Re: [Boost-build] Using alias to control a test

Subject: Re: [Boost-build] Using alias to control a test
From: Edward Diener (eldiener_at_[hidden])
Date: 2018-11-16 19:18:58

On 11/16/2018 11:04 AM, Steven Watanabe via Boost-build wrote:
> AMDG
> 
> On 11/16/2018 08:25 AM, Edward Diener via Boost-build wrote:
>> I am trying to use the 'alias' rule to decide whether something is
>> tested or not based on the OS and toolset. So I had:
>>
>> alias somealias : sometest ;
>>
>> alias somealias : : <target-os>windows <target-os-windows:toolset>gcc ;
>>
> 
> It's just <toolset>gcc.  toolset isn't a subfeature
> of target-os.  (Unfortunately, this is not a detectable
> error, because illegal properties are common in target
> alternatives and are simply considered not to match.)

Of course. I do not know how I missed that. It works. Thanks !

> 
> Also,
> - Target alternatives do not have to be the same kind of target,
>    so you can just define a single `alias sometest : : ... ;`

Ok.

> - Or you can use a conditional on the test
>    <target-os>windows,<toolset>gcc:<build>no

This I already knew.

> 
>> in order to keep 'sometest' from being tested when gcc on Windows was
>> invoked. Does anybody know why this does not work ?
>>
> In Christ,
> Steven Watanabe