require 'mkmf' have_library("sun", "getpwnam") # NIS (== YP) interface for IRIX 4 a = have_func("getlogin") b = have_func("getpwent") c = have_func("getgrent") if a or b or c have_struct_member('struct passwd', 'pw_gecos', 'pwd.h') have_struct_member('struct passwd', 'pw_change', 'pwd.h') have_struct_member('struct passwd', 'pw_quota', 'pwd.h') have_struct_member('struct passwd', 'pw_age', 'pwd.h') have_struct_member('struct passwd', 'pw_class', 'pwd.h') have_struct_member('struct passwd', 'pw_comment', 'pwd.h') unless /cygwin/ === RUBY_PLATFORM have_struct_member('struct passwd', 'pw_expire', 'pwd.h') create_makefile("etc") end