[mattst88]

Jamroot applies boostcpp.platform to the whole /boost project, and its deduce-architecture rule had no Alpha entry. find-builds then matched nothing, the rule returned early, and a build on Alpha got neither nor set for any library.

alpha goes first in both .deducible-architectures and the find-builds argument list: the rule indexes the former with the result of the latter, so the two have to stay in the same order.

See also

• Add fcontext support for DEC Alpha (SysV/ELF) context#342
• Add alpha to the architecture feature bfgroup/b2#617
• Detect Alpha in the architecture check predef#142
• Add an Alpha architecture check config#556

[mattst88]

@pdimov, @grafikrobot: is there anything I can do to help get this merged?

[grafikrobot]

We are going to need to make sure all the other PRs are reflected in the master branch. AFAICT

[grafikrobot]

Or maybe some of them? @mattst88 can you list what other changes this depends on?

[mattst88]

All the PRs are listed in the initial comment. boostorg/config#556 is the only one that's still outstanding.

(Sorry, I'm unaware of how things flow into this repository)

[pdimov]

This PR depends on the Config one, so I don't think we should merge it yet.

Also, it needs to be against develop and not master.

[grafikrobot]

The b2 changes haven´t made it to the bundled b2. And the prefer changes haven´t made it to master. I'm working on those. Looks like context changes are in master.

[mattst88]

Thanks. Retargeted the PR to the develop branch. Hopefully the boostorg/config change will land soon.

[grafikrobot]

Thanks @mattst88 . I'm getting close to getting the predef changes ironed out for master (tonight or tomorrow on this). But I'm waiting on one verification on a b2 fix to be able to reflect that into the boost tree. :-(