linux-kernel - Re: [PATCH] perf: install into /usr/local by default.

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Message-ID: <4B9F5C64.4020807@gmail.com>
Date:	Tue, 16 Mar 2010 12:24:36 +0200
From:	Török Edwin <edwintorok@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	linux-kernel@...r.kernel.org,
	Frédéric Weisbecker <fweisbec@...il.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Avi Kivity <avi@...hat.com>
Subject: Re: [PATCH] perf: install into /usr/local by default.

On 03/16/2010 12:10 PM, Ingo Molnar wrote:
> * T??r??k Edwin <edwintorok@...il.com> wrote:
> 
>> It was confusing to install into $(HOME)/bin, especially since there was
>> no documentation mentioning where perf gets installed by default.
>> So install to /usr/local by default, as other programs do, and allow users to
>> override the install location by specifying the prefix explicitly.
>>
>> Signed-off-by: T??r??k Edwin <edwintorok@...il.com>
>> ---
>>  tools/perf/Makefile |    2 +-
>>  1 files changed, 1 insertions(+), 1 deletions(-)
>>
>> diff --git a/tools/perf/Makefile b/tools/perf/Makefile
>> index 2e7fa3a..8e8c199 100644
>> --- a/tools/perf/Makefile
>> +++ b/tools/perf/Makefile
>> @@ -216,7 +216,7 @@ STRIP ?= strip
>>  # runtime figures out where they are based on the path to the executable.
>>  # This can help installing the suite in a relocatable way.
>>  
>> -prefix = $(HOME)
>> +prefix = /usr/local
>>  bindir_relative = bin
>>  bindir = $(prefix)/$(bindir_relative)
>>  mandir = share/man
> 
> Btw., we inherited that default prefix from the Git project.
> 
> Is there a way to get it into ~/bin/ if the user does not have permission to 
> /usr/local ? (i.e. doesnt run it as root)

That is complicated, I usually run make as a normal user, and only do
make install as root (or sudo make install).
I do that for the kernel itself, and usually every program I build (I
don't like compiling as root).

> 
> That's a really convenient aspect of doing a 'make install' as user. (Which i 
> tend to do in most cases)

On 03/16/2010 12:20 PM, Avi Kivity wrote:
> What about people (like me) who do 'make && sudo make install'?
>
> Can we make it position independent and derive the path from /proc/$$/exe?
>

There is a RUNTIME_PREFIX define (undocumented...) that seems to do
something like that.
Are there any security implications of using that by default?

Best regards,
--Edwin
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