Merge topic 'ninja-swift'

a9180ccf9a Tests: add a check for the Swift compiler
d745551fb6 Help: add some initial documentation for Swift support
9a182c9e5b Auxiliary: update vim syntax highlighting
e9b0063e8e Modules: add build rules for Swift Ninja support
b6412e3e38 Ninja: add placeholders to support Swift build
7d7f31161d Ninja: add support for Swift's output-file-map.json
d688c4c19d Swift: remove unnecessary unreleased Ninja infrastructure
0723582208 Swift: Detect compiler version
...

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !3297

5 files changed, 130 insertions, 31 deletions

diff --git a/Modules/CMakeDetermineCompilerId.cmake b/Modules/CMakeDetermineCompilerId.cmake
index 1cd919a..7036b93 100644
--- a/Modules/CMakeDetermineCompilerId.cmake
+++ b/Modules/CMakeDetermineCompilerId.cmake
@@ -46,6 +46,14 @@ function(CMAKE_DETERMINE_COMPILER_ID lang flagvar src)
     endif()
   endforeach()
 
+  # Check if compiler id detection gave us the compiler tool.
+  if(CMAKE_${lang}_COMPILER_ID_TOOL)
+    set(CMAKE_${lang}_COMPILER "${CMAKE_${lang}_COMPILER_ID_TOOL}")
+    set(CMAKE_${lang}_COMPILER "${CMAKE_${lang}_COMPILER_ID_TOOL}" PARENT_SCOPE)
+  elseif(NOT CMAKE_${lang}_COMPILER)
+    set(CMAKE_${lang}_COMPILER "CMAKE_${lang}_COMPILER-NOTFOUND" PARENT_SCOPE)
+  endif()
+
   # If the compiler is still unknown, try to query its vendor.
   if(CMAKE_${lang}_COMPILER AND NOT CMAKE_${lang}_COMPILER_ID)
     foreach(userflags "${CMAKE_${lang}_COMPILER_ID_FLAGS_LIST}" "")
@@ -76,6 +84,30 @@ function(CMAKE_DETERMINE_COMPILER_ID lang flagvar src)
     endif()
   endif()
 
+  # For Swift we need to explicitly query the version.
+  if(lang STREQUAL "Swift"
+     AND CMAKE_${lang}_COMPILER
+     AND NOT CMAKE_${lang}_COMPILER_VERSION)
+    execute_process(
+      COMMAND "${CMAKE_${lang}_COMPILER}"
+      -version
+      OUTPUT_VARIABLE output ERROR_VARIABLE output
+      RESULT_VARIABLE result
+      TIMEOUT 10
+    )
+    file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
+      "Running the ${lang} compiler: \"${CMAKE_${lang}_COMPILER}\" -version\n"
+      "${output}\n"
+      )
+
+    if(output MATCHES [[Swift version ([0-9]+\.[0-9]+(\.[0-9]+)?)]])
+      set(CMAKE_${lang}_COMPILER_VERSION "${CMAKE_MATCH_1}")
+      if(NOT CMAKE_${lang}_COMPILER_ID)
+        set(CMAKE_Swift_COMPILER_ID "Apple")
+      endif()
+    endif()
+  endif()
+
   if (COMPILER_QNXNTO AND CMAKE_${lang}_COMPILER_ID STREQUAL "GNU")
     execute_process(
       COMMAND "${CMAKE_${lang}_COMPILER}"
@@ -124,13 +156,6 @@ function(CMAKE_DETERMINE_COMPILER_ID lang flagvar src)
     message(STATUS "The ${lang} compiler identification is unknown")
   endif()
 
-  # Check if compiler id detection gave us the compiler tool.
-  if(CMAKE_${lang}_COMPILER_ID_TOOL)
-    set(CMAKE_${lang}_COMPILER "${CMAKE_${lang}_COMPILER_ID_TOOL}" PARENT_SCOPE)
-  elseif(NOT CMAKE_${lang}_COMPILER)
-    set(CMAKE_${lang}_COMPILER "CMAKE_${lang}_COMPILER-NOTFOUND" PARENT_SCOPE)
-  endif()
-
   set(CMAKE_${lang}_COMPILER_ID "${CMAKE_${lang}_COMPILER_ID}" PARENT_SCOPE)
   set(CMAKE_${lang}_PLATFORM_ID "${CMAKE_${lang}_PLATFORM_ID}" PARENT_SCOPE)
   set(CMAKE_${lang}_COMPILER_ARCHITECTURE_ID "${CMAKE_${lang}_COMPILER_ARCHITECTURE_ID}" PARENT_SCOPE)
diff --git a/Modules/CMakeDetermineSwiftCompiler.cmake b/Modules/CMakeDetermineSwiftCompiler.cmake
index dd02d54..2fcf7b0 100644
--- a/Modules/CMakeDetermineSwiftCompiler.cmake
+++ b/Modules/CMakeDetermineSwiftCompiler.cmake
@@ -1,15 +1,46 @@
 # Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
 # file Copyright.txt or https://cmake.org/licensing for details.
 
