Fix non-portable use of expr.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1868 c046a42c-6fe2-441c-8c8c-71466251a162

diff --git a/configure b/configure
index 92632e24d820759e0508ee478dd0f7b9cbdeb642..695fdb680d8bbcd8a1cf3f6e2da0274d6551569e 100755 (executable)
--- a/configure
+++ b/configure
@@ -167,7 +167,7 @@ else
 fi
 
 for opt do
-  optarg=`expr "$opt" : '[^=]*=\(.*\)'`
+  optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'`
   case "$opt" in
   --help|-h) show_help=yes
   ;;