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authorMasahiro Yamada <yamada.masahiro@socionext.com>2018-03-16 16:37:09 +0900
committerMasahiro Yamada <yamada.masahiro@socionext.com>2018-03-26 02:01:21 +0900
commitce99d0bf312daf0178e640da9e3c93b773a67e7d (patch)
tree8fe9c4fcae4fb441918f4a00133a5650d9e9ab79 /Makefile
parentbd0f98eba6840d99b791b36a01b83fc62d55235f (diff)
downloadlinux-ce99d0bf312daf0178e640da9e3c93b773a67e7d.tar.bz2
kbuild: clear LDFLAGS in the top Makefile
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>
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index bfd09bc0da91..37574e3d21fe 100644
--- a/Makefile
+++ b/Makefile
@@ -435,6 +435,7 @@ KBUILD_CFLAGS_KERNEL :=
KBUILD_AFLAGS_MODULE := -DMODULE
KBUILD_CFLAGS_MODULE := -DMODULE
KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
+LDFLAGS :=
GCC_PLUGINS_CFLAGS :=
export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC