[cfe-dev] Failure building x86_64-w64-mingw32 triplet of clang on Windows

[Yaron Keren via cfe-dev]

libxml is optional library, used if found.
Maybe CMake finds your libxml2 but does not check if its 32 or 64 bit, just
assumes it's the right one?



2016-06-14 16:59 GMT+03:00 NAKAMURA Takumi via cfe-dev <
cfe-dev at lists.llvm.org>:

> On Tue, Jun 14, 2016 at 10:50 PM Edward Diener via cfe-dev <
> cfe-dev at lists.llvm.org> wrote:
>
>> On 6/14/2016 8:21 AM, NAKAMURA Takumi via cfe-dev wrote:
>> > I guess you are building on msys2 with external mingw-w64.
>>
>> No, I am not. Ninja is calling mingw-64/gcc-5.3 directly to build
>> llvm/clang
>
> .
>>
> > CMake picks up msys2's libxml2, I guess.
>>
>> I do have a 32-bit libxml2 on my Windows PATH from the GnuWin32 package.
>> But why is a build of llvm/clang requiring libxml2, whether a 32-bit or
>> 64-bit version ?
>>
>
> I don't know why CMake finds but doesn't ignore it.
> c-index-test uses libxml2 if available. libxml2 is not essential.
>
> We could add extra checks if libxml2 would be really available.
>
> > Could you try overriding CMake and reconfigure?
>> >
>> -DCMAKE_LIBRARY_PATH="C:/mingw-w64/x86_64-4.9.3-posix-seh-rt_v4-rev1/mingw64/x86_64-w64-mingw32/lib"
>>
>> Why would using gcc-4.9.3 make any difference ?
>>
>
> Excuse me. It was just an example. Please substitute with your mingw-w64's
> path.
>
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