On 2017-10-10 10:48, Mark Thompson wrote:
> This warning was enabled one way:
> <http://git.videolan.org/?p=ffmpeg.git;a=commit;h=c2d155e11ee5ec732d471982f2dee43703bcd5a7>

Yep, I can see warnings:
warning: unknown warning option '-Wno-bool-operation'; did you mean
'-Wno-bool-conversion'? [-Wunknown-warning-option]

> Reverted because it caused problems similar to what you are seeing with some 
> versions of GCC:
> <http://git.videolan.org/?p=ffmpeg.git;a=commit;h=c154c34c1b37f570ee879560903af1a1a26153e1>

Warnings are gone !!!

> And then reapplied in a different form:
> <http://git.videolan.org/?p=ffmpeg.git;a=commit;h=c585b4e9f0b30b2ce60a48246f6fe656b4fb3957>

Yep, and there they are again:
warning: unknown warning option '-Wno-bool-operation'; did you mean
'-Wno-bool-conversion'? [-Wunknown-warning-option]

> 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.

So, it seems that this options is not available on certain gcc and clang
compilers.

-- 
regards Helmut K. C. Tessarek              KeyID 0xF7832007C11F128D
Key fingerprint = 28A3 1666 4FE8 D72C CFD5 8B23 F783 2007 C11F 128D

/*
   Thou shalt not follow the NULL pointer for chaos and madness
   await thee at its end.
*/
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