[libcxx] Move to using libc++abi2.exp as the default symbol list for libc++
Summary:
libc++abi2.exp should be used whenever `cxxabi.h` defines `_LIBCPPABI_VERSION`. This macro was added to libc++abi in 2012 in r149632. For this reason we should use libc++abi2.exp as default unless otherwise specified.
Also when building against an in-tree libc++abi we definitely want to use libc++abi2.exp.
I would love to know what OSX was the last to use libc++abi.exp but I can only test on 10.9.
Reviewers: danalbert, mclow.lists, EricWF
Reviewed By: EricWF
Subscribers: meadori, cfe-commits
Differential Revision: http://reviews.llvm.org/D7773
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@230119 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index 02c80d9..fb09c63 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -57,6 +57,10 @@
append_if(LIBCXX_LINK_FLAGS LIBCXX_HAS_NODEFAULTLIBS_FLAG -nodefaultlibs)
if ( APPLE )
+ if (NOT DEFINED LIBCXX_LIBCPPABI_VERSION)
+ set(LIBCXX_LIBCPPABI_VERSION "2")
+ endif()
+
if ( CMAKE_OSX_DEPLOYMENT_TARGET STREQUAL "10.6" )
list(APPEND LIBCXX_COMPILE_FLAGS "-U__STRICT_ANSI__")
list(APPEND LIBCXX_LINK_FLAGS