[cfe-dev] State of Clang in MSYS2

[Mehdi Amini via cfe-dev]

> On Mar 5, 2017, at 11:25 AM, Mateusz Mikuła via cfe-dev <cfe-dev at lists.llvm.org> wrote:
> 
> I don't have rights to commit, should I ask someone to do it with: https://reviews.llvm.org/D29464 <https://reviews.llvm.org/D29464>,https://reviews.llvm.org/D29772 <https://reviews.llvm.org/D29772>, https://reviews.llvm.org/D29952 <https://reviews.llvm.org/D29952>?
Just mention it in the review when it is accepter and the reviewer usually will commit it for you right after.

— 
Mehdi


> Also while browsing bugzilla I came into https://bugs.llvm.org//show_bug.cgi?id=30685 <https://bugs.llvm.org//show_bug.cgi?id=30685>.
> I have developed workaround for MinGW https://github.com/mati865/MINGW-packages/blob/clang-svn/mingw-w64-clang-svn/0107-enable-__float128-for-X86-MinGW.patch <https://github.com/mati865/MINGW-packages/blob/clang-svn/mingw-w64-clang-svn/0107-enable-__float128-for-X86-MinGW.patch>
> It tricks libstc++ to think Clang supports _float128 but __FLOAT128__ isn't defined so you can compile code with <type_traits> included but not with _float128 actually being used. I think it's better that way since using _float128 with mingw will seg fault Clang.
> 
> 
> W dniu 01.02.2017 o 23:25, Reid Kleckner pisze:
>> I would volunteer to try to get these patches in, but I don't have the bandwidth for it. I was hoping someone else would speak up, but I guess not. =/
>> 
>> On Sat, Jan 21, 2017 at 5:50 AM, Mateusz via cfe-dev <cfe-dev at lists.llvm.org <mailto:cfe-dev at lists.llvm.org>> wrote:
>> Hello,
>> 
>> I'm involved with maintenance of Clang and related LLVM packages for MSYS2.
>> It was based on Martell's patches (with his permission for MSYS2) from his git repository and MSYS2 own fixes so number of patches might be overwhelming: https://github.com/Alexpux/MINGW-packages/tree/master/mingw-w64-clang <https://github.com/Alexpux/MINGW-packages/tree/master/mingw-w64-clang>
>> Maybe some of these patches could make it's way to the upstream.
>> 
>> Tools state at version 3.9.1 :
>> Clang:        mostly works (there are issues found)
>> LLMV:        mostly works (not tested well enough)
>> LLD:           creates broken executable
>> LLDB:         runs but not further tested since lldb-server is not build-able for mingw-w64
>> libc++:        need further testing
>> libc++abi:    need further testing
>> compiler-rt:  need further testing
>> 
>> Open clang issues (at MSYS2):
>> https://github.com/Alexpux/MINGW-packages/issues/1677 <https://github.com/Alexpux/MINGW-packages/issues/1677>
>> https://github.com/Alexpux/MINGW-packages/issues/1678 <https://github.com/Alexpux/MINGW-packages/issues/1678> (not that much Clang issue but rather mingw-64 with GCC)
>> https://github.com/Alexpux/MINGW-packages/issues/1834 <https://github.com/Alexpux/MINGW-packages/issues/1834>
>> 
>> Any help will be welcome.
>> 
>> 
>> make check seems to hang during LLVM tests but here is make check-clang:
>> Failing Tests (18):
>>     Clang :: Driver/mingw.cpp
>>     Clang :: Modules/dependency-dump.m
>>     Clang :: Modules/dependency-gen.modulemap
>>     Clang :: PCH/chain-categories.m
>>     Clang :: PCH/chain-categories2.m
>>     Clang :: PCH/chain-class-extension.m
>>     Clang :: PCH/chain-conversion-lookup.cpp
>>     Clang :: PCH/chain-cxx.cpp
>>     Clang :: PCH/chain-default-argument-instantiation.cpp
>>     Clang :: PCH/chain-empty-initial-namespace.cpp
>>     Clang :: PCH/chain-friend-instantiation.cpp
>>     Clang :: PCH/chain-implicit-definition.cpp
>>     Clang :: PCH/chain-late-anonymous-namespace.cpp
>>     Clang :: PCH/chain-openmp-threadprivate.cpp
>>     Clang :: PCH/chain-pending-instantiations.cpp
>>     Clang :: PCH/chain-staticvar-instantiation.cpp
>>     Clang :: PCH/cxx-chain-function-template.cpp
>>     Clang :: PCH/replaced-decl.m
>> 
>>   Expected Passes    : 9349
>>   Expected Failures  : 16
>>   Unsupported Tests  : 227
>>   Unexpected Failures: 18
>> 
>> Full output is available here: https://gist.github.com/mati865/b4a2c96f82b22ac41eca32714092db1d <https://gist.github.com/mati865/b4a2c96f82b22ac41eca32714092db1d>
>> 
>> Is there any interest from You in providing at lest minimal support to it?
>> 
>> Cheers,
>> Mateusz Mikuła
>> 
>> 
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