added cached wrapper to generate nodejs bindings for swig < 4.0.0

Author: sy-c

CMakeLists.txt

@@ -341,14 +341,22 @@ if(SWIG_FOUND)
   if (NODEJS_INCLUDE_DIRS)
     message("Bindings for node.js will be generated")
     message("Using NODEJS_INCLUDE_DIRS=${NODEJS_INCLUDE_DIRS}")
-    set(CMAKE_SWIG_FLAGS -module infoLoggerForNodejs -v8)
-    swig_add_library(infoLoggerForNodejs LANGUAGE javascript SOURCES src/infoLogger.i  ${INFOLOGGER_LIB_OBJECTS})
+    if (${SWIG_VERSION} VERSION_LESS "4.0.0")
+      message("SWIG>=4.0.0 needed to generate node.js wrapper, reusing cached one")
+      set(SWIG_MODULE_infoLoggerForNodejs_REAL_NAME infoLoggerForNodejs)
+      add_library (infoLoggerForNodejs SHARED src/infoLoggerJAVASCRIPT_wrap.cxx ${INFOLOGGER_LIB_OBJECTS})
+      target_include_directories(${SWIG_MODULE_infoLoggerForNodejs_REAL_NAME} PRIVATE ${INFOLOGGER_INCLUDE_DIRS} ${NODEJS_INCLUDE_DIRS})      
+      set_target_properties(${SWIG_MODULE_infoLoggerForNodejs_REAL_NAME} PROPERTIES PREFIX "")
+    else()
+      set(CMAKE_SWIG_FLAGS -module infoLoggerForNodejs -v8)
+      swig_add_library(infoLoggerForNodejs LANGUAGE javascript SOURCES src/infoLogger.i  ${INFOLOGGER_LIB_OBJECTS})
+    endif()
     target_include_directories(${SWIG_MODULE_infoLoggerForNodejs_REAL_NAME} PRIVATE ${INFOLOGGER_INCLUDE_DIRS} ${NODEJS_INCLUDE_DIRS})
     target_compile_definitions(${SWIG_MODULE_infoLoggerForNodejs_REAL_NAME} PRIVATE -DBUILDING_NODE_EXTENSION)
     set_target_properties(${SWIG_MODULE_infoLoggerForNodejs_REAL_NAME} PROPERTIES OUTPUT_NAME infoLogger SUFFIX ".node")
     install(TARGETS ${SWIG_MODULE_infoLoggerForNodejs_REAL_NAME} DESTINATION ${CMAKE_INSTALL_LIBDIR})
   endif()
-
+  
 endif()