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