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- # ===========================================================================
- # https://www.gnu.org/software/autoconf-archive/ax_path_missing.html
- # ===========================================================================
- #
- # SYNOPSIS
- #
- # AX_PATH_MISSING(VARIABLE, PROG-TO-CHECK-FOR, WARNING-IF-NOT-FOUND, PATH)
- #
- # DESCRIPTION
- #
- # Check whether program PROG-TO-CHECK-FOR exists in path. If it is found,
- # set VARIABLE to the full path of PROG-TO-CHECK-FOR, otherwise warn using
- # the string WARNING-IF-NOT-FOUND and set VARIABLE to the full path of the
- # Automake missing script with PROG-TO-CHECK-FOR as the command to run.
- #
- # A typical use is the following:
- #
- # AX_PATH_MISSING([AUTOGEN],[autogen],[autogen seems missing ...])
- #
- # This macro is the combination of AC_PATH_PROG and AX_MISSING_PROG. If
- # you do not want to run AC_PATH_PROG, simply use AX_MISSING_PROG or
- # AM_MISSING.
- #
- # LICENSE
- #
- # Copyright (c) 2008 Noah Slater <nslater@bytesexual.org>
- # Copyright (c) 2008 Francesco Salvestrini <salvestrini@sourceforge.net>
- #
- # Copying and distribution of this file, with or without modification, are
- # permitted in any medium without royalty provided the copyright notice
- # and this notice are preserved. This file is offered as-is, without any
- # warranty.
-
- #serial 12
-
- AC_DEFUN([AX_PATH_MISSING], [
- AC_PATH_PROG([$1],[$2],[$4])
- AS_IF([ test -z "${$1}" ],[
- unset $1
- AX_MISSING_PROG([$1],[$2],[$3])
- ])
- ])
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