X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=blobdiff_plain;f=cmake%2Fmodules%2FAddLLVM.cmake;h=e121da6786d4752265c103541f33480f232a1e61;hp=83897935e27d4edab4b3849f97cbc03152415774;hb=2ffa666beca8a55cafb5f0bac88671fec7645626;hpb=85ab1e7fe79dcc05d2402c4cfc34f324c9ece65f

diff --git a/cmake/modules/AddLLVM.cmake b/cmake/modules/AddLLVM.cmake
index 83897935e27..e121da6786d 100644
--- a/cmake/modules/AddLLVM.cmake
+++ b/cmake/modules/AddLLVM.cmake
@@ -1,6 +1,6 @@
-include(LLVMParseArguments)
 include(LLVMProcessSources)
 include(LLVM-Config)
+include(DetermineGCCCompatible)
 
 function(llvm_update_compile_flags name)
   get_property(sources TARGET ${name} PROPERTY SOURCES)
@@ -22,15 +22,13 @@ function(llvm_update_compile_flags name)
       list(APPEND LLVM_COMPILE_DEFINITIONS _HAS_EXCEPTIONS=0)
       list(APPEND LLVM_COMPILE_FLAGS "/EHs-c-")
     endif()
-    if (CLANG_CL)
-      # FIXME: Remove this once clang-cl supports SEH
-      list(APPEND LLVM_COMPILE_DEFINITIONS "GTEST_HAS_SEH=0")
-    endif()
   endif()
 
   # LLVM_REQUIRES_RTTI is an internal flag that individual
   # targets can use to force RTTI
+  set(LLVM_CONFIG_HAS_RTTI YES CACHE INTERNAL "")
   if(NOT (LLVM_REQUIRES_RTTI OR LLVM_ENABLE_RTTI))
+    set(LLVM_CONFIG_HAS_RTTI NO CACHE INTERNAL "")
     list(APPEND LLVM_COMPILE_DEFINITIONS GTEST_HAS_RTTI=0)
     if (LLVM_COMPILER_IS_GCC_COMPATIBLE)
       list(APPEND LLVM_COMPILE_FLAGS "-fno-rtti")
@@ -42,7 +40,7 @@ function(llvm_update_compile_flags name)
   # Assume that;
   #   - LLVM_COMPILE_FLAGS is list.
   #   - PROPERTY COMPILE_FLAGS is string.
-  string(REPLACE ";" " " target_compile_flags "${LLVM_COMPILE_FLAGS}")
+  string(REPLACE ";" " " target_compile_flags " ${LLVM_COMPILE_FLAGS}")
 
   if(update_src_props)
     foreach(fn ${sources})
@@ -84,31 +82,25 @@ function(add_llvm_symbol_exports target_name export_file)
       DEPENDS ${export_file}
       VERBATIM
       COMMENT "Creating export file for ${target_name}")
-    set_property(TARGET ${target_name} APPEND_STRING PROPERTY
-                 LINK_FLAGS "  -Wl,--version-script,${CMAKE_CURRENT_BINARY_DIR}/${native_export_file}")
+    if (${CMAKE_SYSTEM_NAME} MATCHES "SunOS")
+      set_property(TARGET ${target_name} APPEND_STRING PROPERTY
+                   LINK_FLAGS "  -Wl,-M,${CMAKE_CURRENT_BINARY_DIR}/${native_export_file}")
+    else()
+      set_property(TARGET ${target_name} APPEND_STRING PROPERTY
+                   LINK_FLAGS "  -Wl,--version-script,${CMAKE_CURRENT_BINARY_DIR}/${native_export_file}")
+    endif()
   else()
     set(native_export_file "${target_name}.def")
 
-    set(CAT "cat")
-    set(export_file_nativeslashes ${export_file})
-    if(WIN32 AND NOT CYGWIN)
-      set(CAT "type")
-      # Convert ${export_file} to native format (backslashes) for "type"
-      # Does not use file(TO_NATIVE_PATH) as it doesn't create a native
-      # path but a build-system specific format (see CMake bug
-      # http://public.kitware.com/Bug/print_bug_page.php?bug_id=5939 )
-      string(REPLACE / \\ export_file_nativeslashes ${export_file})
-    endif()
-
     add_custom_command(OUTPUT ${native_export_file}
-      COMMAND ${CMAKE_COMMAND} -E echo "EXPORTS" > ${native_export_file}
-      COMMAND ${CAT} ${export_file_nativeslashes} >> ${native_export_file}
+      COMMAND ${PYTHON_EXECUTABLE} -c "import sys;print(''.join(['EXPORTS\\n']+sys.stdin.readlines(),))"
+        < ${export_file} > ${native_export_file}
       DEPENDS ${export_file}
       VERBATIM
       COMMENT "Creating export file for ${target_name}")
     set(export_file_linker_flag "${CMAKE_CURRENT_BINARY_DIR}/${native_export_file}")
     if(MSVC)
-      set(export_file_linker_flag "/DEF:${export_file_linker_flag}")
+      set(export_file_linker_flag "/DEF:\"${export_file_linker_flag}\"")
     endif()
     set_property(TARGET ${target_name} APPEND_STRING PROPERTY
                  LINK_FLAGS " ${export_file_linker_flag}")
@@ -158,33 +150,41 @@ if(NOT WIN32 AND NOT APPLE)
 endif()
 
 function(add_link_opts target_name)
-  # Pass -O3 to the linker. This enabled different optimizations on different
-  # linkers.
-  if(NOT (${CMAKE_SYSTEM_NAME} MATCHES "Darwin" OR WIN32))
-    set_property(TARGET ${target_name} APPEND_STRING PROPERTY
-                 LINK_FLAGS " -Wl,-O3")
-  endif()
-
-  if(LLVM_LINKER_IS_GOLD)
-    # With gold gc-sections is always safe.
-    set_property(TARGET ${target_name} APPEND_STRING PROPERTY
-                 LINK_FLAGS " -Wl,--gc-sections")
-    # Note that there is a bug with -Wl,--icf=safe so it is not safe
-    # to enable. See https://sourceware.org/bugzilla/show_bug.cgi?id=17704.
-  endif()
+  # Don't use linker optimizations in debug builds since it slows down the
+  # linker in a context where the optimizations are not important.
+  if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG")
 
-  if(NOT LLVM_NO_DEAD_STRIP)
-    if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
-      # ld64's implementation of -dead_strip breaks tools that use plugins.
+    # Pass -O3 to the linker. This enabled different optimizations on different
+    # linkers.
+    if(NOT (${CMAKE_SYSTEM_NAME} MATCHES "Darwin|SunOS" OR WIN32))
       set_property(TARGET ${target_name} APPEND_STRING PROPERTY
-                   LINK_FLAGS " -Wl,-dead_strip")
-    elseif(NOT WIN32 AND NOT LLVM_LINKER_IS_GOLD)
-      # Object files are compiled with -ffunction-data-sections.
-      # Versions of bfd ld < 2.23.1 have a bug in --gc-sections that breaks
-      # tools that use plugins. Always pass --gc-sections once we require
-      # a newer linker.
+                   LINK_FLAGS " -Wl,-O3")
+    endif()
+
+    if(LLVM_LINKER_IS_GOLD)
+      # With gold gc-sections is always safe.
       set_property(TARGET ${target_name} APPEND_STRING PROPERTY
                    LINK_FLAGS " -Wl,--gc-sections")
+      # Note that there is a bug with -Wl,--icf=safe so it is not safe
+      # to enable. See https://sourceware.org/bugzilla/show_bug.cgi?id=17704.
+    endif()
+
+    if(NOT LLVM_NO_DEAD_STRIP)
+      if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+        # ld64's implementation of -dead_strip breaks tools that use plugins.
+        set_property(TARGET ${target_name} APPEND_STRING PROPERTY
+                     LINK_FLAGS " -Wl,-dead_strip")
+      elseif(${CMAKE_SYSTEM_NAME} MATCHES "SunOS")
+        set_property(TARGET ${target_name} APPEND_STRING PROPERTY
+                     LINK_FLAGS " -Wl,-z -Wl,discard-unused=sections")
+      elseif(NOT WIN32 AND NOT LLVM_LINKER_IS_GOLD)
+        # Object files are compiled with -ffunction-data-sections.
+        # Versions of bfd ld < 2.23.1 have a bug in --gc-sections that breaks
+        # tools that use plugins. Always pass --gc-sections once we require
+        # a newer linker.
+        set_property(TARGET ${target_name} APPEND_STRING PROPERTY
+                     LINK_FLAGS " -Wl,--gc-sections")
+      endif()
     endif()
   endif()
 endfunction(add_link_opts)
@@ -192,37 +192,118 @@ endfunction(add_link_opts)
 # Set each output directory according to ${CMAKE_CONFIGURATION_TYPES}.
 # Note: Don't set variables CMAKE_*_OUTPUT_DIRECTORY any more,
 # or a certain builder, for eaxample, msbuild.exe, would be confused.
-function(set_output_directory target bindir libdir)
-  # Do nothing if *_OUTPUT_INTDIR is empty.
-  if("${bindir}" STREQUAL "")
-    return()
-  endif()
+function(set_output_directory target)
+  cmake_parse_arguments(ARG "" "BINARY_DIR;LIBRARY_DIR" "" ${ARGN})
 
-  # moddir -- corresponding to LIBRARY_OUTPUT_DIRECTORY.
+  # module_dir -- corresponding to LIBRARY_OUTPUT_DIRECTORY.
   # It affects output of add_library(MODULE).
   if(WIN32 OR CYGWIN)
     # DLL platform
-    set(moddir ${bindir})
+    set(module_dir ${ARG_BINARY_DIR})
   else()
-    set(moddir ${libdir})
+    set(module_dir ${ARG_LIBRARY_DIR})
   endif()
   if(NOT "${CMAKE_CFG_INTDIR}" STREQUAL ".")
     foreach(build_mode ${CMAKE_CONFIGURATION_TYPES})
       string(TOUPPER "${build_mode}" CONFIG_SUFFIX)
-      string(REPLACE ${CMAKE_CFG_INTDIR} ${build_mode} bi ${bindir})
-      string(REPLACE ${CMAKE_CFG_INTDIR} ${build_mode} li ${libdir})
-      string(REPLACE ${CMAKE_CFG_INTDIR} ${build_mode} mi ${moddir})
-      set_target_properties(${target} PROPERTIES "RUNTIME_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${bi})
-      set_target_properties(${target} PROPERTIES "ARCHIVE_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${li})
-      set_target_properties(${target} PROPERTIES "LIBRARY_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${mi})
+      if(ARG_BINARY_DIR)
+        string(REPLACE ${CMAKE_CFG_INTDIR} ${build_mode} bi ${ARG_BINARY_DIR})
+        set_target_properties(${target} PROPERTIES "RUNTIME_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${bi})
+      endif()
+      if(ARG_LIBRARY_DIR)
+        string(REPLACE ${CMAKE_CFG_INTDIR} ${build_mode} li ${ARG_LIBRARY_DIR})
+        set_target_properties(${target} PROPERTIES "ARCHIVE_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${li})
+      endif()
+      if(module_dir)
+        string(REPLACE ${CMAKE_CFG_INTDIR} ${build_mode} mi ${module_dir})
+        set_target_properties(${target} PROPERTIES "LIBRARY_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${mi})
+      endif()
     endforeach()
   else()
-    set_target_properties(${target} PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${bindir})
-    set_target_properties(${target} PROPERTIES ARCHIVE_OUTPUT_DIRECTORY ${libdir})
-    set_target_properties(${target} PROPERTIES LIBRARY_OUTPUT_DIRECTORY ${moddir})
+    if(ARG_BINARY_DIR)
+      set_target_properties(${target} PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${ARG_BINARY_DIR})
+    endif()
+    if(ARG_LIBRARY_DIR)
+      set_target_properties(${target} PROPERTIES ARCHIVE_OUTPUT_DIRECTORY ${ARG_LIBRARY_DIR})
+    endif()
+    if(module_dir)
+      set_target_properties(${target} PROPERTIES LIBRARY_OUTPUT_DIRECTORY ${module_dir})
+    endif()
   endif()
 endfunction()
 
