SDL: Set POSITION_INDEPENDENT_CODE property on SDL2 for CMake 3.0

SDL Commits
1

https://github.com/libsdl-org/SDL/commit/ad272ac6901e979e7431d72629e3189727eed037

From ad272ac6901e979e7431d72629e3189727eed037 Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Wed, 8 Jun 2022 00:32:15 +0200
Subject: [PATCH] Set POSITION_INDEPENDENT_CODE property on SDL2 for CMake 3.0

---
 CMakeLists.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 751bddd8553..294575e964e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2939,6 +2939,7 @@ if(SDL_SHARED)
   add_library(SDL2 SHARED ${SOURCE_FILES} ${VERSION_SOURCES})
   # alias target for in-tree builds
   add_library(SDL2::SDL2 ALIAS SDL2)
+  set_target_properties(SDL2 PROPERTIES POSITION_INDEPENDENT_CODE TRUE)
   if(APPLE)
     set_target_properties(SDL2 PROPERTIES
       MACOSX_RPATH 1