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AC_PROMPT_USER(VARIABLENAME,QUESTION,[DEFAULT])
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.
http://autoconf-archive.cryp.to/ac_prompt_user.m4
Copyright © 2008 Wes Hardaker <wjhardaker@ucdavis.edu>
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