kbuild: Remove useless warning while appending KCFLAGS

This is a respin of an older patch sent by Sam Ravnborg:
  http://www.gossamer-threads.com/lists/linux/kernel/1530602

This patch removes the annoying warning:

Makefile:708: "WARNING: Appending $KCFLAGS (-Wno-sign-compare) from command
line to kernel $CFLAGS"

which is printed every time I use KCFLAFS. The commit which introduced the
warning:

69ee0b3 kbuild: do not pick up CFLAGS from the environment

tells about the problems when people have CFLAGS in their environment,
then switches to KCFLAFS which should be enough to solve the issue, but
it anyway introduces a warning. Drop this warning.

Signed-off-by: Ozan Çağlayan <ozancag@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>

diff --git a/Makefile b/Makefile
index ddf5be952e456904ba009fbbe0d1c8e0a42470b7..fe8ab312402f576159c1b7611b3cd8b218cae760 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -648,22 +648,9 @@ ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y)
 endif
 
 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
-# But warn user when we do so
-warn-assign = \
-$(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)")
-
-ifneq ($(KCPPFLAGS),)
-        $(call warn-assign,CPPFLAGS)
-        KBUILD_CPPFLAGS += $(KCPPFLAGS)
-endif
-ifneq ($(KAFLAGS),)
-        $(call warn-assign,AFLAGS)
-        KBUILD_AFLAGS += $(KAFLAGS)
-endif
-ifneq ($(KCFLAGS),)
-        $(call warn-assign,CFLAGS)
-        KBUILD_CFLAGS += $(KCFLAGS)
-endif
+KBUILD_CPPFLAGS += $(KCPPFLAGS)
+KBUILD_AFLAGS += $(KAFLAGS)
+KBUILD_CFLAGS += $(KCFLAGS)
 
 # Use --build-id when available.
 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\