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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 |
|
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AC_SEARCH_LIBS( |
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pthread_create, |
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[pthread pthreads pthreadVC2], |
8 |
, |
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[AC_MSG_ERROR(pthread functions not found)] |
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) |
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|
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AC_CACHE_CHECK(for utimes, ac_cv_utimes, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
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#include <sys/types.h> |
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#include <sys/time.h> |
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#include <utime.h> |
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struct timeval tv[2]; |
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int res; |
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int main (void) |
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{ |
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res = utimes ("/", tv); |
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return 0; |
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} |
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]])],ac_cv_utimes=yes,ac_cv_utimes=no)]) |
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test $ac_cv_utimes = yes && AC_DEFINE(HAVE_UTIMES, 1, utimes(2) is available) |
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|
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AC_CACHE_CHECK(for futimes, ac_cv_futimes, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
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#include <sys/types.h> |
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#include <sys/time.h> |
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#include <utime.h> |
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struct timeval tv[2]; |
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int res; |
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int fd; |
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int main (void) |
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{ |
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res = futimes (fd, tv); |
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return 0; |
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} |
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]])],ac_cv_futimes=yes,ac_cv_futimes=no)]) |
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test $ac_cv_futimes = yes && AC_DEFINE(HAVE_FUTIMES, 1, futimes(2) is available) |
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|
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AC_CACHE_CHECK(for readahead, ac_cv_readahead, [AC_LINK_IFELSE([AC_LANG_SOURCE([ |
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#include <fcntl.h> |
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int main (void) |
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{ |
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int fd = 0; |
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size_t count = 2; |
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ssize_t res; |
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res = readahead (fd, 0, count); |
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return 0; |
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} |
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])],ac_cv_readahead=yes,ac_cv_readahead=no)]) |
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test $ac_cv_readahead = yes && AC_DEFINE(HAVE_READAHEAD, 1, readahead(2) is available (linux)) |
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|
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AC_CACHE_CHECK(for fdatasync, ac_cv_fdatasync, [AC_LINK_IFELSE([AC_LANG_SOURCE([ |
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#include <unistd.h> |
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int main (void) |
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{ |
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int fd = 0; |
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fdatasync (fd); |
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return 0; |
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} |
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])],ac_cv_fdatasync=yes,ac_cv_fdatasync=no)]) |
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test $ac_cv_fdatasync = yes && AC_DEFINE(HAVE_FDATASYNC, 1, fdatasync(2) is available) |
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|
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AC_CACHE_CHECK(for sendfile, ac_cv_sendfile, [AC_LINK_IFELSE([AC_LANG_SOURCE([ |
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# include <sys/types.h> |
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#if __linux |
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# include <sys/sendfile.h> |
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#elif __FreeBSD__ || defined __APPLE__ |
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# include <sys/socket.h> |
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# include <sys/uio.h> |
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#elif __hpux |
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# include <sys/socket.h> |
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#else |
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# error unsupported architecture |
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#endif |
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int main (void) |
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{ |
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int fd = 0; |
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off_t offset = 1; |
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size_t count = 2; |
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ssize_t res; |
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#if __linux |
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res = sendfile (fd, fd, &offset, count); |
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#elif __FreeBSD__ |
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res = sendfile (fd, fd, offset, count, 0, &offset, 0); |
