linux-kernel - Re: [PATCH] nds32: vdso: fix and clean-up Makefile

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Date:   Wed, 24 Apr 2019 15:03:50 +0800
From:   Greentime Hu <green.hu@...il.com>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     Vincent Chen <deanbo422@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] nds32: vdso: fix and clean-up Makefile

Masahiro Yamada <yamada.masahiro@...ionext.com> 於 2019年4月18日 週四 下午5:37寫道：
>
> Hi Greentime,
>
>
> On Wed, Apr 3, 2019 at 5:38 PM Masahiro Yamada
> <yamada.masahiro@...ionext.com> wrote:
> >
> > - $(call if_changed,...) must have FORCE as a prerequisite
> >
> > - vdso.lds is a generated file, so it should be prefixed with
> >   $(obj)/ instead of $(src)/.
> >
> > - cmd_vdsosym is a one-liner rule, so the assignment with '='
> >   is simpler.
> >
> > Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
> > ---
>
> Ping?
>
>
> >  arch/nds32/kernel/vdso/Makefile | 8 +++-----
> >  1 file changed, 3 insertions(+), 5 deletions(-)
> >
> > diff --git a/arch/nds32/kernel/vdso/Makefile b/arch/nds32/kernel/vdso/Makefile
> > index e6c50a7..01a9610 100644
> > --- a/arch/nds32/kernel/vdso/Makefile
> > +++ b/arch/nds32/kernel/vdso/Makefile
> > @@ -28,7 +28,7 @@ CPPFLAGS_vdso.lds += -P -C -U$(ARCH)
> >  $(obj)/vdso.o : $(obj)/vdso.so
> >
> >  # Link rule for the .so file, .lds has to be first
> > -$(obj)/vdso.so.dbg: $(src)/vdso.lds $(obj-vdso)
> > +$(obj)/vdso.so.dbg: $(obj)/vdso.lds $(obj-vdso) FORCE
> >         $(call if_changed,vdsold)
> >
> >
> > @@ -40,9 +40,7 @@ $(obj)/%.so: $(obj)/%.so.dbg FORCE
> >  # Generate VDSO offsets using helper script
> >  gen-vdsosym := $(srctree)/$(src)/gen_vdso_offsets.sh
> >  quiet_cmd_vdsosym = VDSOSYM $@
> > -define cmd_vdsosym
> > -       $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@
> > -endef
> > +      cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@
> >
> >  include/generated/vdso-offsets.h: $(obj)/vdso.so.dbg FORCE
> >         $(call if_changed,vdsosym)
> > @@ -65,7 +63,7 @@ gettimeofday.o : gettimeofday.c FORCE
> >
> >  # Actual build commands
> >  quiet_cmd_vdsold = VDSOL   $@
> > -      cmd_vdsold = $(CC) $(c_flags) -Wl,-n -Wl,-T $^ -o $@
> > +      cmd_vdsold = $(CC) $(c_flags) -Wl,-n -Wl,-T $(real-prereqs) -o $@
> >  quiet_cmd_vdsoas = VDSOA   $@
> >        cmd_vdsoas = $(CC) $(a_flags) -c -o $@ $<
> >  quiet_cmd_vdsocc = VDSOA   $@

Hi Yamada,

Thank you.
Acked-by: Greentime Hu <greentime@...estech.com>