SDL: cmake: bump minimum CMake allowed to 3.11.0.

SDL Commits
1 
From cd6f96dede29a96c0d49623ec792800ab34f57de Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Thu, 30 Sep 2021 09:57:51 -0400
Subject: [PATCH] cmake: bump minimum CMake allowed to 3.11.0.

This cmake is 3 years old, but it removes confusion about the CFLAGS
environment variable (as of CMake 3.10.0, reference PR #4681) and also
consolidates resolves the need to have a separate requirement for Windows
Store apps (which requires CMake 3.11.0).
---
 CMakeLists.txt | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7ecaf43ba1..be8103614f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,11 +2,10 @@ if(${CMAKE_CURRENT_SOURCE_DIR} STREQUAL ${CMAKE_CURRENT_BINARY_DIR})
   message(FATAL_ERROR "Prevented in-tree build. Please create a build directory outside of the SDL source code and run \"cmake -S ${CMAKE_SOURCE_DIR} -B .\" from there")
 endif()
 
-cmake_minimum_required(VERSION 3.0.0)
+cmake_minimum_required(VERSION 3.11.0)
 project(SDL2 C CXX)
 
 if(WINDOWS_STORE)
-  cmake_minimum_required(VERSION 3.11)
   add_definitions(-DSDL_BUILDING_WINRT=1 -ZW)
 endif()