1# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
2# file Copyright.txt or https://cmake.org/licensing for details.
3
4include(${CMAKE_ROOT}/Modules/CMakeDetermineCompiler.cmake)
5
6# Local system-specific compiler preferences for this language.
7include(Platform/${CMAKE_SYSTEM_NAME}-Determine-Swift OPTIONAL)
8include(Platform/${CMAKE_SYSTEM_NAME}-Swift OPTIONAL)
9if(NOT CMAKE_Swift_COMPILER_NAMES)
10  set(CMAKE_Swift_COMPILER_NAMES swiftc)
11endif()
12
13if("${CMAKE_GENERATOR}" STREQUAL "Xcode")
14  if(XCODE_VERSION VERSION_LESS 6.1)
15    message(FATAL_ERROR "Swift language not supported by Xcode ${XCODE_VERSION}")
16  endif()
17  set(CMAKE_Swift_COMPILER_XCODE_TYPE sourcecode.swift)
18  _cmake_find_compiler_path(Swift)
19elseif("${CMAKE_GENERATOR}" MATCHES "^Ninja")
20  if(CMAKE_Swift_COMPILER)
21    _cmake_find_compiler_path(Swift)
22  else()
23    set(CMAKE_Swift_COMPILER_INIT NOTFOUND)
24
25    if(NOT $ENV{SWIFTC} STREQUAL "")
26      get_filename_component(CMAKE_Swift_COMPILER_INIT $ENV{SWIFTC} PROGRAM
27        PROGRAM_ARGS CMAKE_Swift_FLAGS_ENV_INIT)
28      if(CMAKE_Swift_FLAGS_ENV_INIT)
29        set(CMAKE_Swift_COMPILER_ARG1 "${CMAKE_Swift_FLAGS_ENV_INIT}" CACHE
30          STRING "Arguments to the Swift compiler")
31      endif()
32      if(NOT EXISTS ${CMAKE_Swift_COMPILER_INIT})
33        message(FATAL_ERROR "Could not find compiler set in environment variable SWIFTC\n$ENV{SWIFTC}.\n${CMAKE_Swift_COMPILER_INIT}")
34      endif()
35    endif()
36
37    if(NOT CMAKE_Swift_COMPILER_INIT)
38      set(CMAKE_Swift_COMPILER_LIST swiftc ${_CMAKE_TOOLCHAIN_PREFIX}swiftc)
39    endif()
40
41    _cmake_find_compiler(Swift)
42  endif()
43  mark_as_advanced(CMAKE_Swift_COMPILER)
44else()
45  message(FATAL_ERROR "Swift language not supported by \"${CMAKE_GENERATOR}\" generator")
46endif()
47
48# Build a small source file to identify the compiler.
49if(NOT CMAKE_Swift_COMPILER_ID_RUN)
50  set(CMAKE_Swift_COMPILER_ID_RUN 1)
51
52  if("${CMAKE_GENERATOR}" STREQUAL "Xcode")
53    list(APPEND CMAKE_Swift_COMPILER_ID_MATCH_VENDORS Apple)
54    set(CMAKE_Swift_COMPILER_ID_MATCH_VENDOR_REGEX_Apple "com.apple.xcode.tools.swift.compiler")
55
56    set(CMAKE_Swift_COMPILER_ID_TOOL_MATCH_REGEX "\nCompileSwift[^\n]*(\n[ \t]+[^\n]*)*\n[ \t]+([^ \t\r\n]+)[^\r\n]* -c[^\r\n]*CompilerIdSwift/CompilerId/main.swift")
57    set(CMAKE_Swift_COMPILER_ID_TOOL_MATCH_INDEX 2)
58  endif()
59
60  # Try to identify the compiler.
61  set(CMAKE_Swift_COMPILER_ID)
62  include(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerId.cmake)
63  CMAKE_DETERMINE_COMPILER_ID(Swift "" CompilerId/main.swift)
64endif()
65
66if (NOT _CMAKE_TOOLCHAIN_LOCATION)
67  get_filename_component(_CMAKE_TOOLCHAIN_LOCATION "${CMAKE_Swift_COMPILER}" PATH)
68endif ()
69
70set(_CMAKE_PROCESSING_LANGUAGE "Swift")
71include(CMakeFindBinUtils)
72unset(_CMAKE_PROCESSING_LANGUAGE)
73
74# configure variables set in this file for fast reload later on
75configure_file(${CMAKE_ROOT}/Modules/CMakeSwiftCompiler.cmake.in
76               ${CMAKE_PLATFORM_INFO_DIR}/CMakeSwiftCompiler.cmake @ONLY)
77
78set(CMAKE_Swift_COMPILER_ENV_VAR "SWIFTC")
79