dnl Process this file with autoconf to produce a configure script.

dnl Initialise. This can be passed any old file. 
AC_INIT(hey_arg.h)
AC_CONFIG_HEADER(config.h)

dnl Checks for programs.
AC_PROG_CC

dnl
dnl if the user hasn't specified CFLAGS, then
dnl   if compiler is gcc, then use -O2 and some warning flags
dnl   else use os-specific flags or -O
dnl

if test -n "$GCC"; then
	CFLAGS="-O2 -Wall -pedantic"
else
	case "$host_os" in
		*hpux*)  CFLAGS=" +O3"                      ;;
		*ultrix* | *osf*) CFLAGS=" -O -Olimit 2000" ;;
		*)       CFLAGS=" -O" ;;
	esac
fi

AC_PROG_INSTALL


AC_PROG_MAKE_SET

dnl Checks for libraries.

dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(utmpx.h)

dnl Checks for typedefs, structures, and compiler characteristics.

dnl Checks for library functions.
AC_TYPE_SIGNAL
AC_FUNC_VPRINTF
AC_CHECK_FUNCS(strdup,,STRDUP_OBJ=mystrdup.o)
AC_CHECK_FUNCS(getutent,,UT_OBJ=utent.o)
AC_CHECK_LIB(readline,readline)

dnl Make any macro substitutions that we ought to. 
AC_SUBST(UT_OBJ)

AC_OUTPUT(Makefile)