SDL: cmake: only build testnative when X11 is available

From ac9e8691a23bf8089563f6927c3ef5d6fca0196c Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Thu, 21 Jul 2022 14:49:35 +0200
Subject: [PATCH] cmake: only build testnative when X11 is available

---
 test/CMakeLists.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 0781aad1308..9415c83fe68 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -116,7 +116,7 @@ if(APPLE)
                               testutils.c)
 elseif(WINDOWS)
     add_executable(testnative testnative.c testnativew32.c testutils.c)
-elseif(SDL_X11)
+elseif(HAVE_X11)
     add_executable(testnative testnative.c testnativex11.c testutils.c)
     target_link_libraries(testnative X11)
 endif()
@@ -313,7 +313,7 @@ else()
         teststreaming
         testviewport
     )
-    if(WINDOWS OR APPLE OR SDL_X11)
+    if(WINDOWS OR APPLE OR HAVE_X11)
         list(APPEND NEEDS_RESOURCES testnative)
     endif()
 endif()