diff options
| author | Masahiro Yamada <[email protected]> | 2021-02-22 00:25:24 +0900 |
|---|---|---|
| committer | Jonathan Corbet <[email protected]> | 2021-02-22 13:59:10 -0700 |
| commit | 163ba35ff3714d7ccb57f7e4bc2bb44365c343a0 (patch) | |
| tree | df0a8647021045bbf7b5fd2d4abbc4cb4996ee5f /drivers/gpu/drm/tilcdc | |
| parent | 93ea4a0b8fce5c6496e58a6392714469cef864db (diff) | |
doc: use KCFLAGS instead of EXTRA_CFLAGS to pass flags from command line
You should use KCFLAGS to pass additional compiler flags from the
command line. Using EXTRA_CFLAGS is wrong.
EXTRA_CFLAGS is supposed to specify flags applied only to the current
Makefile (and now deprecated in favor of ccflags-y).
It is still used in arch/mips/kvm/Makefile (and possibly in external
modules too). Passing EXTRA_CFLAGS from the command line overwrites
it and breaks the build.
I also fixed drivers/gpu/drm/tilcdc/Makefile because commit 816175dd1fd7
("drivers/gpu/drm/tilcdc: Makefile, only -Werror when no -W* in
EXTRA_CFLAGS") was based on the same misunderstanding.
Signed-off-by: Masahiro Yamada <[email protected]>
Reviewed-by: Alex Shi <[email protected]>
Acked-by: Federico Vaga <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jonathan Corbet <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/tilcdc')
| -rw-r--r-- | drivers/gpu/drm/tilcdc/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/tilcdc/Makefile b/drivers/gpu/drm/tilcdc/Makefile index 662bf3a348c9..f5190477de72 100644 --- a/drivers/gpu/drm/tilcdc/Makefile +++ b/drivers/gpu/drm/tilcdc/Makefile @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 -ifeq (, $(findstring -W,$(EXTRA_CFLAGS))) +ifeq (, $(findstring -W,$(KCFLAGS))) ccflags-y += -Werror endif |