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- # AM_CONDITIONAL -*- Autoconf -*-
-
- # Copyright (C) 1997, 2000, 2001, 2003 Free Software Foundation, Inc.
-
- # This program is free software; you can redistribute it and/or modify
- # it under the terms of the GNU General Public License as published by
- # the Free Software Foundation; either version 2, or (at your option)
- # any later version.
-
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
-
- # You should have received a copy of the GNU General Public License
- # along with this program; if not, write to the Free Software
- # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- # 02111-1307, USA.
-
- # serial 6
-
- # AM_CONDITIONAL(NAME, SHELL-CONDITION)
- # -------------------------------------
- # Define a conditional.
- AC_DEFUN([AM_CONDITIONAL],
- [AC_PREREQ(2.52)dnl
- ifelse([$1], [TRUE], [AC_FATAL([$0: invalid condition: $1])],
- [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
- AC_SUBST([$1_TRUE])
- AC_SUBST([$1_FALSE])
- if $2; then
- $1_TRUE=
- $1_FALSE='#'
- else
- $1_TRUE='#'
- $1_FALSE=
- fi
- AC_CONFIG_COMMANDS_PRE(
- [if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
- AC_MSG_ERROR([conditional "$1" was never defined.
- Usually this means the macro was only invoked conditionally.])
- fi])])
-