Cleanup addition of swift-syntax

Author: bnbarham

BuildSupport/SwiftSyntax/CMakeLists.txt

@@ -1,14 +1,16 @@
 include(FetchContent)
 
-set(BUILD_SHARED_LIBS OFF)
-
-if(DEFINED SWIFTPM_PATH_TO_SWIFT_SYNTAX_SOURCE)
-  file(TO_CMAKE_PATH "${SWIFTPM_PATH_TO_SWIFT_SYNTAX_SOURCE}" swift_syntax_path)
-  FetchContent_Declare(SwiftSyntax
-    SOURCE_DIR "${swift_syntax_path}")
-else()
-  FetchContent_Declare(SwiftSyntax
-    GIT_REPOSITORY https://github.com/apple/swift-syntax
-    GIT_TAG main)
+find_package(SwiftSyntax CONFIG)
+if(NOT SwiftSyntax_FOUND)
+  set(SWIFT_SYNTAX_INSTALL_TARGETS YES)
+  if(DEFINED SWIFTPM_PATH_TO_SWIFT_SYNTAX_SOURCE)
+    file(TO_CMAKE_PATH "${SWIFTPM_PATH_TO_SWIFT_SYNTAX_SOURCE}" swift_syntax_path)
+    FetchContent_Declare(SwiftSyntax
+      SOURCE_DIR "${swift_syntax_path}")
+  else()
+    FetchContent_Declare(SwiftSyntax
+      GIT_REPOSITORY https://github.com/apple/swift-syntax
+      GIT_TAG main)
+  endif()
+  FetchContent_MakeAvailable(SwiftSyntax)
 endif()
-FetchContent_MakeAvailable(SwiftSyntax)

Sources/PackageModelSyntax/CMakeLists.txt

@@ -24,12 +24,12 @@ target_link_libraries(PackageModelSyntax PUBLIC
   PackageLoading
   PackageModel
 
-  SwiftBasicFormat
-  SwiftDiagnostics
-  SwiftIDEUtils
-  SwiftParser
-  SwiftSyntax
-  SwiftSyntaxBuilder
+  SwiftSyntax::SwiftBasicFormat
+  SwiftSyntax::SwiftDiagnostics
+  SwiftSyntax::SwiftIDEUtils
+  SwiftSyntax::SwiftParser
+  SwiftSyntax::SwiftSyntax
+  SwiftSyntax::SwiftSyntaxBuilder
 )
 
 # NOTE(compnerd) workaround for CMake not setting up include flags yet
@@ -41,17 +41,3 @@ install(TARGETS PackageModelSyntax
   LIBRARY DESTINATION lib
   RUNTIME DESTINATION bin)
 set_property(GLOBAL APPEND PROPERTY SwiftPM_EXPORTS PackageModelSyntax)
-
-set(SWIFT_SYNTAX_MODULES
-  SwiftBasicFormat
-  SwiftParser
-  SwiftParserDiagnostics
-  SwiftDiagnostics
-  SwiftSyntax
-  SwiftSyntaxBuilder
-  SwiftIDEUtils
-)
-export(TARGETS ${SWIFT_SYNTAX_MODULES}
-       NAMESPACE SPMSwiftSyntax::
-       FILE ${CMAKE_BINARY_DIR}/cmake/modules/SwiftSyntaxConfig.cmake
-       EXPORT_LINK_INTERFACE_LIBRARIES)