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Use FIONBIO only on pretty ancient systems.

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This commit is contained in:
gbeauche 2006-01-24 23:47:09 +00:00
parent a615a4ac24
commit 02525acf32
1 changed files with 24 additions and 0 deletions
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24
SheepShaver/src/Unix/configure.ac
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@ -432,6 +432,30 @@ AC_CHECK_FILE([/dev/ptc],
)
dnl (end of code from openssh-3.2.2p1 configure.ac)
dnl Check for systems where POSIX-style non-blocking I/O (O_NONBLOCK)
dnl doesn't work or is unimplemented. On these systems (mostly older
dnl ones), use the old BSD-style FIONBIO approach instead. [tcl.m4]
AC_CACHE_CHECK([FIONBIO vs. O_NONBLOCK for non-blocking I/O],
ac_cv_nonblocking_io, [
case "$host" in
*-*-osf*)
ac_cv_nonblocking_io=FIONBIO
;;
*-*-sunos4*)
ac_cv_nonblocking_io=FIONBIO
;;
*-*-ultrix*)
ac_cv_nonblocking_io=FIONBIO
;;
*)
ac_cv_nonblocking_io=O_NONBLOCK
;;
esac
])
if [[ "$ac_cv_nonblocking_io" = "FIONBIO" ]]; then
AC_DEFINE(USE_FIONBIO, 1, [Define if BSD-style non-blocking I/O is to be used])
fi
dnl AC_CHECK_FRAMEWORK($1=NAME, $2=INCLUDES)
AC_DEFUN(AC_CHECK_FRAMEWORK, [
AS_VAR_PUSHDEF([ac_Framework], [ac_cv_framework_$1])dnl