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Comparing libeio/libeio.m4 (file contents):
Revision 1.7 by root, Wed Oct 22 18:15:36 2008 UTC vs.
Revision 1.31 by root, Tue Feb 20 05:23:47 2018 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 sys/syscall.h sys/prctl.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)]
6) 10)
7 11
8AC_CACHE_CHECK(for futimes, ac_cv_futimes, [AC_LINK_IFELSE([[ 12AC_CACHE_CHECK(for utimes, ac_cv_utimes, [AC_LINK_IFELSE([AC_LANG_SOURCE([[
9#include <sys/types.h> 13#include <sys/types.h>
10#include <sys/time.h> 14#include <sys/time.h>
11#include <utime.h> 15#include <utime.h>
12struct timeval tv[2]; 16struct timeval tv[2];
13int res; 17int res;
18int main (void)
19{
20 res = utimes ("/", tv);
21 return 0;
22}
23]])],ac_cv_utimes=yes,ac_cv_utimes=no)])
24test $ac_cv_utimes = yes && AC_DEFINE(HAVE_UTIMES, 1, utimes(2) is available)
25
26AC_CACHE_CHECK(for futimes, ac_cv_futimes, [AC_LINK_IFELSE([AC_LANG_SOURCE([[
27#include <sys/types.h>
28#include <sys/time.h>
29#include <utime.h>
30struct timeval tv[2];
31int res;
14int fd; 32int fd;
15int main(void) 33int main (void)
16{ 34{
17 res = futimes (fd, tv); 35 res = futimes (fd, tv);
18 return 0; 36 return 0;
19} 37}
20]],ac_cv_futimes=yes,ac_cv_futimes=no)]) 38]])],ac_cv_futimes=yes,ac_cv_futimes=no)])
21test $ac_cv_futimes = yes && AC_DEFINE(HAVE_FUTIMES, 1, futimes(2) is available) 39test $ac_cv_futimes = yes && AC_DEFINE(HAVE_FUTIMES, 1, futimes(2) is available)
22 40
23AC_CACHE_CHECK(for readahead, ac_cv_readahead, [AC_LINK_IFELSE([ 41AC_CACHE_CHECK(for readahead, ac_cv_readahead, [AC_LINK_IFELSE([AC_LANG_SOURCE([
24#include <fcntl.h> 42#include <fcntl.h>
25int main(void) 43int main (void)
26{ 44{
27 int fd = 0; 45 int fd = 0;
28 size_t count = 2; 46 size_t count = 2;
29 ssize_t res; 47 ssize_t res;
30 res = readahead (fd, 0, count); 48 res = readahead (fd, 0, count);
31 return 0; 49 return 0;
32} 50}
33],ac_cv_readahead=yes,ac_cv_readahead=no)]) 51])],ac_cv_readahead=yes,ac_cv_readahead=no)])
34test $ac_cv_readahead = yes && AC_DEFINE(HAVE_READAHEAD, 1, readahead(2) is available (linux)) 52test $ac_cv_readahead = yes && AC_DEFINE(HAVE_READAHEAD, 1, readahead(2) is available (linux))
35 53
36AC_CACHE_CHECK(for fdatasync, ac_cv_fdatasync, [AC_LINK_IFELSE([ 54AC_CACHE_CHECK(for fdatasync, ac_cv_fdatasync, [AC_LINK_IFELSE([AC_LANG_SOURCE([
37#include <unistd.h> 55#include <unistd.h>
38int main(void) 56int main (void)
39{ 57{
40 int fd = 0; 58 int fd = 0;
41 fdatasync (fd); 59 fdatasync (fd);
42 return 0; 60 return 0;
43} 61}
44],ac_cv_fdatasync=yes,ac_cv_fdatasync=no)]) 62])],ac_cv_fdatasync=yes,ac_cv_fdatasync=no)])
45test $ac_cv_fdatasync = yes && AC_DEFINE(HAVE_FDATASYNC, 1, fdatasync(2) is available) 63test $ac_cv_fdatasync = yes && AC_DEFINE(HAVE_FDATASYNC, 1, fdatasync(2) is available)
46 64
47AC_CACHE_CHECK(for pread and pwrite, ac_cv_preadwrite, [AC_LINK_IFELSE([
48#include <unistd.h>
49int main(void)
50{
51 int fd = 0;
52 size_t count = 1;
53 char buf;
54 off_t offset = 1;
55 ssize_t res;
56 res = pread (fd, &buf, count, offset);
