python/build/ffmpeg: disable clang's integrated assembler

Causes compatibility problems, because FFmpeg expects the GNU as syntax. This FFmpeg bug report has some information, but it was closed as "invalid": https://trac.ffmpeg.org/ticket/5158

python/build/ffmpeg: disable clang's integrated assembler
f3dd50de · Max Kellermann · c776bcc5 · f3dd50de
Commit f3dd50de authored Oct 26, 2016 by Max Kellermann
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Showing with 7 additions and 2 deletions

ffmpeg.py python/build/ffmpeg.py +7 -2

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--- a/python/build/ffmpeg.py
+++ b/python/build/ffmpeg.py
@@ -10,6 +10,11 @@ class FfmpegProject(Project):
        self.configure_args = configure_args
        self.cppflags = cppflags

+    def _filter_cflags(self, flags):
+        # FFmpeg expects the GNU as syntax
+        flags = flags.replace(' -integrated-as ', ' -no-integrated-as ')
+        return flags
+
    def build(self, toolchain):
        src = self.unpack(toolchain)
        build = self.make_build_path(toolchain)
@@ -29,8 +34,8 @@ class FfmpegProject(Project):
            '--cc=' + toolchain.cc,
            '--cxx=' + toolchain.cxx,
            '--nm=' + toolchain.nm,
-            '--extra-cflags=' + toolchain.cflags + ' ' + toolchain.cppflags + ' ' + self.cppflags,
-            '--extra-cxxflags=' + toolchain.cxxflags + ' ' + toolchain.cppflags + ' ' + self.cppflags,
+            '--extra-cflags=' + self._filter_cflags(toolchain.cflags) + ' ' + toolchain.cppflags + ' ' + self.cppflags,
+            '--extra-cxxflags=' + self._filter_cflags(toolchain.cxxflags) + ' ' + toolchain.cppflags + ' ' + self.cppflags,
            '--extra-ldflags=' + toolchain.ldflags,
            '--extra-libs=' + toolchain.libs,
            '--ar=' + toolchain.ar,