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-rw-r--r--config/make-system-wrappers.py38
1 files changed, 38 insertions, 0 deletions
diff --git a/config/make-system-wrappers.py b/config/make-system-wrappers.py
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+++ b/config/make-system-wrappers.py
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+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+import os
+
+from mozbuild.util import FileAvoidWrite
+
+header_template = """#pragma GCC system_header
+#pragma GCC visibility push(default)
+{includes}
+#pragma GCC visibility pop
+"""
+
+include_next_template = "#include_next <{header}>"
+
+
+# The 'unused' arg is the output file from the file_generate action. We actually
+# generate all the files in header_list
+def gen_wrappers(unused, outdir, *header_list):
+ for header in header_list:
+ with FileAvoidWrite(os.path.join(outdir, header)) as f:
+ includes = include_next_template.format(header=header)
+ if header == "wayland-util.h":
+ # wayland-util.h in Wayland < 1.12 includes math.h inside an
+ # extern "C" block, which breaks including the header from C++.
+ # This was fixed in Wayland 1.12, but for versions earlier than
+ # that, we work around that by force-including math.h first.
+ includes = "#include <math.h>\n" + includes
+ elif header == "wayland-client.h":
+ # The system wayland-client.h uses quote includes for
+ # wayland-util.h, which means wayland-util.h is picked from the
+ # directory containing wayland-client.h first, and there's no
+ # way around that with -I, -isystem, or other flags. So, we
+ # force to include it from our wrapper, before including the
+ # system header, so that our wayland-util.h wrapper is picked
+ # first.
+ includes = '#include "wayland-util.h"\n' + includes
+ f.write(header_template.format(includes=includes))