Re: Caching build objects: Waf and ccache
Are you looking for general instructions or are you trying to optimize the rtems build? To wrap the compiler using ccache, override the environment variables during the configuration: CXX='ccache gxx' CC='ccache gcc' waf configure The rtems manual does not advertise it, so it this may void your warranty: CC="ccache /home/user/quick-start/rtems/6/bin/sparc-rtems6-gcc" ./waf configure --prefix=$HOME/quick-start/rtems/6 The wafcache extension is a different system: if the wafcache.py is added to a project (it is not a default option yet), all build results (link, results, manual pages) become shareable using a filesystem directory or over the network. It is probably unnecessary to import it in rtems unless you are addressing a specific performance issue. Thomas On Tue, 5 Oct 2021 11:17:26 +0200, Stanislav Pankevich wrote: > Hello everyone, > > I have a very specific question about the Waf build system. I apologize if > I missed this information somewhere in the documentation. > > From looking at ./waf --help it doesn't look like Waf would have a > ccache-like functionality built in. > > When using CMake build system, I am used to providing > > -DCMAKE_CXX_COMPILER_LAUNCHER=ccache > > that makes CMake switch to using ccache. Is there an equivalent option for > Waf or is there a native way in Waf for caching object artifacts? > > Thank you, > > Stanislav > ___ > users mailing list > users@rtems.org > http://lists.rtems.org/mailman/listinfo/users ___ users mailing list users@rtems.org http://lists.rtems.org/mailman/listinfo/users
Re: Caching build objects: Waf and ccache
Thanks for the answer. My comments below: On Tue, Oct 5, 2021 at 11:50 AM Sebastian Huber < sebastian.hu...@embedded-brains.de> wrote: > Hello Stanislav, > > On 05/10/2021 11:17, Stanislav Pankevich wrote: > > I have a very specific question about the Waf build system. I apologize > if > > I missed this information somewhere in the documentation. > > > > From looking at ./waf --help it doesn't look like Waf would have a > > ccache-like functionality built in. > > > > When using CMake build system, I am used to providing > > > > -DCMAKE_CXX_COMPILER_LAUNCHER=ccache > > > > that makes CMake switch to using ccache. Is there an equivalent option > for > > Waf or is there a native way in Waf for caching object artifacts? > > you may have a look at this: > > https://gitlab.com/ita1024/waf/blob/master/waflib/extras/wafcache.py > > Thanks for the pointer! I don't know if this works with RTEMS. Do you want to use this for the > RTEMS build? I am not sure if it is worth the trouble since RTEMS builds > in a couple of seconds. > Yes, we would like to have caching specifically for building RTEMS using Waf. The upper layers of our software are built with ccache enabled in CMake. Building RTEMS and BSP for Zynq 7020 is taking ~60 seconds on our GitLab Runner VM (1460 files). We are building from the default instructions (2.5. Build a Board Support Package (BSP)), we might remove the test suites eventually but the build time is already noticeable. Thanks. ___ users mailing list users@rtems.org http://lists.rtems.org/mailman/listinfo/users
Re: Caching build objects: Waf and ccache
Hello Stanislav, On 05/10/2021 11:17, Stanislav Pankevich wrote: I have a very specific question about the Waf build system. I apologize if I missed this information somewhere in the documentation. From looking at ./waf --help it doesn't look like Waf would have a ccache-like functionality built in. When using CMake build system, I am used to providing -DCMAKE_CXX_COMPILER_LAUNCHER=ccache that makes CMake switch to using ccache. Is there an equivalent option for Waf or is there a native way in Waf for caching object artifacts? you may have a look at this: https://gitlab.com/ita1024/waf/blob/master/waflib/extras/wafcache.py I don't know if this works with RTEMS. Do you want to use this for the RTEMS build? I am not sure if it is worth the trouble since RTEMS builds in a couple of seconds. -- embedded brains GmbH Herr Sebastian HUBER Dornierstr. 4 82178 Puchheim Germany email: sebastian.hu...@embedded-brains.de phone: +49-89-18 94 741 - 16 fax: +49-89-18 94 741 - 08 Registergericht: Amtsgericht München Registernummer: HRB 157899 Vertretungsberechtigte Geschäftsführer: Peter Rasmussen, Thomas Dörfler Unsere Datenschutzerklärung finden Sie hier: https://embedded-brains.de/datenschutzerklaerung/ ___ users mailing list users@rtems.org http://lists.rtems.org/mailman/listinfo/users
Caching build objects: Waf and ccache
Hello everyone, I have a very specific question about the Waf build system. I apologize if I missed this information somewhere in the documentation. >From looking at ./waf --help it doesn't look like Waf would have a ccache-like functionality built in. When using CMake build system, I am used to providing -DCMAKE_CXX_COMPILER_LAUNCHER=ccache that makes CMake switch to using ccache. Is there an equivalent option for Waf or is there a native way in Waf for caching object artifacts? Thank you, Stanislav ___ users mailing list users@rtems.org http://lists.rtems.org/mailman/listinfo/users
