Revert "Enable weak hooks on darwin"

Reverts accidental upload.

This reverts commit 421408c0f2cc811bcf9a945be6e95e46f76cb358.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@291316 91177308-0d34-0410-b5e6-96231b3b80d8

9 files changed, 1 insertions, 42 deletions

diff --git a/cmake/Modules/SanitizerUtils.cmake b/cmake/Modules/SanitizerUtils.cmake
index 6ead24e12..c66083c24 100644
--- a/cmake/Modules/SanitizerUtils.cmake
+++ b/cmake/Modules/SanitizerUtils.cmake
@@ -46,15 +46,6 @@ macro(add_sanitizer_rt_symbols name)
   endforeach()
 endmacro()
 
-function(add_weak_symbols libname linkflags)
-  file(STRINGS "${COMPILER_RT_SOURCE_DIR}/lib/${libname}/weak_symbols.txt" WEAK_SYMBOLS)
-  set(local_linkflags ${${linkflags}})
-  foreach(SYMBOL ${WEAK_SYMBOLS})
-    set(local_linkflags ${local_linkflags} -Wl,-U,${SYMBOL})
-  endforeach()
-  set(${linkflags} ${local_linkflags} PARENT_SCOPE)
-endfunction()
-
 macro(add_sanitizer_rt_version_list name)
   set(vers ${CMAKE_CURRENT_BINARY_DIR}/${name}.vers)
   cmake_parse_arguments(ARG "" "" "LIBS;EXTRA" ${ARGN})
diff --git a/lib/asan/CMakeLists.txt b/lib/asan/CMakeLists.txt
index 4bebb0a45..1258ef616 100644
--- a/lib/asan/CMakeLists.txt
+++ b/lib/asan/CMakeLists.txt
@@ -106,10 +106,6 @@ endif()
 add_compiler_rt_component(asan)
 
 if(APPLE)
-  add_weak_symbols("asan" WEAK_SYMBOL_LINKFLAGS)
-  add_weak_symbols("ubsan" WEAK_SYMBOL_LINKFLAGS)
-  add_weak_symbols("sanitizer_common" WEAK_SYMBOL_LINKFLAGS)
-
   add_compiler_rt_runtime(clang_rt.asan
     SHARED
     OS ${SANITIZER_COMMON_SUPPORTED_OS}
@@ -121,7 +117,6 @@ if(APPLE)
                 RTLSanCommon
                 RTUbsan
     CFLAGS ${ASAN_DYNAMIC_CFLAGS}
-    LINKFLAGS ${WEAK_SYMBOL_LINKFLAGS}
     DEFS ${ASAN_DYNAMIC_DEFINITIONS}
     PARENT_TARGET asan)
 else()
diff --git a/lib/asan/weak_symbols.txt b/lib/asan/weak_symbols.txt
deleted file mode 100644
index ba7b0272c..000000000
--- a/lib/asan/weak_symbols.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-___asan_default_options
-___asan_default_suppressions
-___asan_on_error
diff --git a/lib/sanitizer_common/sanitizer_internal_defs.h b/lib/sanitizer_common/sanitizer_internal_defs.h
index 5338f7942..8ebe91a6b 100644
--- a/lib/sanitizer_common/sanitizer_internal_defs.h
+++ b/lib/sanitizer_common/sanitizer_internal_defs.h
@@ -32,7 +32,7 @@
 # define SANITIZER_WEAK_ATTRIBUTE  __attribute__((weak))
 #endif
 
-#if (SANITIZER_LINUX || SANITIZER_MAC || SANITIZER_WINDOWS) && !SANITIZER_GO
+#if (SANITIZER_LINUX || SANITIZER_WINDOWS) && !SANITIZER_GO
 # define SANITIZER_SUPPORTS_WEAK_HOOKS 1
 #else
 # define SANITIZER_SUPPORTS_WEAK_HOOKS 0
diff --git a/lib/sanitizer_common/weak_symbols.txt b/lib/sanitizer_common/weak_symbols.txt
deleted file mode 100644
index 8a1e32b80..000000000
--- a/lib/sanitizer_common/weak_symbols.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-___sanitizer_free_hook
-___sanitizer_malloc_hook
-___sanitizer_symbolize_code
-___sanitizer_symbolize_data
-___sanitizer_symbolize_demangle
-___sanitizer_symbolize_flush
diff --git a/lib/stats/CMakeLists.txt b/lib/stats/CMakeLists.txt
index ec75262d4..33ab1aea6 100644
--- a/lib/stats/CMakeLists.txt
+++ b/lib/stats/CMakeLists.txt
@@ -5,14 +5,8 @@ set_target_properties(stats PROPERTIES FOLDER "Compiler-RT Misc")
 
