[cfe-dev] Misleading "must be able to find libstdc++4.7 or newer" message

[Sean McBride]

Hi all,

When I do a vanilla CMake build of clang svn trunk on OS X 10.7, I get this:

 CMake Error at cmake/modules/HandleLLVMOptions.cmake:37 (message):
   Host Clang must be able to find libstdc++4.7 or newer!
 Call Stack (most recent call first):
   CMakeLists.txt:301 (include)

I realize I just need to turn LLVM_ENABLE_LIBCXX on, but that error message seems pretty misleading to me.  Seems like it should say "libstdc++4.7 or newer **or libc++ x.y or newer**".  Some people may go looking to install libstdc++4.7 on their Mac when the OS-provided libc++ will do.  Better yet, why can't it just find libc++?  Or am I missing something?

Thanks,

-- 
____________________________________________________________
Sean McBride, B. Eng                 sean at rogue-research.com
Rogue Research                        www.rogue-research.com 
Mac Software Developer              Montréal, Québec, Canada