From your build output I see the following reference to ccache in the target architecture. I think that's probably where you want to look. Building architecture x86_64 Here: http://jenkins.ros.org/job/ros-hydro-ardrone-autonomy_binarydeb_precise_amd64/2/console Tully On Fri, Feb 21, 2014 at 10:28 AM, Mani Monajjemi wrote: > 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 >> >> > > _______________________________________________ > ros-release mailing list > ros-release@code.ros.org > http://lists.ros.org/mailman/listinfo/ros-release > >