dnl @synopsis TAC_ARG_WITH_3PL_SUB( VALUE_NAME, VALUE_SUB_NAME, VALUE_DESCRIPTION) dnl dnl Test for --with-${VALUE_NAME}-${VALUE_SUB_NAME} and set to no if value not specified. dnl dnl Use this macro to set variables, such as library names and include paths, which dnl include an underscore. dnl dnl This file was based on tac_arg_with_sub.m4 by Ken Stanley dnl @author Jim Willenbring dnl AC_DEFUN([TAC_ARG_WITH_3PL_SUB], [ AC_ARG_WITH([$1-$2], AC_HELP_STRING([--with-$1-$2],[$3]), tac_with_$1_$2=$withval, tac_with_$1_$2=no) ])