Re: [Boost-build] headers target not working

Subject: Re: [Boost-build] headers target not working
From: Bjørn Roald (bjorn_at_[hidden])
Date: 2013-10-13 18:48:51

On 10/13/2013 04:08 PM, Beman Dawes wrote:
> I'm trying to test the instructions at
> https://svn.boost.org/trac/boost/wiki/TryModBoost
>
> The first three steps work as expected:
>
>    git clone --recursive https://github.com/boostorg/boost.git modular-boost
>    cd modular-boost
>    .\bootstrap
>
> but this step:
>
>    .\b2 headers
>
> outputs "...found 1 target..." but doesn't create the expected "boost"
> directory structure.
>
> Are the instructions not correct?

They are correct if you add the changes in modular-build svn branch.

in svn
svn diff -r r85881:r85973 > ~/modular-build.patch
in git layout
patch -p0 -i ~/modular-build.patch

Hopefully modular-build branch  will soon be committed to trunk and thus 
be part of the automated git conversion.

The remaining work holding this off is AFAIK related to installation of 
headers without first doing ".\b2 headers". So this is really not needed 
as instructions says to do "./b2 headers" explicitly, and subsequent 
install will work. The explicit call to the "headers" target will 
eventually become redundant, it is still needed in a few places.

Also there may be concern that lack of testing of r85973 which is fixing 
predef/test build in the modular layout may also hold back the merge.

Remaining issues need not hold off merging to trunk as I don't think 
they are not breaking anything in SVN. I do not expect problems in SVN 
layout, but I am not making that call.  I think it is worth the risk of 
breakage in trunk as we can always pull it out if it gets bad. When 
trunk testing is OK we have a functioning baseline of Boost.Build for 
the modular layout.  We can hunt down remaining issues with simply 
testing in the git clones from the conversion, possibly getting some 
testers running from the git side.

-- 
Bjørn