[libcxx] Add support for sanitizers on OS X.
Summary: This patch adds special configuration logic to find the compiler_rt libraries required by sanitizers on OS X. The supported sanitizers are Address and Undefined.
Reviewers: mclow.lists
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D11381
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@242858 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index d3d5f38..a32f293 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -68,6 +68,32 @@
endif()
target_link_libraries(cxx ${libraries})
+if (APPLE AND LLVM_USE_SANITIZER)
+ if ("${LLVM_USE_SANITIZER}" STREQUAL "Address")
+ set(LIBFILE "libclang_rt.asan_osx_dynamic.dylib")
+ elseif("${LLVM_USE_SANITIZER}" STREQUAL "Undefined")
+ set(LIBFILE "libclang_rt.ubsan_osx_dynamic.dylib")
+ else()
+ message(WARNING "LLVM_USE_SANITIZER=${LLVM_USE_SANITIZER} is not supported on OS X")
+ endif()
+ if (LIBFILE)
+ execute_process(COMMAND ${CMAKE_CXX_COMPILER} -print-file-name=lib OUTPUT_VARIABLE LIBDIR RESULT_VARIABLE Result)
+ if (NOT ${Result} EQUAL "0")
+ message(FATAL "Failed to find library resource directory")
+ endif()
+ string(STRIP "${LIBDIR}" LIBDIR)
+ set(LIBDIR "${LIBDIR}/darwin/")
+ if (NOT IS_DIRECTORY "${LIBDIR}")
+ message(FATAL_ERROR "Cannot find compiler-rt directory on OS X required for LLVM_USE_SANITIZER")
+ endif()
+ set(LIBCXX_SANITIZER_LIBRARY "${LIBDIR}/${LIBFILE}")
+ set(LIBCXX_SANITIZER_LIBRARY "${LIBCXX_SANITIZER_LIBRARY}" PARENT_SCOPE)
+ message(STATUS "Manually linking compiler-rt library: ${LIBCXX_SANITIZER_LIBRARY}")
+ target_link_libraries(cxx "${LIBCXX_SANITIZER_LIBRARY}")
+ target_link_libraries(cxx "-Wl,-rpath,${LIBDIR}")
+ endif()
+endif()
+
# Setup flags.
append_if(LIBCXX_COMPILE_FLAGS LIBCXX_HAS_FPIC_FLAG -fPIC)