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CMake/Tests/RunCMake/CommandLine
Christian Walther 71a4e34d97 fileAPI: Expose CMAKE_<LANG>_COMPILER_ARG1
Compiler arguments coming from CC environment variables or multi-element
CMAKE_<LANG>_COMPILER variables set by toolchain files were previously not
exposed in the file API. Among other possible problems, this caused clients
to determine wrong system include paths and built-in preprocessor macros by
calling the compiler without these important arguments.

This is fixed by adding an optional "commandFragment" attribute to the
compiler description in the `toolchains` object, containing these arguments
as a command line fragment. This is already the form in which they are
internally stored in the CMAKE_<LANG>_COMPILER_ARG1 variable, so all that is
required is adding this variable to the set of exported variables, besides
some logic to omit it if empty.

Issue: #22568
2025-12-03 07:34:53 +11:00
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2023-05-30 09:46:12 -04:00