jade
ecfe9345cf
Apparently it was impolite to lint with 128 jobs on our CI machine with
128 threads. Let's fix it.
Change-Id: I9ca7306294c6773c6f233690ba49d45a1da6bf7a
106 lines
3.4 KiB
Meson
106 lines
3.4 KiB
Meson
# The clang-tidy target for Lix
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run_clang_tidy = find_program('run-clang-tidy', required : false)
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# Although this looks like it wants to be pkg-config, pkg-config does not
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# really work for *plugins*, which are executable-like .so files that also
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# cannot be found via find_program. Fun!
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if get_option('lix-clang-tidy-checks-path') != ''
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lix_clang_tidy_so = get_option('lix-clang-tidy-checks-path')
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lix_clang_tidy_so_found = true
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else
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lix_clang_tidy_subproj = subproject(
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'lix-clang-tidy',
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required : false,
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default_options : {'build-by-default': false}
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)
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if lix_clang_tidy_subproj.found()
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lix_clang_tidy_so = lix_clang_tidy_subproj.get_variable('lix_clang_tidy')
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lix_clang_tidy_so_found = true
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else
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lix_clang_tidy_so_found = false
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endif
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endif
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# Due to numerous problems, such as:
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# - Meson does not expose pch targets, but *fine*, I can just ask Ninja for
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# them with `ninja -t targets rule cpp_PCH` and build them manually:
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# https://github.com/mesonbuild/meson/issues/13499
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# - Nixpkgs stdenv buries the cc-wrapper under a giant pile of assumptions
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# about the cc-wrapper actually being used on the cc of a stdenv, rather than
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# independently for clang-tidy, and we need to use cc-wrapper to get the
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# correct hardening flags so that clang-tidy can actually parse the PCH file
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#
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# I give up. I am going to delete the damn PCH args and then it will work.
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meson.add_postconf_script(
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python,
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meson.current_source_dir() / 'clean_compdb.py',
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meson.global_build_root() / 'compile_commands.json',
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meson.current_build_dir() / 'compile_commands.json',
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)
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# Horrible hack to get around not being able to depend on another target's
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# generated headers in any way in the meson DSL
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# https://github.com/mesonbuild/meson/issues/12817 which was incorrectly
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# closed, if you *actually* need to generate the files once.
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# Also related: https://github.com/mesonbuild/meson/issues/3667
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#
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# Or we could ban meson generators because their design is broken.
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build_all_generated_headers = custom_target(
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command : [
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python,
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meson.current_source_dir() / 'build_required_targets.py',
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meson.global_build_root(),
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],
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output : 'generated_headers.stamp',
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build_by_default : false,
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build_always_stale : true,
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)
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if lix_clang_tidy_so_found
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default_concurrency = run_command(python, '-c', '''
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import multiprocessing
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import os
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print(min(multiprocessing.cpu_count(), int(os.environ.get("NIX_BUILD_CORES", "16"))))
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''', check : true).stdout()
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run_clang_tidy_args = [
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'-load',
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lix_clang_tidy_so,
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'-p',
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# We have to workaround a run-clang-tidy bug too, so we must give the
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# directory name rather than the actual compdb file.
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# https://github.com/llvm/llvm-project/issues/101440
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meson.current_build_dir(),
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'-quiet',
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'-j', default_concurrency,
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]
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run_target(
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'clang-tidy',
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command : [
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# XXX: This explicitly invokes it with python because of a nixpkgs bug
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# where clang-unwrapped does not patch interpreters in run-clang-tidy.
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# However, making clang-unwrapped depend on python is also silly, so idk.
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python,
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run_clang_tidy,
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run_clang_tidy_args,
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'-warnings-as-errors',
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'*',
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],
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depends : [
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build_all_generated_headers,
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],
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)
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run_target(
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'clang-tidy-fix',
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command : [
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python,
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run_clang_tidy,
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run_clang_tidy_args,
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'-fix',
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],
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depends : [
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build_all_generated_headers,
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],
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)
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endif
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