libeio/libeio.m4

dnl openbsd in it's neverending brokenness requires stdint.h for intptr_t,
dnl but that header isn't very portable...
AC_CHECK_HEADERS([stdint.h sys/syscall.h sys/prctl.h])

AC_SEARCH_LIBS(
   pthread_create,
   [pthread pthreads pthreadVC2],
   ,
   [AC_MSG_ERROR(pthread functions not found)]
)

AC_CACHE_CHECK(for utimes, ac_cv_utimes, [AC_LINK_IFELSE([AC_LANG_SOURCE([[
#include <sys/types.h>
#include <sys/time.h>
#include <utime.h>
struct timeval tv[2];
int res;
int main (void)
{
   res = utimes ("/", tv);
   return 0;
}
]])],ac_cv_utimes=yes,ac_cv_utimes=no)])
test $ac_cv_utimes = yes && AC_DEFINE(HAVE_UTIMES, 1, utimes(2) is available)

AC_CACHE_CHECK(for futimes, ac_cv_futimes, [AC_LINK_IFELSE([AC_LANG_SOURCE([[
#include <sys/types.h>
#include <sys/time.h>
#include <utime.h>
struct timeval tv[2];
int res;
int fd;
int main (void)
{
   res = futimes (fd, tv);
   return 0;
}
]])],ac_cv_futimes=yes,ac_cv_futimes=no)])
test $ac_cv_futimes = yes && AC_DEFINE(HAVE_FUTIMES, 1, futimes(2) is available)

AC_CACHE_CHECK(for readahead, ac_cv_readahead, [AC_LINK_IFELSE([AC_LANG_SOURCE([
#include <fcntl.h>
int main (void)
{
   int fd = 0;
   size_t count = 2;
   ssize_t res;
   res = readahead (fd, 0, count);
   return 0;
}
])],ac_cv_readahead=yes,ac_cv_readahead=no)])
test $ac_cv_readahead = yes && AC_DEFINE(HAVE_READAHEAD, 1, readahead(2) is available (linux))

AC_CACHE_CHECK(for fdatasync, ac_cv_fdatasync, [AC_LINK_IFELSE([AC_LANG_SOURCE([
#include <unistd.h>
int main (void)
{
   int fd = 0;
   fdatasync (fd);
   return 0;
}
])],ac_cv_fdatasync=yes,ac_cv_fdatasync=no)])
test $ac_cv_fdatasync = yes && AC_DEFINE(HAVE_FDATASYNC, 1, fdatasync(2) is available)

AC_CACHE_CHECK(for sendfile, ac_cv_sendfile, [AC_LINK_IFELSE([AC_LANG_SOURCE([
# include <sys/types.h>
#if __linux
# include <sys/sendfile.h>
#elif __FreeBSD__ || defined __APPLE__
# include <sys/socket.h>
# include <sys/uio.h>
#elif __hpux
# include <sys/socket.h>
#else
# error unsupported architecture
#endif
int main (void)
{
   int fd = 0;
   off_t offset = 1;
   size_t count = 2;
   ssize_t res;
#if __linux
   res = sendfile (fd, fd, &offset, count);
#elif __FreeBSD__
   res = sendfile (fd, fd, offset, count, 0, &offset, 0);
#elif __hpux
   res = sendfile (fd, fd, offset, count, 0, 0);
#endif
   return 0;
}
])],ac_cv_sendfile=yes,ac_cv_sendfile=no)])
test $ac_cv_sendfile = yes && AC_DEFINE(HAVE_SENDFILE, 1, sendfile(2) is available and supported)

AC_CACHE_CHECK(for sync_file_range, ac_cv_sync_file_range, [AC_LINK_IFELSE([AC_LANG_SOURCE([
#include <fcntl.h>
int main (void)
{
   int fd = 0;
   off64_t offset = 1;
   off64_t nbytes = 1;
   unsigned int flags = SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE|SYNC_FILE_RANGE_WAIT_AFTER;
   ssize_t res;
   res = sync_file_range (fd, offset, nbytes, flags);
   return 0;
}
])],ac_cv_sync_file_range=yes,ac_cv_sync_file_range=no)])
test $ac_cv_sync_file_range = yes && AC_DEFINE(HAVE_SYNC_FILE_RANGE, 1, sync_file_range(2) is available)

AC_CACHE_CHECK(for fallocate, ac_cv_linux_fallocate, [AC_LINK_IFELSE([AC_LANG_SOURCE([
#include <fcntl.h>
int main (void)
{
   int fd = 0;
   int mode = 0;
   off_t offset = 1;
   off_t len = 1;
   int res;
   res = fallocate (fd, mode, offset, len);
   return 0;
}
])],ac_cv_linux_fallocate=yes,ac_cv_linux_fallocate=no)])
test $ac_cv_linux_fallocate = yes && AC_DEFINE(HAVE_LINUX_FALLOCATE, 1, fallocate(2) is available)

