From: Masahiro Yamada yamada.masahiro@socionext.com
commit ce99d0bf312daf0178e640da9e3c93b773a67e7d upstream.
Currently LDFLAGS is not cleared, so same flags are accumulated in LDFLAGS when the top Makefile is recursively invoked.
I found unneeded rebuild for ARCH=arm64 when CONFIG_TRIM_UNUSED_KSYMS is enabled. If include/generated/autoksyms.h is updated, the top Makefile is recursively invoked, then arch/arm64/Makefile adds one more '-maarch64linux'. Due to the command line change, modules are rebuilt needlessly.
Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com Acked-by: Nicolas Pitre nico@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- Makefile | 1 + 1 file changed, 1 insertion(+)
--- a/Makefile +++ b/Makefile @@ -395,6 +395,7 @@ KBUILD_CFLAGS_KERNEL := KBUILD_AFLAGS_MODULE := -DMODULE KBUILD_CFLAGS_MODULE := -DMODULE KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds +LDFLAGS := GCC_PLUGINS_CFLAGS := CLANG_FLAGS :=