configure.ac - ring-daemon - Gitiles

 dnl Ring - configure.ac for automake 1.9 and autoconf 2.59

 dnl Process this file with autoconf to produce a configure script.
 AC_PREREQ([2.65])
 AC_INIT([Ring],[2.0.1],[ring@lists.savoirfairelinux.net],[ring])

 AC_COPYRIGHT([[Copyright (c) Savoir-Faire Linux 2004-2015]])
 AC_REVISION([$Revision$])

 dnl Where to find configure files
 AC_CONFIG_SRCDIR(src/ring_api.cpp)
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_MACRO_DIR([m4])
 AC_CANONICAL_BUILD
 AC_CANONICAL_HOST

 AM_INIT_AUTOMAKE([-Wno-portability])
 m4_ifdef([AM_PROG_AR], [AM_PROG_AR]) # required by automake 1.12
 AC_CONFIG_HEADERS([config.h])

 # Silent build by default. Use make V=1 to increase verbosity
 m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])

 dnl Check for programs
 AC_PROG_CC
 AC_PROG_CXX
 AC_PROG_OBJCXX
 AC_PROG_CPP
 AC_PROG_INSTALL
 AC_PROG_LN_S
 AC_PROG_MAKE_SET

 dnl
 dnl  Check the operating system
 dnl
 HAVE_WIN64="0"
 HAVE_IOS="0"
 HAVE_OSX="0"

 case "${host_os}" in
   "")
     SYS=unknown
     ;;
   linux*)
     SYS=linux
     # Necessary for linking .a to a .so
     LDFLAGS+=" -Wl,-Bsymbolic"
     # Needed for plugin system
     LDFLAGS+=" -ldl"
     ;;
   darwin*)
     SYS=darwin

     AC_EGREP_CPP(yes,
             [#import <TargetConditionals.h>
              #if TARGET_OS_IPHONE
              yes
              #endif],
              [HAVE_IOS="1"],
              [HAVE_OSX="1"])
     ;;
   mingw32*)
     SYS=mingw32
     AC_CHECK_TOOL(WINDRES, windres, :)
     AC_CHECK_TOOL(OBJCOPY, objcopy, :)
     AH_TOP([#if defined(_WIN32) && !defined(_WIN32_WINNT)])
     AH_TOP([# define _WIN32_WINNT 0x0502 /* Windows XP SP2 */])
     AH_TOP([#endif])
     AC_DEFINE([_WIN32_IE], 0x0600, [Define to '0x0600' for IE 6.0 (and shell) APIs.])
     AC_DEFINE([_UNICODE], [1], [Define to 1 for Unicode (Wide Chars) APIs.])
     AC_DEFINE([UNICODE], [1], [Define to 1 for Unicode (Wide Chars) APIs.])
     AC_DEFINE([_ISOC99_SOURCE], [1], [Extensions to ISO C89 from ISO C99.])
     AC_DEFINE([_ISOC11_SOURCE], [1], [Extensions to ISO C99 from ISO C11.])
     AC_DEFINE([_POSIX_SOURCE], [1], [IEEE Std 1003.1.])
     AC_DEFINE([_POSIX_C_SOURCE], [200809L], [IEEE Std 1003.1.])
     AC_DEFINE([_XOPEN_SOURCE], [700], [POSIX and XPG 7th edition])
     AC_DEFINE([_XOPEN_SOURCE_EXTENDED], [1], [XPG things and X/Open Unix extensions.])
     AC_DEFINE([_BSD_SOURCE], [1], [ISO C, POSIX, and 4.3BSD things.])
     AC_DEFINE([_SVID_SOURCE], [1], [ISO C, POSIX, and SVID things.])

