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([[
#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([[
#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([
#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([
#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 pread and pwrite, ac_cv_preadwrite, [AC_LINK_IFELSE([
#include <unistd.h>
int main (void)
{
   int fd = 0;
   size_t count = 1;
   char buf;
   off_t offset = 1;
   ssize_t res;
   res = pread (fd, &buf, count, offset);
   res = pwrite (fd, &buf, count, offset);
   return 0;
}
],ac_cv_preadwrite=yes,ac_cv_preadwrite=no)])
test $ac_cv_preadwrite = yes && AC_DEFINE(HAVE_PREADWRITE, 1, pread(2) and pwrite(2) are available)

AC_CACHE_CHECK(for sendfile, ac_cv_sendfile, [AC_LINK_IFELSE([
# 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([
#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_flinux_allocate, [AC_LINK_IFELSE([
#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([
#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([
#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([
#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([
#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([
#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)

Revision:	1.18
Committed:	Tue Apr 10 05:01:34 2012 UTC (12 years, 1 month ago) by root
Branch:	MAIN
CVS Tags:	rel-4_15
Changes since 1.17:	+19 -3 lines
Log Message:	4.15
#	User	Rev	Content
1	root	1.13	dnl openbsd in it's neverending brokenness requires stdint.h for intptr_t,
2			dnl but that header isn't very portable...
3	root	1.17	AC_CHECK_HEADERS([stdint.h sys/syscall.h sys/prctl.h])
4	root	1.13
5	root	1.2	AC_SEARCH_LIBS(
6			pthread_create,
7			[pthread pthreads pthreadVC2],
8			,
9			[AC_MSG_ERROR(pthread functions not found)]
10			)
11
12	root	1.11	AC_CACHE_CHECK(for utimes, ac_cv_utimes, [AC_LINK_IFELSE([[
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	root	1.1	AC_CACHE_CHECK(for futimes, ac_cv_futimes, [AC_LINK_IFELSE([[
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	root	1.10	int main (void)
34	root	1.1	{
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([
42			#include <fcntl.h>
43	root	1.10	int main (void)
44	root	1.1	{
45			int fd = 0;
46			size_t count = 2;
47			ssize_t res;
48	root	1.5	res = readahead (fd, 0, count);
49	root	1.1	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([
55			#include <unistd.h>
56	root	1.10	int main (void)
57	root	1.1	{
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 pread and pwrite, ac_cv_preadwrite, [AC_LINK_IFELSE([
66			#include <unistd.h>
67	root	1.10	int main (void)
68	root	1.1	{
69			int fd = 0;
70			size_t count = 1;
71			char buf;
72			off_t offset = 1;
73			ssize_t res;
74			res = pread (fd, &buf, count, offset);
75			res = pwrite (fd, &buf, count, offset);
76			return 0;
77			}
78			],ac_cv_preadwrite=yes,ac_cv_preadwrite=no)])
79			test $ac_cv_preadwrite = yes && AC_DEFINE(HAVE_PREADWRITE, 1, pread(2) and pwrite(2) are available)
80
81			AC_CACHE_CHECK(for sendfile, ac_cv_sendfile, [AC_LINK_IFELSE([
82			# include <sys/types.h>
83			#if __linux
84			# include <sys/sendfile.h>
85	root	1.9	#elif __FreeBSD__ \|\| defined __APPLE__
86	root	1.1	# include <sys/socket.h>
87			# include <sys/uio.h>
88			#elif __hpux
89			# include <sys/socket.h>
90			#else
91			# error unsupported architecture
92			#endif
93	root	1.10	int main (void)
94	root	1.1	{
95			int fd = 0;
96			off_t offset = 1;
97			size_t count = 2;
98			ssize_t res;
99			#if __linux
100			res = sendfile (fd, fd, offset, count);
101	root	1.9	#elif __FreeBSD__
102	root	1.1	res = sendfile (fd, fd, offset, count, 0, &offset, 0);
103			#elif __hpux
104			res = sendfile (fd, fd, offset, count, 0, 0);
105			#endif
106			return 0;
107			}
108			],ac_cv_sendfile=yes,ac_cv_sendfile=no)])
109			test $ac_cv_sendfile = yes && AC_DEFINE(HAVE_SENDFILE, 1, sendfile(2) is available and supported)
110
111	root	1.7	AC_CACHE_CHECK(for sync_file_range, ac_cv_sync_file_range, [AC_LINK_IFELSE([
