Remember that LLVM almost became a FSF or GNU project. The only thing that prevented it from happening was RMS missing an email in his inbox. Imagine where LLVM would be today if he hadn't missed that email.
Probably an irrelevance thanks to the GPL. We should all be grateful RMS missed that email.
Exactly.
Ironically exactly thanks to the licence, clang is now lagging behind GCC and Visual C++ in ISO C++, even though LLVM itself has a contribution level similar to Linux kernel, the C and C++ vendors leeching clang forks aren't that keen stepping into Apple and Google's shoes now that they are focused on their own C and C++ follow ups.