AC_INIT(packihx.c)
AC_CONFIG_HEADER(config.h:config_in.h)
AC_PREREQ(2.60)

AC_PROG_CC

AC_CHECK_SIZEOF(char, 1)
AC_CHECK_SIZEOF(short, 2)
AC_CHECK_SIZEOF(int, 4)
AC_CHECK_SIZEOF(long, 4)
AC_CHECK_SIZEOF(long long, 8)

type_name()
{
    if expr "$ac_cv_sizeof_char" '>=' "$1" >/dev/null; then
	echo "char"
	exit
    fi
    if expr "$ac_cv_sizeof_short" '>=' "$1" >/dev/null; then
	echo "short"
	exit
    fi
    if expr "$ac_cv_sizeof_int" '>=' "$1" >/dev/null; then
	echo "int"
	exit
    fi
    if expr "$ac_cv_sizeof_long" '>=' "$1" >/dev/null; then
	echo "long"
	exit
    fi
    if expr "$ac_cv_sizeof_long_long" '>=' "$1" >/dev/null; then
	echo "long long"
	exit
    fi
    echo "long long"
}

AC_MSG_CHECKING(type name for byte)
TYPE_BYTE=`type_name 1`
AC_MSG_RESULT($TYPE_BYTE)
AC_MSG_CHECKING(type name for word)
TYPE_WORD=`type_name 2`
AC_MSG_RESULT($TYPE_WORD)
AC_DEFINE_UNQUOTED(TYPE_BYTE, $TYPE_BYTE)
AC_DEFINE_UNQUOTED(TYPE_WORD, $TYPE_WORD)

AC_OUTPUT(Makefile)