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| author | Sam James <sam@gentoo.org> | 2025-10-28 09:58:09 +0000 |
|---|---|---|
| committer | Eli Schwartz <eschwartz93@gmail.com> | 2025-10-31 01:24:46 -0400 |
| commit | 6ad2c919087c75254c8fe19b2a76102883358f1b (patch) | |
| tree | 863917aec101186976e25631f5bb9dc0aba31cb0 | |
| parent | 5403a9dea78eee5e42267aaeeb1609ec5c9db18a (diff) | |
| download | meson-6ad2c919087c75254c8fe19b2a76102883358f1b.tar.gz | |
compilers: cpp: explain more wrt GCC versions vs assertions
Bug: https://github.com/mesonbuild/meson/issues/13978
| -rw-r--r-- | mesonbuild/compilers/cpp.py | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/mesonbuild/compilers/cpp.py b/mesonbuild/compilers/cpp.py index 57da4dfae..47087b694 100644 --- a/mesonbuild/compilers/cpp.py +++ b/mesonbuild/compilers/cpp.py @@ -526,11 +526,15 @@ class GnuCPPCompiler(_StdCPPLibMixin, GnuCPPStds, GnuCompiler, CPPCompiler): if self.defines.get(macro) is not None: return [] + # For GCC, we can assume that the libstdc++ version is the same as + # the compiler itself. Anything else isn't supported. if self.language_stdlib_provider(env) == 'stdc++': return ['-D_GLIBCXX_ASSERTIONS=1'] else: # One can use -stdlib=libc++ with GCC, it just (as of 2025) requires - # an experimental configure arg to expose that. + # an experimental configure arg to expose that. libc++ supports "multiple" + # versions of GCC (only ever one version of GCC per libc++ version), but + # that is "multiple" for our purposes as we can't assume a mapping. if version_compare(self.version, '>=18'): return ['-D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_FAST'] |