[FFmpeg-devel] warning: unknown warning option '-Wno-bool-operation'; did you mean '-Wno-bool-conversion'? [-Wunknown-warning-option]

Mark Thompson sw at jkqxz.net
Tue Oct 10 17:48:57 EEST 2017

On 10/10/17 15:31, Bjorn Roche wrote:
> On Mon, Oct 9, 2017 at 9:05 PM, Helmut K. C. Tessarek 
> <tessarek at evermeet.cx> wrote:
>> I get thousands of these warnings when compiling ffmpeg:
>> warning: unknown warning option '-Wno-bool-operation'; did you mean
>> '-Wno-bool-conversion'? [-Wunknown-warning-option]
>> I compile on Mac O
> SX 10.11.6 with Apple LLVM version 8.0.0
>> (clang-800.0.42.1).
> I see this too. Did not see it a few days ago.
> OS X 10.12.6
> Apple LLVM version 9.0.0 (clang-900.0.37)
> Target: x86_64-apple-darwin16.7.0
> Thread model: posix

This warning was enabled one way:
Reverted because it caused problems similar to what you are seeing with some versions of GCC:
And then reapplied in a different form:

Can you confirm that it happens for you on a clean build including the last of these commits (and, in particular, not just the first)?  If that is the case, we may need to reconsider it again.


- Mark

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