[cfe-dev] Using Xcode to compile clang, still possible ?

[Nikola Smiljanic]

Are you sure those cmake variables are ok? If I move clang out of source
and try to configure using cmake gui I can't see any variables with CLANG_
prefix?

On Tue, Nov 25, 2014 at 10:12 PM, Nat! <nat at mulle-kybernetik.com> wrote:

>
> On 24 Nov 2014, at 19:57, Reid Kleckner <rnk at google.com> wrote:
>
> > It looks like you are trying to use the so-called "standalone" clang
> build, but you checked out clang into llvm/tools/clang. You only need to
> put clang sources in llvm/tools/clang if you want it to be part of the LLVM
> build. If you move the sources out to somewhere alongside the llvm sources,
> the standalone build will probably work. I did this with VS a few weeks ago.
>
> Thanks, that was very helpful and it got me further along the way.
>
> Unfortunately I am also a cmake newbie as well...
>
> I moved llvm/tools/clang away and built llvm again. Then I tried to build
> clang separately in its own build directory thusly:
>
> nat at kempe:build(^) $ cmake
> -DCLANG_PATH_TO_LLVM_SOURCE=../../clang-test/llvm
> -DCLANG_PATH_TO_LLVM_BUILD=../../clang-test/build -DCMAKE_BUILD_TYPE=Debug
> ../clang
> -- Found LLVM_CONFIG as
> /Volumes/Source/srcM/clang-test/build/bin/llvm-config
> CMake Error at
> /Volumes/Source/srcM/clang-test/build/share/llvm/cmake/HandleLLVMOptions.cmake:38
> (message):
>   Host Clang must be able to find libstdc++4.7 or newer!
> Call Stack (most recent call first):
>   CMakeLists.txt:96 (include)
>
>
> -- Configuring incomplete, errors occurred!
> See also
> "/Volumes/Source/srcM/mulle-clang/build/CMakeFiles/CMakeOutput.log".
> See also
> "/Volumes/Source/srcM/mulle-clang/build/CMakeFiles/CMakeError.log".
>
> On a hunch (
> http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20140106/200545.html)
> I edited - in the llvm build directory "./../clang-test/build/" - the
> "CMakeCache.txt" file for LLVM_ENABLE_LIBCXX:BOOL=ON  and cmaked/build all
> of llvm.
>
> But the same error persists, probably because I don't understand how cmake
> works.
>
> Ciao
>    Nat!
> ------------------------------------------------------
> Ignorance more frequently begets confidence than does
> knowledge  -- Darwin
>
>
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