after you download the ffmpeg source via svn or source.tar
if you recieve this error
Unable to create and execute files in /tmp. Set the TMPDIR environment
variable to another directory and make sure that /tmp is not mounted
Sanity test failed.
If you think configure made a mistake, make sure you are using the latest
version from SVN. If the latest version fails, report the problem to the
[email protected] mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file “config.err” produced by configure as this will help
solving the problem.”
to fix this you need to execute: export TMPDIR=~/tmp
That assumes you’ve created the tmp dir in your home directory
3) make install