clang-cl: supports /std:c++20 now.

See https://github.com/llvm/llvm-project/commit/a8f75d49
2 years ago · d573db77bc
parent 2c8c0f9586
commit d573db77bc
2 changed files with 4 additions and 1 deletions
--- a/docs/markdown/snippets/clang_cl_c++20.md
+++ b/docs/markdown/snippets/clang_cl_c++20.md
@ -0,0 +1,3 @@
+## `clang-cl` now accepts `cpp_std=c++20`
+
+Requires `clang-cl` 13 or later.
--- a/mesonbuild/compilers/cpp.py
+++ b/mesonbuild/compilers/cpp.py
@ -771,7 +771,7 @@ class ClangClCPPCompiler(CPP11AsCPP14Mixin, VisualStudioLikeCPPCompilerMixin, Cl
        ClangClCompiler.__init__(self, target)

    def get_options(self) -> 'MutableKeyedOptionDictType':
-        cpp_stds = ['none', 'c++11', 'vc++11', 'c++14', 'vc++14', 'c++17', 'vc++17', 'c++latest']
+        cpp_stds = ['none', 'c++11', 'vc++11', 'c++14', 'vc++14', 'c++17', 'vc++17', 'c++20', 'vc++20', 'c++latest']
        return self._get_options_impl(super().get_options(), cpp_stds)