[CMake] Add experimental support for building compiler-rt for iOS

Summary: This is a reunification of three separate reviews D11073, D11082, D11083. Having them separate was not constructive even though the patches were smaller because it led to fragmented conversations, and this is really all about one change. This patch incorporates feedback from samsonov, and refactors the hacky darwin code out of the root CMakeLists.txt and int config-ix.cmake. Reviewers: zaks.anna, bogner, kubabrecka, chandlerc, samsonov Subscribers: jevinskie, filcab, llvm-commits Differential Revision: http://reviews.llvm.org/D11820 llvm-svn: 244948
2015-08-13 20:38:16 +00:00 · 2015-08-13 20:38:16 +00:00 · 361231ecd5
parent a195386ca1
commit 361231ecd5
5 changed files with 279 additions and 85 deletions
--- a/compiler-rt/CMakeLists.txt
+++ b/compiler-rt/CMakeLists.txt
@ -276,66 +276,6 @@ append_list_if(COMPILER_RT_HAS_WD4291_FLAG /wd4291 SANITIZER_COMMON_CFLAGS)
 append_list_if(COMPILER_RT_HAS_WD4391_FLAG /wd4391 SANITIZER_COMMON_CFLAGS)
 append_list_if(COMPILER_RT_HAS_WD4722_FLAG /wd4722 SANITIZER_COMMON_CFLAGS)
 append_list_if(COMPILER_RT_HAS_WD4800_FLAG /wd4800 SANITIZER_COMMON_CFLAGS)
-if(APPLE)
-  macro(find_darwin_sdk_dir var sdk_name)
-    # Let's first try the internal SDK, otherwise use the public SDK.
-    execute_process(
-      COMMAND xcodebuild -version -sdk ${sdk_name}.internal Path
-      OUTPUT_VARIABLE ${var}
-      OUTPUT_STRIP_TRAILING_WHITESPACE
-      ERROR_FILE /dev/null
-    )
-    if(${var} STREQUAL "")
-      execute_process(
-        COMMAND xcodebuild -version -sdk ${sdk_name} Path
-        OUTPUT_VARIABLE ${var}
-        OUTPUT_STRIP_TRAILING_WHITESPACE
-        ERROR_FILE /dev/null
-      )
-    endif()
-  endmacro()
-
-  find_darwin_sdk_dir(OSX_SDK_DIR macosx)
-  find_darwin_sdk_dir(IOSSIM_SDK_DIR iphonesimulator)
-
-  set(SANITIZER_COMMON_SUPPORTED_OS osx)
-  if(NOT SANITIZER_MIN_OSX_VERSION)
-    string(REGEX MATCH "-mmacosx-version-min=([.0-9]+)"
-           MACOSX_VERSION_MIN_FLAG "${CMAKE_CXX_FLAGS}")
-    if(MACOSX_VERSION_MIN_FLAG)
-      set(SANITIZER_MIN_OSX_VERSION "${CMAKE_MATCH_1}")
-    elseif(CMAKE_OSX_DEPLOYMENT_TARGET)
-      set(SANITIZER_MIN_OSX_VERSION ${CMAKE_OSX_DEPLOYMENT_TARGET})
-    else()
-      set(SANITIZER_MIN_OSX_VERSION 10.9)
-      if(IOSSIM_SDK_DIR)
-        list(APPEND SANITIZER_COMMON_SUPPORTED_OS iossim)
-      endif()
-    endif()
-  endif()
-  if(SANITIZER_MIN_OSX_VERSION VERSION_LESS "10.7")
-    message(FATAL_ERROR "Too old OS X version: ${SANITIZER_MIN_OSX_VERSION}")
-  endif()
-
-  set(CMAKE_OSX_DEPLOYMENT_TARGET "") # We evaluate target OS X version above.