     LDFLAGS="${LDFLAGS} -Wl,--nxcompat -Wl,--no-seh -Wl,--dynamicbase"
     ac_default_prefix="`pwd`/_win32"
     DESTDIR="`pwd`/_win32/"
     AC_SUBST(WINDOWS_ARCH)
     AC_SUBST(PROGRAMFILES)
     ;;
   *)
     SYS="${host_os}"
     ;;
 esac
 AM_CONDITIONAL(HAVE_DARWIN,  test "${SYS}" = "darwin")
 AM_CONDITIONAL(HAVE_LINUX,   test "${SYS}" = "linux")
 AM_CONDITIONAL(HAVE_WIN32,   test "${SYS}" = "mingw32")
 AM_CONDITIONAL(HAVE_WIN64,   test "${HAVE_WIN64}" = "1")
 AM_CONDITIONAL(HAVE_OSX,   test "${HAVE_OSX}" = "1")

 dnl FIXME this should be deduced automatically
 AC_DEFINE_UNQUOTED([HAVE_COREAUDIO],
                     `if test "${HAVE_OSX}" = "1"; then echo 1; else echo 0; fi`,
                     [Define if you have CoreAudio])

 dnl Android is linux, but a bit different
 AS_IF([test "$SYS" = linux],[
     AC_MSG_CHECKING([for an Android system])
     AC_PREPROC_IFELSE([AC_LANG_PROGRAM(
         [[#ifndef __ANDROID__
          # error Not Android
          #endif
         ]],[[;]])
     ],[
       HAVE_ANDROID="1"
       AC_MSG_RESULT([yes])
     ],[
       AC_MSG_RESULT([no])
     ])
 ])
 AM_CONDITIONAL(HAVE_ANDROID, test "${HAVE_ANDROID}" = "1")

 dnl override platform specific check for dependent libraries
 dnl otherwise libtool linking of shared libraries will
 dnl fail on anything other than pass_all.
 AC_CACHE_VAL(lt_cv_deplibs_check_method,
     [lt_cv_deplibs_check_method=pass_all])

 LT_INIT([dlopen win32-dll shared disable-static])

 dnl Define C++ as default language
 LT_LANG(C++)

 DOLT

 lt_cv_deplibs_check_method=pass_all

 dnl Check for C++11 support
 AX_CXX_COMPILE_STDCXX_11([ext],[mandatory])

 dnl Check for header files
 AC_FUNC_ALLOCA
 AC_HEADER_STDC
 AC_CHECK_HEADERS([arpa/inet.h fcntl.h libintl.h limits.h \
                   netdb.h netinet/in.h stdlib.h string.h \
                   sys/ioctl.h sys/socket.h sys/time.h unistd.h])

 dnl Check for typedefs, structures, and compiler characteristics
 AC_HEADER_STAT
 AC_HEADER_STDBOOL
 AC_C_CONST
 AC_C_INLINE
 AC_TYPE_PID_T
 AC_TYPE_SIZE_T
 AC_HEADER_TIME
 AC_C_VOLATILE
 AC_CHECK_TYPES([ptrdiff_t])

 PKG_PROG_PKG_CONFIG()

 dnl On some OS we need static linking
 AS_IF([test -n "${PKG_CONFIG}" ],[
     AS_IF([test "${SYS}" = "mingw32" -o "${SYS}" = "darwin"],[
         PKG_CONFIG="${PKG_CONFIG} --static"
     ])
 ])

 dnl Check if we are using clang
 AC_MSG_CHECKING([if compiling with clang])
 AC_COMPILE_IFELSE(
 [AC_LANG_PROGRAM([], [[
 #ifndef __clang__
        not clang
 #endif
 ]])],
 [CLANG=yes], [CLANG=no])

 AC_MSG_RESULT([$CLANG])

