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(autoconf.info)Configuration Commands

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Running Arbitrary Configuration Commands
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   You execute arbitrary commands either before, during and after
`config.status' is run.  The three following macros accumulate the
commands to run when they are called multiple times.
`AC_CONFIG_COMMANDS' replaces the obsolete macro `AC_OUTPUT_COMMANDS',
see Note: Obsolete Macros, for details.

 - Macro: AC_CONFIG_COMMANDS (TAG..., [CMDS], [INIT-CMDS])
     Specify additional shell commands to run at the end of
     `config.status', and shell commands to initialize any variables
     from `configure'.  Associate the commands to the TAG.  Since
     typically the CMDS create a file, TAG should naturally be the name
     of that file.  This macro is one of the instantiating macros, see
     Note: Configuration Actions.

     Here is an unrealistic example:
          fubar=42
          AC_CONFIG_COMMANDS([fubar],
                             [echo this is extra $fubar, and so on.],
                             [fubar=$fubar])

     Here is a better one:
          AC_CONFIG_COMMANDS([time-stamp], [date >time-stamp])

 - Macro: AC_CONFIG_COMMANDS_PRE (CMDS)
     Execute the CMDS right before creating `config.status'.  A typical
     use is computing values derived from variables built during the
     execution of `configure':

          AC_CONFIG_COMMANDS_PRE(
          [LTLIBOBJS=`echo $LIBOBJS | sed 's/\.o/\.lo/g'`
          AC_SUBST(LTLIBOBJS)])

 - Macro: AC_CONFIG_COMMANDS_POST (CMDS)
     Execute the CMDS right after creating `config.status'.