extend to support rendering to RenderTarget/OpenGL texture on Linux

example/linux/CMakeLists.txt

@@ -90,6 +90,9 @@ set_target_properties(${BINARY_NAME}
 # them to the application.
 include(flutter/generated_plugins.cmake)
 
+include_directories(../../ios/include)
+
+
 
 # === Installation ===
 # By default, "installing" just makes a relocatable bundle in the build