1 files changed, 6 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 9ba80a689..6d6e83630 100644
--- a/Makefile
+++ b/Makefile
@@ -186,6 +186,12 @@ cc-option=$(shell if $(TARGET_CC) $(TARGET_CFLAGS) $(1) -S -o /dev/null -xc /dev
 #############################################################
 unexport CROSS_COMPILE
 unexport ARCH
+unexport CC
+unexport CXX
+unexport CPP
+unexport CFLAGS
+unexport CXXFLAGS
+unexport GREP_OPTIONS
 
 GNU_HOST_NAME:=$(shell package/gnuconfig/config.guess)