Applied patch from:

Koichiro IWAO <meta@vmeta.jp>

Option for disabling build of vncviewer. 



git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@5161 3789f03b-4d11-0410-bbf8-ca57d06f2519

CMakeLists.txt

@@ -402,9 +402,12 @@ if(ENABLE_NLS)
   add_subdirectory(po)
 endif()
 
-add_subdirectory(vncviewer)
+option(BUILD_VIEWER "Build TigerVNC viewer" ON)
+if(BUILD_VIEWER)
+  add_subdirectory(vncviewer)
+  add_subdirectory(media)
+endif()
 
-add_subdirectory(media)
 
 include(cmake/BuildPackages.cmake)