linux-kernel - Re: [RFC PATCH 00/50] tools/perf: Speed up the build system

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Date:	Mon, 07 Oct 2013 09:35:55 -0600
From:	David Ahern <dsahern@...il.com>
To:	Ingo Molnar <mingo@...nel.org>
CC:	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Jiri Olsa <jolsa@...hat.com>
Subject: Re: [RFC PATCH 00/50] tools/perf: Speed up the build system

On 10/7/13 8:11 AM, Ingo Molnar wrote:
> These changes are not yet committed into any stable Git tree - I've pushed
> them out into:
>
>     git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tmp.perf
>
> (it might take a few minutes for kernel.org to sync up.)

Tested on Fedora 12, 14, 16 with varying degrees of feature support 
installed. The tests that failed are all static builds with the command 
line:

make O=/tmp/junk -C tools/perf LDFLAGS=-static NO_DWARF=1

Passing LDFLAGS to the feature tests should handle that.

I also noticed that the dwarf test is still run even with the NO_DWARF 
option passed in:

[daahern@...s-vdc-dev1 perf]$ make O=/tmp/junk LDFLAGS=-static 
NO_DWARF=1 -j 4
     BUILD: Doing 'make -j16' parallel build

Auto-detecting system features:

...                     backtrace: [ on  ]
...                         dwarf: [ on  ]
...                fortify-source: [ on  ]

Note the dwarf test shows 'on'.

David
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