respect CFLAGS/CPPFLAGS in env

diff --git a/Makefile b/Makefile
index aa33ef1af9a5bcc5e5923c7c8f7ebd364249e13f..0e0fef95bb47d32765d4ca28ee9596d5a6e3f13d 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -299,9 +299,9 @@ AFLAGS_KERNEL       =
 
 # Use LINUXINCLUDE when you must reference the include/ directory.
 # Needed to be compatible with the O= option
-CFLAGS         :=
-CPPFLAGS       :=
-AFLAGS         :=
+CFLAGS         := $(CFLAGS)
+CPPFLAGS       := $(CPPFLAGS)
+AFLAGS         := $(AFLAGS)
 
 # Read KERNELRELEASE from .kernelrelease (if it exists)
 KERNELRELEASE = $(shell cat .kernelrelease 2> /dev/null)