chore(build): revert to sdl2

vendor/sdl-2.30.5/cmake/test/test_sdlconfig.sh

@@ -0,0 +1,51 @@
+#!/bin/sh
+
+if test "x$CC" = "x"; then
+    CC=cc
+fi
+
+machine="$($CC -dumpmachine)"
+case "$machine" in
+    *mingw* )
+        EXEPREFIX=""
+        EXESUFFIX=".exe"
+        ;;
+    *android* )
+        EXEPREFIX="lib"
+        EXESUFFIX=".so"
+        LDFLAGS="$LDFLAGS -shared"
+        ;;
+    * )
+        EXEPREFIX=""
+        EXESUFFIX=""
+        ;;
+esac
+
+set -e
+
+# Get the canonical path of the folder containing this script
+testdir=$(cd -P -- "$(dirname -- "$0")" && printf '%s\n' "$(pwd -P)")
+SDL_CFLAGS="$( sdl2-config --cflags )"
+SDL_LDFLAGS="$( sdl2-config --libs )"
+SDL_STATIC_LDFLAGS="$( sdl2-config --static-libs )"
+
+compile_cmd="$CC -c "$testdir/main_gui.c" -o main_gui_sdlconfig.c.o $CFLAGS $SDL_CFLAGS"
+link_cmd="$CC main_gui_sdlconfig.c.o -o ${EXEPREFIX}main_gui_sdlconfig${EXESUFFIX} $SDL_LDFLAGS $LDFLAGS"
+static_link_cmd="$CC main_gui_sdlconfig.c.o -o ${EXEPREFIX}main_gui_sdlconfig_static${EXESUFFIX} $SDL_STATIC_LDFLAGS $LDFLAGS"
+
+echo "-- CC:                 $CC"
+echo "-- CFLAGS:             $CFLAGS"
+echo "-- LDFLAGS:            $LDFLAGS"
+echo "-- SDL_CFLAGS:         $SDL_CFLAGS"
+echo "-- SDL_LDFLAGS:        $SDL_LDFLAGS"
+echo "-- SDL_STATIC_LDFLAGS: $SDL_STATIC_LDFLAGS"
+
+echo "-- COMPILE:       $compile_cmd"
+echo "-- LINK:          $link_cmd"
+echo "-- STATIC_LINK:   $static_link_cmd"
+
+set -x
+
+$compile_cmd
+$link_cmd
+$static_link_cmd