Squashed 'external/SDL/' content from commit f317581c91

git-subtree-dir: external/SDL
git-subtree-split: f317581c91961ee628446886dd4df87e9c16ac79

Xcode/SDLTest/config.xcconfig

@@ -0,0 +1,14 @@
+//
+//  config.xcconfig
+//  SDL tests
+//
+
+// Configuration settings file format documentation can be found at:
+// https://help.apple.com/xcode/#/dev745c5c974
+
+// Include any optional config for this build
+// This allows you to set DEVELOPMENT_TEAM for all targets, for example.
+#include? "build.xcconfig"
+
+CONFIG_FRAMEWORK_LDFLAGS = -lSDL3_test
+