From cf7d86bff2e462e0d0309da265a7ec39bf52c9a2 Mon Sep 17 00:00:00 2001
From: "Kevin M. Rosenberg" <kevin@rosenberg.net>
Date: Wed, 12 Nov 2003 16:33:56 +0000
Subject: [PATCH] r8174: fix os detection

---
 doc/Makefile | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/doc/Makefile b/doc/Makefile
index b1dfa5e..0e03e00 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -21,9 +21,9 @@ DOCFILE_EXT_DEFAULT:=xml
 
 # Standard docfile processing
 
-DEBIAN=expr "`cat /etc/issue`" : '.*Debian.*'
-SUSE=expr "`cat /etc/issue`" : '.*SuSE.*'
-REDHAT=expr "`cat /etc/issue`" : '.*RedHat.*'
+DEBIAN=$(shell expr "`cat /etc/issue`" : '.*Debian.*')
+SUSE=$(shell expr "`cat /etc/issue`" : '.*SuSE.*')
+REDHAT=$(shell expr "`cat /etc/issue`" : '.*RedHat.*')
 
 ifneq (${DEBIAN},0)
 OS:=debian
-- 
2.34.1