int 
#ifdef HAVE_FEATURE
thing(int args)
#else
other_thing(int args)
#endif
{
	do_things();

#ifdef HAVE_FEATURE
	do_feature_things();
#else 
	do_workaround_things();
#endif

	do_more_things();
	return whatever;
}

int main() {
#ifdef HAVE_FEATURE
	thing(7);
#else
	other_thing(7);
#endif

	return 0;
}