building clang/llvm on 10.9

[Ryan Schmidt]

On Nov 24, 2013, at 17:09, James Gregurich wrote:

> FYI.
> 
> To get clang-3.4 to build on 10.9, I had to modify the port file to set the isysroot to the 10.9 SDK. the build fails because it can’t find system framework headers. add the following flag to the configure script invocation:
> 
> --with-default-sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk

clang-3.4 installs fine for me on Mavericks with no changes.

Are you sure you’ve installed the Xcode command line tools by running `xcode-select --install`? If not please do so.