[FFmpeg-devel] fail to build ffmpeg with icc 14

[wm4]

On Fri, 2 Feb 2018 21:50:00 +0800 (CST)
qw <applemax82 at 163.com> wrote:

> Hi,
> 
> 
> I use the following command to build ffmpeg:
> 
> 
> ./configure --cc=/opt/intel/bin/icc --enable-version3 --enable-asm --enable-avfilter --disable-static --enable-shared --enable-gpl --enable-nonfree --prefix=/usr/local/ --extra-cflags='-I/usr/local/include --extra-ldflags='-L/usr/local/lib --enable-stripping
> make
> 
> 
> But I fail to compile ffmpeg, and error message is shown as below:
> 
> 
> icc: command line warning #10121: overriding '-std=gnu99' with '-std=c99'
> libavutil/cpu.c(48): error: identifier "ATOMIC_VAR_INIT" is undefined
>   static atomic_int cpu_flags = ATOMIC_VAR_INIT(-1);
>                                 ^

Maybe we need to force c11? Could you try to add -std=c11 or -std=gnu11
to CFLAGS?