Move rules for regenerating autoconf files into this shell script.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11186 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/autoconf/AutoRegen.sh b/autoconf/AutoRegen.sh
new file mode 100755 (executable)
index 0000000..efedd1a
--- /dev/null
+++ b/autoconf/AutoRegen.sh
@@ -0,0 +1,20 @@
+#!/bin/sh
+die () {
+       echo "$@" 1>&2
+       exit 1
+}
+test -d autoconf && test -f autoconf/configure.ac && cd autoconf
+[ -f configure.ac ] || die "Can't find 'autoconf' dir; please cd into it first"
+echo "Regenerating aclocal.m4 with aclocal"
+aclocal || die "aclocal failed"
+if ! autoconf --version | egrep '2\.5[0-9]' > /dev/null
+then
+       die "Your autoconf was not detected as being 2.5x"
+fi
+echo "Note: Warnings about 'AC_CONFIG_SUBDIRS: you should use literals' are ok"
+echo "Regenerating configure with autoconf 2.5x"
+autoconf -o ../configure configure.ac || die "autoconf failed"
+cd ..
+echo "Regenerating config.h.in with autoheader 2.5x"
+autoheader -I autoconf autoconf/configure.ac || die "autoheader failed"
+exit 0