AC_CACHE_CHECK(for sys_syncfs, ac_cv_sys_syncfs, [AC_LINK_IFELSE([AC_LANG_SOURCE([
#include <unistd.h>
#include <sys/syscall.h>
int main (void)
{
  int res = syscall (__NR_syncfs, (int)0);
}
])],ac_cv_sys_syncfs=yes,ac_cv_sys_syncfs=no)])
test $ac_cv_sys_syncfs = yes && AC_DEFINE(HAVE_SYS_SYNCFS, 1, syscall(__NR_syncfs) is available)

AC_CACHE_CHECK(for prctl_set_name, ac_cv_prctl_set_name, [AC_LINK_IFELSE([AC_LANG_SOURCE([
#include <sys/prctl.h>
int main (void)
{
  char *name = "test123";
  int res = prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0);
}
])],ac_cv_prctl_set_name=yes,ac_cv_prctl_set_name=no)])
test $ac_cv_prctl_set_name = yes && AC_DEFINE(HAVE_PRCTL_SET_NAME, 1, prctl(PR_SET_NAME) is available)

dnl #############################################################################
dnl # these checks exist for the benefit of IO::AIO

dnl at least uclibc defines _POSIX_ADVISORY_INFO without *any* of the required
dnl functionality actually being present. ugh.
AC_CACHE_CHECK(for posix_madvise, ac_cv_posix_madvise, [AC_LINK_IFELSE([AC_LANG_SOURCE([
#include <sys/mman.h>
int main (void)
{
   int res = posix_madvise ((void *)0, (size_t)0, POSIX_MADV_NORMAL);
   int a = POSIX_MADV_SEQUENTIAL;
   int b = POSIX_MADV_RANDOM;
   int c = POSIX_MADV_WILLNEED;
   int d = POSIX_MADV_DONTNEED;
   return 0;
}
])],ac_cv_posix_madvise=yes,ac_cv_posix_madvise=no)])
test $ac_cv_posix_madvise = yes && AC_DEFINE(HAVE_POSIX_MADVISE, 1, posix_madvise(2) is available)

AC_CACHE_CHECK(for posix_fadvise, ac_cv_posix_fadvise, [AC_LINK_IFELSE([AC_LANG_SOURCE([
#define _XOPEN_SOURCE 600
#include <fcntl.h>
int main (void)
{
   int res = posix_fadvise ((int)0, (off_t)0, (off_t)0, POSIX_FADV_NORMAL);
   int a = POSIX_FADV_SEQUENTIAL;
   int b = POSIX_FADV_NOREUSE;
   int c = POSIX_FADV_RANDOM;
   int d = POSIX_FADV_WILLNEED;
   int e = POSIX_FADV_DONTNEED;
   return 0;
}
])],ac_cv_posix_fadvise=yes,ac_cv_posix_fadvise=no)])
test $ac_cv_posix_fadvise = yes && AC_DEFINE(HAVE_POSIX_FADVISE, 1, posix_fadvise(2) is available)

dnl lots of linux specifics
AC_CHECK_HEADERS([linux/fs.h linux/fiemap.h])

AC_CACHE_CHECK([for splice, vmsplice and tee], ac_cv_linux_splice, [AC_LINK_IFELSE([AC_LANG_SOURCE([
#include <fcntl.h>
int main (void)
{
   ssize_t res;
   res = splice ((int)0, (loff_t)0, (int)0, (loff_t *)0, (size_t)0, SPLICE_F_MOVE | SPLICE_F_NONBLOCK | SPLICE_F_MORE);
   res = tee ((int)0, (int)0, (size_t)0, SPLICE_F_NONBLOCK);
   res = vmsplice ((int)0, (struct iovec *)0, 0, SPLICE_F_NONBLOCK | SPLICE_F_GIFT);
   return 0;
}
])],ac_cv_linux_splice=yes,ac_cv_linux_splice=no)])
test $ac_cv_linux_splice = yes && AC_DEFINE(HAVE_LINUX_SPLICE, 1, splice/vmsplice/tee(2) are available)

AC_CACHE_CHECK(for pipe2, ac_cv_pipe2, [AC_LINK_IFELSE([AC_LANG_SOURCE([[
#include <fcntl.h>
#include <unistd.h>
int res;
int main (void)
{
   res = pipe2 (0, 0);
   return 0;
}
]])],ac_cv_pipe2=yes,ac_cv_pipe2=no)])
test $ac_cv_pipe2 = yes && AC_DEFINE(HAVE_PIPE2, 1, pipe2(2) is available)

