# Compile C headers
	# This method call compile_header_strucs method that has to be refined
	fun compile_header do
		self.header.add_decl("#include <stdlib.h>")
		self.header.add_decl("#include <stdio.h>")
		self.header.add_decl("#include <string.h>")
		# longjmp !
		self.header.add_decl("#include <setjmp.h>\n")
		self.header.add_decl("#include <sys/types.h>\n")
		self.header.add_decl("#include <unistd.h>\n")
		self.header.add_decl("#include <stdint.h>\n")
		self.header.add_decl("#ifdef __linux__")
		self.header.add_decl("	#include <endian.h>")
		self.header.add_decl("#endif")
		self.header.add_decl("#include <inttypes.h>\n")
		self.header.add_decl("#include \"gc_chooser.h\"")
		if modelbuilder.toolcontext.opt_trace.value then self.header.add_decl("#include \"traces.h\"")
		self.header.add_decl("#ifdef __APPLE__")
		self.header.add_decl("	#include <TargetConditionals.h>")
		self.header.add_decl("	#include <syslog.h>")
		self.header.add_decl("	#include <libkern/OSByteOrder.h>")
		self.header.add_decl("	#define be32toh(x) OSSwapBigToHostInt32(x)")
		self.header.add_decl("#endif")
		self.header.add_decl("#ifdef _WIN32")
		self.header.add_decl("	#define be32toh(val) _byteswap_ulong(val)")
		self.header.add_decl("#endif")
		self.header.add_decl("#ifdef ANDROID")
		self.header.add_decl("	#ifndef be32toh")
		self.header.add_decl("		#define be32toh(val) betoh32(val)")
		self.header.add_decl("	#endif")
		self.header.add_decl("	#include <android/log.h>")
		self.header.add_decl("	#define PRINT_ERROR(...) (void)__android_log_print(ANDROID_LOG_WARN, \"Nit\", __VA_ARGS__)")
		self.header.add_decl("#elif TARGET_OS_IPHONE")
		self.header.add_decl("	#define PRINT_ERROR(...) syslog(LOG_ERR, __VA_ARGS__)")
		self.header.add_decl("#else")
		self.header.add_decl("	#define PRINT_ERROR(...) fprintf(stderr, __VA_ARGS__)")
		self.header.add_decl("#endif")

		compile_header_structs
		compile_nitni_structs
		compile_catch_stack

		var gccd_disable = modelbuilder.toolcontext.opt_no_gcc_directive.value
		if gccd_disable.has("noreturn") or gccd_disable.has("all") then
			# Signal handler function prototype
			self.header.add_decl("void fatal_exit(int);")
		else
			self.header.add_decl("void fatal_exit(int) __attribute__ ((noreturn));")
		end

		if gccd_disable.has("likely") or gccd_disable.has("all") then
			self.header.add_decl("#define likely(x)       (x)")
			self.header.add_decl("#define unlikely(x)     (x)")
		else if gccd_disable.has("correct-likely") then
			# invert the `likely` definition
			# Used by masochists to bench the worst case
			self.header.add_decl("#define likely(x)       __builtin_expect((x),0)")
			self.header.add_decl("#define unlikely(x)     __builtin_expect((x),1)")
		else
			self.header.add_decl("#define likely(x)       __builtin_expect((x),1)")
			self.header.add_decl("#define unlikely(x)     __builtin_expect((x),0)")
		end

		# Global variable used by intern methods
		self.header.add_decl("extern int glob_argc;")
		self.header.add_decl("extern char **glob_argv;")
		self.header.add_decl("extern val *glob_sys;")
	end