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| author | Marcus Haehnel <marcus.haehnel@kernkonzept.com> | 2024-07-09 10:05:31 +0200 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2024-07-09 14:04:49 +0200 |
| commit | 057913bc8cd35582ab3dcf7ccb08989f24fe3352 (patch) | |
| tree | cd4bbe61abcbc4ac2cd9c5b86ae76231ea0219a3 | |
| parent | 9827836ce5c6cf648a37202f7d5eb73af1667466 (diff) | |
features.h: add clang prerequisite macro
This can be used to guard features for specific clang versions.
Signed-off-by: Marcus Haehnel <marcus.haehnel@kernkonzept.com>
| -rw-r--r-- | include/features.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/features.h b/include/features.h index b5d4e79f2..1a4efb9db 100644 --- a/include/features.h +++ b/include/features.h @@ -140,6 +140,18 @@ # define __GNUC_PREREQ(maj, min) 0 #endif +/* Convenience macro to test the version of clang. + Use like this: + #if __CLANG_PREREQ(3,2) + ... code requiring clang 3.2 or later ... + #endif */ +#if defined __clang__ +# define __CLANG_PREREQ(maj, min) \ + ((__clang_major__ << 16) + __clang_minor__ >= ((maj) << 16) + (min)) +#else +# define __CLANG_PREREQ(maj, min) 0 +#endif + /* Whether to use feature set F. */ #define __GLIBC_USE(F) __GLIBC_USE_ ## F |