Hi Tully,

Thank you for your answer.

I think the reference to `ccache` in that folder name is because `ccache`
is being used by default in the environment. I checked console output for
two other ROS packages and they both have this line in their CMake output:

-- Check for working C compiler: /usr/lib/ccache/gcc
-- Check for working C compiler: /usr/lib/ccache/gcc -- works


For example:

[actionlib]
http://jenkins.ros.org/job/devel-hydro-actionlib/ARCH_PARAM=amd64,UBUNTU_PARAM=precise,label=devel/lastBuild/console
[convex_decomposition]
http://jenkins.ros.org/job/devel-hydro-convex_decomposition/ARCH_PARAM=amd64,UBUNTU_PARAM=precise,label=devel/16/console

Exactly similar thing happens in the full console of the problematic
package:
http://jenkins.ros.org/job/ros-hydro-ardrone-autonomy_binarydeb_precise_amd64/2/consoleFull

I guess `pbuilder` is integrating `ccache` by default:
https://wiki.ubuntu.com/PbuilderHowto#Integration_with_ccache

- Mani

Mani Monajjemi


On Fri, Feb 21, 2014 at 11:23 AM, Tully Foote <tfoote@osrfoundation.org>wrote:

> 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 <Output in
> /tmp/buildd/ros-hydro-ardrone-autonomy-1.3.1-0precise-20140219-2242/obj-x86_64-linux-gnu/ardrone/src/ardronelib/ARDroneLib/FFMPEG/ffmpeg/../../Soft/Build/targets_versions//ffmpeg_x86_64_PROD_MODE_Linux_3.5.0-46-generic_GNU_Linux_usrlibccachegcc_4.6.3>
>
> 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 <mani.monajjemi@gmail.com
> > 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 <mguenthe@uos.de> wrote:
>>
>>> Hi Mani,
>>>
>>> On Thu, 20 Feb 2014 18:21:14 -0800
>>> Mani Monajjemi <mani.monajjemi@gmail.com> 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
>>>
>>>
>>
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>>
>