[buildroot] fix for GREP_OPTIONS

When using GREP_OPTIONS to supply default options to grep, the buildsystem might get broken (For example adding --color=always breaks it)
This patch will empty the GREP_OPTIONS to prevent the described (and any other) problems related to GREP_OPTIONS

Signed-off-by: Maarten Bezemer <m.m.bezemer@utwente.nl>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22443 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 3 insertions, 0 deletions

diff --git a/rules.mk b/rules.mk
index 0cb72ac6b..2add08713 100644
--- a/rules.mk
+++ b/rules.mk
@@ -18,6 +18,9 @@ TMP_DIR:=$(TOPDIR)/tmp
 
 export SHELL=/usr/bin/env bash -c '. $(TOPDIR)/include/shell.sh; eval "$$2"' --
 
+GREP_OPTIONS=
+export GREP_OPTIONS
+
 qstrip=$(strip $(subst ",,$(1)))
 #"))