From 13158f86e3904284dce3dad36b64f07414459551 Mon Sep 17 00:00:00 2001
From: rmanfredi <rmanfredi@2592e710-e01b-42a5-8df0-11608a6cc53d>
Date: Sat, 27 Nov 2010 11:55:39 +0000
Subject: Applied mega patch from Christian Biere to greatly improve feature
 detection and make a huge step towards better support for cross-compiling.

git-svn-id: svn://svn.code.sf.net/p/dist/code/trunk/dist@34 2592e710-e01b-42a5-8df0-11608a6cc53d
---
 mcon/U/d_sysconf.U | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

(limited to 'mcon/U/d_sysconf.U')

diff --git a/mcon/U/d_sysconf.U b/mcon/U/d_sysconf.U
index 13c6177..3678592 100644
--- a/mcon/U/d_sysconf.U
+++ b/mcon/U/d_sysconf.U
@@ -14,7 +14,7 @@
 ?RCS: Revision 3.0.1.1  1994/10/29  16:15:57  ram
 ?RCS: patch36: created by ADO
 ?RCS:
-?MAKE:d_sysconf: Inlibc
+?MAKE:d_sysconf: Trylink cat i_unistd
 ?MAKE:	-pick add $@ %<
 ?S:d_sysconf:
 ?S:	This variable conditionally defines the HAS_SYSCONF symbol, which
@@ -29,6 +29,18 @@
 ?H:.
 ?LINT:set d_sysconf
 : see if sysconf exists
-set sysconf d_sysconf
-eval $inlibc
+$cat >try.c <<EOC
+#$i_unistd I_UNISTD
+#ifdef I_UNISTD
+#include <unistd.h>
+#endif
+int main(void)
+{
+	static long ret;
+	ret |= sysconf(1);
+	return ret ? 0 : 1;
+}
+EOC
+set d_sysconf
+eval $trylink
 
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