[LLVMdev] [cfe-dev] is configure+make dead yet?

[Michael Spencer]

On Thu, Jun 21, 2012 at 12:50 AM, Ashok Nalkund <ashoknn at qualcomm.com> wrote:
> On 6/20/2012 11:55 PM, Ashok Nalkund wrote:
>> On 6/20/2012 11:00 PM, "C. Bergström" wrote:
>>> On 06/21/12 12:47 PM, Chandler Carruth wrote:
>>>> On Wed, Jun 20, 2012 at 5:13 PM, Nick Lewycky <nlewycky at google.com
>>>> <mailto:nlewycky at google.com>> wrote:
>>>>
>>>>       Is there anybody who is certain that our autoconf dependency needs
>>>>       to stay around? Are there developers stuck on systems that don't
>>>>       have a recent enough cmake in their most recent release, or maybe
>>>>       are using some features from configure+make that the cmake build
>>>>       system doesn't implement?
>>>>
>>>>       If nobody pipes up, I might actually try actually removing it!
>>>>
>>>>
>>>> FWIW, I'm also under the impression that Apple's internal release
>>>> process depends on configure+make as well.
>>> clang/llvm are advertised as being independent of Apple.  There's a ton
>>> of companies using the project, but we should let them speak-up if they
>>> *really* need it to stay around.
>>>
>>> +1 for removing autoconf dep
>>
>> I posted earlier but seems it didnt catch anybody's attention.
>>
>> Please dont remove it yet. I'm relying on configure's '--enable-libcpp'
>> flag to compile LLVM/clang using clang++ and libc++. I couldnt find an
>> equivalent using cmake. Please see my mails titled "Compiling libc++
>> from within llvm (3.1)" and "Build llvm/clang with cmake vs configure
>> produces different set of artifacts".
>>
>> If you have any suggestions, I'm most willing to try it out. I dont know
>> enough about CMake but I tried to go through the cmake build files.
>>
>> Thanks,
>> ashok
>
> I managed to use:
>
> CC=clang CXX=clang++ CXXFLAGS="-stdlib=libc++ -I <libcxxdir..." cmake...
>
>  to cause it to use clang++ with libc++ to build LLVM/clang.
>
> But now I run into bug 10646
> (http://llvm.org/bugs/show_bug.cgi?id=10646). Can somebody comment on
> when the patch will be available on trunk. I can apply the patch to my
> local copy but would like to avoid local changes.
>
> tia,
> ashok

I fixed that bug a while ago. Also I build LLVM and Clang with libc++
daily using CMake and it works just fine.

- Michael Spencer