 dnl
 dnl  Check for the contrib directory
 dnl
 AC_ARG_WITH(contrib,
   [AS_HELP_STRING([--with-contrib[=DIR]],
     [search for 3rd party libraries in DIR/include and DIR/lib])
 ])
 AC_MSG_CHECKING([for 3rd party libraries path])
 AS_IF([test -z "${with_contrib}" || test "${with_contrib}" = "yes"], [
   CONTRIB_DIR="${srcdir}/contrib/${host}"
   AS_IF([test ! -d "${CONTRIB_DIR}"], [
     echo "${CONTRIB_DIR} not found" >&AS_MESSAGE_LOG_FD
     CONTRIB_DIR="${srcdir}/contrib/`$CC -dumpmachine`"
     AS_IF([test ! -d "${CONTRIB_DIR}"], [
       echo "${CONTRIB_DIR} not found" >&AS_MESSAGE_LOG_FD
       CONTRIB_DIR=""
       AC_MSG_RESULT([not found])
     ])
   ])
 ], [
   AS_IF([test "${with_contrib}" != "no"], [
     CONTRIB_DIR="${with_contrib}"
   ], [
     CONTRIB_DIR=""
     AC_MSG_RESULT([disabled])
   ])
 ])

 AS_IF([test -n "${CONTRIB_DIR}"], [
   AS_IF([test -d "${CONTRIB_DIR}/lib"],[
     CONTRIB_DIR=`cd "${CONTRIB_DIR}" && pwd`
   ], [
     echo "${CONTRIB_DIR}/lib not found" >&AS_MESSAGE_LOG_FD
     CONTRIB_DIR=""
     AC_MSG_RESULT([not usable])
   ])
 ])

 AS_IF([test -n "${CONTRIB_DIR}"], [
   AC_MSG_RESULT([${CONTRIB_DIR}])
   export PATH=${CONTRIB_DIR}/bin:$PATH
   CPPFLAGS="${CPPFLAGS} -I${CONTRIB_DIR}/include"
   CFLAGS="${CFLAGS} -I${CONTRIB_DIR}/include"
   CXXFLAGS="${CXXFLAGS} -I${CONTRIB_DIR}/include"
   OBJCFLAGS="${OBJCFLAGS} -I${CONTRIB_DIR}/include"
   export PKG_CONFIG_PATH="${CONTRIB_DIR}/lib/pkgconfig:${CONTRIB_DIR}/lib64/pkgconfig:$PKG_CONFIG_PATH"
   LDFLAGS="${LDFLAGS} -L${CONTRIB_DIR}/lib"

   AS_IF([test "${SYS}" = "darwin"], [
     export LD_LIBRARY_PATH="${CONTRIB_DIR}/lib:$LD_LIBRARY_PATH"
     export DYLD_LIBRARY_PATH="${CONTRIB_DIR}/lib:$DYLD_LIBRARY_PATH"
   ])
 ], [
   AS_IF([test -n "${with_contrib}" && test "${with_contrib}" != "no"], [
     AC_MSG_ERROR([Third party libraries not found!])
   ])
 ])
 AC_SUBST(CONTRIB_DIR)

 dnl Add extras/tools to the PATH
 TOOLS_DIR="${srcdir}/extras/tools/build/bin"
 AS_IF([test -d "${TOOLS_DIR}"], [
   TOOLS_DIR=`cd "${TOOLS_DIR}" && pwd`
   export PATH="${TOOLS_DIR}":$PATH
 ])

 dnl Check for pjproject
 PKG_CHECK_MODULES(PJPROJECT, libpjproject,, AC_MSG_ERROR([Missing pjproject files]))

 PKG_CHECK_MODULES([YAMLCPP], [yaml-cpp >= 0.5.1],, AC_MSG_ERROR([yaml-cpp not found]))

 if test "${HAVE_ANDROID}" = "1"; then
     dnl Check for OpenSL
     AC_ARG_WITH([opensl],
                 AS_HELP_STRING([--without-opensl],
                                [Ignore presence of opensl and disable it]))

     AS_IF([test "x$with_opensl" != "xno"],
           [AC_CHECK_HEADER(["SLES/OpenSLES.h"],
                            [have_opensl=yes], [have_opensl=no])],
           [have_opensl=no])
     AC_DEFINE_UNQUOTED([HAVE_OPENSL],
                        `if test "x$have_opensl" = "xyes"; then echo 1; else echo 0; fi`,
                        [Define if you have OpenSL])
 fi
 AM_CONDITIONAL([BUILD_OPENSL], test "x$have_opensl" = "xyes")

 dnl Check for alsa development package - name: libasound2-dev
 ALSA_MIN_VERSION=1.0
 AC_ARG_WITH([alsa],
 	[AS_HELP_STRING([--without-alsa], [disable support for alsa])],
 	[],
 	[with_alsa=yes])
 AS_IF([test "x$with_alsa" = "xyes"], [
        PKG_CHECK_MODULES(ALSA, alsa >= ${ALSA_MIN_VERSION},, AC_MSG_ERROR([Missing alsa development files]))
 	]);

