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Comparing libeio/libeio.m4 (file contents):
Revision 1.12 by root, Thu Dec 2 10:04:48 2010 UTC vs.
Revision 1.15 by root, Thu Jul 7 22:37:11 2011 UTC

1dnl openbsd in it's neverending brokenness requires stdint.h for intptr_t,
2dnl but that header isn't very portable...
3AC_CHECK_HEADERS([stdint.h])
4
1AC_SEARCH_LIBS( 5AC_SEARCH_LIBS(
2 pthread_create, 6 pthread_create,
3 [pthread pthreads pthreadVC2], 7 [pthread pthreads pthreadVC2],
4 , 8 ,
5 [AC_MSG_ERROR(pthread functions not found)] 9 [AC_MSG_ERROR(pthread functions not found)]
117 return 0; 121 return 0;
118} 122}
119],ac_cv_sync_file_range=yes,ac_cv_sync_file_range=no)]) 123],ac_cv_sync_file_range=yes,ac_cv_sync_file_range=no)])
120test $ac_cv_sync_file_range = yes && AC_DEFINE(HAVE_SYNC_FILE_RANGE, 1, sync_file_range(2) is available) 124test $ac_cv_sync_file_range = yes && AC_DEFINE(HAVE_SYNC_FILE_RANGE, 1, sync_file_range(2) is available)
121 125
126AC_CACHE_CHECK(for fallocate, ac_cv_fallocate, [AC_LINK_IFELSE([
127#include <fcntl.h>
128int main (void)
129{
130 int fd = 0;
131 int mode = 0;
132 off_t offset = 1;
133 off_t len = 1;
134 int res;
135 res = fallocate (fd, mode, offset, len);
136 return 0;
137}
138],ac_cv_fallocate=yes,ac_cv_fallocate=no)])
139test $ac_cv_fallocate = yes && AC_DEFINE(HAVE_FALLOCATE, 1, fallocate(2) is available)
140
122dnl ############################################################################# 141dnl #############################################################################
123dnl # these checks exist for the benefit of IO::AIO 142dnl # these checks exist for the benefit of IO::AIO
124 143
125dnl at least uclibc defines _POSIX_ADVISORY_INFO without *any* of the required 144dnl at least uclibc defines _POSIX_ADVISORY_INFO without *any* of the required
126dnl functionality actually being present. ugh. 145dnl functionality actually being present. ugh.

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