1#!/bin/sh
2
3# Before using, you should figure out all the .m4 macros that your
4# configure.m4 script needs and make sure they exist in the m4/
5# directory.
6#
7# These are the files that this script might edit:
8#    aclocal.m4 configure Makefile.in src/config.h.in \
9#    depcomp config.guess config.sub install-sh missing mkinstalldirs \
10#    ltmain.sh
11#
12# Here's a command you can run to see what files aclocal will import:
13#  aclocal -I ../autoconf --output=- | sed -n 's/^m4_include..\([^]]*\).*/\1/p'
14
15set -ex
16rm -rf autom4te.cache
17
18trap 'rm -f aclocal.m4.tmp' EXIT
19
20# Returns the first binary in $* that exists, or the last arg, if none exists.
21WhichOf() {
22  for candidate in "$@"; do
23    if "$candidate" --version >/dev/null 2>&1; then
24      echo "$candidate"
25      return
26    fi
27  done
28  echo "$candidate"   # the last one in $@
29}
30
31# Use version 1.9 of aclocal and automake if available.
32ACLOCAL=`WhichOf aclocal-1.9 aclocal`
33AUTOMAKE=`WhichOf automake-1.9 automake`
34LIBTOOLIZE=`WhichOf glibtoolize libtoolize15 libtoolize14 libtoolize`
35
36# aclocal tries to overwrite aclocal.m4 even if the contents haven't
37# changed, which is annoying when the file is not open for edit (in
38# p4).  We work around this by writing to a temp file and just
39# updating the timestamp if the file hasn't change.
40"$ACLOCAL" --force -I m4 --output=aclocal.m4.tmp
41if cmp aclocal.m4.tmp aclocal.m4; then
42  touch aclocal.m4               # pretend that we regenerated the file
43  rm -f aclocal.m4.tmp
44else
45  mv aclocal.m4.tmp aclocal.m4   # we did set -e above, so we die if this fails
46fi
47
48grep -q '^[^#]*AC_PROG_LIBTOOL' configure.ac && "$LIBTOOLIZE" -c -f
49autoconf -f -W all,no-obsolete
50autoheader -f -W all
51"$AUTOMAKE" -a -c -f -W all
52
53rm -rf autom4te.cache
54exit 0
55