Hi Martin, Thank you for your answer. `ccache` seems to be the default compiler front-end on the build server. There is no reference to `ccache` in any of Makefiles. You are right `ar` is in `binutils` and `binutils` seems to be installed on the server (my prev. email). However `ar` seems not to be in the PATH or there might be a bad symlink to it. - Mani Mani Monajjemi On Fri, Feb 21, 2014 at 2:43 AM, Martin Günther wrote: > Hi Mani, > > On Thu, 20 Feb 2014 18:21:14 -0800 > Mani Monajjemi wrote: > > > [...] > > `ar` is in `binutils` Ubuntu package > > [...] > > > > However, `ar` is still not found: > > > > /usr/lib/ccache/ar: Command not found > > `/usr/bin/ar` is in the binutils package, `/usr/lib/ccache/ar` is in no > Debian package. (Also, installing ccache didn't set up that > symlink on my machine). There's probably a problem in your makefiles; > you shouldn't assume ccache is installed. > > Cheers, > Martin > > -- > Dipl.-Inf. Martin Günther > Universität Osnabrück > Institut für Informatik > Albrechtstr. 28 (Raum 31/503) > D-49076 Osnabrück > > Fon: 0541 969 2434 > http://www.inf.uos.de/mguenthe/ > > _______________________________________________ > ros-release mailing list > ros-release@code.ros.org > http://lists.ros.org/mailman/listinfo/ros-release > >