build: repair the build of ArgumentParser with CMake

The changes in apple#335 introduced a new library but failed to actually
build the library and update the dependency structure.  Update the build
system to build and install the new target.

Sources/ArgumentParser/CMakeLists.txt

@@ -47,7 +47,8 @@ set_target_properties(ArgumentParser PROPERTIES
 target_compile_options(ArgumentParser PRIVATE
   $<$<BOOL:${BUILD_TESTING}>:-enable-testing>)
 target_link_libraries(ArgumentParser PRIVATE
-  $<$<NOT:$<PLATFORM_ID:Darwin>>:Foundation>)
+  $<$<NOT:$<PLATFORM_ID:Darwin>>:Foundation>
+  ArgumentParserToolInfo)
 
 
 _install_target(ArgumentParser)

Sources/ArgumentParserToolInfo/CMakeLists.txt

@@ -0,0 +1,11 @@
+add_library(ArgumentParserToolInfo
+  ToolInfo.swift)
+# NOTE: workaround for CMake not setting up include flags yet
+set_target_properties(ArgumentParserToolInfo PROPERTIES
+  INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+target_compile_options(ArgumentParserToolInfo PRIVATE
+  $<$<BOOL:${BUILD_TESTING}>:-enable-testing>)
+
+
+_install_target(ArgumentParserToolInfo)
+set_property(GLOBAL APPEND PROPERTY ArgumentParser_EXPORTS ArgumentParserToolInfo)

Sources/CMakeLists.txt

@@ -1,4 +1,5 @@
 add_subdirectory(ArgumentParser)
+add_subdirectory(ArgumentParserToolInfo)
 if(BUILD_TESTING)
   add_subdirectory(ArgumentParserTestHelpers)
 endif()