AC_CACHE_CHECK(for renameat2, ac_cv_renameat2, [AC_LINK_IFELSE([AC_LANG_SOURCE([[
#include <unistd.h>
#include <sys/syscall.h>
#include <linux/fs.h>
int res;
int main (void)
{
   res = syscall (SYS_renameat2, 0, 0, 0, 0, RENAME_EXCHANGE | RENAME_NOREPLACE);
   return 0;
}
]])],ac_cv_renameat2=yes,ac_cv_renameat2=no)])
test $ac_cv_renameat2 = yes && AC_DEFINE(HAVE_RENAMEAT2, 1, renameat2(2) is available)

Revision:	1.24
Committed:	Fri Jun 23 03:10:19 2017 UTC (6 years, 10 months ago) by root
Branch:	MAIN
Changes since 1.23:	+15 -2 lines
Log Message:	* empty log message *
#	Content
1	dnl openbsd in it's neverending brokenness requires stdint.h for intptr_t,
2	dnl but that header isn't very portable...
3	AC_CHECK_HEADERS([stdint.h sys/syscall.h sys/prctl.h])
4
5	AC_SEARCH_LIBS(
6	pthread_create,
7	[pthread pthreads pthreadVC2],
8	,
9	[AC_MSG_ERROR(pthread functions not found)]
10	)
11
12	AC_CACHE_CHECK(for utimes, ac_cv_utimes, [AC_LINK_IFELSE([AC_LANG_SOURCE([[
13	#include <sys/types.h>
14	#include <sys/time.h>
15	#include <utime.h>
16	struct timeval tv[2];
17	int res;
18	int main (void)
19	{
20	res = utimes ("/", tv);
21	return 0;
22	}
23	]])],ac_cv_utimes=yes,ac_cv_utimes=no)])
24	test $ac_cv_utimes = yes && AC_DEFINE(HAVE_UTIMES, 1, utimes(2) is available)
25
26	AC_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>
30	struct timeval tv[2];
31	int res;
32	int fd;
33	int main (void)
34	{
35	res = futimes (fd, tv);
36	return 0;
37	}
38	]])],ac_cv_futimes=yes,ac_cv_futimes=no)])
39	test $ac_cv_futimes = yes && AC_DEFINE(HAVE_FUTIMES, 1, futimes(2) is available)
40
41	AC_CACHE_CHECK(for readahead, ac_cv_readahead, [AC_LINK_IFELSE([AC_LANG_SOURCE([
42	#include <fcntl.h>
43	int main (void)
44	{
45	int fd = 0;
46	size_t count = 2;
47	ssize_t res;
48	res = readahead (fd, 0, count);
49	return 0;
50	}
51	])],ac_cv_readahead=yes,ac_cv_readahead=no)])
52	test $ac_cv_readahead = yes && AC_DEFINE(HAVE_READAHEAD, 1, readahead(2) is available (linux))
53
54	AC_CACHE_CHECK(for fdatasync, ac_cv_fdatasync, [AC_LINK_IFELSE([AC_LANG_SOURCE([
55	#include <unistd.h>
56	int main (void)
57	{
58	int fd = 0;
59	fdatasync (fd);
60	return 0;
61	}
62	])],ac_cv_fdatasync=yes,ac_cv_fdatasync=no)])
63	test $ac_cv_fdatasync = yes && AC_DEFINE(HAVE_FDATASYNC, 1, fdatasync(2) is available)
64
65	AC_CACHE_CHECK(for sendfile, ac_cv_sendfile, [AC_LINK_IFELSE([AC_LANG_SOURCE([
66	# include <sys/types.h>
67	#if __linux
68	# include <sys/sendfile.h>
69	#elif __FreeBSD__ \|\| defined __APPLE__
70	# include <sys/socket.h>
71	# include <sys/uio.h>
72	#elif __hpux
73	# include <sys/socket.h>
74	#else
75	# error unsupported architecture
76	#endif
77	int main (void)
78	{
79	int fd = 0;
80	off_t offset = 1;
81	size_t count = 2;
82	ssize_t res;
83	#if __linux
84	res = sendfile (fd, fd, &offset, count);
85	#elif __FreeBSD__
86	res = sendfile (fd, fd, offset, count, 0, &offset, 0);
87	#elif __hpux
88	res = sendfile (fd, fd, offset, count, 0, 0);
89	#endif
90	return 0;
91	}
92	])],ac_cv_sendfile=yes,ac_cv_sendfile=no)])
93	test $ac_cv_sendfile = yes && AC_DEFINE(HAVE_SENDFILE, 1, sendfile(2) is available and supported)
94
95	AC_CACHE_CHECK(for sync_file_range, ac_cv_sync_file_range, [AC_LINK_IFELSE([AC_LANG_SOURCE([
96	#include <fcntl.h>
97	int main (void)
98	{
99	int fd = 0;
100	off64_t offset = 1;
101	off64_t nbytes = 1;
