hfinkel added a comment.
In https://reviews.llvm.org/D25403#565603, @jlebar wrote:
> Although these pass the CUDA test-suite tests (which I haven't yet committed
> because they're broken without this change), I could use some help running
> the libcxx tests.
>
> I cannot find any documentation explaining how to run the libcxx tests with
> just-built clang. Presumably this is supported and I just cannot figure it
> out. Anyway I figured I'd try to make a new objdir and point it to my
> just-built clang.
>
> $ mkdir objdir-libcxx
> $ cd objdir-libcxx
> $ cmake -G "Ninja" -DCMAKE_BUILD_TYPE=Release
> -DCMAKE_C_COMPILER=$HOME/llvm/release/bin/clang
> -DCMAKE_CXX_COMPILER=$HOME/llvm/release/bin/clang -DLLVM_ENABLE_ASSERTIONS=On
> ../llvm
>
>
> This also doesn't work. Building one of cmake's atomic tests fails with
> linker errors.
>
> Run Build Command:"/usr/local/google/home/jlebar/bin/ninja" "cmTC_0c40a"
> [1/2] Building CXX object CMakeFiles/cmTC_0c40a.dir/src.cxx.o
> [2/2] Linking CXX executable cmTC_0c40a
> FAILED: cmTC_0c40a
> : && /usr/local/google/home/jlebar/llvm/release/bin/clang
> -DHAVE_CXX_ATOMICS_WITH_LIB -std=c++11 CMakeFiles/cmTC_0c40a.dir/src.cxx.o
> -o cmTC_0c40a -lm -latomic && :
> CMakeFiles/cmTC_0c40a.dir/src.cxx.o:src.cxx:function
> __clang_call_terminate: error: undefined reference to '__cxa_begin_catch'
> CMakeFiles/cmTC_0c40a.dir/src.cxx.o:src.cxx:function
> __clang_call_terminate: error: undefined reference to 'std::terminate()'
> CMakeFiles/cmTC_0c40a.dir/src.cxx.o(.eh_frame+0x143): error: undefined
> reference to '__gxx_personality_v0'
> clang-4.0: error: linker command failed with exit code 1 (use -v to see
> invocation)
> ninja: build stopped: subcommand failed.
>
> Source file was:
>
> #include <atomic>
> std::atomic<int> x;
> int main() {
> return x;
> }
>
>
> I presume there is some Right Way to do this, and I'm just not doing it.
The tests should be runnable with lit. I generally just do an in-tree build and
run make check-libcxx. @EricWF , what's the recommended way of running the
tests from an out-of-tree build?
https://reviews.llvm.org/D25403
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