-  set(DARWIN_osx_CFLAGS -mmacosx-version-min=${SANITIZER_MIN_OSX_VERSION}
-    -stdlib=libc++)
-  set(DARWIN_iossim_CFLAGS
-    -stdlib=libc++
-    -mios-simulator-version-min=7.0 -isysroot ${IOSSIM_SDK_DIR})
-  set(DARWIN_osx_LINKFLAGS -mmacosx-version-min=${SANITIZER_MIN_OSX_VERSION}
-    -stdlib=libc++ -lc++ -lc++abi)
-  set(DARWIN_iossim_LINKFLAGS
-    -stdlib=libc++ -lc++ -lc++abi
-    -Wl,-ios_simulator_version_min,7.0.0
-    -mios-simulator-version-min=7.0
-    -isysroot ${IOSSIM_SDK_DIR})
-
-  if(OSX_SDK_DIR)
-    list(APPEND DARWIN_osx_CFLAGS -isysroot ${OSX_SDK_DIR})
-    list(APPEND DARWIN_osx_LINKFLAGS -isysroot ${OSX_SDK_DIR})
-  endif()
-endif()

 if(APPLE AND SANITIZER_MIN_OSX_VERSION VERSION_LESS "10.9")
  # Mac OS X prior to 10.9 had problems with exporting symbols from
--- a/compiler-rt/cmake/Modules/AddCompilerRT.cmake
+++ b/compiler-rt/cmake/Modules/AddCompilerRT.cmake
@ -19,6 +19,7 @@ function(add_compiler_rt_object_libraries name)
      set(libname "${name}.${os}")
      set(libnames ${libnames} ${libname})
      set(extra_cflags_${libname} ${DARWIN_${os}_CFLAGS})
+      list_union(LIB_ARCHS_${libname} DARWIN_${os}_ARCHS LIB_ARCHS)
    endforeach()
  else()
    foreach(arch ${LIB_ARCHS})
@ -39,7 +40,8 @@ function(add_compiler_rt_object_libraries name)
    set_property(TARGET ${libname} APPEND PROPERTY
      COMPILE_DEFINITIONS ${LIB_DEFS})
    if(APPLE)
-      set_target_properties(${libname} PROPERTIES OSX_ARCHITECTURES "${LIB_ARCHS}")
+      set_target_properties(${libname} PROPERTIES
+        OSX_ARCHITECTURES "${LIB_ARCHS_${libname}}")
    endif()
  endforeach()
 endfunction()
@ -118,8 +120,9 @@ macro(add_compiler_rt_darwin_dynamic_runtime name os)
  set_target_link_flags(${name} ${LIB_LINKFLAGS} ${DARWIN_${os}_LINKFLAGS})
  set_property(TARGET ${name} APPEND PROPERTY
    COMPILE_DEFINITIONS ${LIB_DEFS})
+  list_union(filtered_arches DARWIN_${os}_ARCHS LIB_ARCHS)
  set_target_properties(${name} PROPERTIES
-    OSX_ARCHITECTURES "${LIB_ARCHS}"
+    OSX_ARCHITECTURES "${filtered_arches}"
    LIBRARY_OUTPUT_DIRECTORY ${COMPILER_RT_LIBRARY_OUTPUT_DIR})
  install(TARGETS ${name}
    LIBRARY DESTINATION ${COMPILER_RT_LIBRARY_INSTALL_DIR})
--- a/compiler-rt/cmake/Modules/CompilerRTDarwinUtils.cmake
+++ b/compiler-rt/cmake/Modules/CompilerRTDarwinUtils.cmake
@ -0,0 +1,79 @@
+# On OS X SDKs can be installed anywhere on the base system and xcode-select can
+# set the default Xcode to use. This function finds the SDKs that are present in
+# the current Xcode.
+function(find_darwin_sdk_dir var sdk_name)
+  # Let's first try the internal SDK, otherwise use the public SDK.
+  execute_process(
+    COMMAND xcodebuild -version -sdk ${sdk_name}.internal Path
+    OUTPUT_VARIABLE var_internal
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+    ERROR_FILE /dev/null
+  )
+  if("" STREQUAL "${var_internal}")
+    execute_process(
+      COMMAND xcodebuild -version -sdk ${sdk_name} Path
+      OUTPUT_VARIABLE var_internal
+      OUTPUT_STRIP_TRAILING_WHITESPACE
+      ERROR_FILE /dev/null
+    )
+  endif()
+  set(${var} ${var_internal} PARENT_SCOPE)
+endfunction()
+
+# There isn't a clear mapping of what architectures are supported with a given
+# target platform, but ld's version output does list the architectures it can
+# link for.
