Macro: ac_prompt_user

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Synopsis

  `AC_PROMPT_USER(VARIABLENAME,QUESTION,[DEFAULT])`

Version

  1.1.1.1 (2001/07/26) Miscellaneous @ ac-archive-0.5.39

Author

  Wes Hardaker <wjhardaker@ucdavis.edu>

Description

  Asks a QUESTION and puts the results in VARIABLENAME with an optional DEFAULT value if the user merely hits return. Also calls AC_DEFINE_UNQUOTED() on the VARIABLENAME for VARIABLENAMEs that should be entered into the config.h file as well.

M4 Source Code

      AC_DEFUN([AC_PROMPT_USER],
      [
      MSG_CHECK=`echo "$2" | tail -1`
      AC_CACHE_CHECK($MSG_CHECK, ac_cv_user_prompt_$1,
      [echo "" >&AC_FD_MSG
      AC_PROMPT_USER_NO_DEFINE($1,[$2],$3)
      eval ac_cv_user_prompt_$1=\$$1
      echo $ac_n "setting $MSG_CHECK to...  $ac_c" >&AC_FD_MSG
      ])
      if test "$ac_cv_user_prompt_$1" != "none"; then
        if test "$4" != ""; then
          AC_DEFINE_UNQUOTED($1,"$ac_cv_user_prompt_$1")
        else
          AC_DEFINE_UNQUOTED($1,$ac_cv_user_prompt_$1)
        fi
      fi
      ]) dnl