-
 include(${CMAKE_ROOT}/Modules/CMakeDetermineCompiler.cmake)
 
+# Local system-specific compiler preferences for this language.
+include(Platform/${CMAKE_SYSTEM_NAME}-Determine-Swift OPTIONAL)
+include(Platform/${CMAKE_SYSTEM_NAME}-Swift OPTIONAL)
+if(NOT CMAKE_Swift_COMPILER_NAMES)
+  set(CMAKE_Swift_COMPILER_NAMES swiftc)
+endif()
+
 if("${CMAKE_GENERATOR}" STREQUAL "Xcode")
   if(XCODE_VERSION VERSION_LESS 6.1)
     message(FATAL_ERROR "Swift language not supported by Xcode ${XCODE_VERSION}")
   endif()
   set(CMAKE_Swift_COMPILER_XCODE_TYPE sourcecode.swift)
   _cmake_find_compiler_path(Swift)
+elseif("${CMAKE_GENERATOR}" STREQUAL "Ninja")
+  if(CMAKE_Swift_COMPILER)
+    _cmake_find_compiler_path(Swift)
+  else()
+    set(CMAKE_Swift_COMPILER_INIT NOTFOUND)
+
+    if(NOT $ENV{SWIFTC} STREQUAL "")
+      get_filename_component(CMAKE_Swift_COMPILER_INIT $ENV{SWIFTC} PROGRAM
+        PROGRAM_ARGS CMAKE_Swift_FLAGS_ENV_INIT)
+      if(CMAKE_Swift_FLAGS_ENV_INIT)
+        set(CMAKE_Swift_COMPILER_ARG1 "${CMAKE_Swift_FLAGS_ENV_INIT}" CACHE
+          STRING "First argument to the Swift compiler")
+      endif()
+      if(NOT EXISTS ${CMAKE_Swift_COMPILER_INIT})
+        message(FATAL_ERROR "Could not find compiler set in environment variable SWIFTC\n$ENV{SWIFTC}.\n${CMAKE_Swift_COMPILER_INIT}")
+      endif()
+    endif()
+
+    if(NOT CMAKE_Swift_COMPILER_INIT)
+      set(CMAKE_Swift_COMPILER_LIST swiftc ${_CMAKE_TOOLCHAIN_PREFIX}swiftc)
+    endif()
+
+    _cmake_find_compiler(Swift)
+  endif()
+  mark_as_advanced(CMAKE_Swift_COMPILER)
 else()
   message(FATAL_ERROR "Swift language not supported by \"${CMAKE_GENERATOR}\" generator")
 endif()
@@ -18,11 +49,13 @@ endif()
 if(NOT CMAKE_Swift_COMPILER_ID_RUN)
   set(CMAKE_Swift_COMPILER_ID_RUN 1)
 
-  list(APPEND CMAKE_Swift_COMPILER_ID_MATCH_VENDORS Apple)
-  set(CMAKE_Swift_COMPILER_ID_MATCH_VENDOR_REGEX_Apple "com.apple.xcode.tools.swift.compiler")
+  if("${CMAKE_GENERATOR}" STREQUAL "Xcode")
+    list(APPEND CMAKE_Swift_COMPILER_ID_MATCH_VENDORS Apple)
+    set(CMAKE_Swift_COMPILER_ID_MATCH_VENDOR_REGEX_Apple "com.apple.xcode.tools.swift.compiler")
 
-  set(CMAKE_Swift_COMPILER_ID_TOOL_MATCH_REGEX "\nCompileSwiftSources[^\n]*(\n[ \t]+[^\n]*)*\n[ \t]+([^ \t\r\n]+)[^\r\n]* -c[^\r\n]*CompilerIdSwift/CompilerId/main.swift")
-  set(CMAKE_Swift_COMPILER_ID_TOOL_MATCH_INDEX 2)
+    set(CMAKE_Swift_COMPILER_ID_TOOL_MATCH_REGEX "\nCompileSwiftSources[^\n]*(\n[ \t]+[^\n]*)*\n[ \t]+([^ \t\r\n]+)[^\r\n]* -c[^\r\n]*CompilerIdSwift/CompilerId/main.swift")
+    set(CMAKE_Swift_COMPILER_ID_TOOL_MATCH_INDEX 2)
+  endif()
 