+function(darwin_get_toolchain_supported_archs output_var)
+  execute_process(
+    COMMAND ld -v
+    ERROR_VARIABLE LINKER_VERSION)
+
+  string(REGEX MATCH "configured to support archs: ([^\n]+)"
+         ARCHES_MATCHED "${LINKER_VERSION}")
+  if(ARCHES_MATCHED)
+    set(ARCHES "${CMAKE_MATCH_1}")
+    message("Matched ARCHES: ${ARCHES}")
+    string(REPLACE " " ";" ARCHES ${ARCHES})
+  else()
+    # If auto-detecting fails, fall back to a default set
+    message(WARNING "Detecting supported architectures from 'ld -v' failed. Returning default set.")
+    set(ARCHES "i386;x86_64;armv7;armv7s;arm64")
+  endif()
+  
+  set(${output_var} ${ARCHES} PARENT_SCOPE)
+endfunction()
+
+# This function takes an OS and a list of architectures and identifies the
+# subset of the architectures list that the installed toolchain can target.
+function(darwin_test_archs os valid_archs)
+  set(archs ${ARGN})
+  message(STATUS "Finding valid architectures for ${os}...")
+  set(SIMPLE_CPP ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/src.cpp)
+  file(WRITE ${SIMPLE_CPP} "#include <iostream>\nint main() { return 0; }\n")
+
+  set(os_linker_flags)
+  foreach(flag ${DARWIN_${os}_LINKFLAGS})
+    set(os_linker_flags "${os_linker_flags} ${flag}")
+  endforeach()
+
+  # The simple program will build for x86_64h on the simulator because it is 
+  # compatible with x86_64 libraries (mostly), but since x86_64h isn't actually
+  # a valid or useful architecture for the iOS simulator we should drop it.
+  if(${os} STREQUAL "iossim")
+    list(REMOVE_ITEM archs "x86_64h")
+  endif()
+
+  set(working_archs)
+  foreach(arch ${archs})
+    
+    set(arch_linker_flags "-arch ${arch} ${os_linker_flags}")
+    try_compile(CAN_TARGET_${os}_${arch} ${CMAKE_BINARY_DIR} ${SIMPLE_CPP}
+                COMPILE_DEFINITIONS "-v -arch ${arch}" ${DARWIN_${os}_CFLAGS}
+                CMAKE_FLAGS "-DCMAKE_EXE_LINKER_FLAGS=${arch_linker_flags}"
+                OUTPUT_VARIABLE TEST_OUTPUT)
+    if(${CAN_TARGET_${os}_${arch}})
+      list(APPEND working_archs ${arch})
+    endif()
+  endforeach()
+  set(${valid_archs} ${working_archs} PARENT_SCOPE)
+endfunction()
--- a/compiler-rt/cmake/Modules/CompilerRTUtils.cmake
+++ b/compiler-rt/cmake/Modules/CompilerRTUtils.cmake
@ -57,3 +57,13 @@ macro(append_have_file_definition filename varname list)
  endif()
  list(APPEND ${list} "${varname}=${${varname}}")
 endmacro()
+
+macro(list_union output input1 input2)
+  set(${output})
+  foreach(it ${${input1}})
+    list(FIND ${input2} ${it} index)
+    if( NOT (index EQUAL -1))
+      list(APPEND ${output} ${it})
+    endif()
+  endforeach()
+endmacro()
--- a/compiler-rt/cmake/config-ix.cmake
+++ b/compiler-rt/cmake/config-ix.cmake
@ -173,7 +173,7 @@ if(ANDROID)
  # Examine compiler output instead.
  detect_target_arch()
  set(COMPILER_RT_OS_SUFFIX "-android")
-else()
+elseif(NOT APPLE) # Supported archs for Apple platforms are generated later
  if("${LLVM_NATIVE_ARCH}" STREQUAL "X86")
    if(NOT MSVC)
      test_target_arch(x86_64 "" "-m64")
@ -220,8 +220,6 @@ else()
  set(COMPILER_RT_OS_SUFFIX "")
 endif()

-message(STATUS "Compiler-RT supported architectures: ${COMPILER_RT_SUPPORTED_ARCH}")
-
 # Takes ${ARGN} and puts only supported architectures in @out_var list.
 function(filter_available_targets out_var)
  set(archs ${${out_var}})
@ -244,26 +242,190 @@ function(get_target_flags_for_arch arch out_var)
  endif()
 endfunction()

-# Architectures supported by compiler-rt libraries.
