diff options
| author | Jose Fonseca <[email protected]> | 2016-04-18 11:41:11 +0100 |
|---|---|---|
| committer | Jose Fonseca <[email protected]> | 2016-04-26 17:17:00 +0100 |
| commit | c068610a7df370af94fd6177598a35c4425a75f9 (patch) | |
| tree | f18989aea81a9711687987a5aabaaf147194cc45 /include/c99_compat.h | |
| parent | 940da2ce0ec989c8c8f1df2ad26f4a95014f4d08 (diff) | |
scons: Move fallback HAVE_* definitions to headers.
These were being defined in SCons, but it's not practical:
- we actually need to include Gallium headers from external source trees, with
completely disjoint build infrastructure, and it's unsustainable to
replicate the HAVE_xxx checks or even hard-coded defines across
everywhere.
- checking compiler version via command line doesn't really work due to
Clang essentially being like a cameleon which can fake either GCC or
MSVC
There's no change for autoconf.
Reviewed-by: Roland Scheidegger <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
Diffstat (limited to 'include/c99_compat.h')
| -rw-r--r-- | include/c99_compat.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/include/c99_compat.h b/include/c99_compat.h index b55ad9c181d..bfe655bb21b 100644 --- a/include/c99_compat.h +++ b/include/c99_compat.h @@ -135,4 +135,48 @@ test_c99_compat_h(const void * restrict a, #endif +/* Fallback definitions, for build systems other than autoconfig which don't + * auto-detect these things. */ +#ifdef HAVE_NO_AUTOCONF + +# ifndef _WIN32 +# define HAVE_PTHREAD +# define HAVE_POSIX_MEMALIGN +# endif + +# ifdef __GNUC__ +# if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 2) +# error "GCC version 4.2 or higher required" +# endif + + /* https://gcc.gnu.org/onlinedocs/gcc-4.2.4/gcc/Other-Builtins.html */ +# define HAVE___BUILTIN_CLZ 1 +# define HAVE___BUILTIN_CLZLL 1 +# define HAVE___BUILTIN_CTZ 1 +# define HAVE___BUILTIN_EXPECT 1 +# define HAVE___BUILTIN_FFS 1 +# define HAVE___BUILTIN_FFSLL 1 +# define HAVE___BUILTIN_POPCOUNT 1 +# define HAVE___BUILTIN_POPCOUNTLL 1 + /* https://gcc.gnu.org/onlinedocs/gcc-4.2.4/gcc/Function-Attributes.html */ +# define HAVE_FUNC_ATTRIBUTE_FLATTEN 1 +# define HAVE_FUNC_ATTRIBUTE_UNUSED 1 +# define HAVE_FUNC_ATTRIBUTE_FORMAT 1 +# define HAVE_FUNC_ATTRIBUTE_PACKED 1 + +# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) + /* https://gcc.gnu.org/onlinedocs/gcc-4.3.6/gcc/Other-Builtins.html */ +# define HAVE___BUILTIN_BSWAP32 1 +# define HAVE___BUILTIN_BSWAP64 1 +# endif + +# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5) +# define HAVE___BUILTIN_UNREACHABLE 1 +# endif + +# endif /* __GNUC__ */ + +#endif /* !HAVE_AUTOCONF */ + + #endif /* _C99_COMPAT_H_ */ |