ; do
+		if [ "${confversion_mf}" = "${v}" ] || \
+		   [ "${confversion_ac}" = "${v}" ] || \
+		   [ "${confversion_am}" = "${v}" ]
+		then
+			binary="${full_argv0}-${v}"
+			break
+		fi
+	done
+fi
+
+if [ "${WANT_AMWRAPPER_DEBUG}" ] ; then
+	if [ "${WANT_AUTOMAKE}" ] ; then
+		warn "DEBUG: WANT_AUTOMAKE is set to ${WANT_AUTOMAKE}"
+	fi
+	warn "DEBUG: will execute <$binary>"
+fi
+
+#
+# for further consistency
+#
+for v in ${vers} ; do
+	if [ "${binary}" = "${full_argv0}-${v}" ] ; then
+		export WANT_AUTOMAKE="${v}"
+		break
+	fi
+done
+
+#
+# Now try to run the binary
+#
+if [ ! -x "${binary}" ] ; then
+	err "$binary is missing or not executable.\n" \
+	    "\tPlease try emerging the correct version of automake."
+fi
+
+exec "$binary" "$@"
+
+err "was unable to exec $binary !?"