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Comparing libeio/libeio.m4 (file contents):
Revision 1.1 by root, Sun May 11 00:06:25 2008 UTC vs.
Revision 1.5 by root, Mon May 12 00:31:43 2008 UTC

1AC_SEARCH_LIBS(
2 pthread_create,
3 [pthread pthreads pthreadVC2],
4 ,
5 [AC_MSG_ERROR(pthread functions not found)]
6)
7
1AC_CACHE_CHECK(for futimes, ac_cv_futimes, [AC_LINK_IFELSE([[ 8AC_CACHE_CHECK(for futimes, ac_cv_futimes, [AC_LINK_IFELSE([[
2#include <sys/types.h> 9#include <sys/types.h>
3#include <sys/time.h> 10#include <sys/time.h>
4#include <utime.h> 11#include <utime.h>
5struct timeval tv[2]; 12struct timeval tv[2];
… …
16AC_CACHE_CHECK(for readahead, ac_cv_readahead, [AC_LINK_IFELSE([ 23AC_CACHE_CHECK(for readahead, ac_cv_readahead, [AC_LINK_IFELSE([
17#include <fcntl.h> 24#include <fcntl.h>
18int main(void) 25int main(void)
19{ 26{
20 int fd = 0; 27 int fd = 0;
21 off64_t offset = 1;
22 size_t count = 2; 28 size_t count = 2;
23 ssize_t res; 29 ssize_t res;
24 res = readahead (fd, offset, count); 30 res = readahead (fd, 0, count);
25 return 0; 31 return 0;
26} 32}
27],ac_cv_readahead=yes,ac_cv_readahead=no)]) 33],ac_cv_readahead=yes,ac_cv_readahead=no)])
28test $ac_cv_readahead = yes && AC_DEFINE(HAVE_READAHEAD, 1, readahead(2) is available (linux)) 34test $ac_cv_readahead = yes && AC_DEFINE(HAVE_READAHEAD, 1, readahead(2) is available (linux))
29 35

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