Add a C89 compliance test for the headers.

Technically we still require a couple things from C99 like "bool",
but it works with -std=c89 under gcc.

2 files changed, 38 insertions, 0 deletions

diff --git a/libdimension/tests/Makefile.am b/libdimension/tests/Makefile.am
index a2d78ba..0349850 100644
--- a/libdimension/tests/Makefile.am
+++ b/libdimension/tests/Makefile.am
@@ -33,6 +33,7 @@ check_PROGRAMS    = warning.test                                               \
                     png.test                                                   \
                     gl.test                                                    \
                     render.test                                                \
+                    c89.test                                                   \
                     c99.test                                                   \
                     cxx.test
 TESTS             = $(check_PROGRAMS)
@@ -96,6 +97,11 @@ gl_test_LDADD   = libdimension-tests.la
 render_test_SOURCES = render.c
 render_test_LDADD   = libdimension-tests.la
 
+c89_test_SOURCES = c89.c
+c89_test_LDADD   = libdimension-tests.la
+
+c89.o: CFLAGS += -std=c89 -Wpedantic
+
 c99_test_SOURCES = c99.c
 c99_test_LDADD   = libdimension-tests.la
 
diff --git a/libdimension/tests/c89.c b/libdimension/tests/c89.c
new file mode 100644
index 0000000..9393184
--- /dev/null
+++ b/libdimension/tests/c89.c
@@ -0,0 +1,32 @@
+/*************************************************************************
+ * Copyright (C) 2014 Tavian Barnes <tavianator@tavianator.com>          *
+ *                                                                       *
+ * This file is part of The Dimension Test Suite.                        *
+ *                                                                       *
+ * The Dimension Test Suite 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 3 of the    *
+ * License, or (at your option) any later version.                       *
+ *                                                                       *
+ * The Dimension Test Suite 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/>. *
+ *************************************************************************/
+
+/**
+ * @file
+ * Check C89 compliance of headers.
+ */
+
+#include "dimension.h"
+#include <stddef.h>
+
+int
+main(void)
+{
+  return EXIT_SUCCESS;
+}