I have run the configure script and get the following warnings. Are these
warning important?

configure: WARNING: netinet/ip.h: present but cannot be compiled
configure: WARNING: netinet/ip.h: check for missing prerequisite headers?
configure: WARNING: netinet/ip.h: proceeding with the preprocessor's result
configure: WARNING:     ## ------------------------------------ ##
configure: WARNING:     ## Report this to bug-autoconf AT gnu DOT org. ##
configure: WARNING:     ## ------------------------------------ ##
configure: WARNING: *** No readline library, no history and command line
editing in amrecover!