 AC_DEFINE_UNQUOTED([HAVE_ALSA], `if test "x$with_alsa" = "xyes"; then echo 1; else echo 0; fi`, [Define if you have alsa])
 AM_CONDITIONAL(BUILD_ALSA, test "x$with_alsa" = "xyes")


 dnl Check for pulseaudio development package - name: libpulse-dev
 LIBPULSE_MIN_VERSION=0.9.15
 AC_ARG_WITH([pulse],
     [AS_HELP_STRING([--without-pulse], [disable support for pulseaudio])],
     [],
     [with_pulse=yes])

 AS_IF([test "x$with_pulse" = "xyes"], [
        PKG_CHECK_MODULES(PULSEAUDIO, libpulse >= ${LIBPULSE_MIN_VERSION},, AC_MSG_ERROR([Missing pulseaudio development files]))
       ]);

 AC_DEFINE_UNQUOTED([HAVE_PULSE], `if test "x$with_pulse" = "xyes"; then echo 1; else echo 0; fi`, [Define if you have pulseaudio])
 AM_CONDITIONAL(BUILD_PULSE, test "x$with_pulse" = "xyes")

 AC_ARG_WITH([jack],
     AS_HELP_STRING([--without-jack], [Ignore presence of jack and disable it]))

 AS_IF([test "x$with_jack" != "xno"],
       [PKG_CHECK_MODULES(JACK, jack, [have_jack=yes], [have_jack=no])],
       [have_jack=no])

 AS_IF([test "x$have_jack" = "xyes"],,
       [AS_IF([test "x$with_jack" = "xyes"],
              [AC_MSG_ERROR([jack requested but not found])
       ])
 ])

 AC_DEFINE_UNQUOTED([HAVE_JACK], `if test "x$have_jack" = "xyes"; then echo 1; else echo 0; fi`, [Define if you have jack])
 AM_CONDITIONAL(BUILD_JACK, test "x$have_jack" = "xyes")

 dnl Check for the samplerate development package - name: libsamplerate0-dev
 LIBSAMPLERATE_MIN_VERSION=0.1.2
 PKG_CHECK_MODULES(SAMPLERATE, samplerate >= ${LIBSAMPLERATE_MIN_VERSION},, AC_MSG_ERROR([Missing libsamplerate development files]))

 dnl Check for the sndfile development package - name: libsndfile-dev
 PKG_CHECK_MODULES(SNDFILE, sndfile,, AC_MSG_ERROR([Missing sndfile development files]))

 dnl Coverage is default-disabled
 AC_ARG_ENABLE([coverage], AS_HELP_STRING([--enable-coverage], [Enable coverage]))

 AS_IF([test "x$enable_coverage" = "xyes"], [
         CXXFLAGS="${CXXFLAGS} --coverage"
         LDFLAGS="${LDFLAGS} --coverage"])

 # DBUSCPP
 dnl Check for dbuscpp, the C++ bindings for D-Bus
 AC_ARG_WITH([dbus],
     [AS_HELP_STRING([--without-dbus], [disable support for dbus])],
     [],
     [with_dbus=yes])
 AS_IF([test "x$with_dbus" = "xyes"], [
        PKG_CHECK_MODULES(DBUSCPP, dbus-c++-1,, AC_MSG_WARN([Missing dbus development files]))

        AS_AC_EXPAND(LIBEXECDIR, $libexecdir)
        AC_SUBST(LIBEXECDIR)

        AC_CONFIG_FILES([bin/dbus/Makefile
                         bin/dbus/cx.ring.Ring.service])

