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