When optarg happens to contain \n like:

../configure --target-list='i386-softmmu
 x86_64-softmmu'

make will fail with message:

config-host.mak:45: *** missing separator.  Stop.

This patch fix this problem by replacing \n with space in optarg.

Signed-off-by: Hu Tao <hu...@cn.fujitsu.com>
---
 configure | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index f7685b5..0ee9de1 100755
--- a/configure
+++ b/configure
@@ -338,7 +338,7 @@ numa=""
 
 # parse CC options first
 for opt do
-  optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'`
+  optarg=`expr "x$opt" : 'x[^=]*=\(.*\)' | tr '\n' ' '`
   case "$opt" in
   --cross-prefix=*) cross_prefix="$optarg"
   ;;
@@ -722,7 +722,7 @@ fi
 werror=""
 
 for opt do
-  optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'`
+  optarg=`expr "x$opt" : 'x[^=]*=\(.*\)' | tr '\n' ' '`
   case "$opt" in
   --help|-h) show_help=yes
   ;;
-- 
1.9.3


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