        AC_CHECK_PROG(HAVE_DBUSXML2CPP, dbusxx-xml2cpp, true, false)
        if test "x$HAVE_DBUSXML2CPP" = "xfalse"; then
            AC_MSG_ERROR([dbusxx-xml2cpp not found])
        fi

        AS_IF([test "x$CLANG" = "xyes"], [
              AC_MSG_ERROR([dbus does not compile when clang is used, rerun with --without-dbus])
        ]);

        AM_CONDITIONAL(RING_DBUS, true)],
        AM_CONDITIONAL(RING_DBUS, false));


 dnl Check for libav
 PKG_CHECK_MODULES(LIBAVCODEC, libavcodec >= 53.5.0,, AC_MSG_ERROR([Missing libavcodec development files]))
 LIBAVCODEC_CFLAGS="${LIBAVCODEC_CFLAGS} -D__STDC_CONSTANT_MACROS"

 PKG_CHECK_MODULES(LIBAVFORMAT, libavformat >= 54.20.3,, AC_MSG_ERROR([Missing libavformat development files]))

 PKG_CHECK_MODULES(LIBSWSCALE, libswscale >= 1.1.0,, AC_MSG_ERROR([Missing libswscale development files]))

 PKG_CHECK_MODULES(LIBAVDEVICE, libavdevice >= 53.0.0,, AC_MSG_ERROR([Missing libavdevice development files]))

 PKG_CHECK_MODULES(LIBAVUTIL, libavutil >= 52.5.0,, AC_MSG_ERROR([Missing libavutil development files]))

 dnl Video is default-enabled
 AC_ARG_ENABLE([video], AS_HELP_STRING([--disable-video], [Disable video]))

 AS_IF([test "x$enable_video" != "xno"],
       [
         AC_DEFINE(RING_VIDEO, [], [Video support enabled])
         AM_CONDITIONAL(RING_VIDEO, true)
         AS_IF([test "$SYS" = linux],[
             PKG_CHECK_MODULES(UDEV, libudev,, AC_MSG_ERROR([Missing libudev development files]))
         ],[
         ])
     ],
     [
      AM_CONDITIONAL(RING_VIDEO, false)
      ]);

 dnl TLS support is enabled if it's installed and up to date
 AC_ARG_WITH([tls],
   [AS_HELP_STRING([--with-tls],
     [support tls @<:@default=check@:>@])],
   [],
   [with_tls=check])
 AS_CASE(["$with_tls"],
   [yes], [PKG_CHECK_MODULES([GNUTLS], [gnutls >= 3.1], [HAVE_GNUTLS=1])],
   [no], [HAVE_GNUTLS=0],
   [PKG_CHECK_MODULES([GNUTLS], [gnutls >= 3.1], [HAVE_GNUTLS=1], [HAVE_GNUTLS=0])])

 AC_DEFINE_UNQUOTED([HAVE_TLS], `if test $HAVE_GNUTLS -eq 1; then echo 1; else echo 0; fi`, [Define if you have tls support])
 AM_CONDITIONAL(BUILD_TLS, test "$HAVE_GNUTLS" -eq 1)

 # Instant Messaging
 # required dependency(ies): libxpat
 AC_ARG_WITH([instant_messaging],
     [AS_HELP_STRING([--without-instant_messaging], [disable support for instant-messaging])],
     [],
     [with_instant_messaging=yes])
     AS_IF([test "x$with_instant_messaging" = "xyes"], [
         PKG_CHECK_MODULES([EXPAT], expat >= 2.0.0, [with_instant_messaging=yes],
            dnl Fallback to older version
            [with_instant_messaging=no])
     ]);

 AC_DEFINE_UNQUOTED([HAVE_INSTANT_MESSAGING], `if test "x$with_instant_messaging" = "xyes"; then echo 1; else echo 0; fi`, [Define if you have instant messaging support])
 AM_CONDITIONAL(BUILD_INSTANT_MESSAGING, test "x$with_instant_messaging" = "xyes" )


