We've found that there are cases where it's useful to be able to include
the same target in multiple distributions (e.g. if you want a
distribution that's a superset of another distribution, for convenience
purposes), and that there are cases where the distribution of a target
and its umbrella can legitimately differ (e.g. the LTO library would
commonly be distributed alongside your tools, but it also falls under
the llvm-libraries umbrella, which would commonly be distributed
separately). Relax the restrictions while providing an option to restore
them (which is mostly useful to ensure you aren't accidentally placing
targets in the wrong distributions).
There could be further refinements here (e.g. excluding a target from an
umbrella if it's explicitly included in some other distribution, or
having variables to control which targets are allowed to be duplicated
or placed in a separate distribution than their umbrellas), but we can
punt on those until there's an actual need.
We are moving away from building the runtimes with LLVM_ENABLE_PROJECTS,
however the documentation was largely outdated. This commit updates all
the documentation I could find to use LLVM_ENABLE_RUNTIMES instead of
LLVM_ENABLE_PROJECTS for building runtimes.
Note that in the near future, libcxx, libcxxabi and libunwind will stop
supporting being built with LLVM_ENABLE_PROJECTS altogether. I don't know
what the plans are for other runtimes like libc, openmp and compiler-rt,
so I didn't make any changes to the documentation that would imply
something for those projects.
Once this lands, I will also cherry-pick this on the release/14.x branch
to make sure that LLVM's documentation is up-to-date and reflects what
we intend to support in the future.
Differential Revision: https://reviews.llvm.org/D119351
LLVM's build system contains support for configuring a distribution, but
it can often be useful to be able to configure multiple distributions
(e.g. if you want separate distributions for the tools and the
libraries). Add this support to the build system, along with
documentation and usage examples.
Reviewed By: phosek
Differential Revision: https://reviews.llvm.org/D89177
It's been an empty target since r360498 and friends
(`git log --grep='Move InstPrinter files to MCTargetDesc.' llvm/lib/Target`),
but due to hwo the way these targets are structured it was silently
an empty target without anyone noticing.
No behavior change.
Summary: The options aren't supported so they can be removed.
Reviewers: beanz, smeenai, compnerd
Reviewed By: compnerd
Subscribers: mgorny, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D69877
Summary:
This document is an attempt to provide a guide for best practices for using the LLVM build system to generate distributable LLVM-based tools.
Most of the document is geared toward distributions of LLVM-based toolchains, but much of it also applies to distributing other LLVM-based tools and libraries.
Reviewers: tstellar, phosek, jroelofs, hans, sylvestre.ledru
Reviewed By: tstellar
Subscribers: smeenai, dschuff, arphaman, winksaville, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D62040
llvm-svn: 361272
Shoaib Meenai