add a lib for rendering text in sdl2 and rules to make in makefile

SDL2_ttf/sdl2_ttf-config-version.cmake.in

@@ -0,0 +1,12 @@
+# sdl2_ttf cmake project-config-version input for ./configure scripts
+
+set(PACKAGE_VERSION "@MAJOR_VERSION@.@MINOR_VERSION@.@MICRO_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()