+# If on Windows and building with MSVC, add the resource script containing the
+# VERSIONINFO data to the project.  This embeds version resource information
+# into the output .exe or .dll.
+# TODO: Enable for MinGW Windows builds too.
+#
+function(add_windows_version_resource_file OUT_VAR)
+  set(sources ${ARGN})
+  if (MSVC)
+    set(resource_file ${LLVM_SOURCE_DIR}/resources/windows_version_resource.rc)
+    if(EXISTS ${resource_file})
+      set(sources ${sources} ${resource_file})
+      source_group("Resource Files" ${resource_file})
+      set(windows_resource_file ${resource_file} PARENT_SCOPE)
+    endif()
+  endif(MSVC)
+
+  set(${OUT_VAR} ${sources} PARENT_SCOPE)
+endfunction(add_windows_version_resource_file)
+
+# set_windows_version_resource_properties(name resource_file...
+#   VERSION_MAJOR int
+#     Optional major version number (defaults to LLVM_VERSION_MAJOR)
+#   VERSION_MINOR int
+#     Optional minor version number (defaults to LLVM_VERSION_MINOR)
+#   VERSION_PATCHLEVEL int
+#     Optional patchlevel version number (defaults to LLVM_VERSION_PATCH)
+#   VERSION_STRING
+#     Optional version string (defaults to PACKAGE_VERSION)
+#   PRODUCT_NAME
+#     Optional product name string (defaults to "LLVM")
+#   )
+function(set_windows_version_resource_properties name resource_file)
+  cmake_parse_arguments(ARG
+    ""
+    "VERSION_MAJOR;VERSION_MINOR;VERSION_PATCHLEVEL;VERSION_STRING;PRODUCT_NAME"
+    ""
+    ${ARGN})
+
+  if (NOT DEFINED ARG_VERSION_MAJOR)
+    set(ARG_VERSION_MAJOR ${LLVM_VERSION_MAJOR})
+  endif()
+
+  if (NOT DEFINED ARG_VERSION_MINOR)
+    set(ARG_VERSION_MINOR ${LLVM_VERSION_MINOR})
+  endif()
+
+  if (NOT DEFINED ARG_VERSION_PATCHLEVEL)
+    set(ARG_VERSION_PATCHLEVEL ${LLVM_VERSION_PATCH})
+  endif()
+
+  if (NOT DEFINED ARG_VERSION_STRING)
+    set(ARG_VERSION_STRING ${PACKAGE_VERSION})
+  endif()
+
+  if (NOT DEFINED ARG_PRODUCT_NAME)
+    set(ARG_PRODUCT_NAME "LLVM")
+  endif()
+
+  set_property(SOURCE ${resource_file}
+               PROPERTY COMPILE_FLAGS /nologo)
+  set_property(SOURCE ${resource_file}
+               PROPERTY COMPILE_DEFINITIONS
+               "RC_VERSION_FIELD_1=${ARG_VERSION_MAJOR}"
+               "RC_VERSION_FIELD_2=${ARG_VERSION_MINOR}"
+               "RC_VERSION_FIELD_3=${ARG_VERSION_PATCHLEVEL}"
+               "RC_VERSION_FIELD_4=0"
+               "RC_FILE_VERSION=\"${ARG_VERSION_STRING}\""
+               "RC_INTERNAL_NAME=\"${name}\""
+               "RC_PRODUCT_NAME=\"${ARG_PRODUCT_NAME}\""
+               "RC_PRODUCT_VERSION=\"${ARG_VERSION_STRING}\"")
+endfunction(set_windows_version_resource_properties)
+
 # llvm_add_library(name sources...
 #   SHARED;STATIC
 #     STATIC by default w/o BUILD_SHARED_LIBS.
@@ -230,6 +311,9 @@ endfunction()
 #   MODULE
 #     Target ${name} might not be created on unsupported platforms.
 #     Check with "if(TARGET ${name})".
+#   DISABLE_LLVM_LINK_LLVM_DYLIB
+#     Do not link this library to libLLVM, even if
+#     LLVM_LINK_LLVM_DYLIB is enabled.
 #   OUTPUT_NAME name
 #     Corresponds to OUTPUT_NAME in target properties.
 #   DEPENDS targets...
@@ -240,10 +324,12 @@ endfunction()
 #     Same semantics as target_link_libraries().
 #   ADDITIONAL_HEADERS
 #     May specify header files for IDE generators.
+#   SONAME
+#     Should set SONAME link flags and create symlinks
 #   )
 function(llvm_add_library name)
   cmake_parse_arguments(ARG
-    "MODULE;SHARED;STATIC"
+    "MODULE;SHARED;STATIC;DISABLE_LLVM_LINK_LLVM_DYLIB;SONAME"
     "OUTPUT_NAME"
     "ADDITIONAL_HEADERS;DEPENDS;LINK_COMPONENTS;LINK_LIBS;OBJLIBS"
     ${ARGN})
@@ -311,12 +397,22 @@ function(llvm_add_library name)
   if(ARG_MODULE)
     add_library(${name} MODULE ${ALL_FILES})
   elseif(ARG_SHARED)
+    add_windows_version_resource_file(ALL_FILES ${ALL_FILES})
     add_library(${name} SHARED ${ALL_FILES})
   else()
     add_library(${name} STATIC ${ALL_FILES})
   endif()
-  set_output_directory(${name} ${LLVM_RUNTIME_OUTPUT_INTDIR} ${LLVM_LIBRARY_OUTPUT_INTDIR})
-  llvm_update_compile_flags(${name})
+
+  if(DEFINED windows_resource_file)
+    set_windows_version_resource_properties(${name} ${windows_resource_file})
+    set(windows_resource_file ${windows_resource_file} PARENT_SCOPE)
+  endif()
+
+  set_output_directory(${name} BINARY_DIR ${LLVM_RUNTIME_OUTPUT_INTDIR} LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
+  # $<TARGET_OBJECTS> doesn't require compile flags.
+  if(NOT obj_name)
+    llvm_update_compile_flags(${name})
+  endif()
   add_link_opts( ${name} )
   if(ARG_OUTPUT_NAME)
     set_target_properties(${name}
@@ -338,11 +434,6 @@ function(llvm_add_library name)
         PREFIX ""
         )
     endif()
-
-    set_target_properties(${name}
-      PROPERTIES
-      SOVERSION ${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}
-      VERSION ${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}${LLVM_VERSION_SUFFIX})
   endif()
 
   if(ARG_MODULE OR ARG_SHARED)
@@ -357,6 +448,24 @@ function(llvm_add_library name)
     endif()
   endif()
 