 # PTHREAD
 # required dependency(ies): libxpat
 AX_PTHREAD


 # SDES Key Exchange
 # required dependency(ies): libpcre
 AC_ARG_WITH([sdes],
     [AS_HELP_STRING([--without-sdes], [disable support for sdes key exchange])],
     [],
     [with_sdes=yes])
 AS_IF([test "x$with_sdes" = "xyes"], [
       PKG_CHECK_MODULES(PCRE, [libpcre],,AC_MSG_ERROR([libpcre not found]))]);

 AC_DEFINE_UNQUOTED([HAVE_SDES], `if test "x$with_sdes" = "xyes"; then echo 1; else echo 0; fi`, [Define if you have sdes support])
 AM_CONDITIONAL(BUILD_SDES, test "x$with_sdes" = "xyes" )


 dnl Check for libcppunit-dev
 CPPUNIT_MIN_VERSION=1.12
 PKG_CHECK_MODULES(CPPUNIT, cppunit >= ${CPPUNIT_MIN_VERSION}, AM_CONDITIONAL(BUILD_TEST, test 1 = 1 ), AM_CONDITIONAL(BUILD_TEST, test 0 = 1 ))


 # GSM CODEC
 # required dependency(ies): libgsm
 dnl check for libgsm1 (doesn't use pkg-config)
 dnl Check for libgsm
 AC_ARG_WITH([gsm], [AS_HELP_STRING([--without-gsm],
             [disable support for gsm codec])], [], [with_gsm=yes])

 LIBGSM=
 AS_IF([test "x$with_gsm" != xno],
         [AC_CHECK_HEADER([gsm/gsm.h], , AC_MSG_FAILURE([Unable to find the libgsm1 headers (you may need to install the dev package).  You may use --without-gsm to compile without gsm codec support.]))]
         [AC_CHECK_LIB([gsm], [gsm_decode], [], [
             AC_MSG_FAILURE([libgsm link test failed. You may use --without-gsm to compile without gsm codec support.])
         ])
     ])

 AC_DEFINE_UNQUOTED([HAVE_GSM], `if test "x$with_gsm" = "xyes"; then echo 1; else echo 0; fi`, [Define if you have libgsm])
 AM_CONDITIONAL(BUILD_GSM, test "x$with_gsm" = "xyes" )


 # SPEEX CODEC
 # required dependency(ies): libspeex
 dnl Check for libspeex
 AC_ARG_WITH([speex],
         [AS_HELP_STRING([--without-speex], [disable support for speex codec])],
         [],
         [with_speex=yes])

 AS_IF([test "x$with_speex" != xno], [PKG_CHECK_MODULES([SPEEX], [speex])])

 AC_DEFINE_UNQUOTED([HAVE_SPEEX], `if test "x$with_speex" = "xyes"; then echo 1; else echo 0; fi`, [Define if you have libspeex])
 AM_CONDITIONAL(BUILD_SPEEX, test "x$with_speex" = "xyes" )


 # SPEEX DSP
 # required dependency(ies): libspeexdsp
 dnl check in case the libspeexdsp is not installed
 AC_ARG_WITH([speexdsp],
     [AS_HELP_STRING([--without-speexdsp],
     [disable support for speexdp Noise Suppression and Automatic Gain Control])],
     [],
     [with_speexdsp=yes])

 AS_IF([test "x$with_speexdsp" != xno], [PKG_CHECK_MODULES([SPEEXDSP], [speexdsp])])

 AC_DEFINE_UNQUOTED([HAVE_SPEEXDSP], `if test "x$with_speexdsp" = "xyes"; then echo 1; else echo 0; fi`, [Define if you have libspeexdsp])
 AM_CONDITIONAL(BUILD_SPEEXDSP, test "x$with_speexdsp" = "xyes" )

