1 files changed, 112 insertions, 0 deletions
diff --git a/t/remake9c.sh b/t/remake9c.sh
new file mode 100755
index 000000000..efbec30f0
--- /dev/null
+++ b/t/remake9c.sh
@@ -0,0 +1,112 @@
+#! /bin/sh
+# Copyright (C) 2010-2012 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Test remake rules when acinclude.m4 or its prerequisites change.
+# Keep in sync with the other sister tests 'remake9*.test'.
+
+. ./defs || Exit 1
+
+magic1=::MagicStringOne::
+magic2=__MagicStringTwo__
+
+if using_gmake; then
+  remake_() { $MAKE nil; }
+else
+  remake_() { $MAKE Makefile && $MAKE foo.sh; }
+fi
+
+cat >> configure.ac <<END
+FINGERPRINT='my_fingerprint'
+AC_SUBST([FINGERPRINT])
+AC_CONFIG_FILES([foo.sh:foo.in], [chmod a+x foo.sh])
+AC_OUTPUT
+END
+
+cat > Makefile.am <<'END'
+nil:
+.PHONY: nil
+
+# The right way to extend an autogenerated aclocal.m4 is to provide
+# an acinclude.m4 file.
+$(srcdir)/acinclude.m4: $(srcdir)/tweak-acinclude-m4
+	$(SHELL) $(srcdir)/tweak-acinclude-m4 <$@ >$@-t
+	mv -f $@-t $@
+	touch $@
+EXTRA_DIST = $(srcdir)/tweak-acinclude-m4
+
+# Used by "make distcheck" later.
+check-local:
+	test x'$(FINGERPRINT)' = x'DummyValue'
+	test x"`./foo.sh`" = x"DummyValue"
+END
+
+cat > foo.in <<END
+#!/bin/sh
+echo '@FINGERPRINT@'
+END
+
+echo "AC_DEFUN([my_fingerprint], [BadBadBad])" > acinclude.m4
+
+echo : > tweak-acinclude-m4 # It is a no-op by default.
+
+$ACLOCAL
+$AUTOCONF
+$AUTOMAKE
+
+for vpath in : false; do
+
+  if $vpath; then
+    mkdir build
+    cd build
+    srcdir=..
+  else
+    srcdir=.
+  fi
+
+  $srcdir/configure
+  $MAKE # Should be a no-op.
+
+  $sleep
+  echo "AC_DEFUN([my_fingerprint], [$magic1])" > $srcdir/acinclude.m4
+  remake_
+  $FGREP FINGERPRINT Makefile # For debugging.
+  $FGREP $magic1 Makefile
+  test x"`./foo.sh`" = x"$magic1"
+
+  $sleep
+  echo "echo 'AC_DEFUN([my_fingerprint], [$magic2])'" \
+    > $srcdir/tweak-acinclude-m4
+  remake_
+  $FGREP FINGERPRINT Makefile # For debugging.
+  $FGREP $magic1 Makefile && Exit 1
+  $FGREP $magic2 Makefile
+  test x"`./foo.sh`" = x"$magic2"
+
+  $sleep
+  echo : > $srcdir/tweak-acinclude-m4 # Make it a no-op again.
+  echo "AC_DEFUN([my_fingerprint], [DummyValue])" > $srcdir/acinclude.m4
+  using_gmake || remake_
+  $MAKE distcheck
+  $FGREP $magic1 Makefile && Exit 1 # Sanity check.
+  $FGREP $magic2 Makefile && Exit 1 # Likewise.
+
+  $MAKE distclean
+
+  cd $srcdir
+
+done
+
+: