[ros-users] [PCL-users] Minimizing compiler memory, package pcl_ros

[Nizar Khalifa Sallem]

At Thu, 24 Feb 2011 14:47:30 +0100,
Nizar Khalifa Sallem wrote:
> 
> At Thu, 24 Feb 2011 14:27:54 +0100,
> futureignobel wrote:
> > 
> > I've also started a thread here: 
> > http://answers.ros.org/question/154/minimizing-compiler-memory-pcl_ros
> > 
> > Please answer there, if you can.
> > 
> > W dniu 24.02.2011 14:22, futureignobel pisze:
> > > Hi,
> > >
> > > does anybody know, how to minimize the memory needed for gcc/g++ to 
> > > compile a particular package? I'm trying to compile the pcl_ros 
> > > package on a BeagleBoard-xM, but the compiler crashes each time 
> > > because the cc1plus process is being killed due to low memory (BB-xM 
> > > has 500MB of RAM). I've read a lot about this already, but found no 
> > > solution. I've already been able to compile openni and flann (which 
> > > also caused errors).
> > >
> > > The only thing I'd like to try out and wasn't still able to is adding 
> > > a "-finline-limit 600" (the number here may differ) compiler flag, as 
> > > I don't know how to use the rosbuild_add_compile_flags(target flag) 
> > > macro in case of flags with values.
> > >
> > > Any help would be appreciated. I think being able to use Kinect on an 
> > > ARM based board would be great and the effort is well worth it. Among 
> > > small single board computers, ARM based boards cost 10 times less 
> > > than, for instance, the AscTec Atom with similar capabilities.
> > >
> > > Also, if anyone out there has got a PandaBoard and would like to check 
> > > whether what I've found out so far works with it, please let know.
> > >
> > > Cheers, Tom
> > _______________________________________________
> > PCL-users at code.ros.org / http://pointclouds.org
> > https://code.ros.org/mailman/listinfo/pcl-users
> You need the -O2 flag and desactivate all -O0 -ggdb or any other debug
> flag. The simplest way, is to edit the CMakeLists.txt and edit the
> line 
> set (ROS_BUILD_TYPE RelWithDebInfo) and move it to 
> set (ROS_BUILD_TYPE Release)
> This should do the trick.
> 
> --
> Nizar
> 
> _______________________________________________
> PCL-users at code.ros.org / http://pointclouds.org
> https://code.ros.org/mailman/listinfo/pcl-users
PS: this can also be done from the cmake command line :
cmake -DYOUR_HABITUAL_FLAGS_TO_BUILD -DROS_BUILD_TYPE=Release,
antother interesting build type could be : MinSizeRel for minimal size
release but, personaly, I've never tested.

--
Nizar