On Fri, 16 Mar 2018, Masahiro Yamada wrote: > 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.masah...@socionext.com>
Acked-by: Nicolas Pitre <n...@linaro.org> > --- > > Changes in v2: None > > Makefile | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/Makefile b/Makefile > index d9bb6dd6..ac8755d 100644 > --- a/Makefile > +++ b/Makefile > @@ -437,6 +437,7 @@ 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 > -- > 2.7.4 > >
