我在Mac Osx上編譯（make）ruby問題。我得到以下錯誤： 編譯RACC/cparse在Mac OSX上構建Ruby的問題Snow Leopard
mkdir -p ../../../.ext/i686-darwin10.2.0/racc gcc -I. -I../../.. -I../../../. -I../../.././ext/racc/cparse -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -fno-common -D_XOPEN_SOURCE=1 -fno-common -pipe -fno-common -c cparse.c cc -dynamic -bundle -undefined suppress -flat_namespace -o ../../../.ext/i686-darwin10.2.0/racc/cparse.bundle cparse.o -L. -L../../.. -L. -lruby -lpthread -ldl -lobjc compiling readline gcc -I. -I../.. -I../../. -I../.././ext/readline -DHAVE_READLINE_READLINE_H -DHAVE_READLINE_HISTORY_H -DHAVE_RL_FILENAME_COMPLETION_FUNCTION -DHAVE_RL_COMPLETION_MATCHES -DHAVE_RL_DEPREP_TERM_FUNCTION -DHAVE_RL_COMPLETION_APPEND_CHARACTER -DHAVE_RL_BASIC_WORD_BREAK_CHARACTERS -DHAVE_RL_COMPLETER_WORD_BREAK_CHARACTERS -DHAVE_RL_BASIC_QUOTE_CHARACTERS -DHAVE_RL_COMPLETER_QUOTE_CHARACTERS -DHAVE_RL_FILENAME_QUOTE_CHARACTERS -DHAVE_RL_ATTEMPTED_COMPLETION_OVER -DHAVE_RL_LIBRARY_VERSION -DHAVE_RL_EVENT_HOOK -DHAVE_RL_CLEANUP_AFTER_SIGNAL -DHAVE_REPLACE_HISTORY_ENTRY -DHAVE_REMOVE_HISTORY -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -fno-common -D_XOPEN_SOURCE=1 -fno-common -pipe -fno-common -c readline.c readline.c: In function ‘username_completion_proc_call’: readline.c:730: error: ‘username_completion_function’ undeclared (first use in this function) readline.c:730: error: (Each undeclared identifier is reported only once readline.c:730: error: for each function it appears in.) make[1]: * [readline.o] Error 1 make: * [all] Error 1