Problem running configure on CentOs 6.2 "yasm not found, use --disable-yasm for a crippled build" despite instaling yasm git clone git://source.ffmpeg.org/ffmpeg.git ffmpeg Cloning into ffmpeg... remote: Counting objects: 231331, done. remote: Compressing objects: 100% (52124/52124), done. remote: Total 231331 (delta 182016), reused 227704 (delta 178834) Receiving objects: 100% (231331/231331), 59.13 MiB | 12.66 MiB/s, done. Resolving deltas: 100% (182016/182016), done. /root/ffmpeg/configure yasm not found, use --disable-yasm for a crippled build If you think configure made a mistake, make sure you are using the latest version from Git. If the latest version fails, report the problem to the ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net. Include the log file "config.log" produced by configure as this will help solving the problem. [root@kaltura-dev ffmpeg_build]# yum install yasm rightscale-epel | 951 B 00:00 Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package yasm.x86_64 0:1.1.0-1.el5.rf set to be updated --> Finished Dependency Resolution Dependencies Resolved ======================================================================================================================================================= Package Arch Version Repository Size ======================================================================================================================================================= Installing: yasm x86_64 1.1.0-1.el5.rf dag 879 k Transaction Summary ======================================================================================================================================================= Install 1 Package(s) Upgrade 0 Package(s) Total download size: 879 k Is this ok [y/N]: y Downloading Packages: yasm-1.1.0-1.el5.rf.x86_64.rpm | 879 kB 00:01 warning: rpmts_HdrFromFdno: Header V3 DSA signature: NOKEY, key ID 6b8d79e6 Public key for yasm-1.1.0-1.el5.rf.x86_64.rpm is not installed [root@kaltura-dev ffmpeg_build]# /root/ffmpeg/configure yasm not found, use --disable-yasm for a crippled build If you think configure made a mistake, make sure you are using the latest version from Git. If the latest version fails, report the problem to the ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net. Include the log file "config.log" produced by configure as this will help solving the problem.