[Ffmpeg-devel] bash substitutions

[matthieu castet]

Jacob Meuser wrote:
> revision 1.217 of configure added some shell substitutions.
> these apparently only work with bash, which is _not_ the /bin/sh
> on all systems.
> 
> specifically:
> 
>   echo "SPPMAJOR=${lavc_version/.*/}" >> config.mak
>   echo "LAVCMAJOR=${lavc_version/.*/}" >> config.mak
>   echo "LAVFMAJOR=${lavf_version/.*/}" >> config.mak
>   echo "LAVUMAJOR=${lavu_version/.*/}" >> config.mak
> 
> this not work with pdksh, which is the /bin/sh on OpenBSD.
> I doubt it works with ash, which is the /bin/sh on NetBSD.
> 
And dash on debian.

> I suggest the following patch.
> 

you could use on sh :
${parameter%word}
${parameter%%word}
${parameter#word}
${parameter##word}

Something like ${lavu_version%%.[^.]*} should work


Matthieu