linux-kernel - Re: [PATCH v4 4/4] tools: Connect to the kernel build system

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Date:	Tue, 10 Apr 2012 22:37:33 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Borislav Petkov <bp@...64.org>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Michal Marek <mmarek@...e.cz>,
	LKML <linux-kernel@...r.kernel.org>,
	Borislav Petkov <borislav.petkov@....com>
Subject: Re: [PATCH v4 4/4] tools: Connect to the kernel build system

On Tue, Apr 10, 2012 at 05:20:40PM +0200, Borislav Petkov wrote:
> From: Borislav Petkov <borislav.petkov@....com>
> 
> Now you can do
> 
> $ make tools/<toolname>
> 
> from the toplevel kernel directory and have the respective tool built.
> 
> If you want to build and install it, do
> 
> $ make tools/<toolname>_install
> 
> $ make tools/<toolname>_clean
> 
> should clean the respective tool directories.
> 
> If you want to clean all in tools, simply do
> 
> $ make tools/clean
> 
> Also, if you want to get what the possible targets are, simply calling
> 
> $ make tools/
> 
> should give you the short help.
> 
> $ make tools/install
> 
> installs all tools, of course. Doh.
> 
> Cc: Sam Ravnborg <sam@...nborg.org>
> Signed-off-by: Borislav Petkov <borislav.petkov@....com>
> ---
>  Makefile       |    7 +++++++
>  tools/Makefile |   25 ++++++++++++++++++++++++-
>  2 files changed, 31 insertions(+), 1 deletion(-)
> 
> diff --git a/Makefile b/Makefile
> index 0df3d003a079..e24ce7104f63 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1468,6 +1468,13 @@ kernelrelease:
>  kernelversion:
>  	@echo $(KERNELVERSION)
>  
> +# Clear a bunch of variables before executing the submake
> +tools/: FORCE
> +	$(Q)$(MAKE) LDFLAGS= -C $(src)/tools/
I think you need to clear MAKEFLAGS here too?

> +
> +tools/%: FORCE
> +	$(Q)$(MAKE) LDFLAGS= MAKEFLAGS= -C $(src)/tools/ $*
> +

>  
> -perf firewire lguest usb virtio vm: FORCE
> +firewire lguest perf usb virtio vm: FORCE
>  	$(QUIET_SUBDIR0)$@/ $(QUIET_SUBDIR1)

Fold this into 2/4

>  
>  cpupower: FORCE
> @@ -32,6 +42,19 @@ turbostat x86_energy_perf_policy: FORCE
>  selftests: FORCE
>  	$(QUIET_SUBDIR0)testing/$@/ $(QUIET_SUBDIR1)
>  
> +firewire_install lguest_install perf_install usb_install virtio_install vm_install:
> +	$(QUIET_SUBDIR0)$(@:_install=)/ $(QUIET_SUBDIR1) install
> +
> +cpupower_install:
> +	$(QUIET_SUBDIR0)power/$(@:_install=)/ $(QUIET_SUBDIR1) install
> +
> +turbostat_install x86_energy_perf_policy_install:
> +	$(QUIET_SUBDIR0)power/x86/$(@:_install=)/ $(QUIET_SUBDIR1) install
> +
> +install: firewire_install lguest_install perf_install usb_install \
> +		virtio_install vm_install cpupower_install turbostat_install \
> +		x86_energy_perf_policy_install
> +

This really belongs in 2/4 or a separate patch.

Sorry for bing picky about these details - but they destroy
an otherwise fine patch-set.

	Sam
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