-filter_available_targets(SANITIZER_COMMON_SUPPORTED_ARCH
-  x86_64 i386 i686 powerpc64 powerpc64le arm aarch64 mips mips64 mipsel mips64el)
-# LSan and UBSan common files should be available on all architectures supported
-# by other sanitizers (even if they build into dummy object files).
-filter_available_targets(LSAN_COMMON_SUPPORTED_ARCH
-  ${SANITIZER_COMMON_SUPPORTED_ARCH})
-filter_available_targets(UBSAN_COMMON_SUPPORTED_ARCH
-  ${SANITIZER_COMMON_SUPPORTED_ARCH})
-filter_available_targets(ASAN_SUPPORTED_ARCH
-  x86_64 i386 i686 powerpc64 powerpc64le arm mips mipsel mips64 mips64el aarch64)
-filter_available_targets(DFSAN_SUPPORTED_ARCH x86_64 mips64 mips64el aarch64)
-filter_available_targets(LSAN_SUPPORTED_ARCH x86_64 mips64 mips64el)
-filter_available_targets(MSAN_SUPPORTED_ARCH x86_64 mips64 mips64el)
-filter_available_targets(PROFILE_SUPPORTED_ARCH x86_64 i386 i686 arm mips mips64
-  mipsel mips64el aarch64 powerpc64 powerpc64le)
-filter_available_targets(TSAN_SUPPORTED_ARCH x86_64 mips64 mips64el)
-filter_available_targets(UBSAN_SUPPORTED_ARCH x86_64 i386 i686 arm aarch64 mips
-  mipsel mips64 mips64el powerpc64 powerpc64le)
-filter_available_targets(SAFESTACK_SUPPORTED_ARCH x86_64 i386 i686)
+set(ARM64 aarch64)
+set(ARM32 arm)
+set(X86_64 x86_64)
+if(APPLE)
+  set(ARM64 arm64)
+  set(ARM32 armv7 armv7s)
+  set(X86_64 x86_64 x86_64h)
+endif()
+
+set(ALL_SANITIZER_COMMON_SUPPORTED_ARCH ${X86_64} i386 i686 powerpc64
+  powerpc64le ${ARM32} ${ARM64} mips mips64 mipsel mips64el)
+set(ALL_ASAN_SUPPORTED_ARCH ${X86_64} i386 i686 powerpc64 powerpc64le ${ARM32}
+  ${ARM64} mips mipsel mips64 mips64el)
+set(ALL_DFSAN_SUPPORTED_ARCH ${X86_64} mips64 mips64el ${ARM64})
+set(ALL_LSAN_SUPPORTED_ARCH ${X86_64} mips64 mips64el)
+set(ALL_MSAN_SUPPORTED_ARCH ${X86_64} mips64 mips64el)
+set(ALL_PROFILE_SUPPORTED_ARCH ${X86_64} i386 i686 ${ARM32} mips mips64
+    mipsel mips64el ${ARM64} powerpc64 powerpc64le)
+set(ALL_TSAN_SUPPORTED_ARCH ${X86_64} mips64 mips64el)
+set(ALL_UBSAN_SUPPORTED_ARCH ${X86_64} i386 i686 ${ARM32} ${ARM64} mips
+    mipsel mips64 mips64el powerpc64 powerpc64le)
+set(ALL_SAFESTACK_SUPPORTED_ARCH ${X86_64} i386 i686)
+
+if(APPLE)
+  include(CompilerRTDarwinUtils)
+
+  option(COMPILER_RT_ENABLE_IOS "Enable building for iOS - Experimental" Off)
+
+  find_darwin_sdk_dir(OSX_SDK_DIR macosx)
+  find_darwin_sdk_dir(IOSSIM_SDK_DIR iphonesimulator)
+  find_darwin_sdk_dir(IOS_SDK_DIR iphoneos)
+
+  # Note: In order to target x86_64h on OS X the minimum deployment target must
+  # be 10.8 or higher.
