Upstream has declared that Variable Length Array's (VLAs) are a bad idea, and eventually -Wvla will be added to the top-level Makefile. We can go one better and make sure we don't introduce any more by adding it to the arch Makefile.
Signed-off-by: Michael Ellerman <m...@ellerman.id.au> --- arch/powerpc/Kbuild | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/Kbuild b/arch/powerpc/Kbuild index 1625a06802ca..86b261d6bde5 100644 --- a/arch/powerpc/Kbuild +++ b/arch/powerpc/Kbuild @@ -1,4 +1,5 @@ -subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror +subdir-ccflags-y := $(call cc-option, -Wvla) +subdir-ccflags-$(CONFIG_PPC_WERROR) += -Werror obj-y += kernel/ obj-y += mm/ -- 2.17.1
