#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.

AC_MSG_RESULT()
AC_MSG_RESULT(configuring utunnel)
AC_MSG_RESULT()

AC_PREREQ(2.5)
AC_INIT(utunnel.c)
AM_INIT_AUTOMAKE(utunnel, 0.4)

AC_CONFIG_SRCDIR([utunnel.c])
AC_CONFIG_HEADER([config.h])

# Checks for programs.
AC_PROG_CC

LIBS="${LIBS} -L/usr/local/lib"
CPPFLAGS="${CPPFLAGS} -I/usr/local/include"

AC_CANONICAL_HOST
case "$host" in
	*-apple*)
		AC_DEFINE([MACOS], 1, [Mac OS X])
		LIBS="${LIBS} -L/opt/local/lib -L/sw/lib -lpthread"
		CPPFLAGS="${CPPFLAGS} -I/opt/local/include -I/sw/include"
		;;
	*-freebsd*)
		AC_DEFINE([FREEBSD], 1, [FreeBSD])
		LIBS="${LIBS} -pthread"
		;;
#	*-openbsd*)
#		AC_DEFINE([OPENBSD])
#		;;
#	*-netbsd*)
#		AC_DEFINE([NETBSD])
#		;;
	*-linux*)
		AC_DEFINE([LINUX], 1, [Linux])
		;;
	*)
		AC_MSG_WARN(Your OS is not officially supported yet)
		;;
esac

# Checks for libraries.
AC_CHECK_LIB([net], [libnet_init], [], [
	      echo "Error! You must have libnet."
	      exit 1
	      ])
AC_CHECK_LIB([pcap], [pcap_open_live], [], [
	      echo "Error! You must have libpcap."
	      exit 1
	      ])

# Checks for header files.
AC_CHECK_HEADERS([netinet/in.h sys/socket.h unistd.h libnet.h pcap.h], [],
	[AC_MSG_ERROR([Error! Missing header files.])])

# Checks for typedefs, structures, and compiler characteristics.

# Checks for library functions.
AC_FUNC_FORK
AC_HEADER_STDC
AC_CHECK_FUNCS([memset strdup])

AC_CONFIG_FILES([Makefile])
AC_OUTPUT