Auto-generate matrix of build configurations with custom compiler

[GordonJess]

I am cross-building on windows for an embedded device and I want to auto-generate the combinations for my build using my own custom compiler, but I can't figure out how to do this. Despite installing my own config (which has the compiler added to settings.yml) and passing in my own CONAN_BASE_PROFILE, cpt is still generating for Visual Studio.

Is this even possible?

My build.py looks like this:

from cpt.packager import ConanMultiPackager

os.environ["CONAN_CONFIG_URL"] = "https://my_scm/my_conan_config.git"
os.environ["CONAN_BASE_PROFILE"] = "my_compiler"
os.environ["CONAN_ARCHS"] = "x86_64"
os.environ["CONAN_BUILD_TYPES"] = "Debug, Release"
os.environ["CPT_SUMMARY_FILE"] = "cpt_summary_file.json"

if __name__ == "__main__":
    builder = ConanMultiPackager(my_compiler_versions=["1.0"]) # I want to limit builds to a specific compiler version
    builder.add_common_builds()
    builder.run()

[uilianries]

No, CPT uses Visual Studio by default on Windows or gcc.

I recommend you using lockfiles instead: https://docs.conan.io/en/latest/howtos/generic_ci_artifactory.html#generating-build-info-from-lockfiles-information

[GordonJess]

Hi @uilianries,

Thanks, I understand that it is not possible, but maybe there was still a misunderstanding of what I'm actually looking for (as I don't see how lockfiles are related).

I want to calculate different build configurations based on env vars (CONAN_BUILD_TYPES, CONAN_ARCHS, etc.) and have them automatically built for me:

 >> Running builds...

+-----+--------------------+--------------+------------------------+
|   # | build_type   |   compiler.version | compiler      | arch   |
|-----+--------------------+--------------+------------------------+
|   1 | Release      |              1.0.0 | my_compiler   | x86_64 |
|   2 | Debug        |              1.0.0 | my_compiler   | x86_64 |
+-----+--------------------+--------------+------------------------+

[uilianries]

lockfiles are just what you said, calculate the different builds, so you will have a file which can be re-used by you, your coworker or even the CI, and reproduce the exactly same build.

You can obtain more information here: https://docs.conan.io/en/latest/versioning/lockfiles.html

but basically you can "freeze" your configuration (profiles and custom settings or options) and generate a file, you can pass it to conan create command (under CI) and generate your packages. It can sound more manual job, but at least you will have a reproducible build.

[GordonJess]

It's not the reproducability of builds I'm asking about though. It's about simplifying bulk creation of packages with all the combinations of settings and options I need.

Anyway, I think I might be able to achieve this without conan package tools, using jenkins matrices.