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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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if(CMAKE_Swift_COMPILER_FORCED)
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# The compiler configuration was forced by the user.
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# Assume the user has configured all compiler information.
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set(CMAKE_Swift_COMPILER_WORKS TRUE)
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return()
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endif()
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include(CMakeTestCompilerCommon)
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# Remove any cached result from an older CMake version.
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# We now store this in CMakeSwiftCompiler.cmake.
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unset(CMAKE_Swift_COMPILER_WORKS CACHE)
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# This file is used by EnableLanguage in cmGlobalGenerator to
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# determine that that selected C++ compiler can actually compile
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# and link the most basic of programs. If not, a fatal error
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# is set and cmake stops processing commands and will not generate
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# any makefiles or projects.
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if(NOT CMAKE_Swift_COMPILER_WORKS)
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PrintTestCompilerStatus("Swift" "")
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file(WRITE ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/main.swift
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"import Foundation\n"
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"print(\"CMake\")\n")
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try_compile(CMAKE_Swift_COMPILER_WORKS ${CMAKE_BINARY_DIR}
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${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/main.swift
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OUTPUT_VARIABLE __CMAKE_Swift_COMPILER_OUTPUT)
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# Move result from cache to normal variable.
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set(CMAKE_Swift_COMPILER_WORKS ${CMAKE_Swift_COMPILER_WORKS})
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unset(CMAKE_Swift_COMPILER_WORKS CACHE)
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set(Swift_TEST_WAS_RUN 1)
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endif()
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if(NOT CMAKE_Swift_COMPILER_WORKS)
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PrintTestCompilerStatus("Swift" " -- broken")
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Determining if the Swift compiler works failed with "
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"the following output:\n${__CMAKE_Swift_COMPILER_OUTPUT}\n\n")
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message(FATAL_ERROR "The Swift compiler \"${CMAKE_Swift_COMPILER}\" "
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"is not able to compile a simple test program.\nIt fails "
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"with the following output:\n ${__CMAKE_Swift_COMPILER_OUTPUT}\n\n"
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"CMake will not be able to correctly generate this project.")
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else()
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if(Swift_TEST_WAS_RUN)
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PrintTestCompilerStatus("Swift" " -- works")
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Determining if the Swift compiler works passed with "
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"the following output:\n${__CMAKE_Swift_COMPILER_OUTPUT}\n\n")
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endif()
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endif()
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unset(__CMAKE_Swift_COMPILER_OUTPUT)
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