libdispatch-913.1.6.tar.gz

[apple/libdispatch.git] / cmake / modules / SwiftSupport.cmake

diff --git a/cmake/modules/SwiftSupport.cmake b/cmake/modules/SwiftSupport.cmake
new file mode 100644 (file)
index 0000000..1965939
--- /dev/null
+++ b/cmake/modules/SwiftSupport.cmake
@@ -0,0 +1,69 @@
+
+include(CMakeParseArguments)
+
+function(add_swift_library library)
+  set(options)
+  set(single_value_options MODULE_NAME;MODULE_LINK_NAME;MODULE_PATH;MODULE_CACHE_PATH;OUTPUT)
+  set(multiple_value_options SOURCES;SWIFT_FLAGS;CFLAGS)
+
+  cmake_parse_arguments(ASL "${options}" "${single_value_options}" "${multiple_value_options}" ${ARGN})
+
+  set(flags ${CMAKE_SWIFT_FLAGS})
+
+  list(APPEND flags -emit-library)
+
+  if(ASL_MODULE_NAME)
+    list(APPEND flags -module-name;${ASL_MODULE_NAME})
+  endif()
+  if(ASL_MODULE_LINK_NAME)
+    list(APPEND flags -module-link-name;${ASL_MODULE_LINK_NAME})
+  endif()
+  if(ASL_MODULE_PATH)
+    list(APPEND flags -emit-module-path;${ASL_MODULE_PATH})
+  endif()
+  if(ASL_MODULE_CACHE_PATH)
+    list(APPEND flags -module-cache-path;${ASL_MODULE_CACHE_PATH})
+  endif()
+  if(ASL_SWIFT_FLAGS)
+    foreach(flag ${ASL_SWIFT_FLAGS})
+      list(APPEND flags ${flag})
+    endforeach()
+  endif()
+  if(ASL_CFLAGS)
+    foreach(flag ${ASL_CFLAGS})
+      list(APPEND flags -Xcc;${flag})
+    endforeach()
+  endif()
+
+  # FIXME: We shouldn't /have/ to build things in a single process.
+  # <rdar://problem/15972329>
+  list(APPEND flags -force-single-frontend-invocation)
+
+  set(sources)
+  foreach(source ${ASL_SOURCES})
+    get_filename_component(location ${source} PATH)
+    if(IS_ABSOLUTE ${location})
+      list(APPEND sources ${source})
+    else()
+      list(APPEND sources ${CMAKE_CURRENT_SOURCE_DIR}/${source})
+    endif()
+  endforeach()
+
+  get_filename_component(module_directory ${ASL_MODULE_PATH} DIRECTORY)
+
+  add_custom_command(OUTPUT
+                       ${ASL_OUTPUT}
+                       ${ASL_MODULE_PATH}
+                       ${module_directory}/${ASL_MODULE_NAME}.swiftdoc
+                     DEPENDS
+                       ${ASL_SOURCES}
+                     COMMAND
+                       ${CMAKE_COMMAND} -E make_directory ${module_directory}
+                     COMMAND
+                       ${CMAKE_SWIFT_COMPILER} ${flags} -c ${sources} -o ${ASL_OUTPUT})
+  add_custom_target(${library}
+                    DEPENDS
+                       ${ASL_OUTPUT}
+                       ${ASL_MODULE_PATH}
+                       ${module_directory}/${ASL_MODULE_NAME}.swiftdoc)
+endfunction()