| 432 |
|
) |
| 433 |
|
dnl (end of code from openssh-3.2.2p1 configure.ac) |
| 434 |
|
|
| 435 |
+ |
dnl Check for systems where POSIX-style non-blocking I/O (O_NONBLOCK) |
| 436 |
+ |
dnl doesn't work or is unimplemented. On these systems (mostly older |
| 437 |
+ |
dnl ones), use the old BSD-style FIONBIO approach instead. [tcl.m4] |
| 438 |
+ |
AC_CACHE_CHECK([FIONBIO vs. O_NONBLOCK for non-blocking I/O], |
| 439 |
+ |
ac_cv_nonblocking_io, [ |
| 440 |
+ |
case "$host" in |
| 441 |
+ |
*-*-osf*) |
| 442 |
+ |
ac_cv_nonblocking_io=FIONBIO |
| 443 |
+ |
;; |
| 444 |
+ |
*-*-sunos4*) |
| 445 |
+ |
ac_cv_nonblocking_io=FIONBIO |
| 446 |
+ |
;; |
| 447 |
+ |
*-*-ultrix*) |
| 448 |
+ |
ac_cv_nonblocking_io=FIONBIO |
| 449 |
+ |
;; |
| 450 |
+ |
*) |
| 451 |
+ |
ac_cv_nonblocking_io=O_NONBLOCK |
| 452 |
+ |
;; |
| 453 |
+ |
esac |
| 454 |
+ |
]) |
| 455 |
+ |
if [[ "$ac_cv_nonblocking_io" = "FIONBIO" ]]; then |
| 456 |
+ |
AC_DEFINE(USE_FIONBIO, 1, [Define if BSD-style non-blocking I/O is to be used]) |
| 457 |
+ |
fi |
| 458 |
+ |
|
| 459 |
+ |
dnl Check whether compiler supports byte bit-fields |
| 460 |
+ |
AC_CACHE_CHECK([whether compiler supports byte bit-fields], |
| 461 |
+ |
ac_cv_have_byte_bitfields, [ |
| 462 |
+ |
AC_LANG_SAVE |
| 463 |
+ |
AC_LANG_CPLUSPLUS |
| 464 |
+ |
AC_TRY_RUN([ |
| 465 |
+ |
struct A { |
| 466 |
+ |
unsigned char b1:4; |
| 467 |
+ |
unsigned char b2:4; |
| 468 |
+ |
unsigned char c; |
| 469 |
+ |
unsigned short s; |
| 470 |
+ |
unsigned char a[4]; |
| 471 |
+ |
}; |
| 472 |
+ |
|
| 473 |
+ |
int main(void) { |
| 474 |
+ |
A a; |
| 475 |
+ |
return ! (sizeof(A) == 8 && &a.c == ((unsigned char *)&a + 1)); |
| 476 |
+ |
}], |
| 477 |
+ |
[ac_cv_have_byte_bitfields=yes], |
| 478 |
+ |
[ac_cv_have_byte_bitfields=no], |
| 479 |
+ |
dnl When cross-compiling, assume only GCC supports this |
| 480 |
+ |
[if [[ "$GCC" = "yes" ]]; then |
| 481 |
+ |
ac_cv_have_byte_bitfields="guessing yes" |
| 482 |
+ |
else |
| 483 |
+ |
ac_cv_have_byte_bitfields="guessing no" |
| 484 |
+ |
fi] |
| 485 |
+ |
) |
| 486 |
+ |
AC_LANG_RESTORE |
| 487 |
+ |
]) |
| 488 |
+ |
|
| 489 |
|
dnl AC_CHECK_FRAMEWORK($1=NAME, $2=INCLUDES) |
| 490 |
< |
AC_DEFUN(AC_CHECK_FRAMEWORK, [ |
| 490 |
> |
AC_DEFUN([AC_CHECK_FRAMEWORK], [ |
| 491 |
|
AS_VAR_PUSHDEF([ac_Framework], [ac_cv_framework_$1])dnl |
| 492 |
|
AC_CACHE_CHECK([whether compiler supports framework $1], |
| 493 |
|
ac_Framework, [ |
| 547 |
|
fi |
| 548 |
|
;; |
| 549 |
|
irix*) |
| 496 |
– |
ETHERSRC=ether_unix.cpp |
| 550 |
|
AUDIOSRC=Irix/audio_irix.cpp |
| 551 |
|
LIBS="$LIBS -laudio" |
| 552 |
|
WANT_ESD=no |
| 565 |
|
esac |
| 566 |
|
|
| 567 |
|
dnl Is the slirp library supported? |
| 568 |
< |
if [[ "x$ETHERSRC" = "xether_unix.cpp" ]]; then |
| 568 |
> |
case "$ac_cv_have_byte_bitfields" in |
| 569 |
> |
yes|"guessing yes") |
| 570 |
> |
CAN_SLIRP=yes |
| 571 |
> |
ETHERSRC=ether_unix.cpp |
| 572 |
> |
;; |
| 573 |
> |
esac |
| 574 |
> |
if [[ -n "$CAN_SLIRP" ]]; then |
| 575 |
|
AC_DEFINE(HAVE_SLIRP, 1, [Define if slirp library is supported]) |
| 576 |
|
SLIRP_SRCS="\ |
| 577 |
|
../slirp/bootp.c ../slirp/ip_output.c ../slirp/tcp_input.c \ |
| 613 |
|
dnl $1 -- the macro to define |
| 614 |
|
dnl $2 -- the value to translate |
| 615 |
|
dnl $3 -- template name |
| 616 |
< |
AC_DEFUN(AC_TRANSLATE_DEFINE, [ |
| 616 |
> |
AC_DEFUN([AC_TRANSLATE_DEFINE], [ |
| 617 |
|
if [[ "x$2" = "xyes" -o "x$2" = "xguessing yes" ]]; then |
| 618 |
|
AC_DEFINE($1, 1, $3) |
| 619 |
|
fi |
