diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/features.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/features.h b/include/features.h index 5bed0a4996..47eb58b825 100644 --- a/include/features.h +++ b/include/features.h @@ -364,6 +364,25 @@ # define __USE_FILE_OFFSET64 1 #endif +/* we need to know the word size in order to check the time size */ +#include <bits/wordsize.h> + +#if defined _TIME_BITS +# if _TIME_BITS == 64 +# if ! defined(_FILE_OFFSET_BITS) || _FILE_OFFSET_BITS != 64 +# error _TIME_BIT==64 is allowed only when _FILE_OFFSET_BITS==64 +# elif __WORDSIZE == 32 +# define __USE_TIME_BITS64 1 +# endif +# elif __TIME_BITS == 32 +# if __WORDSIZE > 32 +# error __TIME_BITS=32 is not compatible with __WORDSIZE > 32 +# endif +# else +# error Invalid _TIME_BITS value (can only be 32 or 64) +# endif +#endif + #if defined _DEFAULT_SOURCE # define __USE_MISC 1 #endif |