+  set(SANITIZER_COMMON_SUPPORTED_OS osx)
+  if(NOT SANITIZER_MIN_OSX_VERSION)
+    string(REGEX MATCH "-mmacosx-version-min=([.0-9]+)"
+           MACOSX_VERSION_MIN_FLAG "${CMAKE_CXX_FLAGS}")
+    if(MACOSX_VERSION_MIN_FLAG)
+      set(SANITIZER_MIN_OSX_VERSION "${CMAKE_MATCH_1}")
+    elseif(CMAKE_OSX_DEPLOYMENT_TARGET)
+      set(SANITIZER_MIN_OSX_VERSION ${CMAKE_OSX_DEPLOYMENT_TARGET})
+    else()
+      set(SANITIZER_MIN_OSX_VERSION 10.9)
+    endif()
+    if(SANITIZER_MIN_OSX_VERSION VERSION_LESS "10.7")
+      message(FATAL_ERROR "Too old OS X version: ${SANITIZER_MIN_OSX_VERSION}")
+    endif()
+  endif()
+
+  # We're setting the flag manually for each target OS
+  set(CMAKE_OSX_DEPLOYMENT_TARGET "")
+  
+  set(DARWIN_COMMON_CFLAGS -stdlib=libc++)
+  set(DARWIN_COMMON_LINKFLAGS
+    -stdlib=libc++
+    -lc++
+    -lc++abi)
+  
+  set(DARWIN_osx_CFLAGS
+    ${DARWIN_COMMON_CFLAGS}
+    -mmacosx-version-min=${SANITIZER_MIN_OSX_VERSION})
+  set(DARWIN_osx_LINKFLAGS
+    ${DARWIN_COMMON_LINKFLAGS}
+    -mmacosx-version-min=${SANITIZER_MIN_OSX_VERSION})
+
+  if(OSX_SDK_DIR)
+    list(APPEND DARWIN_osx_CFLAGS -isysroot ${OSX_SDK_DIR})
+    list(APPEND DARWIN_osx_LINKFLAGS -isysroot ${OSX_SDK_DIR})
+  endif()
+
+  # Figure out which arches to use for each OS
+  darwin_get_toolchain_supported_archs(toolchain_arches)
+  message(STATUS "Toolchain supported arches: ${toolchain_arches}")
+  
+  if(NOT MACOSX_VERSION_MIN_FLAG)
+    darwin_test_archs(osx
+      DARWIN_osx_ARCHS
+      ${toolchain_arches})
+    message(STATUS "OSX supported arches: ${DARWIN_osx_ARCHS}")
+    foreach(arch ${DARWIN_osx_ARCHS})
+      list(APPEND COMPILER_RT_SUPPORTED_ARCH ${arch})
+      set(CAN_TARGET_${arch} 1)
+    endforeach()
+
+    if(IOSSIM_SDK_DIR)
+      set(DARWIN_iossim_CFLAGS
+        ${DARWIN_COMMON_CFLAGS}
+        -mios-simulator-version-min=7.0
+        -isysroot ${IOSSIM_SDK_DIR})
+      set(DARWIN_iossim_LINKFLAGS
+        ${DARWIN_COMMON_LINKFLAGS}
+        -mios-simulator-version-min=7.0
+        -isysroot ${IOSSIM_SDK_DIR})
+
+      list(APPEND SANITIZER_COMMON_SUPPORTED_OS iossim)
+      darwin_test_archs(iossim
+        DARWIN_iossim_ARCHS
+        ${toolchain_arches})
+      message(STATUS "iOS Simulator supported arches: ${DARWIN_iossim_ARCHS}")
+      foreach(arch ${DARWIN_iossim_ARCHS})
+        list(APPEND COMPILER_RT_SUPPORTED_ARCH ${arch})
+        set(CAN_TARGET_${arch} 1)
+      endforeach()
+    endif()
+
+    if(IOS_SDK_DIR AND COMPILER_RT_ENABLE_IOS)
+      set(DARWIN_ios_CFLAGS
+        ${DARWIN_COMMON_CFLAGS}
+        -miphoneos-version-min=7.0
+        -isysroot ${IOS_SDK_DIR})
+      set(DARWIN_ios_LINKFLAGS
+        ${DARWIN_COMMON_LINKFLAGS}
+        -miphoneos-version-min=7.0
+        -isysroot ${IOS_SDK_DIR})
+
+      list(APPEND SANITIZER_COMMON_SUPPORTED_OS ios)
