From ce99d0bf312daf0178e640da9e3c93b773a67e7d Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Fri, 16 Mar 2018 16:37:09 +0900 Subject: [PATCH] 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 Acked-by: Nicolas Pitre --- Makefile | 1 + 1 file changed, 1 insertion(+) 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 -- 2.30.2