 if(APPLE)
   set(STATS_LIB_FLAVOR SHARED)
-
-  add_weak_symbols("asan" WEAK_SYMBOL_LINKFLAGS)
-  add_weak_symbols("ubsan" WEAK_SYMBOL_LINKFLAGS)
-  add_weak_symbols("sanitizer_common" WEAK_SYMBOL_LINKFLAGS)
 else()
   set(STATS_LIB_FLAVOR STATIC)
-
-  set(WEAK_SYMBOL_LINKFLAGS)
 endif()
 
 add_compiler_rt_runtime(clang_rt.stats
@@ -23,7 +17,6 @@ add_compiler_rt_runtime(clang_rt.stats
   OBJECT_LIBS RTSanitizerCommon
               RTSanitizerCommonLibc
   CFLAGS ${SANITIZER_COMMON_CFLAGS}
-  LINKFLAGS ${WEAK_SYMBOL_LINKFLAGS}
   PARENT_TARGET stats)
 
 add_compiler_rt_runtime(clang_rt.stats_client
@@ -32,5 +25,4 @@ add_compiler_rt_runtime(clang_rt.stats_client
   OS ${SANITIZER_COMMON_SUPPORTED_OS}
   SOURCES stats_client.cc
   CFLAGS ${SANITIZER_COMMON_CFLAGS}
-  LINKFLAGS ${WEAK_SYMBOL_LINKFLAGS}
   PARENT_TARGET stats)
diff --git a/lib/tsan/CMakeLists.txt b/lib/tsan/CMakeLists.txt
index 75d26349a..b26a884b1 100644
--- a/lib/tsan/CMakeLists.txt
+++ b/lib/tsan/CMakeLists.txt
@@ -107,10 +107,6 @@ if(APPLE)
     # Pass ASM file directly to the C++ compiler.
     set_source_files_properties(${TSAN_ASM_SOURCES} PROPERTIES LANGUAGE C)
   endif()
-
-  add_weak_symbols("ubsan" WEAK_SYMBOL_LINKFLAGS)
-  add_weak_symbols("sanitizer_common" WEAK_SYMBOL_LINKFLAGS)
-
   add_compiler_rt_runtime(clang_rt.tsan
     SHARED
     OS ${TSAN_SUPPORTED_OS}
@@ -121,7 +117,6 @@ if(APPLE)
                 RTSanitizerCommonLibc
                 RTUbsan
     CFLAGS ${TSAN_RTL_CFLAGS}
-    LINKFLAGS ${WEAK_SYMBOL_LINKFLAGS}
     PARENT_TARGET tsan)
   add_compiler_rt_object_libraries(RTTsan_dynamic
     OS ${TSAN_SUPPORTED_OS}
diff --git a/lib/ubsan/CMakeLists.txt b/lib/ubsan/CMakeLists.txt
index ebff36019..036c65a09 100644
--- a/lib/ubsan/CMakeLists.txt
+++ b/lib/ubsan/CMakeLists.txt
@@ -56,9 +56,6 @@ if(APPLE)
       SOURCES ${UBSAN_STANDALONE_SOURCES}
       CFLAGS ${UBSAN_STANDALONE_CFLAGS})
 
-    add_weak_symbols("ubsan" WEAK_SYMBOL_LINKFLAGS)
-    add_weak_symbols("sanitizer_common" WEAK_SYMBOL_LINKFLAGS)
-
     add_compiler_rt_runtime(clang_rt.ubsan
       SHARED
       OS ${SANITIZER_COMMON_SUPPORTED_OS}
@@ -67,7 +64,6 @@ if(APPLE)
                   RTUbsan_standalone
                   RTSanitizerCommon
                   RTSanitizerCommonLibc
-      LINKFLAGS ${WEAK_SYMBOL_LINKFLAGS}
       PARENT_TARGET ubsan)
   endif()
 
diff --git a/lib/ubsan/weak_symbols.txt b/lib/ubsan/weak_symbols.txt
deleted file mode 100644
index 69e1bc185..000000000
--- a/lib/ubsan/weak_symbols.txt
+++ /dev/null
@@ -1 +0,0 @@
-___ubsan_default_options