clang-1/runtime
Richard Smith 61a574f6a3 Split ubsan runtime into three pieces (clang part):
* libclang_rt-san-* is sanitizer_common, and is linked in only if no other
   sanitizer runtime is present.
 * libclang_rt-ubsan-* is the piece of the runtime which doesn't depend on
   a C++ ABI library, and is always linked in.
 * libclang_rt-ubsan_cxx-* is the piece of the runtime which depends on a
   C++ ABI library, and is only linked in when linking a C++ binary.

This change also switches us to using -whole-archive for the ubsan runtime
(which is made possible by the above split), and switches us to only linking
the sanitizer runtime into the main binary and not into DSOs (which is made
possible by using -whole-archive).

The motivation for this is to only link a single copy of sanitizer_common
into any binary. This is becoming important now because we want to share
more state between multiple sanitizers in the same process (for instance,
we want a single shared output mutex).

The Darwin ubsan runtime is unchanged; because we use a DSO there, we don't
need this complexity.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177605 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-20 23:49:07 +00:00
..
compiler-rt Split ubsan runtime into three pieces (clang part): 2013-03-20 23:49:07 +00:00
libcxx Use the new installheaders makefile target in libcxx. 2012-01-21 06:25:34 +00:00
CMakeLists.txt Install a copy of the libc++ headers with clang. <rdar://problem/10096516> 2011-09-30 20:24:28 +00:00
Makefile Install a copy of the libc++ headers with clang. <rdar://problem/10096516> 2011-09-30 20:24:28 +00:00