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

dnl require autoconf 2.60 (AS_ECHO/AS_ECHO_N)
AC_PREREQ([2.60])

AC_INIT([avremote],[0.4.0],[jaromil@nimk.nl],[AVRemote])
AC_CONFIG_MACRO_DIR([m4])
AC_CANONICAL_HOST

dnl backwards compatibility for autoconf >= 2.64
dnl PACKAGE_URL should be the fifth argument of AC_INIT
m4_define([AC_PACKAGE_URL], [http://nimk.nl/avremote])
AC_DEFINE(PACKAGE_URL, "AC_PACKAGE_URL", [Package URL])
AC_SUBST(PACKAGE_URL, AC_PACKAGE_URL)

dnl ==============================================================
dnl Setup for automake
dnl ==============================================================

AM_INIT_AUTOMAKE([dist-bzip2 subdir-objects])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])

AC_CONFIG_SRCDIR([src])
AC_CONFIG_HEADERS([config.h])

dnl Checks for programs.
AC_PROG_CXX
AC_PROG_CPP
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
AC_PROG_RANLIB

dnl Advanced network address translating functions
AC_CHECK_FUNCS(inet_pton inet_ntop)

dnl Support BSD4.4 "sa_len" extension when calculating sockaddrs arrays
AC_CHECK_MEMBERS(struct sockaddr.sa_len, , , [#include <sys/types.h>
#include <sys/socket.h>])

dnl Check if it is available the RFC2292 IPv4 extension and in_port_t.
AC_CHECK_TYPES([struct in_pktinfo, in_port_t], , , [#include <sys/types.h>
#include <netinet/in.h>])

AC_CHECK_HEADERS([stdio.h stdlib.h unistd.h strings.h sys/types.h sys/stat.h])


dnl ==============================================================
dnl enable UPNP
dnl ==============================================================
AC_ARG_ENABLE(discovery,
	AS_HELP_STRING([--enable-discovery],[compile with miniupnp to enable auto-discovery]),
	[have_upnp=$enableval],
	[have_upnp=no])
AC_MSG_CHECKING([if compiling using external miniupnpc library])
UPNP_LIBS="\$(top_builddir)/src/upnp/libupnpc.a"
UPNP_CPPFLAGS="-I\$(top_srcdir)/src/upnp"
if test x$have_upnp = xyes; then
# this is the default behaviour for --enable-upnp with no arguments
   AC_MSG_RESULT(yes)
   AC_DEFINE(USE_UPNP,1,[Define if building auto-detect for UPNP devices via miniupnp])
   UPNP_LIBS="-lminiupnpc"
   UPNP_CPPFLAGS="-I /usr/include/miniupnpc"
elif test x$have_upnp != xno; then
# compile from indicated dir
   AC_MSG_RESULT([yes, from $enableval])
   AC_DEFINE(USE_UPNP,1,[Define if building auto-detect for UPNP devices via miniupnp])
   UPNP_LIBS="$enableval/libminiupnpc.a"
   UPNP_CPPFLAGS="-I$enableval"
else   
   AC_MSG_RESULT(no)
fi
AC_SUBST(UPNP_LIBS)
AC_SUBST(UPNP_CPPFLAGS)


dnl ==============================================================
dnl compile with full warnings and debugging symbols
dnl ==============================================================
AC_ARG_ENABLE(debug,
    AS_HELP_STRING([--enable-debug],[compile with debug symbols (no)]),
    [enable_debug=$enableval],
    [enable_debug=no])

if test x$enable_debug = xyes; then
    GLOBAL_CFLAGS="$GLOBAL_CFLAGS -Wall -g -ggdb"
else
    GLOBAL_CFLAGS="$GLOBAL_CFLAGS -O3"
fi


# declare the flags gathered so far
CFLAGS="$GLOBAL_CFLAGS $CFLAGS $UPNP_CFLAGS"
AC_SUBST(CFLAGS)

AC_CONFIG_FILES([
Makefile
src/Makefile
src/upnp/Makefile
])
AC_OUTPUT