SDL: Switch from EXTRA_LIBS to SDL_EXTRA_LIBS

SDL Commits
1 
From bc9e0bb7ad70c39cd55a39e59eb8bc6b18cc3eaf Mon Sep 17 00:00:00 2001
From: Elad Lahav <[EMAIL REDACTED]>
Date: Tue, 10 Jan 2023 05:15:19 -0500
Subject: [PATCH] Switch from EXTRA_LIBS to SDL_EXTRA_LIBS

---
 CMakeLists.txt        | 2 +-
 cmake/sdlchecks.cmake | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c28e14910f79..8ab803015d3c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1538,7 +1538,7 @@ elseif(UNIX AND NOT APPLE AND NOT RISCOS AND NOT HAIKU)
         set(SDL_AUDIO_DRIVER_QNX 1)
         file(GLOB QNX_AUDIO_SOURCES ${SDL3_SOURCE_DIR}/src/audio/qnx/*.c)
         list(APPEND SOURCE_FILES ${QNX_AUDIO_SOURCES})
-        list(APPEND EXTRA_LIBS asound)
+        list(APPEND SDL_EXTRA_LIBS asound)
         set(HAVE_SDL_AUDIO TRUE)
     endif()
     CheckOSS()
diff --git a/cmake/sdlchecks.cmake b/cmake/sdlchecks.cmake
index 4e7ac1e5869c..b462b704f387 100644
--- a/cmake/sdlchecks.cmake
+++ b/cmake/sdlchecks.cmake
@@ -767,7 +767,7 @@ macro(CheckQNXScreen)
       set(SDL_VIDEO_DRIVER_QNX 1)
       file(GLOB QNX_VIDEO_SOURCES ${SDL3_SOURCE_DIR}/src/video/qnx/*.c)
       list(APPEND SOURCE_FILES ${QNX_VIDEO_SOURCES})
-      list(APPEND EXTRA_LIBS screen EGL)
+      list(APPEND SDL_EXTRA_LIBS screen EGL)
     endif()
   endif()
 endmacro()