102	unsigned int flags = SYNC_FILE_RANGE_WAIT_BEFORE\|SYNC_FILE_RANGE_WRITE\|SYNC_FILE_RANGE_WAIT_AFTER;
103	ssize_t res;
104	res = sync_file_range (fd, offset, nbytes, flags);
105	return 0;
106	}
107	])],ac_cv_sync_file_range=yes,ac_cv_sync_file_range=no)])
108	test $ac_cv_sync_file_range = yes && AC_DEFINE(HAVE_SYNC_FILE_RANGE, 1, sync_file_range(2) is available)
109
110	AC_CACHE_CHECK(for fallocate, ac_cv_linux_fallocate, [AC_LINK_IFELSE([AC_LANG_SOURCE([
111	#include <fcntl.h>
112	int 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)])
123	test $ac_cv_linux_fallocate = yes && AC_DEFINE(HAVE_LINUX_FALLOCATE, 1, fallocate(2) is available)
124
125	AC_CACHE_CHECK(for sys_syncfs, ac_cv_sys_syncfs, [AC_LINK_IFELSE([AC_LANG_SOURCE([
126	#include <unistd.h>
127	#include <sys/syscall.h>
128	int main (void)
129	{
130	int res = syscall (__NR_syncfs, (int)0);
131	}
132	])],ac_cv_sys_syncfs=yes,ac_cv_sys_syncfs=no)])
133	test $ac_cv_sys_syncfs = yes && AC_DEFINE(HAVE_SYS_SYNCFS, 1, syscall(__NR_syncfs) is available)
134
135	AC_CACHE_CHECK(for prctl_set_name, ac_cv_prctl_set_name, [AC_LINK_IFELSE([AC_LANG_SOURCE([
136	#include <sys/prctl.h>
137	int 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)])
143	test $ac_cv_prctl_set_name = yes && AC_DEFINE(HAVE_PRCTL_SET_NAME, 1, prctl(PR_SET_NAME) is available)
144
145	dnl #############################################################################
146	dnl # these checks exist for the benefit of IO::AIO
147
148	dnl at least uclibc defines _POSIX_ADVISORY_INFO without any of the required
149	dnl functionality actually being present. ugh.
150	AC_CACHE_CHECK(for posix_madvise, ac_cv_posix_madvise, [AC_LINK_IFELSE([AC_LANG_SOURCE([
151	#include <sys/mman.h>
152	int 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)])
162	test $ac_cv_posix_madvise = yes && AC_DEFINE(HAVE_POSIX_MADVISE, 1, posix_madvise(2) is available)
163
164	AC_CACHE_CHECK(for posix_fadvise, ac_cv_posix_fadvise, [AC_LINK_IFELSE([AC_LANG_SOURCE([
165	#define _XOPEN_SOURCE 600
166	#include <fcntl.h>
167	int 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)])
178	test $ac_cv_posix_fadvise = yes && AC_DEFINE(HAVE_POSIX_FADVISE, 1, posix_fadvise(2) is available)
179
180	dnl lots of linux specifics
181	AC_CHECK_HEADERS([linux/fs.h linux/fiemap.h])
182
183	AC_CACHE_CHECK([for splice, vmsplice and tee], ac_cv_linux_splice, [AC_LINK_IFELSE([AC_LANG_SOURCE([
184	#include <fcntl.h>
185	int 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)])
194	test $ac_cv_linux_splice = yes && AC_DEFINE(HAVE_LINUX_SPLICE, 1, splice/vmsplice/tee(2) are available)
195
196	AC_CACHE_CHECK(for pipe2, ac_cv_pipe2, [AC_LINK_IFELSE([AC_LANG_SOURCE([[
197	#include <fcntl.h>
198	#include <unistd.h>
199	int res;
200	int main (void)
201	{
202	res = pipe2 (0, 0);
203	return 0;
204	}
205	]])],ac_cv_pipe2=yes,ac_cv_pipe2=no)])
206	test $ac_cv_pipe2 = yes && AC_DEFINE(HAVE_PIPE2, 1, pipe2(2) is available)
207
208	AC_CACHE_CHECK(for renameat2, ac_cv_renameat2, [AC_LINK_IFELSE([AC_LANG_SOURCE([[
209	#include <unistd.h>
210	#include <sys/syscall.h>
211	#include <linux/fs.h>
212	int res;
213	int main (void)
214	{
215	res = syscall (SYS_renameat2, 0, 0, 0, 0, RENAME_EXCHANGE \| RENAME_NOREPLACE);
216	return 0;
217	}
218	]])],ac_cv_renameat2=yes,ac_cv_renameat2=no)])
219	test $ac_cv_renameat2 = yes && AC_DEFINE(HAVE_RENAMEAT2, 1, renameat2(2) is available)
220