[FFmpeg-devel] Configure with --cpu=host and Clang

yukari yakumo yukariin at yandex.ru
Mon Dec 14 16:11:00 CET 2015

Hi everyone!
I'm Gentoo Linux user and currently I play with Clang as default compiler.
And currently I tried to build ffmpeg 2.3.8 with Clang 3.7.0 and -march=native in C(XX)FLAGS (ffmpeg-2.3.8.ebuild automatically convert this to --cpu=host configure flag).
But I get `´╗┐--cpu=host not supported with compiler clang` error on executing ./configure
It's seems like output of clang test compilation different from gcc output.
I make a little patch that you can fing in attachment that fix this issue. This is very similar to gcc check_native method.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: ffmpeg_clang_march_native.patch
Type: text/x-diff
Size: 583 bytes
Desc: not available
URL: <http://ffmpeg.org/pipermail/ffmpeg-devel/attachments/20151214/4e403b99/attachment.patch>

More information about the ffmpeg-devel mailing list