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authorLouis Dionne <ldionne@apple.com>2019-10-07 18:12:10 +0000
committerLouis Dionne <ldionne@apple.com>2019-10-07 18:12:10 +0000
commit639f74d3fbf0a211eb31092c26574499977236e6 (patch)
treec64941301b5d5e4335dcfb347840f834918685f5
parent4e3fd556ec165586460cb43f0cedb36960ad20c6 (diff)
[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
-rw-r--r--src/CMakeLists.txt19
1 files changed, 1 insertions, 18 deletions
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 @@ endif ()
# 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 @@ endif()
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 @@ if (LIBCXXABI_ENABLE_SHARED)
COMPILE_FLAGS
"${LIBCXXABI_COMPILE_FLAGS}"
LINK_FLAGS
- "${LIBCXXABI_LINK_FLAGS} ${LIBCXXABI_SHARED_LINK_FLAGS}"
+ "${LIBCXXABI_LINK_FLAGS}"
OUTPUT_NAME
"c++abi"
SOVERSION