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Comparing libeio/libeio.m4 (file contents):
Revision 1.11 by root, Wed Dec 1 07:30:39 2010 UTC vs.
Revision 1.20 by root, Sat Jun 2 20:13:26 2012 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)]
… …
56 return 0; 60 return 0;
57} 61}
58],ac_cv_fdatasync=yes,ac_cv_fdatasync=no)]) 62],ac_cv_fdatasync=yes,ac_cv_fdatasync=no)])
59test $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)
60 64
61AC_CACHE_CHECK(for pread and pwrite, ac_cv_preadwrite, [AC_LINK_IFELSE([
62#include <unistd.h>
63int main (void)
64{
65 int fd = 0;
66 size_t count = 1;
67 char buf;
68 off_t offset = 1;
69 ssize_t res;
70 res = pread (fd, &buf, count, offset);
71 res = pwrite (fd, &buf, count, offset);
72 return 0;
73}
74],ac_cv_preadwrite=yes,ac_cv_preadwrite=no)])
75test $ac_cv_preadwrite = yes && AC_DEFINE(HAVE_PREADWRITE, 1, pread(2) and pwrite(2) are available)
76
77AC_CACHE_CHECK(for sendfile, ac_cv_sendfile, [AC_LINK_IFELSE([ 65AC_CACHE_CHECK(for sendfile, ac_cv_sendfile, [AC_LINK_IFELSE([
78# include <sys/types.h> 66# include <sys/types.h>
79#if __linux 67#if __linux
80# include <sys/sendfile.h> 68# include <sys/sendfile.h>
81#elif __FreeBSD__ || defined __APPLE__ 69#elif __FreeBSD__ || defined __APPLE__
… …
117 return 0; 105 return 0;
118} 106}
119],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)])
120test $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)
121 109
110AC_CACHE_CHECK(for fallocate, ac_cv_linux_fallocate, [AC_LINK_IFELSE([
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([
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([
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
148dnl at least uclibc defines _POSIX_ADVISORY_INFO without *any* of the required
149dnl functionality actually being present. ugh.
150AC_CACHE_CHECK(for posix_madvise, ac_cv_posix_madvise, [AC_LINK_IFELSE([
151#include <sys/mman.h>
152int main (void)
153{
154 int res = posix_madvise ((void *)0, (size_t)0, POSIX_MADV_NORMAL);
155 int a = POSIX_MADV_SEQUENTIAL;
156 int b = POSIX_MADV_RANDOM;
157 int c = POSIX_MADV_WILLNEED;
158 int d = POSIX_MADV_DONTNEED;
159 return 0;
160}
161],ac_cv_posix_madvise=yes,ac_cv_posix_madvise=no)])
162test $ac_cv_posix_madvise = yes && AC_DEFINE(HAVE_POSIX_MADVISE, 1, posix_madvise(2) is available)
163
164AC_CACHE_CHECK(for posix_fadvise, ac_cv_posix_fadvise, [AC_LINK_IFELSE([
165#define _XOPEN_SOURCE 600
166#include <fcntl.h>
167int main (void)
168{
169 int res = posix_fadvise ((int)0, (off_t)0, (off_t)0, POSIX_FADV_NORMAL);
170 int a = POSIX_FADV_SEQUENTIAL;
171 int b = POSIX_FADV_NOREUSE;
172 int c = POSIX_FADV_RANDOM;
173 int d = POSIX_FADV_WILLNEED;
174 int e = POSIX_FADV_DONTNEED;
175 return 0;
176}
177],ac_cv_posix_fadvise=yes,ac_cv_posix_fadvise=no)])
178test $ac_cv_posix_fadvise = yes && AC_DEFINE(HAVE_POSIX_FADVISE, 1, posix_fadvise(2) is available)
179
180dnl lots of linux specifics
181AC_CHECK_HEADERS([linux/fs.h linux/fiemap.h])
182
183AC_CACHE_CHECK([for splice, vmsplice and tee], ac_cv_linux_splice, [AC_LINK_IFELSE([
184#include <fcntl.h>
185int main (void)
186{
187 ssize_t res;
188 res = splice ((int)0, (loff_t)0, (int)0, (loff_t *)0, (size_t)0, SPLICE_F_MOVE | SPLICE_F_NONBLOCK | SPLICE_F_MORE);
189 res = tee ((int)0, (int)0, (size_t)0, SPLICE_F_NONBLOCK);
190 res = vmsplice ((int)0, (struct iovec *)0, 0, SPLICE_F_NONBLOCK | SPLICE_F_GIFT);
191 return 0;
192}
193],ac_cv_linux_splice=yes,ac_cv_linux_splice=no)])
194test $ac_cv_linux_splice = yes && AC_DEFINE(HAVE_LINUX_SPLICE, 1, splice/vmsplice/tee(2) are available)
195

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