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Redo SIZEOF_OFF_T using __SIZEOF_SIZE_T__ instead of checking for CPUs

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Boris Kolpackov 2022-09-04 10:18:57 +02:00
parent a64598861f
commit 2062ab7e57
1 changed files with 7 additions and 2 deletions
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libbuild2-autoconf/libbuild2/autoconf/checks/SIZEOF_OFF_T.h
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@ -2,13 +2,18 @@
#undef SIZEOF_OFF_T
/* Note that the _FILE_OFFSET_BITS macro is expected to be defined by the
/* Use __SIZEOF_SIZE_T__ (defined by GCC and Clang and maybe others) to detect
* a 64-bit target.
*
* Note that the _FILE_OFFSET_BITS macro is expected to be defined by the
* user, for example, on the command line.
*/
#ifdef _MSC_VER
# define SIZEOF_OFF_T 4
#elif defined(__x86_64__) || defined(__ppc64__) || (defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS == 64)
#elif (defined(__SIZEOF_SIZE_T__) && __SIZEOF_SIZE_T__ == 8) || \
(defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS == 64)
# define SIZEOF_OFF_T 8
#else
# define SIZEOF_OFF_T 4