[FFmpeg-devel] [PATCH v2] configure: [loongson] adjust MMI check in configure

[yinshiyou-hf at loongson.cn]

> -----原始邮件-----
> 发件人: "Jin Bo" <jinbo at loongson.cn>
> 发送时间: 2021-08-03 12:05:21 (星期二)
> 收件人: ffmpeg-devel at ffmpeg.org
> 抄送: 
> 主题: [FFmpeg-devel] [PATCH v2] configure: [loongson] adjust MMI check in configure
> 
> After standardizing the use of 'pxor' in commit 'ebedd26', FFmpeg
> build failed with upstream compiler, for 'pxor' is not supported
> in time. This patch helps to workaround the build failure by
> checking whether 'pxor' is supported during configuration, if not,
> MMI will be disabled.
> ---
>  configure | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/configure b/configure
> index 94b30afe74..2aea0f841a 100755
> --- a/configure
> +++ b/configure
> @@ -5951,7 +5951,7 @@ elif enabled mips; then
>      enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"' '-mloongson-ext' && append MMIFLAGS '-mloongson-ext'
>  
>      # MMI can be detected at runtime too
> -    enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"' '-mloongson-mmi' && append MMIFLAGS '-mloongson-mmi'
> +    enabled mmi && check_inline_asm mmi '"pxor $f0, $f0, $f0"' '-mloongson-mmi' && append MMIFLAGS '-mloongson-mmi'
>  
>      if enabled bigendian && enabled msa; then
>          disable msa
> -- 
> 2.20.1
> 
LGTM