configure: WARNING: sys/bitypes.h: present but cannot be compiled
configure: WARNING: sys/bitypes.h: check for missing prerequisite headers?
configure: WARNING: sys/bitypes.h: see the Autoconf documentation
configure: WARNING: sys/bitypes.h: section "Present But Cannot Be Compiled"
configure: WARNING: sys/bitypes.h: proceeding with the compiler's result
configure: WARNING: ## ----------------------------- ##
configure: WARNING: ## ----------------------------- ##