[Scons-dev] Clang support

[Bill Deegan]

Pawel,

Take a look at Environment() in the Man Page and look at it's tools
argument.
There should also be info in the users guide.
The default behavior when no tools= is specified is supposed to be
reasonable, but developers can always do what they want.
Often I use Environment(tools=[]) and then env.Tool('gcc')... to be very
explicit

-Bill

On Mon, Jan 5, 2015 at 4:13 PM, Paweł Tomulik <ptomulik at meil.pw.edu.pl>
wrote:

>  Well, I thought that there were just defaults for given platform, for
> example gcc for Linux (so it used gcc, if it's installed or fails if it's
> not, even if other supported compilers are available)?. Am I wrong?
>
> W dniu 06.01.2015 o 01:08, Bill Deegan pisze:
>
>   Pawel,
>
>  It's always been possible to set tool preference in the Environment()
> creation.
>  As far as allowing a user to override such via local settings, that's be
> up to the project using SCons.
>
>  Allowing such by default would likely cause more issues than it solves as
> one of the core functional requirements of SCons is that it enables a
> reproducible build regardless of the users environment.
>  (This is to enable production software builds, as opposed to open source
> builds which typically want autoconf like behavior, which is also core
> functional requirement for SCons to enable)
>
>  -Bill
>
>
> On Mon, Jan 5, 2015 at 4:02 PM, Michael Jarvis <mjarvis.tx.08 at gmail.com>
> wrote:
>
>> Clang can (mostly) emulate gcc, while the reverse is not true. I would
>> say default to gcc as well.
>>
>> On Mon, Jan 5, 2015 at 6:00 PM, Bill Deegan <bill at baddogconsulting.com>
>> wrote:
>>
>>>  I'd say on linux default to gcc.
>>>  If we add clang tools the user can always override them if they wish to.
>>>
>>>  -Bill
>>>
>>> On Mon, Jan 5, 2015 at 3:58 PM, William Blevins <wblevins001 at gmail.com>
>>> wrote:
>>>
>>>> Im not sure what percentage of linux devs use clang vs gcc, but my
>>>> personal experience is gcc is more widely used.
>>>>
>>>> Yet another gcc user,
>>>> William
>>>>  On Jan 5, 2015 6:51 PM, "Russel Winder" <russel at winder.org.uk> wrote:
>>>>
>>>>>  On Mon, 2015-01-05 at 13:48 +0100, Paweł Tomulik wrote:
>>>>> […]
>>>>> > I have a project where I just set construction variables CC=clang and
>>>>> > CXX=clang++ and it works well (I check existence of these compilers
>>>>> with
>>>>> > SConf, so I don't need the Tool machinery to search for the compiler
>>>>> > executables).
>>>>> >
>>>>> > Some time ago I also wrote these two tools:
>>>>> >
>>>>> > https://github.com/ptomulik/scons-tool-clang
>>>>> > https://github.com/ptomulik/scons-tool-clangpp
>>>>> >
>>>>> > but for some (forgotten) reason I don't use them :)
>>>>>
>>>>> This may work fine, but if SCons does not have tools called clang,
>>>>> clang
>>>>> ++, clanglink *AND* detection of clang for the cc, c++ and link tools,
>>>>> then SCons has no credible support for Clang.
>>>>>
>>>>> My real question is whether SCons should prefer clang over gcc for
>>>>> Linux.
>>>>>
>>>>> --
>>>>> Russel.
>>>>>
>>>>> =============================================================================
>>>>> Dr Russel Winder      t: +44 20 7585 2200 <%2B44%2020%207585%202200>
>>>>>  voip: sip:russel.winder at ekiga.net
>>>>> 41 Buckmaster Road    m: +44 7770 465 077 <%2B44%207770%20465%20077>
>>>>>  xmpp: russel at winder.org.uk
>>>>> London SW11 1EN, UK   w: www.russel.org.uk  skype: russel_winder
>>>>>
>>>>>  _______________________________________________
>>>>> Scons-dev mailing list
>>>>> Scons-dev at scons.org
>>>>> https://pairlist2.pair.net/mailman/listinfo/scons-dev
>>>>>
>>>>>
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>>
>>
>>   --
>>  *Michael Jarvis*
>> McKinney, TX USA
>> http://about.me/michael.a.jarvis
>>
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>>
>
>
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>
> --
> Pawel Tomulik
>
>
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