Imported Upstream version 5.18.0.161

Former-commit-id: 4db48158d3a35497b8f118ab21b5f08ac3d86d98

external/llvm/cmake/platforms/iOS.cmake

@@ -0,0 +1,55 @@
+# Toolchain config for iOS.
+
+SET(CMAKE_SYSTEM_NAME Darwin)
+SET(CMAKE_SYSTEM_VERSION 13)
+SET(CMAKE_CXX_COMPILER_WORKS True)
+SET(CMAKE_C_COMPILER_WORKS True)
+SET(IOS True)
+
+if(NOT CMAKE_OSX_SYSROOT)
+  execute_process(COMMAND xcodebuild -version -sdk iphoneos Path
+    OUTPUT_VARIABLE SDKROOT
+    ERROR_QUIET
+    OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+  IF(NOT EXISTS ${SDKROOT})
+    MESSAGE(FATAL_ERROR "SDKROOT could not be detected!")
+  ENDIF()
+
+  message(STATUS "Using SDKROOT ${SDKROOT}")
+  set(CMAKE_OSX_SYSROOT ${SDKROOT})
+endif()
+
+IF(NOT CMAKE_C_COMPILER)
+  execute_process(COMMAND xcrun -sdk ${CMAKE_OSX_SYSROOT} -find clang
+   OUTPUT_VARIABLE CMAKE_C_COMPILER
+   ERROR_QUIET
+   OUTPUT_STRIP_TRAILING_WHITESPACE)
+  message(STATUS "Using c compiler ${CMAKE_C_COMPILER}")
+ENDIF()
+
+IF(NOT CMAKE_CXX_COMPILER)
+  execute_process(COMMAND xcrun -sdk ${CMAKE_OSX_SYSROOT} -find clang++
+   OUTPUT_VARIABLE CMAKE_CXX_COMPILER
+   ERROR_QUIET
+   OUTPUT_STRIP_TRAILING_WHITESPACE)
+  message(STATUS "Using c compiler ${CMAKE_CXX_COMPILER}")
+ENDIF()
+
+IF(NOT CMAKE_AR)
+  execute_process(COMMAND xcrun -sdk ${CMAKE_OSX_SYSROOT} -find ar
+   OUTPUT_VARIABLE CMAKE_AR_val
+   ERROR_QUIET
+   OUTPUT_STRIP_TRAILING_WHITESPACE)
+  SET(CMAKE_AR ${CMAKE_AR_val} CACHE FILEPATH "Archiver")
+  message(STATUS "Using ar ${CMAKE_AR}")
+ENDIF()
+
+IF(NOT CMAKE_RANLIB)
+  execute_process(COMMAND xcrun -sdk ${CMAKE_OSX_SYSROOT} -find ranlib
+   OUTPUT_VARIABLE CMAKE_RANLIB_val
+   ERROR_QUIET
+   OUTPUT_STRIP_TRAILING_WHITESPACE)
+  SET(CMAKE_RANLIB ${CMAKE_RANLIB_val} CACHE FILEPATH "Ranlib")
+  message(STATUS "Using ranlib ${CMAKE_RANLIB}")
+ENDIF()