thats why it needed testing

source/funkin/native/Linux.hx

@@ -1,6 +1,7 @@
 package funkin.native;
 
 #if linux
+@:cppFileCode("#include <stdio.h>")
 class Linux {
 	@:functionCode('
 		FILE *meminfo = fopen("/proc/meminfo", "r");

source/funkin/native/Mac.hx

@@ -1,6 +1,7 @@
 package funkin.native;
 
 #if mac
+@:cppFileCode("#include <sys/sysctl.h>")
 class Mac {
 	@:functionCode('
 	int mib [] = { CTL_HW, HW_MEMSIZE };