--- /dev/null
+#!/bin/sh
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+# Executes the correct automake version.
+#
+# If WANT_AUTOMAKE is set (can be a whitespace delimited list of versions):
+# - attempt to find an installed version using those
+# - if magic keyword 'latest' is found, pick the latest version that exists
+# - if nothing found, warn, and proceed as if WANT_AUTOMAKE was not set (below)
+# If WANT_AUTOMAKE is not set:
+# - Try to detect the version of automake used to generate things (look at
+# Makefile.in and aclocal.m4 and any other useful file)
+# - If detected version is not found, warn and proceed as if blank slate
+# - Try to locate the latest version of automake that exists and run it
+
+(set -o posix) 2>/dev/null && set -o posix
+
+_stderr() { printf 'am-wrapper: %s: %b\n' "${argv0}" "$*" 1>&2; }
+warn() { _stderr "warning: $*"; }
+err() { _stderr "error: $*"; 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 ! seq 0 0 2>/dev/null 1>&2 ; then #338518
+ seq() {
+ local f l i
+ case $# in
+ 1) f=1 i=1 l=$1;;
+ 2) f=$1 i=1 l=$2;;
+ 3) f=$1 i=$2 l=$3;;
+ esac
+ while :; do
+ [ $l -lt $f -a $i -gt 0 ] && break
+ [ $f -lt $l -a $i -lt 0 ] && break
+ echo $f
+ : $(( f += i ))
+ done
+ return 0
+ }
+fi
+
+#
+# Set up bindings between actual version and WANT_AUTOMAKE;
+# Start with last known versions to speed up lookup process.
+#
+LAST_KNOWN_AUTOMAKE_VER="16"
+vers=$(printf '1.%s ' `seq ${LAST_KNOWN_AUTOMAKE_VER} -1 4`)
+
+#
+# Helper to scan for a usable program based on version.
+#
+binary=
+all_vers=
+find_binary() {
+ local v
+ all_vers="${all_vers} $*" # For error messages.
+ for v ; do
+ if [ -x "${full_argv0}-${v}" ] ; then
+ binary="${full_argv0}-${v}"
+ binary_ver=${v}
+ return 0
+ fi
+ done
+ return 1
+}
+
+#
+# Try and find a usable automake version. First check the WANT_AUTOMAKE
+# setting (whitespace delimited list), then fallback to the latest.
+#
+find_latest() {
+ if ! find_binary ${vers} ; then
+ # Brute force it.
+ find_binary $(printf '1.%s ' `seq 99 -1 ${LAST_KNOWN_AUTOMAKE_VER}`)
+ fi
+}
+for wx in ${WANT_AUTOMAKE:-latest} ; do
+ if [ "${wx}" = "latest" ] ; then
+ find_latest && break
+ else
+ find_binary ${wx} && break
+ fi
+done
+
+if [ -z "${binary}" ] && [ -n "${WANT_AUTOMAKE}" ] ; then
+ warn "could not locate installed version for WANT_AUTOMAKE='${WANT_AUTOMAKE}'; ignoring"
+ unset WANT_AUTOMAKE
+ find_latest
+fi
+
+if [ -z "${binary}" ] ; then
+ err "Unable to locate any usuable version of automake.\n" \
+ "\tI tried these versions:${all_vers}\n" \
+ "\tWith a base name of '${full_argv0}'."
+fi
+
+#
+# autodetect helpers
+#
+do_awk() {
+ local file=$1 ; shift
+ local v=$(awk -v regex="$*" '{
+ if (ret = match($0, regex)) {
+ s = substr($0, ret, RLENGTH)
+ ret = match(s, "[0-9]\\.[0-9]+")
+ print substr(s, ret, RLENGTH)
+ exit
+ }
+ }' "${file}")
+ case " ${auto_vers} " in
+ *" ${v} "*) ;;
+ *) auto_vers="${auto_vers:+${auto_vers} }${v}" ;;
+ esac
+}
+
+#
+# autodetect routine
+#
+if [ -z "${WANT_AUTOMAKE}" ] ; then
+ auto_vers=
+ if [ -r "Makefile.in" ] ; then
+ do_awk Makefile.in '^# Makefile.in generated (automatically )?by automake [0-9]\\.[0-9]+'
+ fi
+ if [ -r "aclocal.m4" ] ; then
+ do_awk aclocal.m4 'generated automatically by aclocal [0-9]\\.[0-9]+'
+ do_awk aclocal.m4 '[[:space:]]*\\[?AM_AUTOMAKE_VERSION\\(\\[?[0-9]\\.[0-9]+[^)]*\\]?\\)'
+ fi
+ # We don't need to set $binary here as it has already been setup for us
+ # earlier to the latest available version.
+ if [ -n "${auto_vers}" ] ; then
+ if ! find_binary ${auto_vers} ; then
+ warn "auto-detected versions not found (${auto_vers}); falling back to latest available"
+ fi
+ fi
+fi
+
+if [ -n "${WANT_AMWRAPPER_DEBUG}" ] ; then
+ if [ -n "${WANT_AUTOMAKE}" ] ; then
+ warn "DEBUG: WANT_AUTOMAKE is set to ${WANT_AUTOMAKE}"
+ fi
+ warn "DEBUG: will execute <${binary}>"
+fi
+
+#
+# for further consistency
+#
+export WANT_AUTOMAKE="${binary_ver}"
+
+#
+# Now try to run the binary
+#
+if [ ! -x "${binary}" ] ; then
+ # this shouldn't happen
+ err "${binary} is missing or not executable.\n" \
+ "\tPlease try installing the correct version of automake."
+fi
+
+exec "${binary}" "$@"
+# The shell will error out if `exec` failed.
projects / gentoo.git / commitdiff