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#elif __hpux |
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res = sendfile (fd, fd, offset, count, 0, 0); |
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#endif |
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return 0; |
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} |
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])],ac_cv_sendfile=yes,ac_cv_sendfile=no)]) |
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test $ac_cv_sendfile = yes && AC_DEFINE(HAVE_SENDFILE, 1, sendfile(2) is available and supported) |
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|
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AC_CACHE_CHECK(for sync_file_range, ac_cv_sync_file_range, [AC_LINK_IFELSE([AC_LANG_SOURCE([ |
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#include <fcntl.h> |
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int main (void) |
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{ |
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int fd = 0; |
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off64_t offset = 1; |
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off64_t nbytes = 1; |
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unsigned int flags = SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE|SYNC_FILE_RANGE_WAIT_AFTER; |
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ssize_t res; |
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res = sync_file_range (fd, offset, nbytes, flags); |
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return 0; |
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} |
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])],ac_cv_sync_file_range=yes,ac_cv_sync_file_range=no)]) |
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test $ac_cv_sync_file_range = yes && AC_DEFINE(HAVE_SYNC_FILE_RANGE, 1, sync_file_range(2) is available) |
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|
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AC_CACHE_CHECK(for fallocate, ac_cv_linux_fallocate, [AC_LINK_IFELSE([AC_LANG_SOURCE([ |
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#include <fcntl.h> |
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int main (void) |
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{ |
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int fd = 0; |
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int mode = 0; |
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off_t offset = 1; |
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off_t len = 1; |
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int res; |
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res = fallocate (fd, mode, offset, len); |
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return 0; |
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} |
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])],ac_cv_linux_fallocate=yes,ac_cv_linux_fallocate=no)]) |
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test $ac_cv_linux_fallocate = yes && AC_DEFINE(HAVE_LINUX_FALLOCATE, 1, fallocate(2) is available) |
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|
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AC_CACHE_CHECK(for sys_syncfs, ac_cv_sys_syncfs, [AC_LINK_IFELSE([AC_LANG_SOURCE([ |
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#include <unistd.h> |
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#include <sys/syscall.h> |
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int main (void) |
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{ |
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int res = syscall (__NR_syncfs, (int)0); |
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} |
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])],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) |
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|
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AC_CACHE_CHECK(for prctl_set_name, ac_cv_prctl_set_name, [AC_LINK_IFELSE([AC_LANG_SOURCE([ |
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#include <sys/prctl.h> |
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int main (void) |
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{ |
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char *name = "test123"; |
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int res = prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0); |
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} |
142 |
])],ac_cv_prctl_set_name=yes,ac_cv_prctl_set_name=no)]) |
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test $ac_cv_prctl_set_name = yes && AC_DEFINE(HAVE_PRCTL_SET_NAME, 1, prctl(PR_SET_NAME) is available) |
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|
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dnl ############################################################################# |
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dnl # these checks exist for the benefit of IO::AIO |
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|
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AC_CACHE_CHECK(for set/getrlimit, ac_cv_rlimits, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
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#include <sys/time.h> |
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#include <sys/resource.h> |
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int res; |
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int main (void) |
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{ |
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struct rlimit srl; |
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srl.rlim_cur = srl.rlim_max = RLIM_INFINITY; |
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res = getrlimit (RLIMIT_NOFILE, &srl); |
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res = setrlimit (RLIMIT_NOFILE, &srl); |
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return 0; |
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} |
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]])],ac_cv_rlimits=yes,ac_cv_rlimits=no)]) |
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test $ac_cv_rlimits = yes && AC_DEFINE(HAVE_RLIMITS, 1, setrlimit/getrlimit is available) |
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|
163 |
dnl at least uclibc defines _POSIX_ADVISORY_INFO without *any* of the required |
