Re: [Boost-build] prototyping alternative Boost.Build syntax

Subject: Re: [Boost-build] prototyping alternative Boost.Build syntax
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2016-11-04 16:43:02

AMDG

On 11/04/2016 01:21 PM, Stefan Seefeld wrote:
> On 04.11.2016 11:18, Steven Watanabe wrote:
>> On 11/04/2016 07:29 AM, Stefan Seefeld wrote:
>>> Thus I have a few questions:
>>>
>>> * where in the code are target settings activated / deactivated so they
>>> are visible to actions ?
>> Target settings are applied in make1.c
>> around the call to the action.
> 
> It looks like the functions doing this might be
> "function_bind_variables" and "function_unbind_variables" (which for
> python functions don't do anything). Can you confirm that ? Can you
> explain how they work ?
> 

  No.  Those two functions are purely optimizations
that affect the implementation of name lookup
inside jam rules.

The settings are applied here:
https://github.com/boostorg/build/blob/develop/src/engine/make1.c#L1087

The call to the action is inside cmd_new:
https://github.com/boostorg/build/blob/develop/src/engine/make1.c#L1125

which is defined here:
https://github.com/boostorg/build/blob/develop/src/engine/command.c#L61

In Christ,
Steven Watanabe