+  if(ARG_SHARED AND UNIX)
+    if(NOT APPLE AND ARG_SONAME)
+      get_target_property(output_name ${name} OUTPUT_NAME)
+      if(${output_name} STREQUAL "output_name-NOTFOUND")
+        set(output_name ${name})
+      endif()
+      set(library_name ${output_name}-${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}${LLVM_VERSION_SUFFIX})
+      set(api_name ${output_name}-${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}${LLVM_VERSION_SUFFIX})
+      set_target_properties(${name} PROPERTIES OUTPUT_NAME ${library_name})
+      llvm_install_library_symlink(${api_name} ${library_name} SHARED
+        COMPONENT ${name}
+        ALWAYS_GENERATE)
+      llvm_install_library_symlink(${output_name} ${library_name} SHARED
+        COMPONENT ${name}
+        ALWAYS_GENERATE)
+    endif()
+  endif()
+
   # Add the explicit dependency information for this library.
   #
   # It would be nice to verify that we have the dependencies for this library
@@ -364,10 +473,14 @@ function(llvm_add_library name)
   # property has been set to an empty value.
   get_property(lib_deps GLOBAL PROPERTY LLVMBUILD_LIB_DEPS_${name})
 
-  llvm_map_components_to_libnames(llvm_libs
-    ${ARG_LINK_COMPONENTS}
-    ${LLVM_LINK_COMPONENTS}
-    )
+  if (LLVM_LINK_LLVM_DYLIB AND NOT ARG_STATIC AND NOT ARG_DISABLE_LLVM_LINK_LLVM_DYLIB)
+    set(llvm_libs LLVM)
+  else()
+    llvm_map_components_to_libnames(llvm_libs
+      ${ARG_LINK_COMPONENTS}
+      ${LLVM_LINK_COMPONENTS}
+      )
+  endif()
 
   if(CMAKE_VERSION VERSION_LESS 2.8.12)
     # Link libs w/o keywords, assuming PUBLIC.
@@ -399,26 +512,49 @@ function(llvm_add_library name)
       add_dependencies(${objlib} ${LLVM_COMMON_DEPENDS})
     endforeach()
   endif()
+
+  if(ARG_SHARED OR ARG_MODULE)
+    llvm_externalize_debuginfo(${name})
+  endif()
 endfunction()
 
 macro(add_llvm_library name)
+  cmake_parse_arguments(ARG
+    "SHARED"
+    ""
+    ""
+    ${ARGN})
   if( BUILD_SHARED_LIBS )
     llvm_add_library(${name} SHARED ${ARGN})
   else()
     llvm_add_library(${name} ${ARGN})
   endif()
-  set_property( GLOBAL APPEND PROPERTY LLVM_LIBS ${name} )
+  # The gtest libraries should not be installed or exported as a target
+  if ("${name}" STREQUAL gtest OR "${name}" STREQUAL gtest_main)
+    set(_is_gtest TRUE)
+  else()
+    set(_is_gtest FALSE)
+    set_property( GLOBAL APPEND PROPERTY LLVM_LIBS ${name} )
+  endif()
 
   if( EXCLUDE_FROM_ALL )
     set_target_properties( ${name} PROPERTIES EXCLUDE_FROM_ALL ON)
-  else()
+  elseif(NOT _is_gtest)
     if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY OR ${name} STREQUAL "LTO")
+      if(ARG_SHARED OR BUILD_SHARED_LIBS)
+        if(WIN32 OR CYGWIN)
+          set(install_type RUNTIME)
+        else()
+          set(install_type LIBRARY)
+        endif()
+      else()
+        set(install_type ARCHIVE)
+      endif()
+
       install(TARGETS ${name}
-        EXPORT LLVMExports
-        RUNTIME DESTINATION bin
-        LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX}
-        ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX}
-        COMPONENT ${name})
+            EXPORT LLVMExports
+            ${install_type} DESTINATION lib${LLVM_LIBDIR_SUFFIX}
+            COMPONENT ${name})
 
       if (NOT CMAKE_CONFIGURATION_TYPES)
         add_custom_target(install-${name}
@@ -463,13 +599,44 @@ endmacro(add_llvm_loadable_module name)
 
 
 macro(add_llvm_executable name)
-  llvm_process_sources( ALL_FILES ${ARGN} )
+  cmake_parse_arguments(ARG "DISABLE_LLVM_LINK_LLVM_DYLIB" "" "" ${ARGN})
+  llvm_process_sources( ALL_FILES ${ARG_UNPARSED_ARGUMENTS} )
+
+  # Generate objlib
+  if(LLVM_ENABLE_OBJLIB)
+    # Generate an obj library for both targets.
+    set(obj_name "obj.${name}")
+    add_library(${obj_name} OBJECT EXCLUDE_FROM_ALL
+      ${ALL_FILES}
+      )
+    llvm_update_compile_flags(${obj_name})
+    set(ALL_FILES "$<TARGET_OBJECTS:${obj_name}>")
+
+    set_target_properties(${obj_name} PROPERTIES FOLDER "Object Libraries")
+  endif()
+
+  add_windows_version_resource_file(ALL_FILES ${ALL_FILES})
+
+  if(XCODE)
+    # Note: the dummy.cpp source file provides no definitions. However,
+    # it forces Xcode to properly link the static library.
+    list(APPEND ALL_FILES "${LLVM_MAIN_SRC_DIR}/cmake/dummy.cpp")
+  endif()
+
   if( EXCLUDE_FROM_ALL )
     add_executable(${name} EXCLUDE_FROM_ALL ${ALL_FILES})
   else()
     add_executable(${name} ${ALL_FILES})
   endif()
-  llvm_update_compile_flags(${name})
+
+  if(DEFINED windows_resource_file)
+    set_windows_version_resource_properties(${name} ${windows_resource_file})
+  endif()
+
+  # $<TARGET_OBJECTS> doesn't require compile flags.
+  if(NOT LLVM_ENABLE_OBJLIB)
+    llvm_update_compile_flags(${name})
+  endif()
   add_link_opts( ${name} )
 
