Re: [BUGFIX PATCH] tools: Let O= makes handle a relative path with -C option

From: Masami Hiramatsu
Date: Fri Mar 06 2020 - 13:10:33 EST


On Fri, 6 Mar 2020 08:26:43 -0800
Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote:

> On 3/6/20 7:07 AM, Masami Hiramatsu wrote:
> > Thanks Geert,
> >
> > So Randy, what you will get if you add "echo $(PWD)" instead of "cd $(PWD)" ?
> > Is that still empty or shows the tools/bootconfig directory?
> >
> > Thanks,
>
> OK, in these lines:
> + dummy := $(if $(shell cd $(PWD); test -d $(O) || echo $(O)),$(error O=$(O) does not exist),)
> + ABSOLUTE_O := $(shell cd $(PWD); cd $(O) ; pwd)
>
> I changed both "cd $(PWD)" to "echo $(PWD)" and did
> $ make O=BUILD -C tools/bootconfig/
>
> and this is the build log:
>
> make: Entering directory '/home/rdunlap/lnx/next/linux-next-20200306/tools/bootconfig'
> cc ../../lib/bootconfig.c main.c -Wall -g -I./include -o bootconfig
> make: Leaving directory '/home/rdunlap/lnx/next/linux-next-20200306/tools/bootconfig'
>
>
> Does that help?

Hmm, did you apply "[PATCH 1/2] bootconfig: Support O=<builddir> option" too?

Also, I found this is not enough for perf. perf does more tricky thing in its Makefile.

Thank you,


--
Masami Hiramatsu <mhiramat@xxxxxxxxxx>