1 # AM_CONDITIONAL -*- Autoconf -*-
3 # Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005, 2006
4 # Free Software Foundation, Inc.
6 # This file is free software; the Free Software Foundation
7 # gives unlimited permission to copy and/or distribute it,
8 # with or without modifications, as long as this notice is preserved.
12 # AM_CONDITIONAL(NAME, SHELL-CONDITION)
13 # -------------------------------------
14 # Define a conditional.
15 AC_DEFUN([AM_CONDITIONAL],
17 ifelse([$1], [TRUE], [AC_FATAL([$0: invalid condition: $1])],
18 [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
19 AC_SUBST([$1_TRUE])dnl
20 AC_SUBST([$1_FALSE])dnl
21 _AM_SUBST_NOTMAKE([$1_TRUE])dnl
22 _AM_SUBST_NOTMAKE([$1_FALSE])dnl
30 AC_CONFIG_COMMANDS_PRE(
31 [if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
32 AC_MSG_ERROR([[conditional "$1" was never defined.
33 Usually this means the macro was only invoked conditionally.]])