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ac_subst_dir

Synopsis

AC_SUBST_DIR(VARNAME, [DIR])

Description

This macro substitutes (with AC_SUBST) VARNAME with the expansion of itself or the DIR variable if specified, taking care of fixing up ${prefix} and such.

Side effect: VARNAME is replaced with the expansion.

AC_SUBST_DIR bases on Alexandre Oliva's AC_DEFINE_DIR macro.

Examples:

   AC_SUBST_DIR(DATADIR)

Author

Mathias Hasselmann <mathias.hasselmann@gmx.de>

Last Modified

2003-04-24

M4 Source Code

AC_DEFUN([AC_SUBST_DIR], [
        ifelse($2,,,$1="[$]$2")
        $1=`(
            test "x$prefix" = xNONE && prefix="$ac_default_prefix"
            test "x$exec_prefix" = xNONE && exec_prefix="${prefix}"
            eval echo \""[$]$1"\"
        )`
        AC_SUBST($1)
])