57 res = pwrite (fd, &buf, count, offset);
58 return 0;
59}
60],ac_cv_preadwrite=yes,ac_cv_preadwrite=no)])
61test $ac_cv_preadwrite = yes && AC_DEFINE(HAVE_PREADWRITE, 1, pread(2) and pwrite(2) are available)
62
63AC_CACHE_CHECK(for sendfile, ac_cv_sendfile, [AC_LINK_IFELSE([ 65AC_CACHE_CHECK(for sendfile, ac_cv_sendfile, [AC_LINK_IFELSE([AC_LANG_SOURCE([
64# include <sys/types.h> 66# include <sys/types.h>
65#if __linux 67#if __linux
66# include <sys/sendfile.h> 68# include <sys/sendfile.h>
67#elif __freebsd 69#elif __FreeBSD__ || defined __APPLE__
68# include <sys/socket.h> 70# include <sys/socket.h>
69# include <sys/uio.h> 71# include <sys/uio.h>
70#elif __hpux 72#elif __hpux
71# include <sys/socket.h> 73# include <sys/socket.h>
72#else 74#else
73# error unsupported architecture 75# error unsupported architecture
74#endif 76#endif
75int main(void) 77int main (void)
76{ 78{
77 int fd = 0; 79 int fd = 0;
78 off_t offset = 1; 80 off_t offset = 1;
79 size_t count = 2; 81 size_t count = 2;
80 ssize_t res; 82 ssize_t res;
81#if __linux 83#if __linux
82 res = sendfile (fd, fd, offset, count); 84 res = sendfile (fd, fd, &offset, count);
83#elif __freebsd 85#elif __FreeBSD__
84 res = sendfile (fd, fd, offset, count, 0, &offset, 0); 86 res = sendfile (fd, fd, offset, count, 0, &offset, 0);
85#elif __hpux 87#elif __hpux
86 res = sendfile (fd, fd, offset, count, 0, 0); 88 res = sendfile (fd, fd, offset, count, 0, 0);
87#endif 89#endif
88 return 0; 90 return 0;
89} 91}
90],ac_cv_sendfile=yes,ac_cv_sendfile=no)]) 92])],ac_cv_sendfile=yes,ac_cv_sendfile=no)])
91test $ac_cv_sendfile = yes && AC_DEFINE(HAVE_SENDFILE, 1, sendfile(2) is available and supported) 93test $ac_cv_sendfile = yes && AC_DEFINE(HAVE_SENDFILE, 1, sendfile(2) is available and supported)
92 94
93AC_CACHE_CHECK(for sync_file_range, ac_cv_sync_file_range, [AC_LINK_IFELSE([ 95AC_CACHE_CHECK(for sync_file_range, ac_cv_sync_file_range, [AC_LINK_IFELSE([AC_LANG_SOURCE([
94#include <fcntl.h> 96#include <fcntl.h>
95int main(void) 97int main (void)
96{ 98{
97 int fd = 0; 99 int fd = 0;
98 off64_t offset = 1; 100 off64_t offset = 1;
99 off64_t nbytes = 1; 101 off64_t nbytes = 1;
100 unsigned int flags = SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE|SYNC_FILE_RANGE_WAIT_AFTER; 102 unsigned int flags = SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE|SYNC_FILE_RANGE_WAIT_AFTER;
101 ssize_t res; 103 ssize_t res;
102 res = sync_file_range (fd, offset, nbytes, flags); 104 res = sync_file_range (fd, offset, nbytes, flags);
103 return 0; 105 return 0;
104} 106}
105],ac_cv_sync_file_range=yes,ac_cv_sync_file_range=no)]) 107])],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) 108test $ac_cv_sync_file_range = yes && AC_DEFINE(HAVE_SYNC_FILE_RANGE, 1, sync_file_range(2) is available)
107 109
110AC_CACHE_CHECK(for fallocate, ac_cv_linux_fallocate, [AC_LINK_IFELSE([AC_LANG_SOURCE([
111#include <fcntl.h>
112int main (void)
113{
114 int fd = 0;
115 int mode = 0;
116 off_t offset = 1;
117 off_t len = 1;
118 int res;
119 res = fallocate (fd, mode, offset, len);
120 return 0;
121}
