1sinclude(../../config/acx.m4) 2sinclude(../../config/override.m4) 3sinclude(../transform.m4) 4 5# AM_CONDITIONAL -*- Autoconf -*- 6 7# Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005 8# Free Software Foundation, Inc. 9# 10# This file is free software; the Free Software Foundation 11# gives unlimited permission to copy and/or distribute it, 12# with or without modifications, as long as this notice is preserved. 13 14# serial 7 15 16# AM_CONDITIONAL(NAME, SHELL-CONDITION) 17# ------------------------------------- 18# Define a conditional. 19AC_DEFUN([AM_CONDITIONAL], 20[AC_PREREQ(2.52)dnl 21 ifelse([$1], [TRUE], [AC_FATAL([$0: invalid condition: $1])], 22 [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl 23AC_SUBST([$1_TRUE]) 24AC_SUBST([$1_FALSE]) 25if $2; then 26 $1_TRUE= 27 $1_FALSE='#' 28else 29 $1_TRUE='#' 30 $1_FALSE= 31fi 32AC_CONFIG_COMMANDS_PRE( 33[if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then 34 AC_MSG_ERROR([[conditional "$1" was never defined. 35Usually this means the macro was only invoked conditionally.]]) 36fi])]) 37