[libc++abi] Remove redundant link flags on Apple platforms
These flags are already set when we create the cxxabi_shared target
using the SOVERSION and VERSION target properties, and the install_name
was already being overriden to '@rpath/libc++abi.1.dylib' by CMake
because no 'CMAKE_INSTALL_NAME_DIR' option was specified. So this is
effectively a removal of dead code with no intended functionality change.
The only think we're losing here is that we used to link against
libSystem.B.dylib instead of libSystem.dylib when building libc++abi
for macOS 10.6 -- however, I strongly suspect nobody's building
libc++abi from source for that target anymore.
git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@373934 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index cbf4b21..8d4eb79 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -103,23 +103,7 @@
# Setup flags.
add_link_flags_if_supported(-nodefaultlibs)
-set(LIBCXXABI_SHARED_LINK_FLAGS)
-
if ( APPLE )
- if ( CMAKE_OSX_DEPLOYMENT_TARGET STREQUAL "10.6" )
- list(APPEND LIBCXXABI_COMPILE_FLAGS "-U__STRICT_ANSI__")
- list(APPEND LIBCXXABI_SHARED_LINK_FLAGS
- "-compatibility_version 1"
- "-current_version 1"
- "-install_name /usr/lib/libc++abi.1.dylib")
- list(APPEND LIBCXXABI_LINK_FLAGS
- "/usr/lib/libSystem.B.dylib")
- else()
- list(APPEND LIBCXXABI_SHARED_LINK_FLAGS
- "-compatibility_version 1"
- "-install_name /usr/lib/libc++abi.1.dylib")
- endif()
-
if (LLVM_USE_SANITIZER)
if (("${LLVM_USE_SANITIZER}" STREQUAL "Address") OR
("${LLVM_USE_SANITIZER}" STREQUAL "Address;Undefined") OR
@@ -148,7 +132,6 @@
split_list(LIBCXXABI_COMPILE_FLAGS)
split_list(LIBCXXABI_LINK_FLAGS)
-split_list(LIBCXXABI_SHARED_LINK_FLAGS)
# FIXME: libc++abi.so will not link when modules are enabled because it depends
# on symbols defined in libc++.so which has not yet been built.
@@ -187,7 +170,7 @@
COMPILE_FLAGS
"${LIBCXXABI_COMPILE_FLAGS}"
LINK_FLAGS
- "${LIBCXXABI_LINK_FLAGS} ${LIBCXXABI_SHARED_LINK_FLAGS}"
+ "${LIBCXXABI_LINK_FLAGS}"
OUTPUT_NAME
"c++abi"
SOVERSION
