[cfe-dev] RFC: Dropping support for building sanitizers with autotools

[Nico Weber]

Sounds fine to me, but be aware that some of the libraries in compiler-rt
other than the sanitizers currently are only built correctly in the
autotools build (for example, I think libprofile_rt for iOS isn't built
correctly in the cmake build).

On Thu, Feb 12, 2015 at 6:31 PM, Alexey Samsonov <vonosmas at gmail.com> wrote:

> Hi everyone,
>
> TL;DR I plan to do subj unless anyone objects.
>
> Autotools support for building sanitizers was never complete, is a proper
> subset of CMake capabilities, and the gap between the features of CMake
> build and autotools is quickly increasing:
> 1) OS: autotools support Linux, Mac OS X and Android; CMake also supports
> FreeBSD and Windows.
> 2) Architectures: autotools support i386 and x86_64, CMake also supports
> MIPS, ARM/AArch64, PowerPC).
> 3) Library variants: autotools don't support building shared ASan runtime
> on Linux.
> 4 [!!!]) Autotools build doesn't have *any* support for building and
> running tests.
> 5) The sets of compiler flags we use to build runtimes are different in
> two builds, and are hard to kept in sync.
>
> Because of (4), sanitizer runtimes built with autotools are severely
> undertested, and maintaining two different build systems is a burden I
> would like to get rid of. Now seems to be a good time for that: we've cut
> off 3.6 release branch, and Hans assures me that 3.7 release process will
> use CMake.
>
> Are there existing users of configure/make that want sanitizers to be
> available in their build? Are there other arguments for keeping the
> autotools build "working" I'm missing?
>
> --
> Alexey Samsonov
> vonosmas at gmail.com
>
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>
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