Dear fellow Boost authors, As some of you may have heard.. Some of us have been working on making it possible to fully consume Boost in a modular arrangement. First some FAQs about this: Q: What is a "modular arrangement"? A: It's when the libraries can be used, and hence built, without creating the monolithic headers, without needing the root build files, and without needing the libraries to be arranged in the usual root/libs/<name>. Q: Will a modular Boost remove the Boost release? A: No. The collection of libraries is still a single release. See recent discussions about this. Q: Will this change the testing? A: No, unless you want to. You will still be able to test the same non-modular way. But you could also test the modular way. Q: Will this require that we change the current Boost source structure? A: Yes. Unfortunately there is one restriction that adhering to a modular Boost requires. We would not allow sublibs. That is, that we can't support having libraries in root/libs/thing/<library> style locations. All libraries must be single libraries under the root/libs directory. Thankfully there's only a handful of such libraries. The root/libs/numeric/* group of libraries. Q: Why do we want a modular Boost? A: I'm not going to enumerate the reasons here. But let me just say.. That we've wanted a way to reduce, i.e. modularize, Boost since at least 19 years ago. When we added the "--without-<library>" build option to the root build file https://github.com/boostorg/boost/blame/master/Jamroot#L107. Now the work part.. Over the past year or so I've been making patches to the Boost build files, in my own repo, that cleans up the many, many, problems that make libraries depend on the current source structure. I've also made changes to B2 to make it easier/possible/automatic to deal with the new modular freedom. The B2 changes were naturally easy to put in since I control the repo and distribution. And the last bit of them shipped with the 1.83 release last Summer. But now I need to start pushing the changes to the many Boost repos to get this finished. A couple of weeks ago I started posting PRs to incrementally, and unobtrusively, make the changes to the Jamfiles. So far I have these: https://github.com/boostorg/ublas/pull/189 https://github.com/boostorg/interval/pull/38 I'm not sure how else to say this so.. PLEASE, PLEASE, merge those and future PRs ASAP. -- -- René Ferdinand Rivera Morell -- Don't Assume Anything -- No Supone Nada -- Robot Dreams - http://robot-dreams.net