Optimize function calls: Set non-exported symbols hidden

Author: danngreen

CosineKitty-Sapphire/CMakeLists.txt

@@ -56,7 +56,8 @@ target_include_directories(Sapphire PRIVATE
 )
 
 target_compile_options(Sapphire PRIVATE 
-#TODO
+     -fvisibility=hidden
+     -fvisibility-inlines-hidden
 )
 
 target_compile_definitions(Sapphire PRIVATE 

CosineKitty-Sapphire/plugin.cpp

@@ -2,6 +2,7 @@
 
 Plugin *pluginInstance;
 
+__attribute__ ((visibility ("default")))
 void init(Plugin *p) {
   pluginInstance = p;