   # Do not add -Dname_EXPORTS to the command-line when building files in this
@@ -482,25 +649,38 @@ macro(add_llvm_executable name)
     add_llvm_symbol_exports( ${name} ${LLVM_EXPORTED_SYMBOL_FILE} )
   endif(LLVM_EXPORTED_SYMBOL_FILE)
 
+  if (LLVM_LINK_LLVM_DYLIB AND NOT ARG_DISABLE_LLVM_LINK_LLVM_DYLIB)
+    set(USE_SHARED USE_SHARED)
+  endif()
+
   set(EXCLUDE_FROM_ALL OFF)
-  set_output_directory(${name} ${LLVM_RUNTIME_OUTPUT_INTDIR} ${LLVM_LIBRARY_OUTPUT_INTDIR})
-  llvm_config( ${name} ${LLVM_LINK_COMPONENTS} )
+  set_output_directory(${name} BINARY_DIR ${LLVM_RUNTIME_OUTPUT_INTDIR} LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
+  llvm_config( ${name} ${USE_SHARED} ${LLVM_LINK_COMPONENTS} )
   if( LLVM_COMMON_DEPENDS )
     add_dependencies( ${name} ${LLVM_COMMON_DEPENDS} )
   endif( LLVM_COMMON_DEPENDS )
+
+  llvm_externalize_debuginfo(${name})
 endmacro(add_llvm_executable name)
 
 function(export_executable_symbols target)
   if (NOT MSVC) # MSVC's linker doesn't support exporting all symbols.
     set_target_properties(${target} PROPERTIES ENABLE_EXPORTS 1)
+    if (APPLE)
+      set_property(TARGET ${target} APPEND_STRING PROPERTY
+        LINK_FLAGS "-rdynamic")
+    endif()
   endif()
 endfunction()
 
-
-set (LLVM_TOOLCHAIN_TOOLS
-  llvm-ar
-  llvm-objdump
-  )
+if(NOT LLVM_TOOLCHAIN_TOOLS)
+  set (LLVM_TOOLCHAIN_TOOLS
+    llvm-ar
+    llvm-ranlib
+    llvm-lib
+    llvm-objdump
+    )
+endif()
 
 macro(add_llvm_tool name)
   if( NOT LLVM_BUILD_TOOLS )
@@ -545,8 +725,20 @@ endmacro(add_llvm_example name)
 
 
 macro(add_llvm_utility name)
-  add_llvm_executable(${name} ${ARGN})
+  add_llvm_executable(${name} DISABLE_LLVM_LINK_LLVM_DYLIB ${ARGN})
   set_target_properties(${name} PROPERTIES FOLDER "Utils")
+  if( LLVM_INSTALL_UTILS )
+    install (TARGETS ${name}
+      RUNTIME DESTINATION bin
+      COMPONENT ${name})
+    if (NOT CMAKE_CONFIGURATION_TYPES)
+      add_custom_target(install-${name}
+                        DEPENDS ${name}
+                        COMMAND "${CMAKE_COMMAND}"
+                                -DCMAKE_INSTALL_COMPONENT=${name}
+                                -P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
+    endif()
+  endif()
 endmacro(add_llvm_utility name)
 
 
@@ -558,48 +750,104 @@ macro(add_llvm_target target_name)
   set( CURRENT_LLVM_TARGET LLVM${target_name} )
 endmacro(add_llvm_target)
 
