| |
| #============================================================================= |
| # Copyright 2003-2015 Kitware, Inc. |
| # |
| # Distributed under the OSI-approved BSD License (the "License"); |
| # see accompanying file Copyright.txt for details. |
| # |
| # This software is distributed WITHOUT ANY WARRANTY; without even the |
| # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| # See the License for more information. |
| #============================================================================= |
| # (To distribute this file outside of CMake, substitute the full |
| # License text for the above reference.) |
| |
| if(CMAKE_Swift_COMPILER_FORCED) |
| # The compiler configuration was forced by the user. |
| # Assume the user has configured all compiler information. |
| set(CMAKE_Swift_COMPILER_WORKS TRUE) |
| return() |
| endif() |
| |
| include(CMakeTestCompilerCommon) |
| |
| # Remove any cached result from an older CMake version. |
| # We now store this in CMakeSwiftCompiler.cmake. |
| unset(CMAKE_Swift_COMPILER_WORKS CACHE) |
| |
| # This file is used by EnableLanguage in cmGlobalGenerator to |
| # determine that that selected C++ compiler can actually compile |
| # and link the most basic of programs. If not, a fatal error |
| # is set and cmake stops processing commands and will not generate |
| # any makefiles or projects. |
| if(NOT CMAKE_Swift_COMPILER_WORKS) |
| PrintTestCompilerStatus("Swift" "") |
| file(WRITE ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/main.swift |
| "import Foundation\n" |
| "print(\"CMake\")\n") |
| try_compile(CMAKE_Swift_COMPILER_WORKS ${CMAKE_BINARY_DIR} |
| ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/main.swift |
| OUTPUT_VARIABLE __CMAKE_Swift_COMPILER_OUTPUT) |
| # Move result from cache to normal variable. |
| set(CMAKE_Swift_COMPILER_WORKS ${CMAKE_Swift_COMPILER_WORKS}) |
| unset(CMAKE_Swift_COMPILER_WORKS CACHE) |
| set(Swift_TEST_WAS_RUN 1) |
| endif() |
| |
| if(NOT CMAKE_Swift_COMPILER_WORKS) |
| PrintTestCompilerStatus("Swift" " -- broken") |
| file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log |
| "Determining if the Swift compiler works failed with " |
| "the following output:\n${__CMAKE_Swift_COMPILER_OUTPUT}\n\n") |
| message(FATAL_ERROR "The Swift compiler \"${CMAKE_Swift_COMPILER}\" " |
| "is not able to compile a simple test program.\nIt fails " |
| "with the following output:\n ${__CMAKE_Swift_COMPILER_OUTPUT}\n\n" |
| "CMake will not be able to correctly generate this project.") |
| else() |
| if(Swift_TEST_WAS_RUN) |
| PrintTestCompilerStatus("Swift" " -- works") |
| file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log |
| "Determining if the Swift compiler works passed with " |
| "the following output:\n${__CMAKE_Swift_COMPILER_OUTPUT}\n\n") |
| endif() |
| endif() |
| |
| unset(__CMAKE_Swift_COMPILER_OUTPUT) |