diff --git a/CMakeLists.txt b/CMakeLists.txt
index b015981969..065d483518 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1252,6 +1252,27 @@ if(SDL_JOYSTICK)
     set(SDL_JOYSTICK_DSU 1)
     file(GLOB JOYSTICK_DSU_SOURCES ${SDL2_SOURCE_DIR}/src/joystick/dsu/*.c)
     list(APPEND SOURCE_FILES ${JOYSTICK_DSU_SOURCES})
+    
+    # DSU requires network libraries on Unix-like systems
+    if(UNIX AND NOT APPLE AND NOT ANDROID)
+      if(NOT WIN32)
+        # Check if we need to link against socket libraries
+        include(CheckFunctionExists)
+        check_function_exists(socket HAVE_SOCKET_IN_LIBC)
+        if(NOT HAVE_SOCKET_IN_LIBC)
+          # Try to find socket in libsocket (Solaris)
+          check_library_exists(socket socket "" HAVE_LIBSOCKET)
+          if(HAVE_LIBSOCKET)
+            list(APPEND EXTRA_LIBS socket)
+          endif()
+          # Try to find inet_addr in libnsl (Solaris)
+          check_library_exists(nsl inet_addr "" HAVE_LIBNSL)
+          if(HAVE_LIBNSL)
+            list(APPEND EXTRA_LIBS nsl)
+          endif()
+        endif()
+      endif()
+    endif()
   endif()
 endif()
 
@@ -2480,6 +2501,11 @@ elseif(HAIKU)
 
   CheckPTHREAD()
   list(APPEND EXTRA_LIBS root be media game device textencoding)
+  
+  # Add network library for DSU support on Haiku
+  if(SDL_DSU_JOYSTICK)
+    list(APPEND EXTRA_LIBS network)
+  endif()
 
 elseif(RISCOS)
   if(SDL_MISC)