122])],ac_cv_linux_fallocate=yes,ac_cv_linux_fallocate=no)])
123test $ac_cv_linux_fallocate = yes && AC_DEFINE(HAVE_LINUX_FALLOCATE, 1, fallocate(2) is available)
124
125AC_CACHE_CHECK(for sys_syncfs, ac_cv_sys_syncfs, [AC_LINK_IFELSE([AC_LANG_SOURCE([
126#include <unistd.h>
127#include <sys/syscall.h>
128int main (void)
129{
130 int res = syscall (__NR_syncfs, (int)0);
131}
132])],ac_cv_sys_syncfs=yes,ac_cv_sys_syncfs=no)])
133test $ac_cv_sys_syncfs = yes && AC_DEFINE(HAVE_SYS_SYNCFS, 1, syscall(__NR_syncfs) is available)
134
135AC_CACHE_CHECK(for prctl_set_name, ac_cv_prctl_set_name, [AC_LINK_IFELSE([AC_LANG_SOURCE([
136#include <sys/prctl.h>
137int main (void)
138{
139 char *name = "test123";
140 int res = prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0);
141}
142])],ac_cv_prctl_set_name=yes,ac_cv_prctl_set_name=no)])
143test $ac_cv_prctl_set_name = yes && AC_DEFINE(HAVE_PRCTL_SET_NAME, 1, prctl(PR_SET_NAME) is available)
144
145dnl #############################################################################
146dnl # these checks exist for the benefit of IO::AIO
147
148AC_CACHE_CHECK(for set/getrlimit, ac_cv_rlimits, [AC_LINK_IFELSE([AC_LANG_SOURCE([[
149#include <sys/time.h>
150#include <sys/resource.h>
151int res;
152int main (void)
153{
154 struct rlimit srl;
155 srl.rlim_cur = srl.rlim_max = RLIM_INFINITY;
156 res = getrlimit (RLIMIT_NOFILE, &srl);
157 res = setrlimit (RLIMIT_NOFILE, &srl);
158 return 0;
159}
160]])],ac_cv_rlimits=yes,ac_cv_rlimits=no)])
161test $ac_cv_rlimits = yes && AC_DEFINE(HAVE_RLIMITS, 1, setrlimit/getrlimit is available)
162
163dnl at least uclibc defines _POSIX_ADVISORY_INFO without *any* of the required
164dnl functionality actually being present. ugh.
165AC_CACHE_CHECK(for posix_madvise, ac_cv_posix_madvise, [AC_LINK_IFELSE([AC_LANG_SOURCE([
166#include <sys/mman.h>
167int main (void)
168{
169 int res = posix_madvise ((void *)0, (size_t)0, POSIX_MADV_NORMAL);
170 int a = POSIX_MADV_SEQUENTIAL;
171 int b = POSIX_MADV_RANDOM;
172 int c = POSIX_MADV_WILLNEED;
173 int d = POSIX_MADV_DONTNEED;
174 return 0;
175}
176])],ac_cv_posix_madvise=yes,ac_cv_posix_madvise=no)])
177test $ac_cv_posix_madvise = yes && AC_DEFINE(HAVE_POSIX_MADVISE, 1, posix_madvise(2) is available)
178
179AC_CACHE_CHECK(for posix_fadvise, ac_cv_posix_fadvise, [AC_LINK_IFELSE([AC_LANG_SOURCE([
180#define _XOPEN_SOURCE 600
181#include <fcntl.h>
182int main (void)
183{
184 int res = posix_fadvise ((int)0, (off_t)0, (off_t)0, POSIX_FADV_NORMAL);
185 int a = POSIX_FADV_SEQUENTIAL;
186 int b = POSIX_FADV_NOREUSE;
187 int c = POSIX_FADV_RANDOM;
188 int d = POSIX_FADV_WILLNEED;
189 int e = POSIX_FADV_DONTNEED;
190 return 0;
191}
192])],ac_cv_posix_fadvise=yes,ac_cv_posix_fadvise=no)])
193test $ac_cv_posix_fadvise = yes && AC_DEFINE(HAVE_POSIX_FADVISE, 1, posix_fadvise(2) is available)
194
195dnl lots of linux specifics
196AC_CHECK_HEADERS([linux/fs.h linux/fiemap.h])
197
198AC_CACHE_CHECK([for splice, vmsplice and tee], ac_cv_linux_splice, [AC_LINK_IFELSE([AC_LANG_SOURCE([
199#include <fcntl.h>
200int main (void)
201{
202 ssize_t res;
