No member named 'clock' in the global namespace when using FFmpeg pod

Question

My app (iOS 7+, Xcode 6) uses CocoaPods for its dependencies. One of the dependencies is FFmpeg.

When I build my app I get several similar looking issues like

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/ctime:60:9: No member named 'clock' in the global namespace; did you mean 'flock'?

I learned that this is because FFmpeg includes time.h file in libavutil subfolder. This time.h hides system time.h from the compiler and thus the errors.

I tried to manually rename FFmpeg's time.h to something else and this helps. Now I want to do that automatically and in a way that will survive next 'pod update'.

I tried to add libavutil to Sub-Directories to Exclude In Recursive Searches but this doesn't help at all.

I tried to remove "${PODS_ROOT}/Headers/Public/FFmpeg/libavutil" from Header Search Paths and it didn't help either.

I know there are prepare_command and post_install hooks one can use in his Podfile but unfortunately I don't know if these are helpful in my case.

So, how can I exclude time.h in libavutil of FFmpeg pod from header search paths (I don't mind to rename or even remove the time.h)?

Answer 1

For people who have the same issue with ffmpeg's time.h:

You might search the system's time.h and include it manually in the ffmpeg's time.h:

open ffmpeg's time.h (in libavutil) and insert #include </usr/include/time.h> in the beginning.

Of course this is just a lazy workaround, but it's an easy way to include both time.h headers.