dnl
dnl $Id: configure.in,v 1.7 2000/03/09 06:52:52 finnag Exp $
dnl
dnl Written by Finn Arne Gangstad <finnag@fast.no>
dnl

AC_INIT(fmirror.c)

AC_CONFIG_HEADER(config.h)

PROGS="fmirror"

SET_CFLAGS="$CFLAGS"
AC_PROG_CC
test -z "$SET_CFLAGS" -a "gcc" = "$CC" && CFLAGS="-O2 -Wall -W -Wshadow -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wbad-function-cast -Wmissing-declarations"

AC_PROG_INSTALL
AC_HEADER_TIME
AC_STRUCT_TM
AC_TYPE_SIGNAL
AC_TYPE_SIZE_T
AC_TYPE_PID_T

AC_CHECK_LIB(c, gethostbyaddr, :,
	AC_CHECK_LIB(nsl, gethostbyaddr, LIBS="-lnsl $LIBS"))

AC_CHECK_LIB(c, socket, :,
 	AC_CHECK_LIB(socket, socket, LIBS="-lsocket $LIBS"))

AC_CHECK_LIB(c, fabs, :,
	AC_CHECK_LIB(m, fabs, LIBS="-lm $LIBS"))

AC_CHECK_FUNCS(inet_aton vsnprintf strerror)
AC_HAVE_HEADERS(sys/select.h)

AC_CHECK_TYPE(ulong, unsigned long)
AC_CHECK_TYPE(uint, unsigned int)
AC_CHECK_TYPE(ushort, unsigned short)

AC_MSG_CHECKING([whether optarg is defined in headers])
AC_TRY_COMPILE(
	[#include <unistd.h>
	#include <stdlib.h>],
	[optarg = (char *)0],
	AC_DEFINE(HAVE_OPTARG)
	AC_MSG_RESULT(yes),
	AC_MSG_RESULT(no))

AC_MSG_CHECKING([whether optind is defined in headers])
AC_TRY_COMPILE(
	[#include <unistd.h>
	#include <stdlib.h>],
	[optind = 0],
	AC_DEFINE(HAVE_OPTIND)
	AC_MSG_RESULT(yes),
	AC_MSG_RESULT(no))

AC_MSG_CHECKING([whether opterr is defined in headers])
AC_TRY_COMPILE(
	[#include <unistd.h>
	#include <stdlib.h>],
	[opterr = 0],
	AC_DEFINE(HAVE_OPTERR)
	AC_MSG_RESULT(yes),
	AC_MSG_RESULT(no))

AC_MSG_CHECKING([return type of signal handlers])
test "$ac_cv_type_signal" = "void" || AC_DEFINE(SIGHANDLERS_RETURN_SOMETHING)
AC_MSG_RESULT($ac_cv_type_signal)

AC_SUBST(PROGS)dnl
AC_SUBST(CFLAGS)dnl
AC_SUBST(LIBS)dnl
AC_SUBST(LDFLAGS)dnl

AC_OUTPUT(Makefile)