cmake: Forgot to add this file to revision control.

Fixes Bugzilla #5003.

--HG--
extra : rebase_source : bf8f9f7b3f96ae9a7c11d634487ca83712487c27
extra : histedit_source : 05eb4076f48da86a74c93a9bb5fb3a7228624bf0
diff --git a/sdl2-config-version.cmake.in b/sdl2-config-version.cmake.in
new file mode 100644
index 0000000..c987bc1
--- /dev/null
+++ b/sdl2-config-version.cmake.in
@@ -0,0 +1,11 @@
+set(PACKAGE_VERSION "@SDL_VERSION@")
+
+if(PACKAGE_VERSION VERSION_LESS PACKAGE_FIND_VERSION)
+  set(PACKAGE_VERSION_COMPATIBLE FALSE)
+else()
+  set(PACKAGE_VERSION_COMPATIBLE TRUE)
+  if(PACKAGE_FIND_VERSION STREQUAL PACKAGE_VERSION)
+    set(PACKAGE_VERSION_EXACT TRUE)
+  endif()
+endif()
+