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- """
- Test suite for distutils.
- Tests for the command classes in the distutils.command package are
- included in distutils.tests as well, instead of using a separate
- distutils.command.tests package, since command identification is done
- by import rather than matching pre-defined names.
- """
- import shutil
- from collections.abc import Sequence
- def missing_compiler_executable(cmd_names: Sequence[str] = []): # pragma: no cover
- """Check if the compiler components used to build the interpreter exist.
- Check for the existence of the compiler executables whose names are listed
- in 'cmd_names' or all the compiler executables when 'cmd_names' is empty
- and return the first missing executable or None when none is found
- missing.
- """
- from distutils import ccompiler, errors, sysconfig
- compiler = ccompiler.new_compiler()
- sysconfig.customize_compiler(compiler)
- if compiler.compiler_type == "msvc":
- # MSVC has no executables, so check whether initialization succeeds
- try:
- compiler.initialize()
- except errors.DistutilsPlatformError:
- return "msvc"
- for name in compiler.executables:
- if cmd_names and name not in cmd_names:
- continue
- cmd = getattr(compiler, name)
- if cmd_names:
- assert cmd is not None, f"the '{name}' executable is not configured"
- elif not cmd:
- continue
- if shutil.which(cmd[0]) is None:
- return cmd[0]
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