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Comparing libeio/libeio.m4 (file contents):
Revision 1.31 by root, Tue Feb 20 05:23:47 2018 UTC vs.
Revision 1.32 by root, Sun Aug 12 04:15:05 2018 UTC

1dnl openbsd in it's neverending brokenness requires stdint.h for intptr_t, 1dnl openbsd in its neverending brokenness requires stdint.h for intptr_t,
2dnl but that header isn't very portable... 2dnl but that header isn't very portable...
3AC_CHECK_HEADERS([stdint.h sys/syscall.h sys/prctl.h]) 3AC_CHECK_HEADERS([stdint.h sys/syscall.h sys/prctl.h])
4 4
5AC_SEARCH_LIBS( 5AC_SEARCH_LIBS(
6 pthread_create, 6 pthread_create,
… …
140 int res = prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0); 140 int res = prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0);
141} 141}
142])],ac_cv_prctl_set_name=yes,ac_cv_prctl_set_name=no)]) 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) 143test $ac_cv_prctl_set_name = yes && AC_DEFINE(HAVE_PRCTL_SET_NAME, 1, prctl(PR_SET_NAME) is available)
144 144
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([ 145AC_CACHE_CHECK(for posix_close, ac_cv_posix_close, [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> 146#include <unistd.h>
214int res; 147int res;
215int main (void) 148int main (void)
216{ 149{
217 res = pipe2 (0, 0); 150 res = posix_close (0, 0); /* we do not need any flags */
218 return 0; 151 return 0;
219} 152}
220]])],ac_cv_pipe2=yes,ac_cv_pipe2=no)]) 153]])],ac_cv_posix_close=yes,ac_cv_posix_close=no)])
221test $ac_cv_pipe2 = yes && AC_DEFINE(HAVE_PIPE2, 1, pipe2(2) is available) 154test $ac_cv_posix_close = yes && AC_DEFINE(HAVE_POSIX_CLOSE, 1, posix_close(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)
247 155
248AC_CACHE_CHECK(for renameat2, ac_cv_renameat2, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ 156AC_CACHE_CHECK(for renameat2, ac_cv_renameat2, [AC_LINK_IFELSE([AC_LANG_SOURCE([[
249#include <unistd.h> 157#include <unistd.h>
250#include <sys/syscall.h> 158#include <sys/syscall.h>
251#include <linux/fs.h> 159#include <linux/fs.h>
… …
256 return 0; 164 return 0;
257} 165}
258]])],ac_cv_renameat2=yes,ac_cv_renameat2=no)]) 166]])],ac_cv_renameat2=yes,ac_cv_renameat2=no)])
259test $ac_cv_renameat2 = yes && AC_DEFINE(HAVE_RENAMEAT2, 1, renameat2(2) is available) 167test $ac_cv_renameat2 = yes && AC_DEFINE(HAVE_RENAMEAT2, 1, renameat2(2) is available)
260 168
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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