Add a test that public headers compile as C99

2 files changed, 64 insertions, 0 deletions

diff --git a/templates/Makefile.template b/templates/Makefile.template
index 1e9753ab68..435b4079cb 100644
--- a/templates/Makefile.template
+++ b/templates/Makefile.template
@@ -1858,6 +1858,12 @@
    $(LIBDIR)/$(CONFIG)/lib${dep}.a\
   % endfor
 
+  % if tgt.language == 'c89':
+  % for src in tgt.src:
+  $(OBJDIR)/$(CONFIG)/${os.path.splitext(src)[0]}.o: CFLAGS := <%text>$(CFLAGS)</%text> -std=c89
+  % endfor
+  % endif
+
   % endfor
   % if not has_no_sources:
   deps_${tgt.name}: $(${tgt.name.upper()}_OBJS:.o=.dep)
diff --git a/templates/test/core/surface/public_headers_must_be_c89.c.template b/templates/test/core/surface/public_headers_must_be_c89.c.template
new file mode 100644
index 0000000000..c95be95a32
--- /dev/null
+++ b/templates/test/core/surface/public_headers_must_be_c89.c.template
@@ -0,0 +1,58 @@
+%YAML 1.2
+--- |
+  /*
+   *
+   * Copyright 2016, Google Inc.
+   * All rights reserved.
+   *
+   * Redistribution and use in source and binary forms, with or without
+   * modification, are permitted provided that the following conditions are
+   * met:
+   *
+   *     * Redistributions of source code must retain the above copyright
+   * notice, this list of conditions and the following disclaimer.
+   *     * Redistributions in binary form must reproduce the above
+   * copyright notice, this list of conditions and the following disclaimer
+   * in the documentation and/or other materials provided with the
+   * distribution.
+   *     * Neither the name of Google Inc. nor the names of its
+   * contributors may be used to endorse or promote products derived from
+   * this software without specific prior written permission.
+   *
+   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+   *
+   */
+
+  <%
+  def is_platform_header(hdr):
+    for platform_identifier in ['_gcc', '_win32', '_pthread']:
+      if platform_identifier in hdr:
+        return True
+    return False
+  hdrs = set()
+  pfx = 'include/'
+  for lib in libs:
+    if lib.language != 'c': continue
+    for hdr in lib.get('public_headers', []):
+      if is_platform_header(hdr): continue
+      assert(hdr[0:len(pfx)] == pfx)
+      hdrs.add(hdr[len(pfx):])
+  hdrs = sorted(list(hdrs))
+  %>\
+  % for hdr in hdrs:
+  #include <${hdr}>
+  % endfor
+
+  int main(int argc, char **argv) {
+    return 0;
+  }