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Comparing libeio/libeio.m4 (file contents):
Revision 1.28 by root, Fri Sep 22 05:20:39 2017 UTC vs.
Revision 1.33 by root, Sun Mar 10 12:11:47 2019 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,
… …
37} 37}
38]])],ac_cv_futimes=yes,ac_cv_futimes=no)]) 38]])],ac_cv_futimes=yes,ac_cv_futimes=no)])
39test $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)
40 40
41AC_CACHE_CHECK(for readahead, ac_cv_readahead, [AC_LINK_IFELSE([AC_LANG_SOURCE([ 41AC_CACHE_CHECK(for readahead, ac_cv_readahead, [AC_LINK_IFELSE([AC_LANG_SOURCE([
42#include <sys/types.h>
42#include <fcntl.h> 43#include <fcntl.h>
43int main (void) 44int main (void)
44{ 45{
45 int fd = 0; 46 int fd = 0;
46 size_t count = 2; 47 size_t count = 2;
… …
91} 92}
92])],ac_cv_sendfile=yes,ac_cv_sendfile=no)]) 93])],ac_cv_sendfile=yes,ac_cv_sendfile=no)])
93test $ac_cv_sendfile = yes && AC_DEFINE(HAVE_SENDFILE, 1, sendfile(2) is available and supported) 94test $ac_cv_sendfile = yes && AC_DEFINE(HAVE_SENDFILE, 1, sendfile(2) is available and supported)
94 95
95AC_CACHE_CHECK(for sync_file_range, ac_cv_sync_file_range, [AC_LINK_IFELSE([AC_LANG_SOURCE([ 96AC_CACHE_CHECK(for sync_file_range, ac_cv_sync_file_range, [AC_LINK_IFELSE([AC_LANG_SOURCE([
97#include <sys/types.h>
96#include <fcntl.h> 98#include <fcntl.h>
97int main (void) 99int main (void)
98{ 100{
99 int fd = 0; 101 int fd = 0;
100 off64_t offset = 1; 102 off64_t offset = 1;
… …
140 int res = prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0); 142 int res = prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0);
141} 143}
142])],ac_cv_prctl_set_name=yes,ac_cv_prctl_set_name=no)]) 144])],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) 145test $ac_cv_prctl_set_name = yes && AC_DEFINE(HAVE_PRCTL_SET_NAME, 1, prctl(PR_SET_NAME) is available)
144 146
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([ 147AC_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> 148#include <unistd.h>
214int res; 149int res;
215int main (void) 150int main (void)
216{ 151{
217 res = pipe2 (0, 0); 152 res = posix_close (0, 0); /* we do not need any flags */
218 return 0; 153 return 0;
219} 154}
220]])],ac_cv_pipe2=yes,ac_cv_pipe2=no)]) 155]])],ac_cv_posix_close=yes,ac_cv_posix_close=no)])
221test $ac_cv_pipe2 = yes && AC_DEFINE(HAVE_PIPE2, 1, pipe2(2) is available) 156test $ac_cv_posix_close = yes && AC_DEFINE(HAVE_POSIX_CLOSE, 1, posix_close(2) is available)
222 157
223AC_CACHE_CHECK(for renameat2, ac_cv_renameat2, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ 158AC_CACHE_CHECK(for renameat2, ac_cv_renameat2, [AC_LINK_IFELSE([AC_LANG_SOURCE([[
224#include <unistd.h> 159#include <unistd.h>
225#include <sys/syscall.h> 160#include <sys/syscall.h>
226#include <linux/fs.h> 161#include <linux/fs.h>
… …
231 return 0; 166 return 0;
232} 167}
233]])],ac_cv_renameat2=yes,ac_cv_renameat2=no)]) 168]])],ac_cv_renameat2=yes,ac_cv_renameat2=no)])
234test $ac_cv_renameat2 = yes && AC_DEFINE(HAVE_RENAMEAT2, 1, renameat2(2) is available) 169test $ac_cv_renameat2 = yes && AC_DEFINE(HAVE_RENAMEAT2, 1, renameat2(2) is available)
235 170
236AC_CACHE_CHECK(for copy_file_range, ac_cv_copy_file_range, [AC_LINK_IFELSE([AC_LANG_SOURCE([[
237#include <unistd.h>
238#include <sys/syscall.h>
239/*#include <linux/copy.h>*/
240int res;
241int main (void)
242{
243 /*res = syscall (SYS_copy_file_range, 0, 0, 0, 0, 0, COPY_FR_REFLINK | COPY_FR_DEDUP | COPY_FR_COPY);*/
244 res = syscall (SYS_copy_file_range, 0, 0, 0, 0, 0, 0);
245 return 0;
246}
247]])],ac_cv_copy_file_range=yes,ac_cv_copy_file_range=no)])
248test $ac_cv_copy_file_range = yes && AC_DEFINE(HAVE_COPY_FILE_RANGE, 1, copy_file_range(2) is available)
249

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