Re: inopportune rebuild

From: TEMPLIE Cédric (cedric.templie_at_[hidden])
Date: 2005-01-17 03:43:59

Nobody has an idea to help me please ?

Thx again

TEMPLIE Cédric

TEMPLIE Cédric wrote:
> I create a little test project to show the rebuilding.
> Maybe it will help to explain to me why there is a rebuild...
> 
> To run the test, run bjam from top-level, change nothing, and re-run bjam.
> 
> My questions are :
> - why the project2.h is copied ?
> - why project3 is rebuild (I supposed because project2.h is copied) ?
> 
> Thx
> 
> TEMPLIE Cédric
> 
> TEMPLIE Cédric wrote:
> 
>>Hi,
>>
>>I use <dependency> in my project requirements to specify which projects 
>>have to be build before the current project can be build...
>>
>>In most cases project to build before have themself dependency project.
>>These dependency project could be the same for 2 projects...
>>
>>It seems that if there is at least one cross dependency, the system 
>>rebuild unnecessary things.
>>
>>ex:
>>
>>project a : <dependency>/b <dependency>/c
>>project b : <dependency>/d
>>project c : <dependency>/d
>>
>>if I build project a by doing bjam debug in the dir of project a, it 
>>build b, c, d and a. Just after without modifying anything, I retry to 
>>build project a (bjam debug).
>>it rebuild project b, c, d and a....
>>
>>I suppose that it is the way <dependency> work.
>>
>>Anyway, I do not like very much to use <dependency>, I am sure using 
>><source> to depends on other project libraries is the better way to 
>>work. And I think that using that will avoid my rebuild issues.
>>
>>
>>I know that my system is complex, but all difficulties I have are 
>>because when I build a project, I also need to stage some sources...
>>
>>Vladimir Prus told me a solution: have an alias at top-level that calls 
>>all of stage rules of my subprojects, but what I want is to stage things 
>>only when the project is build... so it is not enough. Or I missed 
>>something in the explanation of Vladimir Prus...
>>
>>But if there is a way to tell the system to stage some things after 
>>building (without to have something like bjam install) I certainly 
>>change my build system to use <source>.
>>I mean if a project need a lib to build, the fact to build this lib 
>>implies that the lib and its headers is exported in a specific directory.
>>
>>I know that Vladimir Prus was working on stage dependencies, but I don't 
>>know what is the state of the work he did.
>>
>>One other thing, I want to be able to build all projects from the 
>>top-level and projects individually.
>>
>>Thanks in advance
>>
>>TEMPLIE Cédric
>>
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>> 
>>Yahoo! Groups Links
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