[third_party/ffmpeg] reference config dir more explicitly
The Fuchsia ffmpeg repo is integrated at
//builds/secondary/third_party/ffmpeg so that its build files are
mirrored in //third_party/ffmpeg. Unfortunately, the config files
in this repo are not mirrored. Consequently, the BUILD.gn file has to
be specific about the location of the config files so the compiler
can find them. This CL changes the `ffmpeg_config_root` variable to
point to the config files in //build/secondary. A comment has been
added explaining the situation and what to do if, in the future, we
are able to move this to //third_party/ffmpeg
Test: build issue
Change-Id: I9e390092f20f0aee2c61dd212809f846d9505bc8
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/ffmpeg/+/748889
Reviewed-by: Petr Hosek <phosek@google.com>
1 file changed