203 res = splice ((int)0, (loff_t)0, (int)0, (loff_t *)0, (size_t)0, SPLICE_F_MOVE | SPLICE_F_NONBLOCK | SPLICE_F_MORE);
204 res = tee ((int)0, (int)0, (size_t)0, SPLICE_F_NONBLOCK);
205 res = vmsplice ((int)0, (struct iovec *)0, 0, SPLICE_F_NONBLOCK | SPLICE_F_GIFT);
206 return 0;
207}
208])],ac_cv_linux_splice=yes,ac_cv_linux_splice=no)])
209test $ac_cv_linux_splice = yes && AC_DEFINE(HAVE_LINUX_SPLICE, 1, splice/vmsplice/tee(2) are available)
210
211AC_CACHE_CHECK(for pipe2, ac_cv_pipe2, [AC_LINK_IFELSE([AC_LANG_SOURCE([[
212#include <fcntl.h>
213#include <unistd.h>
214int res;
215int main (void)
216{
217 res = pipe2 (0, 0);
218 return 0;
219}
220]])],ac_cv_pipe2=yes,ac_cv_pipe2=no)])
221test $ac_cv_pipe2 = yes && AC_DEFINE(HAVE_PIPE2, 1, pipe2(2) is available)
222
223AC_CACHE_CHECK(for eventfd, ac_cv_eventfd, [AC_LINK_IFELSE([AC_LANG_SOURCE([[
224#include <sys/eventfd.h>
225int res;
226int main (void)
227{
228 res = eventfd (1, EFD_CLOEXEC | EFD_NONBLOCK);
229 return 0;
230}
231]])],ac_cv_eventfd=yes,ac_cv_eventfd=no)])
232test $ac_cv_eventfd = yes && AC_DEFINE(HAVE_EVENTFD, 1, eventfd(2) is available)
233
234AC_CACHE_CHECK(for timerfd, ac_cv_timerfd, [AC_LINK_IFELSE([AC_LANG_SOURCE([[
235#include <sys/timerfd.h>
236int res;
237int main (void)
238{
239 struct itimerspec its;
240 res = timerfd_create (CLOCK_REALTIME, TFD_CLOEXEC | TFD_NONBLOCK);
241 res = timerfd_settime (res, TFD_TIMER_ABSTIME /*| TFD_TIMER_CANCEL_ON_SET*/, &its, 0);
242 res = timerfd_gettime (res, &its);
243 return 0;
244}
245]])],ac_cv_timerfd=yes,ac_cv_timerfd=no)])
246test $ac_cv_timerfd = yes && AC_DEFINE(HAVE_TIMERFD, 1, timerfd_*(2) are available)
247
248AC_CACHE_CHECK(for renameat2, ac_cv_renameat2, [AC_LINK_IFELSE([AC_LANG_SOURCE([[
249#include <unistd.h>
250#include <sys/syscall.h>
251#include <linux/fs.h>
252int res;
253int main (void)
254{
255 res = syscall (SYS_renameat2, 0, 0, 0, 0, RENAME_EXCHANGE | RENAME_NOREPLACE);
256 return 0;
257}
258]])],ac_cv_renameat2=yes,ac_cv_renameat2=no)])
259test $ac_cv_renameat2 = yes && AC_DEFINE(HAVE_RENAMEAT2, 1, renameat2(2) is available)
260
261AC_CACHE_CHECK(for copy_file_range, ac_cv_copy_file_range, [AC_LINK_IFELSE([AC_LANG_SOURCE([[
262#include <unistd.h>
263#include <sys/syscall.h>
264/*#include <linux/copy.h>*/
265int res;
266int main (void)
267{
268 /*res = syscall (SYS_copy_file_range, 0, 0, 0, 0, 0, COPY_FR_REFLINK | COPY_FR_DEDUP | COPY_FR_COPY);*/
269 res = syscall (SYS_copy_file_range, 0, 0, 0, 0, 0, 0);
270 return 0;
271}
272]])],ac_cv_copy_file_range=yes,ac_cv_copy_file_range=no)])
273test $ac_cv_copy_file_range = yes && AC_DEFINE(HAVE_COPY_FILE_RANGE, 1, copy_file_range(2) is available)
274
275AC_CACHE_CHECK(for posix_close, ac_cv_posix_close, [AC_LINK_IFELSE([AC_LANG_SOURCE([[
276#include <unistd.h>
277int res;
278int main (void)
279{
280 res = posix_close (0, 0); /* we do not need any flags */
281 return 0;
282}
283]])],ac_cv_posix_close=yes,ac_cv_posix_close=no)])
284test $ac_cv_posix_close = yes && AC_DEFINE(HAVE_POSIX_CLOSE, 1, posix_close(2) is available)
285

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