| 422 |
|
dnl (end of code from openssh-3.2.2p1 configure.ac) |
| 423 |
|
|
| 424 |
|
|
| 425 |
+ |
dnl Check for systems where POSIX-style non-blocking I/O (O_NONBLOCK) |
| 426 |
+ |
dnl doesn't work or is unimplemented. On these systems (mostly older |
| 427 |
+ |
dnl ones), use the old BSD-style FIONBIO approach instead. [tcl.m4] |
| 428 |
+ |
AC_CACHE_CHECK([FIONBIO vs. O_NONBLOCK for non-blocking I/O], |
| 429 |
+ |
ac_cv_nonblocking_io, [ |
| 430 |
+ |
case "$host" in |
| 431 |
+ |
*-*-osf*) |
| 432 |
+ |
ac_cv_nonblocking_io=FIONBIO |
| 433 |
+ |
;; |
| 434 |
+ |
*-*-sunos4*) |
| 435 |
+ |
ac_cv_nonblocking_io=FIONBIO |
| 436 |
+ |
;; |
| 437 |
+ |
*-*-ultrix*) |
| 438 |
+ |
ac_cv_nonblocking_io=FIONBIO |
| 439 |
+ |
;; |
| 440 |
+ |
*) |
| 441 |
+ |
ac_cv_nonblocking_io=O_NONBLOCK |
| 442 |
+ |
;; |
| 443 |
+ |
esac |
| 444 |
+ |
]) |
| 445 |
+ |
if [[ "$ac_cv_nonblocking_io" = "FIONBIO" ]]; then |
| 446 |
+ |
AC_DEFINE(USE_FIONBIO, 1, [Define if BSD-style non-blocking I/O is to be used]) |
| 447 |
+ |
fi |
| 448 |
+ |
|
| 449 |
+ |
|
| 450 |
|
dnl AC_CHECK_FRAMEWORK($1=NAME, $2=INCLUDES) |
| 451 |
|
AC_DEFUN([AC_CHECK_FRAMEWORK], [ |
| 452 |
|
AS_VAR_PUSHDEF([ac_Framework], [ac_cv_framework_$1])dnl |
| 455 |
|
saved_LIBS="$LIBS" |
| 456 |
|
LIBS="$LIBS -framework $1" |
| 457 |
|
AC_TRY_LINK( |
| 458 |
< |
[$2], [int main(void) { return 0; }], |
| 458 |
> |
[$2], [], |
| 459 |
|
[AS_VAR_SET(ac_Framework, yes)], [AS_VAR_SET(ac_Framework, no); LIBS="$saved_LIBS"] |
| 460 |
|
) |
| 461 |
|
]) |
