use RC for lib too

resources/rssguard.rc.in

@@ -7,13 +7,13 @@ VS_VERSION_INFO VERSIONINFO
   PRODUCTVERSION @PROJECT_VERSION_MAJOR@,@PROJECT_VERSION_MINOR@,@PROJECT_VERSION_PATCH@,0
   FILEFLAGSMASK 0x3fL
   #ifdef _DEBUG
-    FILEFLAGS 0x1L
+    FILEFLAGS VS_FF_DEBUG
   #else
     FILEFLAGS 0x0L
   #endif
-  FILEOS 0x4L
-  FILETYPE 0x2L
-  FILESUBTYPE 0x0L
+  FILEOS VOS__WINDOWS32
+  FILETYPE VFT_UNKNOWN
+  FILESUBTYPE VFT2_UNKNOWN
 
 BEGIN
     BLOCK "StringFileInfo"

src/librssguard/CMakeLists.txt

@@ -451,6 +451,11 @@ if(APPLE OR WIN32 OR OS2)
     qt_add_resources(SOURCES ${CMAKE_SOURCE_DIR}/resources/icons.qrc)
 endif()
 
+if(WIN32)
+  enable_language("RC")
+  list(APPEND SOURCES "${CMAKE_BINARY_DIR}/rssguard.rc")
+endif()
+
 add_library(rssguard SHARED ${SOURCES} ${QM_FILES})
 
 target_compile_definitions(rssguard PRIVATE RSSGUARD_DLLSPEC=Q_DECL_EXPORT)