164 |
dnl functionality actually being present. ugh. |
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AC_CACHE_CHECK(for posix_madvise, ac_cv_posix_madvise, [AC_LINK_IFELSE([AC_LANG_SOURCE([ |
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#include <sys/mman.h> |
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int main (void) |
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{ |
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int res = posix_madvise ((void *)0, (size_t)0, POSIX_MADV_NORMAL); |
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int a = POSIX_MADV_SEQUENTIAL; |
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int b = POSIX_MADV_RANDOM; |
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int c = POSIX_MADV_WILLNEED; |
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int d = POSIX_MADV_DONTNEED; |
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return 0; |
175 |
} |
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])],ac_cv_posix_madvise=yes,ac_cv_posix_madvise=no)]) |
177 |
test $ac_cv_posix_madvise = yes && AC_DEFINE(HAVE_POSIX_MADVISE, 1, posix_madvise(2) is available) |
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|
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AC_CACHE_CHECK(for posix_fadvise, ac_cv_posix_fadvise, [AC_LINK_IFELSE([AC_LANG_SOURCE([ |
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#define _XOPEN_SOURCE 600 |
181 |
#include <fcntl.h> |
182 |
int main (void) |
183 |
{ |
184 |
int res = posix_fadvise ((int)0, (off_t)0, (off_t)0, POSIX_FADV_NORMAL); |
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int a = POSIX_FADV_SEQUENTIAL; |
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int b = POSIX_FADV_NOREUSE; |
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int c = POSIX_FADV_RANDOM; |
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int d = POSIX_FADV_WILLNEED; |
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int e = POSIX_FADV_DONTNEED; |
190 |
return 0; |
191 |
} |
192 |
])],ac_cv_posix_fadvise=yes,ac_cv_posix_fadvise=no)]) |
193 |
test $ac_cv_posix_fadvise = yes && AC_DEFINE(HAVE_POSIX_FADVISE, 1, posix_fadvise(2) is available) |
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|
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dnl lots of linux specifics |
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AC_CHECK_HEADERS([linux/fs.h linux/fiemap.h]) |
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|
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AC_CACHE_CHECK([for splice, vmsplice and tee], ac_cv_linux_splice, [AC_LINK_IFELSE([AC_LANG_SOURCE([ |
199 |
#include <fcntl.h> |
200 |
int main (void) |
201 |
{ |
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ssize_t res; |
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res = splice ((int)0, (loff_t)0, (int)0, (loff_t *)0, (size_t)0, SPLICE_F_MOVE | SPLICE_F_NONBLOCK | SPLICE_F_MORE); |
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res = tee ((int)0, (int)0, (size_t)0, SPLICE_F_NONBLOCK); |
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res = vmsplice ((int)0, (struct iovec *)0, 0, SPLICE_F_NONBLOCK | SPLICE_F_GIFT); |
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return 0; |
207 |
} |
208 |
])],ac_cv_linux_splice=yes,ac_cv_linux_splice=no)]) |
209 |
test $ac_cv_linux_splice = yes && AC_DEFINE(HAVE_LINUX_SPLICE, 1, splice/vmsplice/tee(2) are available) |
210 |
|
211 |
AC_CACHE_CHECK(for pipe2, ac_cv_pipe2, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
212 |
#include <fcntl.h> |
213 |
#include <unistd.h> |
214 |
int res; |
215 |
int main (void) |
216 |
{ |
217 |
res = pipe2 (0, 0); |
218 |
return 0; |
219 |
} |
220 |
]])],ac_cv_pipe2=yes,ac_cv_pipe2=no)]) |
221 |
test $ac_cv_pipe2 = yes && AC_DEFINE(HAVE_PIPE2, 1, pipe2(2) is available) |
222 |
|
223 |
AC_CACHE_CHECK(for eventfd, ac_cv_eventfd, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
224 |
#include <sys/eventfd.h> |
225 |
int res; |
226 |
int main (void) |
227 |
{ |
228 |
res = eventfd (1, EFD_CLOEXEC | EFD_NONBLOCK); |
229 |
return 0; |
230 |
} |
231 |
]])],ac_cv_eventfd=yes,ac_cv_eventfd=no)]) |
232 |
test $ac_cv_eventfd = yes && AC_DEFINE(HAVE_EVENTFD, 1, eventfd(2) is available) |
233 |
|
234 |
AC_CACHE_CHECK(for timerfd, ac_cv_timerfd, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
235 |
#include <sys/timerfd.h> |
236 |
int res; |
237 |
int main (void) |
238 |
{ |
239 |
struct itimerspec its; |
240 |
res = timerfd_create (CLOCK_REALTIME, TFD_CLOEXEC | TFD_NONBLOCK); |
241 |
res = timerfd_settime (res, TFD_TIMER_ABSTIME /*| TFD_TIMER_CANCEL_ON_SET*/, &its, 0); |
242 |
res = timerfd_gettime (res, &its); |
243 |
return 0; |
244 |
} |
245 |
]])],ac_cv_timerfd=yes,ac_cv_timerfd=no)]) |
246 |
test $ac_cv_timerfd = yes && AC_DEFINE(HAVE_TIMERFD, 1, timerfd_*(2) are available) |
247 |
|
248 |
AC_CACHE_CHECK(for renameat2, ac_cv_renameat2, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
249 |
#include <unistd.h> |
250 |
#include <sys/syscall.h> |
251 |
#include <linux/fs.h> |
252 |
int res; |
253 |
int main (void) |
254 |
{ |
255 |
res = syscall (SYS_renameat2, 0, 0, 0, 0, RENAME_EXCHANGE | RENAME_NOREPLACE); |
256 |
return 0; |
257 |
} |
258 |
]])],ac_cv_renameat2=yes,ac_cv_renameat2=no)]) |
259 |
test $ac_cv_renameat2 = yes && AC_DEFINE(HAVE_RENAMEAT2, 1, renameat2(2) is available) |
260 |
|
261 |
AC_CACHE_CHECK(for copy_file_range, ac_cv_copy_file_range, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
262 |
#include <unistd.h> |
263 |
#include <sys/syscall.h> |
264 |
/*#include <linux/copy.h>*/ |
265 |
int res; |
266 |
int main (void) |
267 |
{ |
268 |
/*res = syscall (SYS_copy_file_range, 0, 0, 0, 0, 0, COPY_FR_REFLINK | COPY_FR_DEDUP | COPY_FR_COPY);*/ |
269 |
res = syscall (SYS_copy_file_range, 0, 0, 0, 0, 0, 0); |
270 |
return 0; |
271 |
} |
272 |
]])],ac_cv_copy_file_range=yes,ac_cv_copy_file_range=no)]) |
273 |
test $ac_cv_copy_file_range = yes && AC_DEFINE(HAVE_COPY_FILE_RANGE, 1, copy_file_range(2) is available) |
274 |
|
275 |
AC_CACHE_CHECK(for posix_close, ac_cv_posix_close, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
276 |
#include <unistd.h> |
277 |
int res; |
278 |
int main (void) |
279 |
{ |
280 |
res = posix_close (0, 0); /* we do not need any flags */ |
281 |
return 0; |
282 |
} |
283 |
]])],ac_cv_posix_close=yes,ac_cv_posix_close=no)]) |
284 |
test $ac_cv_posix_close = yes && AC_DEFINE(HAVE_POSIX_CLOSE, 1, posix_close(2) is available) |
285 |
|