From 7762e801e560bc20cd551a74514212c9376db5ca Mon Sep 17 00:00:00 2001
From: gfk <gfk@users.sourceforge.net>
Date: Sun, 3 Sep 2006 15:20:36 +0000
Subject: [PATCH] check sys/sysctl.h seperately, as it requires other headers
 on at least OpenBSD

---
 configure.in | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/configure.in b/configure.in
index 7ab43c1..b6a5eb3 100644
--- a/configure.in
+++ b/configure.in
@@ -154,7 +154,15 @@ dnl Checks for header files.
 AC_HEADER_DIRENT
 AC_HEADER_STDC
 AC_CHECK_HEADERS(fcntl.h sys/ioctl.h sys/time.h unistd.h sys/io.h errno.h)
-AC_CHECK_HEADERS(limits.h kvm.h sys/param.h sys/sysctl.h sys/dkstat.h)
+AC_CHECK_HEADERS(limits.h kvm.h sys/param.h sys/dkstat.h)
+
+dnl check sys/sysctl.h seperately, as it requires other headers on at least OpenBSD
+
+AC_CHECK_HEADERS([sys/sysctl.h], [], [],
+[[#if HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#endif
+]])
 
 dnl Check for particular preprocessor macros