Annotation of embedaddon/ntp/m4/define_dir.m4, revision 1.1.1.1

1.1       misho       1: dnl @synopsis AC_DEFINE_DIR(VARNAME, DIR [, DESCRIPTION])
                      2: dnl
                      3: dnl This macro defines (with AC_DEFINE) VARNAME to the expansion of the DIR
                      4: dnl variable, taking care of fixing up ${prefix} and such.
                      5: dnl
                      6: dnl Note that the 3 argument form is only supported with autoconf 2.13 and
                      7: dnl later (i.e. only where AC_DEFINE supports 3 arguments).
                      8: dnl
                      9: dnl Examples:
                     10: dnl
                     11: dnl    AC_DEFINE_DIR(DATADIR, datadir)
                     12: dnl    AC_DEFINE_DIR(PROG_PATH, bindir, [Location of installed binaries])
                     13: dnl
                     14: dnl @version $Id: acinclude.m4,v 1.3 2000/08/04 03:26:22 stenn Exp $
                     15: dnl @author Alexandre Oliva <oliva@lsd.ic.unicamp.br>
                     16: 
                     17: AC_DEFUN([AC_DEFINE_DIR], [
                     18:        ac_expanded=`(
                     19:            test "x$prefix" = xNONE && prefix="$ac_default_prefix"
                     20:            test "x$exec_prefix" = xNONE && exec_prefix="${prefix}"
                     21:            eval echo \""[$]$2"\"
                     22:        )`
                     23:        ifelse([$3], [],
                     24:          AC_DEFINE_UNQUOTED([$1], ["$ac_expanded"]),
                     25:          AC_DEFINE_UNQUOTED([$1], ["$ac_expanded"], [$3]))
                     26: ])

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