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

[Alexey Samsonov]

On Fri, Feb 13, 2015 at 1:16 PM, Nico Weber <thakis at chromium.org> wrote:

> 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).
>

Sure, I don't plan to remove support for builtins and libprofile.


>
> 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
>>
>> _______________________________________________
>> cfe-dev mailing list
>> cfe-dev at cs.uiuc.edu
>> http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev
>>
>>
>


-- 
Alexey Samsonov
vonosmas at gmail.com
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