You can build everything with 'bitbake world' (and it's going to be long). Build times are recorded into tmp/buildstats, if that is enabled (see default local.conf to see how if you're not already using that).
Alex On Wed, 24 Apr 2024 at 09:56, Fabio Berton <[email protected]> wrote: > > Hi Alex, > > What should I test to measure build time, all recipes that use cmake from > OE-Core and meta-openembedded? Is there a way to build all recipes, or should > I find all recipes that use cmake and run bitbake <all-recipes>? > > Regards, > > Fabio Berton > > On 4/23/2024 2:01 PM, Alexander Kanavin wrote: > > I'm not sure I like the idea. This is going to break ptests or other > usage of CTest in cmake-based recipes that aren't under our control. > Building tests is also a test in itself even if you don't run them. > I'd say unless this adds significantly to build times we should leave > it as it is. > > Alex > > On Tue, 23 Apr 2024 at 14:31, Fabio Berton via lists.openembedded.org > <[email protected]> wrote: > > I've noticed that some recipes, like json-c [1], which use the cmake bbclass, > are generating files that aren't being used. This is because CMake sets the > BUILD_TESTING option to ON by default. According to the CMake documentation > [2], when CTest is included, as json-c does here [3], the module > automatically creates a BUILD_TESTING option. This option determines whether > to enable testing support, and it is ON by default. > > In the json-c example, the tests used by the do_install_ptest task are always > generated. Thus, ${B}/tests/ exists even when ptests are not included in > DISTRO_FEATURES. > > As the behavior of CTest/CMake to build tests by default is rather > surprising, we are wondering whether disabling this option by default is > feasible in the OpenEmbedded context. Recipes expecting tests to be built > (e.g. because of ptest support) would then turn on the flag explicitly. > > For example, adding this to cmake.bbclass: > > OECMAKE_BUILD_TESTING ??= "false" > > EXTRA_OECMAKE:append = "\\ > ${@bb.utils.contains('OECMAKE_BUILD_TESTING', 'false', > '-DBUILD_TESTING=OFF', '', d)} \\ > " > > and then set the OECMAKE_BUILD_TESTING in the recipe that requires > BUILD_TESTING=ON > > Do you have any suggestions on which steps we should take to verify that this > does not introduce any regressions? > > > 1 - > https://git.openembedded.org/openembedded-core/tree/meta/recipes-devtools/json-c/json-c_0.17.bb?h=master > > 2 - https://cmake.org/cmake/help/latest/module/CTest.html > > 3 - https://github.com/json-c/json-c/blob/master/CMakeLists.txt#L19 > > > Regards, > > Fabio Berton > > > >
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