-# Add external project that may want to be built as part of llvm such as Clang,
-# lld, and Polly. This adds two options. One for the source directory of the
-# project, which defaults to ${CMAKE_CURRENT_SOURCE_DIR}/${name}. Another to
-# enable or disable building it with everything else.
-# Additional parameter can be specified as the name of directory.
-macro(add_llvm_external_project name)
+function(canonicalize_tool_name name output)
+  string(REPLACE "${CMAKE_CURRENT_SOURCE_DIR}/" "" nameStrip ${name})
+  string(REPLACE "-" "_" nameUNDERSCORE ${nameStrip})
+  string(TOUPPER ${nameUNDERSCORE} nameUPPER)
+  set(${output} "${nameUPPER}" PARENT_SCOPE)
+endfunction(canonicalize_tool_name)
+
+# Custom add_subdirectory wrapper
+# Takes in a project name (i.e. LLVM), the the subdirectory name, and an
+# and an optional path if it differs from the name.
+macro(add_llvm_subdirectory project type name)
   set(add_llvm_external_dir "${ARGN}")
   if("${add_llvm_external_dir}" STREQUAL "")
     set(add_llvm_external_dir ${name})
   endif()
-  list(APPEND LLVM_IMPLICIT_PROJECT_IGNORE "${CMAKE_CURRENT_SOURCE_DIR}/${add_llvm_external_dir}")
-  string(REPLACE "-" "_" nameUNDERSCORE ${name})
-  string(TOUPPER ${nameUNDERSCORE} nameUPPER)
-  set(LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/${add_llvm_external_dir}"
+  canonicalize_tool_name(${name} nameUPPER)
+  if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${add_llvm_external_dir}/CMakeLists.txt)
+    # Treat it as in-tree subproject.
+    option(${project}_${type}_${nameUPPER}_BUILD
+           "Whether to build ${name} as part of ${project}" On)
+    mark_as_advanced(${project}_${type}_${name}_BUILD)
+    if(${project}_${type}_${nameUPPER}_BUILD)
+      add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/${add_llvm_external_dir} ${add_llvm_external_dir})
+      # Don't process it in add_llvm_implicit_projects().
+      set(${project}_${type}_${nameUPPER}_BUILD OFF)
+    endif()
+  else()
+    set(LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR
+      "${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR}"
       CACHE PATH "Path to ${name} source directory")
-  if (NOT ${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR} STREQUAL ""
-      AND EXISTS ${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR}/CMakeLists.txt)
-    option(LLVM_EXTERNAL_${nameUPPER}_BUILD
-           "Whether to build ${name} as part of LLVM" ON)
-    if (LLVM_EXTERNAL_${nameUPPER}_BUILD)
-      add_subdirectory(${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR} ${add_llvm_external_dir})
+    set(${project}_${type}_${nameUPPER}_BUILD_DEFAULT ON)
+    if(NOT LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR OR NOT EXISTS ${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR})
+      set(${project}_${type}_${nameUPPER}_BUILD_DEFAULT OFF)
+    endif()
+    if("${LLVM_EXTERNAL_${nameUPPER}_BUILD}" STREQUAL "OFF")
+      set(${project}_${type}_${nameUPPER}_BUILD_DEFAULT OFF)
+    endif()
+    option(${project}_${type}_${nameUPPER}_BUILD
+      "Whether to build ${name} as part of LLVM"
+      ${${project}_${type}_${nameUPPER}_BUILD_DEFAULT})
+    if (${project}_${type}_${nameUPPER}_BUILD)
+      if(EXISTS ${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR})
+        add_subdirectory(${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR} ${add_llvm_external_dir})
+      elseif(NOT "${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR}" STREQUAL "")
+        message(WARNING "Nonexistent directory for ${name}: ${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR}")
+      endif()
+      # FIXME: It'd be redundant.
+      set(${project}_${type}_${nameUPPER}_BUILD Off)
     endif()
   endif()
-endmacro(add_llvm_external_project)
+endmacro()
+
+# Add external project that may want to be built as part of llvm such as Clang,
+# lld, and Polly. This adds two options. One for the source directory of the
+# project, which defaults to ${CMAKE_CURRENT_SOURCE_DIR}/${name}. Another to
+# enable or disable building it with everything else.
+# Additional parameter can be specified as the name of directory.
+macro(add_llvm_external_project name)
+  add_llvm_subdirectory(LLVM TOOL ${name} ${ARGN})
+endmacro()
 
 macro(add_llvm_tool_subdirectory name)
-  list(APPEND LLVM_IMPLICIT_PROJECT_IGNORE "${CMAKE_CURRENT_SOURCE_DIR}/${name}")
-  add_subdirectory(${name})
+  add_llvm_external_project(${name})
 endmacro(add_llvm_tool_subdirectory)
 
-macro(ignore_llvm_tool_subdirectory name)
-  list(APPEND LLVM_IMPLICIT_PROJECT_IGNORE "${CMAKE_CURRENT_SOURCE_DIR}/${name}")
-endmacro(ignore_llvm_tool_subdirectory)
+function(get_project_name_from_src_var var output)
+  string(REGEX MATCH "LLVM_EXTERNAL_(.*)_SOURCE_DIR"
+         MACHED_TOOL "${var}")
+  if(MACHED_TOOL)
+    set(${output} ${CMAKE_MATCH_1} PARENT_SCOPE)
+  else()
+    set(${output} PARENT_SCOPE)
+  endif()
+endfunction()
+
+function(create_subdirectory_options project type)
+  file(GLOB sub-dirs "${CMAKE_CURRENT_SOURCE_DIR}/*")
+  foreach(dir ${sub-dirs})
+    if(IS_DIRECTORY "${dir}" AND EXISTS "${dir}/CMakeLists.txt")
+      canonicalize_tool_name(${dir} name)
+      option(${project}_${type}_${name}_BUILD
+           "Whether to build ${name} as part of ${project}" On)
+      mark_as_advanced(${project}_${type}_${name}_BUILD)
+    endif()
+  endforeach()
+endfunction(create_subdirectory_options)
 
-function(add_llvm_implicit_external_projects)
+function(create_llvm_tool_options)
+  create_subdirectory_options(LLVM TOOL)
+endfunction(create_llvm_tool_options)
+
+function(add_llvm_implicit_projects)
   set(list_of_implicit_subdirs "")
   file(GLOB sub-dirs "${CMAKE_CURRENT_SOURCE_DIR}/*")
   foreach(dir ${sub-dirs})
-    if(IS_DIRECTORY "${dir}")
-      list(FIND LLVM_IMPLICIT_PROJECT_IGNORE "${dir}" tool_subdir_ignore)
-      if( tool_subdir_ignore EQUAL -1
-          AND EXISTS "${dir}/CMakeLists.txt")
+    if(IS_DIRECTORY "${dir}" AND EXISTS "${dir}/CMakeLists.txt")
+      canonicalize_tool_name(${dir} name)
+      if (LLVM_TOOL_${name}_BUILD)
         get_filename_component(fn "${dir}" NAME)
         list(APPEND list_of_implicit_subdirs "${fn}")
       endif()
@@ -609,7 +857,7 @@ function(add_llvm_implicit_external_projects)
   foreach(external_proj ${list_of_implicit_subdirs})
     add_llvm_external_project("${external_proj}")
   endforeach()
-endfunction(add_llvm_implicit_external_projects)
+endfunction(add_llvm_implicit_projects)
 
