[PATCH] Allow libc++abi to be built without unwinder.

[Logan Chien]

Hi danalbert, rengolin, jroelofs,

The efforts to build LLVM ARM EHABI unwinder breaks the possibility
to build libcxxabi with libgcc.  This commit fix the problem by
introducing the LIBCXXABI_USE_LLVM_UNWINDER conditional compilation
flag and guard the unwinder-specific changes in libc++abi.

(p.s. This is the 2/6 patch to fix the backtrace_test and libgcc support.)

http://reviews.llvm.org/D7030

Files:
  CMakeLists.txt
  src/cxa_personality.cpp

EMAIL PREFERENCES
  http://reviews.llvm.org/settings/panel/emailpreferences/
-------------- next part --------------
A non-text attachment was scrubbed...
Name: D7030.18337.patch
Type: text/x-patch
Size: 5619 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20150117/7827ffe3/attachment.bin>