[MPlayer-users] unable to build with march CFLAGS

[Roger Pack]

On 10/5/13, Reimar Döffinger <Reimar.Doeffinger at gmx.de> wrote:
> On 03.10.2013, at 20:39, Roger Pack <rogerdpack2 at gmail.com> wrote:
>> Hello.  As a note I tried compiling mplayer the other day like this:
>>
>> $ cd mplayer-checkout-2013-10-02
>> $ export CFLAGS=-march=core-avx2
>> $ ./configure && make
>
> As configure should tell you, if you set CFLAGS you are on your own, it
> almost certainly won't compile unless you at least base it on what MPlayer
> would choose (not to mention even if it did, your CFLAGS would probably lead
> to a horribly slow MPlayer since it only enables default optimizations).

Interesting.  It appears that with FFmpeg, if CFLAGS is set, it still
uses -O3 etc. so I had presumed MPlayer does the same.

> If you just want to (more or less safely) add some flags use --extra-cflags,
> though I don't know why you would want to set -march specifically, MPlayer
> will already pick -march=native.

using --extra-cflags and it seems to work well now, thanks!
-roger-