 # Generic support for adding a unittest.
 function(add_unittest test_suite test_name)
@@ -630,7 +878,7 @@ function(add_unittest test_suite test_name)
 
   add_llvm_executable(${test_name} ${ARGN})
   set(outdir ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR})
-  set_output_directory(${test_name} ${outdir} ${outdir})
+  set_output_directory(${test_name} BINARY_DIR ${outdir} LIBRARY_DIR ${outdir})
   target_link_libraries(${test_name}
     gtest
     gtest_main
@@ -659,8 +907,13 @@ function(llvm_add_go_executable binary pkgpath)
       set(cppflags "${cppflags} -I${d}")
     endforeach(d)
     set(ldflags "${CMAKE_EXE_LINKER_FLAGS}")
+    if (LLVM_LINK_LLVM_DYLIB)
+      set(linkmode "dylib")
+    else()
+      set(linkmode "component-libs")
+    endif()
     add_custom_command(OUTPUT ${binpath}
-      COMMAND ${CMAKE_BINARY_DIR}/bin/llvm-go "cc=${cc}" "cxx=${cxx}" "cppflags=${cppflags}" "ldflags=${ldflags}"
+      COMMAND ${CMAKE_BINARY_DIR}/bin/llvm-go "go=${GO_EXECUTABLE}" "cc=${cc}" "cxx=${cxx}" "cppflags=${cppflags}" "ldflags=${ldflags}" "linkmode=${linkmode}"
               ${ARG_GOFLAGS} build -o ${binpath} ${pkgpath}
       DEPENDS llvm-config ${CMAKE_BINARY_DIR}/bin/llvm-go${CMAKE_EXECUTABLE_SUFFIX}
               ${llvmlibs} ${ARG_DEPENDS}
@@ -731,7 +984,7 @@ endfunction()
 # A raw function to create a lit target. This is used to implement the testuite
 # management functions.
 function(add_lit_target target comment)
-  parse_arguments(ARG "PARAMS;DEPENDS;ARGS" "" ${ARGN})
+  cmake_parse_arguments(ARG "" "" "PARAMS;DEPENDS;ARGS" ${ARGN})
   set(LIT_ARGS "${ARG_ARGS} ${LLVM_LIT_ARGS}")
   separate_arguments(LIT_ARGS)
   if (NOT CMAKE_CFG_INTDIR STREQUAL ".")
@@ -746,9 +999,9 @@ function(add_lit_target target comment)
   foreach(param ${ARG_PARAMS})
     list(APPEND LIT_COMMAND --param ${param})
   endforeach()
-  if (ARG_DEFAULT_ARGS)
+  if (ARG_UNPARSED_ARGUMENTS)
     add_custom_target(${target}
-      COMMAND ${LIT_COMMAND} ${ARG_DEFAULT_ARGS}
+      COMMAND ${LIT_COMMAND} ${ARG_UNPARSED_ARGUMENTS}
       COMMENT "${comment}"
       ${cmake_3_2_USES_TERMINAL}
       )
@@ -767,12 +1020,12 @@ endfunction()
 
 # A function to add a set of lit test suites to be driven through 'check-*' targets.
 function(add_lit_testsuite target comment)
-  parse_arguments(ARG "PARAMS;DEPENDS;ARGS" "" ${ARGN})
+  cmake_parse_arguments(ARG "" "" "PARAMS;DEPENDS;ARGS" ${ARGN})
 
   # EXCLUDE_FROM_ALL excludes the test ${target} out of check-all.
   if(NOT EXCLUDE_FROM_ALL)
     # Register the testsuites, params and depends for the global check rule.
-    set_property(GLOBAL APPEND PROPERTY LLVM_LIT_TESTSUITES ${ARG_DEFAULT_ARGS})
+    set_property(GLOBAL APPEND PROPERTY LLVM_LIT_TESTSUITES ${ARG_UNPARSED_ARGUMENTS})
     set_property(GLOBAL APPEND PROPERTY LLVM_LIT_PARAMS ${ARG_PARAMS})
     set_property(GLOBAL APPEND PROPERTY LLVM_LIT_DEPENDS ${ARG_DEPENDS})
     set_property(GLOBAL APPEND PROPERTY LLVM_LIT_EXTRA_ARGS ${ARG_ARGS})
@@ -780,9 +1033,165 @@ function(add_lit_testsuite target comment)
 
