From a8c039e14eafd7933776e8616715955d52320600 Mon Sep 17 00:00:00 2001
From: tgoodwin <tgoodwin>
Date: Tue, 24 Feb 1998 12:00:28 +0000
Subject: try for mkfifo()

---
 configure.ac | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 0fae5ca..91364ec 100644
--- a/configure.ac
+++ b/configure.ac
@@ -196,8 +196,9 @@ esac
 AM_CONDITIONAL(N_H_B, test "$ac_cv_sys_interpreter" = no)
 
 
-dnl What do we do for command arguments?  We want /dev/fd, Linux's
-dnl /proc/self/fd, or failing that, FIFOs.
+dnl What do we do for command arguments?  We want /dev/fd or Linux's
+dnl /proc/self/fd.  Failing that, we'll try for POSIX mkfifo(), or a
+dnl mknod() that makes FIFOs.
 AC_CACHE_CHECK(for /dev/fd, rc_cv_sys_dev_fd,
 	if test -d /dev/fd && test -r /dev/fd/0; then
 		rc_cv_sys_dev_fd=yes
@@ -210,7 +211,12 @@ AC_CACHE_CHECK(for /dev/fd, rc_cv_sys_dev_fd,
 case "$rc_cv_sys_dev_fd" in
 yes)	AC_DEFINE(HAVE_DEV_FD) ;;
 odd)	AC_DEFINE(HAVE_PROC_SELF_FD) ;;
-no)	AC_CACHE_CHECK(for named pipes, rc_cv_sys_fifo,
+no)	AC_CHECK_FUNCS(mkfifo) ;;
+esac
+
+case "$ac_cv_func_mkfifo" in
+yes)	AC_DEFINE(HAVE_FIFO) ;;
+no)	AC_CACHE_CHECK(for mknod FIFOs, rc_cv_sys_fifo,
 		AC_TRY_RUN([
 #include <sys/types.h>
 #include <sys/stat.h>
-- 
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