1 files changed, 54 insertions, 0 deletions
diff --git a/t/gnuwarn.sh b/t/gnuwarn.sh
new file mode 100755
index 000000000..5aac432b7
--- /dev/null
+++ b/t/gnuwarn.sh
@@ -0,0 +1,54 @@
+#! /bin/sh
+# Copyright (C) 2002-2012 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/>.
+
+# Check that Automake warns about user variables being overridden.
+
+. ./defs || Exit 1
+
+# We need (almost) complete control over automake options.
+AUTOMAKE="$am_original_AUTOMAKE -Werror"
+
+cat >> configure.ac << 'END'
+AC_PROG_CC
+AC_OUTPUT
+END
+
+# Needed by --gnu.
+: > NEWS
+: > README
+: > AUTHORS
+: > ChangeLog
+
+cat > Makefile.am << 'END'
+CFLAGS += -I..
+LDFLAGS = -lfoo
+CXXFLAGS = -Wall
+bin_PROGRAMS = bar
+END
+
+$ACLOCAL
+# Don't warn in foreign mode
+$AUTOMAKE --add-missing --foreign
+# Warn in gnu mode
+AUTOMAKE_fails --add-missing --gnu
+grep '^Makefile\.am:1:.*CFLAGS' stderr
+grep '^Makefile\.am:2:.*LDFLAGS' stderr
+# No reason to warn about CXXFLAGS since it's not used.
+grep CXXFLAGS stderr && Exit 1
+# Don't warn if -Wno-gnu.
+$AUTOMAKE --gnu -Wno-gnu
+
+: