[Openmp-dev] Large Refactor of CMake build system [FIXED]

[Hans Wennborg]

That patch was committed earlier today in
http://llvm.org/viewvc/llvm-project?rev=243017&view=rev and merged to
3.7 in http://llvm.org/viewvc/llvm-project?rev=243021&view=rev

I'm sorry this thread didn't get updated. Many thanks for the
investigation and fix.

 - Hans

On Thu, Jul 23, 2015 at 1:29 PM, C Bergström <cbergstrom at pathscale.com> wrote:
> ping - I posted a trivial 1 line patch and it's almost 1 day later.
> Nobody has time to review and push?
>
> I am not sympathetic to this being the default clang runtime if that's
> how things are around here.
>
> Maybe someone can give me commit access and I do it?
>
>
> On Thu, Jul 23, 2015 at 7:50 AM, Hans Wennborg <hans at chromium.org> wrote:
>> +Jonathan
>>
>> On Wed, Jul 22, 2015 at 5:43 PM, C Bergström <cbergstrom at pathscale.com> wrote:
>>> <big fat snip>
>>> ....
>>> Attached are 2 potential patches which resolve the issue we're hitting
>>> (I let someone else decide which one or modify as needed)
>>>
>>> Summary:
>>> libomp_check_linker_flag rewrites src_to_link.c and CMakeLists.txt in
>>> build directory for test project, but cmake does not rebuild the
>>> project. The root cause is that on some filesystems (ext3, reiserfs)
>>> timestamp resoultion is 1 second. So cmake does not rebuild test
>>> project if check takes less than 1 second.
>>>
>>> Comments: These checks are somewhat stupid and it would be nice to be
>>> able to disable them. I don't know of any other llvm project
>>> essentially doing this
>>> write small CMake file just for testing; run cmake; test; etc
>>>
>>> Solution:
>>> The work-around is to build test projects in different subdirs.
>>>
>>> One patch uses variable name instead of flag name for subdirectory
>>> names, to avoid use of special symbols in directory name (-- , /).
>>>
>>> Please decide and push ASAP.