14:06 <Praetonus> TwoNotes: "Defined symbol has signature (llvm::raw_ostream&, std::string) while error message says (llvm::raw_ostream&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)" That looks like an ABI issue. The C++ ABI in GCC changed recently so there are incompatibilities between old and new things compiled with GCC

14:07 <Praetonus> I'm not sure how to fix that. Maybe you'll have to build LLVM from source

14:08 <TwoNotes> Sigh, ok I will try that. I guess I might as well use 3.9.0 then

14:09 <TwoNotes> It is gcc 5.4.0

14:10 <TwoNotes> Is there a way to inspect a .a file and find the version of gcc that compiled it?

19:53 <TwoNotes> Trying to compile LLVM 3.9.0 on ARM gets an Internal COmpiler Error, so that route is out.

20:40 <TwoNotes> Trying again with 3.8.1. With which LLVM is ponyc tested on ARM?

21:15 <TwoNotes> Suspect inadequate RAM. Trying again with 4G swapfile

23:26 <TwoNotes> ahhHAA! I found a bug in LLVM

23:28 <TwoNotes> llvm-config reports the wrong value for --includedir if you build from scratch

23:33 <TwoNotes> It points to the original src include directory instead of the built one

23:33 <TwoNotes> The original is missing one file that gets generated during cmake

23:35 <TwoNotes> DataTypes.h

23:35 <TwoNotes> Building ponyc needs this file

23:58 <TwoNotes> Workaround is use 'llvm-config --prefix' plus "/include"