   # Try to identify the compiler.
   set(CMAKE_Swift_COMPILER_ID)
@@ -40,6 +73,6 @@ unset(_CMAKE_PROCESSING_LANGUAGE)
 
 # configure variables set in this file for fast reload later on
 configure_file(${CMAKE_ROOT}/Modules/CMakeSwiftCompiler.cmake.in
-  ${CMAKE_PLATFORM_INFO_DIR}/CMakeSwiftCompiler.cmake
-  @ONLY
-  )
+               ${CMAKE_PLATFORM_INFO_DIR}/CMakeSwiftCompiler.cmake @ONLY)
+
+set(CMAKE_Swift_COMPILER_ENV_VAR "SWIFTC")
diff --git a/Modules/CMakeSwiftCompiler.cmake.in b/Modules/CMakeSwiftCompiler.cmake.in
index 45f0a31..7c8d1c1 100644
--- a/Modules/CMakeSwiftCompiler.cmake.in
+++ b/Modules/CMakeSwiftCompiler.cmake.in
@@ -1,5 +1,14 @@
+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
 set(CMAKE_Swift_COMPILER "@CMAKE_Swift_COMPILER@")
 set(CMAKE_Swift_COMPILER_ID "@CMAKE_Swift_COMPILER_ID@")
+set(CMAKE_Swift_COMPILER_VERSION "@CMAKE_Swift_COMPILER_VERSION@")
+
+set(CMAKE_Swift_COMPILER_LOADED 1)
+set(CMAKE_Swift_COMPILER_WORKS "@CMAKE_Swift_COMPILER_WORKS@")
+
+set(CMAKE_Swift_COMPILER_ENV_VAR "SWIFTC")
 
 set(CMAKE_Swift_COMPILER_ID_RUN 1)
 set(CMAKE_Swift_SOURCE_FILE_EXTENSIONS swift)
diff --git a/Modules/CMakeSwiftInformation.cmake b/Modules/CMakeSwiftInformation.cmake
index 07ba6d0..64e7f99 100644
--- a/Modules/CMakeSwiftInformation.cmake
+++ b/Modules/CMakeSwiftInformation.cmake
@@ -1,32 +1,61 @@
 # Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
 # file Copyright.txt or https://cmake.org/licensing for details.
 
-
-set(CMAKE_Swift_OUTPUT_EXTENSION .o)
-set(CMAKE_INCLUDE_FLAG_Swift "-I")
+if(UNIX)
+  set(CMAKE_Swift_OUTPUT_EXTENSION .o)
+else()
+  set(CMAKE_Swift_OUTPUT_EXTENSION .obj)
+endif()
 
 # Load compiler-specific information.
 if(CMAKE_Swift_COMPILER_ID)
   include(Compiler/${CMAKE_Swift_COMPILER_ID}-Swift OPTIONAL)
-endif()
 
-# load the system- and compiler specific files
-if(CMAKE_Swift_COMPILER_ID)
-  # load a hardware specific file, mostly useful for embedded compilers
   if(CMAKE_SYSTEM_PROCESSOR)
     include(Platform/${CMAKE_EFFECTIVE_SYSTEM_NAME}-${CMAKE_Swift_COMPILER_ID}-Swift-${CMAKE_SYSTEM_PROCESSOR} OPTIONAL)
   endif()
   include(Platform/${CMAKE_EFFECTIVE_SYSTEM_NAME}-${CMAKE_Swift_COMPILER_ID}-Swift OPTIONAL)
 endif()
 
-# for most systems a module is the same as a shared library
-# so unless the variable CMAKE_MODULE_EXISTS is set just
-# copy the values from the LIBRARY variables
-if(NOT CMAKE_MODULE_EXISTS)
-  set(CMAKE_SHARED_MODULE_Swift_FLAGS ${CMAKE_SHARED_LIBRARY_Swift_FLAGS})
-  set(CMAKE_SHARED_MODULE_CREATE_Swift_FLAGS ${CMAKE_SHARED_LIBRARY_CREATE_Swift_FLAGS})
+set(CMAKE_INCLUDE_FLAG_Swift "-I")
+set(CMAKE_INCLUDE_FLAG_SEP_Swift " ")
+set(CMAKE_Swift_DEFINE_FLAG -D)
+set(CMAKE_Swift_COMPILE_OPTIONS_TARGET "-target ")
+set(CMAKE_Swift_COMPILER_ARG1 -frontend)
+
+set(CMAKE_Swift_FLAGS_DEBUG_INIT "-g")
+set(CMAKE_Swift_FLAGS_RELEASE_INIT "-O")
+set(CMAKE_Swift_FLAGS_RELWITHDEBINFO_INIT "-O -g")
+set(CMAKE_Swift_FLAGS_MINSIZEREL_INIT "-Osize")
+
+# NOTE(compnerd) we do not have an object compile rule since we build the objects as part of the link step
+if(NOT CMAKE_Swift_COMPILE_OBJECT)
+  set(CMAKE_Swift_COMPILE_OBJECT ":")
 endif()
 