+      darwin_test_archs(ios
+        DARWIN_ios_ARCHS
+        ${toolchain_arches})
+      message(STATUS "iOS supported arches: ${DARWIN_ios_ARCHS}")
+      foreach(arch ${DARWIN_ios_ARCHS})
+        list(APPEND COMPILER_RT_SUPPORTED_ARCH ${arch})
+        set(CAN_TARGET_${arch} 1)
+      endforeach()
+    endif()
+  endif()
+
+  # for list_union
+  include(CompilerRTUtils)
+
+  list_union(SANITIZER_COMMON_SUPPORTED_ARCH
+    ALL_SANITIZER_COMMON_SUPPORTED_ARCH
+    COMPILER_RT_SUPPORTED_ARCH
+    )
+  set(LSAN_COMMON_SUPPORTED_ARCH ${SANITIZER_COMMON_SUPPORTED_ARCH})
+  set(UBSAN_COMMON_SUPPORTED_ARCH ${SANITIZER_COMMON_SUPPORTED_ARCH})
+  list_union(ASAN_SUPPORTED_ARCH
+    ALL_ASAN_SUPPORTED_ARCH
+    SANITIZER_COMMON_SUPPORTED_ARCH)
+  list_union(DFSAN_SUPPORTED_ARCH
+    ALL_DFSAN_SUPPORTED_ARCH
+    SANITIZER_COMMON_SUPPORTED_ARCH)
+  list_union(LSAN_SUPPORTED_ARCH
+    ALL_LSAN_SUPPORTED_ARCH
+    SANITIZER_COMMON_SUPPORTED_ARCH)
+  list_union(MSAN_SUPPORTED_ARCH
+    ALL_MSAN_SUPPORTED_ARCH
+    SANITIZER_COMMON_SUPPORTED_ARCH)
+  # Note: profiles is only built for OS X
+  list_union(PROFILE_SUPPORTED_ARCH
+    ALL_PROFILE_SUPPORTED_ARCH
+    DARWIN_osx_ARCHS)
+  list_union(TSAN_SUPPORTED_ARCH
+    ALL_TSAN_SUPPORTED_ARCH
+    SANITIZER_COMMON_SUPPORTED_ARCH)
+  list_union(UBSAN_SUPPORTED_ARCH
+    ALL_UBSAN_SUPPORTED_ARCH
+    SANITIZER_COMMON_SUPPORTED_ARCH)
+  list_union(SAFESTACK_SUPPORTED_ARCH
+    ALL_SAFESTACK_SUPPORTED_ARCH
+    SANITIZER_COMMON_SUPPORTED_ARCH)
+else()
+  # Architectures supported by compiler-rt libraries.
+  filter_available_targets(SANITIZER_COMMON_SUPPORTED_ARCH
+    ${ALL_SANITIZER_COMMON_SUPPORTED_ARCH})
+  # LSan and UBSan common files should be available on all architectures
+  # supported by other sanitizers (even if they build into dummy object files).
+  filter_available_targets(LSAN_COMMON_SUPPORTED_ARCH
+    ${SANITIZER_COMMON_SUPPORTED_ARCH})
+  filter_available_targets(UBSAN_COMMON_SUPPORTED_ARCH
+    ${SANITIZER_COMMON_SUPPORTED_ARCH})
+  filter_available_targets(ASAN_SUPPORTED_ARCH ${ALL_ASAN_SUPPORTED_ARCH})
+  filter_available_targets(DFSAN_SUPPORTED_ARCH ${ALL_DFSAN_SUPPORTED_ARCH})
+  filter_available_targets(LSAN_SUPPORTED_ARCH ${ALL_LSAN_SUPPORTED_ARCH})
+  filter_available_targets(MSAN_SUPPORTED_ARCH ${ALL_MSAN_SUPPORTED_ARCH})
+  filter_available_targets(PROFILE_SUPPORTED_ARCH ${ALL_PROFILE_SUPPORTED_ARCH})
+  filter_available_targets(TSAN_SUPPORTED_ARCH ${ALL_TSAN_SUPPORTED_ARCH})
+  filter_available_targets(UBSAN_SUPPORTED_ARCH ${ALL_UBSAN_SUPPORTED_ARCH})
+  filter_available_targets(SAFESTACK_SUPPORTED_ARCH
+    ${ALL_SAFESTACK_SUPPORTED_ARCH})
+endif()
+
+message(STATUS "Compiler-RT supported architectures: ${COMPILER_RT_SUPPORTED_ARCH}")

 if(ANDROID)
  set(OS_NAME "Android")