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Comparing libeio/libeio.m4 (file contents):
Revision 1.4 by root, Sun May 11 01:08:05 2008 UTC vs.
Revision 1.8 by root, Sat Jan 2 12:49:34 2010 UTC

… …
23AC_CACHE_CHECK(for readahead, ac_cv_readahead, [AC_LINK_IFELSE([ 23AC_CACHE_CHECK(for readahead, ac_cv_readahead, [AC_LINK_IFELSE([
24#include <fcntl.h> 24#include <fcntl.h>
25int main(void) 25int main(void)
26{ 26{
27 int fd = 0; 27 int fd = 0;
28 off64_t offset = 1;
29 size_t count = 2; 28 size_t count = 2;
30 ssize_t res; 29 ssize_t res;
31 res = readahead (fd, offset, count); 30 res = readahead (fd, 0, count);
32 return 0; 31 return 0;
33} 32}
34],ac_cv_readahead=yes,ac_cv_readahead=no)]) 33],ac_cv_readahead=yes,ac_cv_readahead=no)])
35test $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))
36 35
… …
59 return 0; 58 return 0;
60} 59}
61],ac_cv_preadwrite=yes,ac_cv_preadwrite=no)]) 60],ac_cv_preadwrite=yes,ac_cv_preadwrite=no)])
62test $ac_cv_preadwrite = yes && AC_DEFINE(HAVE_PREADWRITE, 1, pread(2) and pwrite(2) are available) 61test $ac_cv_preadwrite = yes && AC_DEFINE(HAVE_PREADWRITE, 1, pread(2) and pwrite(2) are available)
63 62
64AC_CACHE_CHECK(for readdir_r, ac_cv_readdir_r, [AC_LINK_IFELSE([
65#include <dirent.h>
66int main(void)
67{
68 DIR *dir = 0;
69 struct dirent ent, *eres;
70 int res = readdir_r (dir, &ent, &eres);
71 return 0;
72}
73],ac_cv_readdir_r=yes,ac_cv_readdir_r=no)])
74test $ac_cv_readdir_r = yes && AC_DEFINE(HAVE_READDIR_R, 1, readdir_r is available)
75
76AC_CACHE_CHECK(for sendfile, ac_cv_sendfile, [AC_LINK_IFELSE([ 63AC_CACHE_CHECK(for sendfile, ac_cv_sendfile, [AC_LINK_IFELSE([
77# include <sys/types.h> 64# include <sys/types.h>
78#if __linux 65#if __linux
79# include <sys/sendfile.h> 66# include <sys/sendfile.h>
80#elif __freebsd 67#elif __freebsd || defined __APPLE__
81# include <sys/socket.h> 68# include <sys/socket.h>
82# include <sys/uio.h> 69# include <sys/uio.h>
83#elif __hpux 70#elif __hpux
84# include <sys/socket.h> 71# include <sys/socket.h>
85#else 72#else
… …
101 return 0; 88 return 0;
102} 89}
103],ac_cv_sendfile=yes,ac_cv_sendfile=no)]) 90],ac_cv_sendfile=yes,ac_cv_sendfile=no)])
104test $ac_cv_sendfile = yes && AC_DEFINE(HAVE_SENDFILE, 1, sendfile(2) is available and supported) 91test $ac_cv_sendfile = yes && AC_DEFINE(HAVE_SENDFILE, 1, sendfile(2) is available and supported)
105 92
93AC_CACHE_CHECK(for sync_file_range, ac_cv_sync_file_range, [AC_LINK_IFELSE([
94#include <fcntl.h>
95int main(void)
96{
97 int fd = 0;
98 off64_t offset = 1;
99 off64_t nbytes = 1;
100 unsigned int flags = SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE|SYNC_FILE_RANGE_WAIT_AFTER;
101 ssize_t res;
102 res = sync_file_range (fd, offset, nbytes, flags);
103 return 0;
104}
105],ac_cv_sync_file_range=yes,ac_cv_sync_file_range=no)])
106test $ac_cv_sync_file_range = yes && AC_DEFINE(HAVE_SYNC_FILE_RANGE, 1, sync_file_range(2) is available)
107

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