Merge branch 'SwigFixes' into 'master'

BUG: Swig fixes

See merge request iMSTK/iMSTK!761

CMake/External/CMakeLists.txt

@@ -76,8 +76,12 @@ ExternalProject_Include_Dependencies( ${PROJECT_NAME}
 set(EXTERNAL_PROJECT_OPTIONAL_CMAKE_CACHE_ARGS)
 if(WIN32)
   list(APPEND EXTERNAL_PROJECT_OPTIONAL_CMAKE_CACHE_ARGS
-    -D${PROJECT_NAME}_ENABLE_AUDIO:BOOL=${${PROJECT_NAME}_AUDIO_ENABLED}
-    )
+    -D${PROJECT_NAME}_ENABLE_AUDIO:BOOL=${${PROJECT_NAME}_AUDIO_ENABLED})
+endif()
+if (${PROJECT_NAME}_WRAP_CSHARP)
+  list(APPEND EXTERNAL_PROJECT_OPTIONAL_CMAKE_CACHE_ARGS
+    -DSWIG_DIR:PATH=${SWIG_DIR}
+    -DSWIG_EXECUTABLE:PATH=${SWIG_EXECUTABLE})
 endif()
 
 #-----------------------------------------------------------------------------

Source/Wrappers/iMSTKCSharpWrapper/CMakeLists.txt

-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.9)
 
 project(iMSTKSharp VERSION 0.1.0 LANGUAGES CSharp C CXX)