   # Produce a specific suffixed check rule.
   add_lit_target(${target} ${comment}
-    ${ARG_DEFAULT_ARGS}
+    ${ARG_UNPARSED_ARGUMENTS}
     PARAMS ${ARG_PARAMS}
     DEPENDS ${ARG_DEPENDS}
     ARGS ${ARG_ARGS}
     )
 endfunction()
+
+function(add_lit_testsuites project directory)
+  if (NOT CMAKE_CONFIGURATION_TYPES)
+    cmake_parse_arguments(ARG "" "" "PARAMS;DEPENDS;ARGS" ${ARGN})
+    file(GLOB_RECURSE litCfg ${directory}/lit*.cfg)
+    set(lit_suites)
+    foreach(f ${litCfg})
+      get_filename_component(dir ${f} DIRECTORY)
+      set(lit_suites ${lit_suites} ${dir})
+    endforeach()
+    list(REMOVE_DUPLICATES lit_suites)
+    foreach(dir ${lit_suites})
+      string(REPLACE ${directory} "" name_slash ${dir})
+      if (name_slash)
+        string(REPLACE "/" "-" name_slash ${name_slash})
+        string(REPLACE "\\" "-" name_dashes ${name_slash})
+        string(TOLOWER "${project}${name_dashes}" name_var)
+        add_lit_target("check-${name_var}" "Running lit suite ${dir}"
+          ${dir}
+          PARAMS ${ARG_PARAMS}
+          DEPENDS ${ARG_DEPENDS}
+          ARGS ${ARG_ARGS}
+        )
+      endif()
+    endforeach()
+  endif()
+endfunction()
+
+function(llvm_install_library_symlink name dest type)
+  cmake_parse_arguments(ARG "ALWAYS_GENERATE" "COMPONENT" "" ${ARGN})
+  foreach(path ${CMAKE_MODULE_PATH})
+    if(EXISTS ${path}/LLVMInstallSymlink.cmake)
+      set(INSTALL_SYMLINK ${path}/LLVMInstallSymlink.cmake)
+      break()
+    endif()
+  endforeach()
+
+  set(component ${ARG_COMPONENT})
+  if(NOT component)
+    set(component ${name})
+  endif()
+
+  set(full_name ${CMAKE_${type}_LIBRARY_PREFIX}${name}${CMAKE_${type}_LIBRARY_SUFFIX})
+  set(full_dest ${CMAKE_${type}_LIBRARY_PREFIX}${dest}${CMAKE_${type}_LIBRARY_SUFFIX})
+
+  set(output_dir lib${LLVM_LIBDIR_SUFFIX})
+  if(WIN32 AND "${type}" STREQUAL "SHARED")
+    set(output_dir bin)
+  endif()
+
+  install(SCRIPT ${INSTALL_SYMLINK}
+          CODE "install_symlink(${full_name} ${full_dest} ${output_dir})"
+          COMPONENT ${component})
+
+  if (NOT CMAKE_CONFIGURATION_TYPES AND NOT ARG_ALWAYS_GENERATE)
+    add_custom_target(install-${name}
+                      DEPENDS ${name} ${dest} install-${dest}
+                      COMMAND "${CMAKE_COMMAND}"
+                              -DCMAKE_INSTALL_COMPONENT=${name}
+                              -P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
+  endif()
+endfunction()
+
+function(llvm_install_symlink name dest)
+  cmake_parse_arguments(ARG "ALWAYS_GENERATE" "" "" ${ARGN})
+  foreach(path ${CMAKE_MODULE_PATH})
+    if(EXISTS ${path}/LLVMInstallSymlink.cmake)
+      set(INSTALL_SYMLINK ${path}/LLVMInstallSymlink.cmake)
+      break()
+    endif()
+  endforeach()
+
+  if(ARG_ALWAYS_GENERATE)
+    set(component ${dest})
+  else()
+    set(component ${name})
+  endif()
+
+  set(full_name ${name}${CMAKE_EXECUTABLE_SUFFIX})
+  set(full_dest ${dest}${CMAKE_EXECUTABLE_SUFFIX})
+
+  install(SCRIPT ${INSTALL_SYMLINK}
+          CODE "install_symlink(${full_name} ${full_dest} bin)"
+          COMPONENT ${component})
+
+  if (NOT CMAKE_CONFIGURATION_TYPES AND NOT ARG_ALWAYS_GENERATE)
+    add_custom_target(install-${name}
+                      DEPENDS ${name} ${dest} install-${dest}
+                      COMMAND "${CMAKE_COMMAND}"
+                              -DCMAKE_INSTALL_COMPONENT=${name}
+                              -P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
+  endif()
+endfunction()
+
+function(add_llvm_tool_symlink name dest)
+  cmake_parse_arguments(ARG "ALWAYS_GENERATE" "" "" ${ARGN})
+  if(UNIX)
+    set(LLVM_LINK_OR_COPY create_symlink)
+    set(dest_binary "${dest}${CMAKE_EXECUTABLE_SUFFIX}")
+  else()
+    set(LLVM_LINK_OR_COPY copy)
+    set(dest_binary "${LLVM_RUNTIME_OUTPUT_INTDIR}/${dest}${CMAKE_EXECUTABLE_SUFFIX}")
+  endif()
+
+  set(output_path "${LLVM_RUNTIME_OUTPUT_INTDIR}/${name}${CMAKE_EXECUTABLE_SUFFIX}")
+
+  if(ARG_ALWAYS_GENERATE)
+    set_property(DIRECTORY APPEND PROPERTY
+      ADDITIONAL_MAKE_CLEAN_FILES ${dest_binary})
+    add_custom_command(TARGET ${dest} POST_BUILD
+      COMMAND ${CMAKE_COMMAND} -E ${LLVM_LINK_OR_COPY} "${dest_binary}" "${output_path}")
+  else()
+    add_custom_command(OUTPUT ${output_path}
+                     COMMAND ${CMAKE_COMMAND} -E ${LLVM_LINK_OR_COPY} "${dest_binary}" "${output_path}"
+                     DEPENDS ${dest})
+    add_custom_target(${name} ALL DEPENDS ${output_path})
+    set_target_properties(${name} PROPERTIES FOLDER Tools)
+
+    # Make sure the parent tool is a toolchain tool, otherwise exclude this tool
+    list(FIND LLVM_TOOLCHAIN_TOOLS ${dest} LLVM_IS_${dest}_TOOLCHAIN_TOOL)
+    if (NOT LLVM_IS_${dest}_TOOLCHAIN_TOOL GREATER -1)
+      set(LLVM_IS_${name}_TOOLCHAIN_TOOL ${LLVM_IS_${dest}_TOOLCHAIN_TOOL})
+    else()
+      list(FIND LLVM_TOOLCHAIN_TOOLS ${name} LLVM_IS_${name}_TOOLCHAIN_TOOL)
+    endif()
+
+    # LLVM_IS_${name}_TOOLCHAIN_TOOL will only be greater than -1 if both this
+    # tool and its parent tool are in LLVM_TOOLCHAIN_TOOLS
+    if (LLVM_IS_${name}_TOOLCHAIN_TOOL GREATER -1 OR NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
+      if( LLVM_BUILD_TOOLS )
+        llvm_install_symlink(${name} ${dest})
+      endif()
+    endif()
+  endif()
+endfunction()
+
+function(llvm_externalize_debuginfo name)
+  if(NOT LLVM_EXTERNALIZE_DEBUGINFO)
+    return()
+  endif()
+
+  if(APPLE)
+    if(CMAKE_CXX_FLAGS MATCHES "-flto"
+      OR CMAKE_CXX_FLAGS_${uppercase_CMAKE_BUILD_TYPE} MATCHES "-flto")
+
+      set(lto_object ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/${name}-lto.o)
+      set_property(TARGET ${name} APPEND_STRING PROPERTY
+        LINK_FLAGS " -Wl,-object_path_lto,${lto_object}")
+    endif()
+    add_custom_command(TARGET ${name} POST_BUILD
+      COMMAND xcrun dsymutil $<TARGET_FILE:${name}>
+      COMMAND xcrun strip -Sl $<TARGET_FILE:${name}>)
+  else()
+    message(FATAL_ERROR "LLVM_EXTERNALIZE_DEBUGINFO isn't implemented for non-darwin platforms!")
+  endif()
+endfunction()