[compiler-rt] Allow c++ abi to be explictly disabled in cmake configuration

Summary: This will allow for the sanitizers to be used when c++ abi is unavailable.

Reviewers: samsonov, beanz, pcc, rnk

Subscribers: llvm-commits, kubabrecka, compnerd, dberris

Differential Revision: https://reviews.llvm.org/D23376

llvm-svn: 278848

diff --git a/compiler-rt/CMakeLists.txt b/compiler-rt/CMakeLists.txt
index f72fb01..a121519 100644 (file)
--- a/compiler-rt/CMakeLists.txt
+++ b/compiler-rt/CMakeLists.txt
@@ -85,6 +85,19 @@ option(COMPILER_RT_EXTERNALIZE_DEBUGINFO
 # COMPILER_RT_DEBUG_PYBOOL is used by lit.common.configured.in.
 pythonize_bool(COMPILER_RT_DEBUG)
 
+if(APPLE AND SANITIZER_MIN_OSX_VERSION VERSION_LESS "10.9")
+  # Mac OS X prior to 10.9 had problems with exporting symbols from
+  # libc++/libc++abi.
+  set(use_cxxabi_default OFF)
+elseif(MSVC)
+  set(use_cxxabi_default OFF)
+else()
+  set(use_cxxabi_default ON)
+endif()
+
+option(SANITIZER_CAN_USE_CXXABI "Sanitizers can use cxxabi" ${use_cxxabi_default})
+pythonize_bool(SANITIZER_CAN_USE_CXXABI)
+
 #================================
 # Setup Compiler Flags
 #================================
@@ -204,17 +217,6 @@ append_list_if(COMPILER_RT_HAS_WD4800_FLAG /wd4800 SANITIZER_COMMON_CFLAGS)
 # Warnings to turn off for all libraries, not just sanitizers.
 append_string_if(COMPILER_RT_HAS_WUNUSED_PARAMETER_FLAG -Wno-unused-parameter CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
 
-if(APPLE AND SANITIZER_MIN_OSX_VERSION VERSION_LESS "10.9")
-  # Mac OS X prior to 10.9 had problems with exporting symbols from
-  # libc++/libc++abi.
-  set(SANITIZER_CAN_USE_CXXABI FALSE)
-elseif(MSVC)
-  set(SANITIZER_CAN_USE_CXXABI FALSE)
-else()
-  set(SANITIZER_CAN_USE_CXXABI TRUE)
-endif()
-pythonize_bool(SANITIZER_CAN_USE_CXXABI)
-
 add_subdirectory(include)
 
 set(COMPILER_RT_LIBCXX_PATH ${LLVM_MAIN_SRC_DIR}/projects/libcxx)

diff --git a/compiler-rt/lib/ubsan/ubsan_type_hash_itanium.cc b/compiler-rt/lib/ubsan/ubsan_type_hash_itanium.cc
index 26272e3..f5b3cca 100644 (file)
--- a/compiler-rt/lib/ubsan/ubsan_type_hash_itanium.cc
+++ b/compiler-rt/lib/ubsan/ubsan_type_hash_itanium.cc
@@ -13,7 +13,7 @@
 
 #include "sanitizer_common/sanitizer_platform.h"
 #include "ubsan_platform.h"
-#if CAN_SANITIZE_UB && !SANITIZER_WINDOWS
+#if CAN_SANITIZE_UB && UBSAN_CAN_USE_CXXABI
 #include "ubsan_type_hash.h"
 
 #include "sanitizer_common/sanitizer_common.h"