- Don't show grep outputs

diff --git a/Zend/Zend.m4 b/Zend/Zend.m4
index 1b2029b05236c80726e8c87de9c39a7414b39f4b..129bcaa395ae2c22dcfd25e63ca40ac8b862c503 100644 (file)
--- a/Zend/Zend.m4
+++ b/Zend/Zend.m4
@@ -212,7 +212,7 @@ AC_C_INLINE
 AC_SUBST(INLINE_CFLAGS)
 
 AC_MSG_CHECKING(target system is Darwin)
-if echo "$target" | grep "darwin"; then
+if echo "$target" | grep "darwin" > /dev/null; then
   AC_DEFINE([DARWIN], 1, [Define if the target system is darwin])
   AC_MSG_RESULT(yes)
 else