diff options
Diffstat (limited to 'libeio.m4')
| -rw-r--r-- | libeio.m4 | 35 |
1 files changed, 35 insertions, 0 deletions
@@ -119,3 +119,38 @@ int main (void) ],ac_cv_sync_file_range=yes,ac_cv_sync_file_range=no)]) test $ac_cv_sync_file_range = yes && AC_DEFINE(HAVE_SYNC_FILE_RANGE, 1, sync_file_range(2) is available) +dnl ############################################################################# +dnl # these checks exist for the benefit of IO::AIO + +dnl at least uclibc defines _POSIX_ADVISORY_INFO without *any* of the required +dnl functionality actually being present. ugh. +AC_CACHE_CHECK(for posix_madvise, ac_cv_posix_madvise, [AC_LINK_IFELSE([ +#include <sys/mman.h> +int main (void) +{ + int res = posix_madvise ((void *)0, (size_t)0, POSIX_MADV_NORMAL); + int a = POSIX_MADV_SEQUENTIAL; + int b = POSIX_MADV_RANDOM; + int c = POSIX_MADV_WILLNEED; + int d = POSIX_MADV_DONTNEED; + return 0; +} +],ac_cv_posix_madvise=yes,ac_cv_posix_madvise=no)]) +test $ac_cv_posix_madvise = yes && AC_DEFINE(HAVE_POSIX_MADVISE, 1, posix_madvise(2) is available) + +AC_CACHE_CHECK(for posix_fadvise, ac_cv_posix_fadvise, [AC_LINK_IFELSE([ +#define _XOPEN_SOURCE 600 +#include <fcntl.h> +int main (void) +{ + int res = posix_fadvise ((int)0, (off_t)0, (off_t)0, POSIX_FADV_NORMAL); + int a = POSIX_FADV_SEQUENTIAL; + int b = POSIX_FADV_NOREUSE; + int c = POSIX_FADV_RANDOM; + int d = POSIX_FADV_WILLNEED; + int e = POSIX_FADV_DONTNEED; + return 0; +} +],ac_cv_posix_fadvise=yes,ac_cv_posix_fadvise=no)]) +test $ac_cv_posix_fadvise = yes && AC_DEFINE(HAVE_POSIX_FADVISE, 1, posix_fadvise(2) is available) + |