112			#include <fcntl.h>
113	root	1.10	int main (void)
114	root	1.7	{
115			int fd = 0;
116			off64_t offset = 1;
117			off64_t nbytes = 1;
118			unsigned int flags = SYNC_FILE_RANGE_WAIT_BEFORE\|SYNC_FILE_RANGE_WRITE\|SYNC_FILE_RANGE_WAIT_AFTER;
119			ssize_t res;
120			res = sync_file_range (fd, offset, nbytes, flags);
121			return 0;
122			}
123			],ac_cv_sync_file_range=yes,ac_cv_sync_file_range=no)])
124			test $ac_cv_sync_file_range = yes && AC_DEFINE(HAVE_SYNC_FILE_RANGE, 1, sync_file_range(2) is available)
125
126	root	1.18	AC_CACHE_CHECK(for fallocate, ac_cv_flinux_allocate, [AC_LINK_IFELSE([
127	root	1.14	#include <fcntl.h>
128			int main (void)
129			{
130			int fd = 0;
131	root	1.15	int mode = 0;
132	root	1.14	off_t offset = 1;
133			off_t len = 1;
134			int res;
135			res = fallocate (fd, mode, offset, len);
136			return 0;
137			}
138	root	1.18	],ac_cv_linux_fallocate=yes,ac_cv_linux_fallocate=no)])
139			test $ac_cv_linux_fallocate = yes && AC_DEFINE(HAVE_LINUX_FALLOCATE, 1, fallocate(2) is available)
140	root	1.14
141	root	1.16	AC_CACHE_CHECK(for sys_syncfs, ac_cv_sys_syncfs, [AC_LINK_IFELSE([
142			#include <unistd.h>
143			#include <sys/syscall.h>
144			int main (void)
145			{
146			int res = syscall (__NR_syncfs, (int)0);
147			}
148			],ac_cv_sys_syncfs=yes,ac_cv_sys_syncfs=no)])
149			test $ac_cv_sys_syncfs = yes && AC_DEFINE(HAVE_SYS_SYNCFS, 1, syscall(__NR_syncfs) is available)
150
151	root	1.17	AC_CACHE_CHECK(for prctl_set_name, ac_cv_prctl_set_name, [AC_LINK_IFELSE([
152			#include <sys/prctl.h>
153			int main (void)
154			{
155			char name[] = "test123";
156			int res = prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0);
157			}
158			],ac_cv_prctl_set_name=yes,ac_cv_prctl_set_name=no)])
159			test $ac_cv_prctl_set_name = yes && AC_DEFINE(HAVE_PRCTL_SET_NAME, 1, prctl(PR_SET_NAME) is available)
160
161	root	1.12	dnl #############################################################################
162			dnl # these checks exist for the benefit of IO::AIO
163
164			dnl at least uclibc defines _POSIX_ADVISORY_INFO without any of the required
165			dnl functionality actually being present. ugh.
166			AC_CACHE_CHECK(for posix_madvise, ac_cv_posix_madvise, [AC_LINK_IFELSE([
167			#include <sys/mman.h>
168			int main (void)
169			{
170			int res = posix_madvise ((void *)0, (size_t)0, POSIX_MADV_NORMAL);
171			int a = POSIX_MADV_SEQUENTIAL;
172			int b = POSIX_MADV_RANDOM;
173			int c = POSIX_MADV_WILLNEED;
174			int d = POSIX_MADV_DONTNEED;
175			return 0;
176			}
177			],ac_cv_posix_madvise=yes,ac_cv_posix_madvise=no)])
178			test $ac_cv_posix_madvise = yes && AC_DEFINE(HAVE_POSIX_MADVISE, 1, posix_madvise(2) is available)
179
180			AC_CACHE_CHECK(for posix_fadvise, ac_cv_posix_fadvise, [AC_LINK_IFELSE([
181			#define _XOPEN_SOURCE 600
182			#include <fcntl.h>
183			int main (void)
184			{
185			int res = posix_fadvise ((int)0, (off_t)0, (off_t)0, POSIX_FADV_NORMAL);
186			int a = POSIX_FADV_SEQUENTIAL;
187			int b = POSIX_FADV_NOREUSE;
188			int c = POSIX_FADV_RANDOM;
189			int d = POSIX_FADV_WILLNEED;
190			int e = POSIX_FADV_DONTNEED;
191			return 0;
192			}
193			],ac_cv_posix_fadvise=yes,ac_cv_posix_fadvise=no)])
194			test $ac_cv_posix_fadvise = yes && AC_DEFINE(HAVE_POSIX_FADVISE, 1, posix_fadvise(2) is available)
195
196	root	1.18	dnl lots of linux specifics
197			AC_CHECK_HEADERS([linux/fs.h linux/fiemap.h])
198
199			AC_CACHE_CHECK([for splice, vmsplice and tee], ac_cv_linux_splice, [AC_LINK_IFELSE([
200			#include <fcntl.h>
201			int main (void)
202			{
203			ssize_t res;
204			res = splice ((int)0, (loff_t)0, (int)0, (loff_t *)0, (size_t)0, SPLICE_F_MOVE \| SPLICE_F_NONBLOCK \| SPLICE_F_MORE);
205			res = tee ((int)0, (int)0, (size_t)0, SPLICE_F_NONBLOCK);
206			res = vmsplice ((int)0, (struct iovec *)0, 0, SPLICE_F_NONBLOCK \| SPLICE_F_GIFT);
207			return 0;
208			}
209			],ac_cv_linux_splice=yes,ac_cv_linux_splice=no)])
210			test $ac_cv_linux_splice = yes && AC_DEFINE(HAVE_LINUX_SPLICE, 1, splice/vmsplice/tee(2) are available)
211