[Qemu-devel] [Bug 996303] Re: does not work with clang

[Wei-Ren Chen]

O.K., the first thing you need to know is llvm-gcc uses GCC as it's
frontend to parse your source code, and uses LLVM as it's backend to
generate binary. In order to support global register correctly, not only
the frontend has to be able to recognize the global register syntax, but
also the LLVM backend is required to do the right thing. Since LLVM
doesn't support  global register, even llvm-gcc can  recognize the
global register syntax (uses GCC frontend), it cannot generate correct
binary. So this might be the problem you hit.

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https://bugs.launchpad.net/bugs/996303

Title:
  does not work with clang

Status in QEMU:
  New

Bug description:
  Frozen on start.

  CPU: dual-core 64-bit penryn
  MacOS: 10.7.3-x86_64
  Xcode: 4.3.2
  CC: /usr/bin/clang
  CXX: /usr/bin/clang++ => /usr/bin/clang
  LD: /usr/bin/clang
  CFLAGS: -Os -w -pipe -march=native -Qunused-arguments
  CXXFLAGS: -Os -w -pipe -march=native -Qunused-arguments
  MAKEFLAGS: -j2

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