-include(CMakeCommonLanguageInclude)
+if(NOT CMAKE_Swift_CREATE_SHARED_LIBRARY)
+  if(CMAKE_Swift_COMPILER_TARGET)
+    set(CMAKE_Swift_CREATE_SHARED_LIBRARY "${CMAKE_Swift_COMPILER} -target <CMAKE_Swift_COMPILER_TARGET> -output-file-map <SWIFT_OUTPUT_FILE_MAP> -incremental -emit-library -o <TARGET> -module-name <SWIFT_MODULE_NAME> -module-link-name <SWIFT_LIBRARY_NAME> -emit-module -emit-module-path <SWIFT_MODULE> -emit-dependencies <FLAGS> <SWIFT_SOURCES> <LINK_FLAGS> <LINK_LIBRARIES>")
+  else()
+    set(CMAKE_Swift_CREATE_SHARED_LIBRARY "${CMAKE_Swift_COMPILER} -output-file-map <SWIFT_OUTPUT_FILE_MAP> -incremental -emit-library -o <TARGET> -module-name <SWIFT_MODULE_NAME> -module-link-name <SWIFT_LIBRARY_NAME> -emit-module -emit-module-path <SWIFT_MODULE> -emit-dependencies <FLAGS> <SWIFT_SOURCES> <LINK_FLAGS> <LINK_LIBRARIES>")
+  endif()
+endif()
+
+if(NOT CMAKE_Swift_CREATE_SHARED_MODULE)
+  set(CMAKE_Swift_CREATE_SHARED_MODULE ${CMAKE_Swift_CREATE_SHARED_LIBRARY})
+endif()
+
+if(NOT CMAKE_Swift_LINK_EXECUTABLE)
+  if(CMAKE_Swift_COMPILER_TARGET)
+    set(CMAKE_Swift_LINK_EXECUTABLE "${CMAKE_Swift_COMPILER} -target <CMAKE_Swift_COMPILER_TARGET> -output-file-map <SWIFT_OUTPUT_FILE_MAP> -incremental -emit-executable -o <TARGET> -emit-module -emit-module-path <SWIFT_MODULE> -emit-dependencies <FLAGS> <SWIFT_SOURCES> <LINK_FLAGS> <LINK_LIBRARIES>")
+  else()
+    set(CMAKE_Swift_LINK_EXECUTABLE "${CMAKE_Swift_COMPILER} -output-file-map <SWIFT_OUTPUT_FILE_MAP> -incremental -emit-executable -o <TARGET> -emit-module -emit-module-path <SWIFT_MODULE> -emit-dependencies <FLAGS> <SWIFT_SOURCES> <LINK_FLAGS> <LINK_LIBRARIES>")
+  endif()
+endif()
+
+if(NOT CMAKE_Swift_CREATE_STATIC_LIBRARY)
+  set(CMAKE_Swift_ARCHIVE_CREATE "<CMAKE_AR> crs <TARGET> <OBJECTS>")
+  set(CMAKE_Swift_ARCHIVE_FINISH "")
+endif()
 
 set(CMAKE_Swift_INFORMATION_LOADED 1)
diff --git a/Modules/CMakeTestSwiftCompiler.cmake b/Modules/CMakeTestSwiftCompiler.cmake
index 858c1be..841aee6 100644
--- a/Modules/CMakeTestSwiftCompiler.cmake
+++ b/Modules/CMakeTestSwiftCompiler.cmake
@@ -1,7 +1,6 @@
 # Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
 # file Copyright.txt or https://cmake.org/licensing for details.
 
-
 if(CMAKE_Swift_COMPILER_FORCED)
   # The compiler configuration was forced by the user.
   # Assume the user has configured all compiler information.
@@ -23,7 +22,6 @@ unset(CMAKE_Swift_COMPILER_WORKS CACHE)
 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
@@ -51,6 +49,11 @@ else()
       "Determining if the Swift compiler works passed with "
       "the following output:\n${__CMAKE_Swift_COMPILER_OUTPUT}\n\n")
   endif()
+
+  # Re-configure to save learned information.
+  configure_file(${CMAKE_ROOT}/Modules/CMakeSwiftCompiler.cmake.in
+                 ${CMAKE_PLATFORM_INFO_DIR}/CMakeSwiftCompiler.cmake @ONLY)
+  include(${CMAKE_PLATFORM_INFO_DIR}/CMakeSwiftCompiler.cmake)
 endif()
 
 unset(__CMAKE_Swift_COMPILER_OUTPUT)