 dnl iLBC is enabled if it's installed
 AC_ARG_WITH([libilbc],
   [AS_HELP_STRING([--with-libilbc],
     [support ilbc audio @<:@default=check@:>@])],
   [],
   [with_libilbc=check])
 AS_CASE(["$with_libilbc"],
   [yes], [PKG_CHECK_MODULES([libilbc], [libilbc], [HAVE_LIBILBC=1])],
   [no], [HAVE_LIBILBC=0],
   [PKG_CHECK_MODULES([libilbc], [libilbc], [HAVE_LIBILBC=1], [HAVE_LIBILBC=0])])
 AM_CONDITIONAL([BUILD_ILBC], [test "$HAVE_LIBILBC" -eq 1])

 dnl opus is enabled if it's installed
 AC_ARG_WITH([opus],
   [AS_HELP_STRING([--with-opus], [support opus audio @<:@default=check@:>@])], [], [with_opus=check])
 AS_CASE(["$with_opus"],
   [yes], [PKG_CHECK_MODULES([opus], [opus], [HAVE_OPUS=1])],
   [no], [HAVE_OPUS=0],
   [PKG_CHECK_MODULES([opus], [opus], [HAVE_OPUS=1], [HAVE_OPUS=0])])
 AM_CONDITIONAL([BUILD_OPUS], [test "$HAVE_OPUS" -eq 1])

 AC_ARG_WITH([iax],
     AS_HELP_STRING([--without-iax], [Ignore presence of iax and disable it]))

 AS_IF([test "x$with_iax" != "xno"],
       [AC_CHECK_HEADER("iax/iax-client.h", [have_iax=yes], [have_iax=no])],
       [have_iax=no])

 # only fail if IAX was explicitly requested but not found
 AS_IF([test "x$have_iax" = "xyes"],
       [AC_DEFINE([HAVE_IAX], 1, [Define if you have libiax])
        AM_CONDITIONAL(USE_IAX, `true`)],
       [AS_IF([test "x$with_iax" = "xyes"],
              [AC_MSG_ERROR([iax requested but not found])])
        AC_DEFINE([HAVE_IAX], 0, [Define if you have libiax])
        AM_CONDITIONAL(USE_IAX, `false`)])

 # dht is default-enabled, but requires gnutls
 AC_ARG_ENABLE([dht],
   AS_HELP_STRING([--disable-dht], [disable support for dht]))

 AS_IF([test "x$enable_dht" != "xno" -a "$HAVE_GNUTLS" -eq 1],
       [AC_DEFINE([HAVE_DHT], 1, [Define to enable dht])
        PKG_CHECK_MODULES([OPENDHT], opendht,
                          AC_DEFINE([HAVE_DHT], 1, [Define to enable dht])
                          AM_CONDITIONAL(USE_DHT, true),
                          AC_DEFINE([HAVE_DHT], 0, [Define to enable dht])
                          AM_CONDITIONAL(USE_DHT, false)
                          AC_MSG_WARN([Missing OpenDHT]))],
       [AC_DEFINE([HAVE_DHT], 0, [Define to enable dht])
        AM_CONDITIONAL(USE_DHT, false)])

 dnl IPv6 mode is default-disabled
 AC_ARG_ENABLE([ipv6], AS_HELP_STRING([--enable-ipv6], [Enable IPv6 support]))

 AC_DEFINE_UNQUOTED([HAVE_IPV6], `if test "x$enable_ipv6" = "xyes"; then echo 1; else echo 0; fi`, [Define if you have IPv6])
 AM_CONDITIONAL(BUILD_IPV6, test "x$enable_ipv6" = "xyes" )

 # LIBUPNP
 dnl check for libupnp
 AC_ARG_WITH([upnp], [AS_HELP_STRING([--without-upnp],
             [disable support for upnp])], [], [with_upnp=yes])

 AS_IF([test "x$with_upnp" = "xyes"],
       [PKG_CHECK_MODULES(LIBUPNP, [libupnp],
         [AC_DEFINE([HAVE_LIBUPNP], 1, [Define if you have libupnp])],
         [AC_MSG_WARN([Missing libupnp development files])
          AC_DEFINE([HAVE_LIBUPNP], 0, [Define if you have libupnp])])
       ])

 AC_DEFINE_UNQUOTED([HAVE_SHM], `if test -z "${HAVE_LINUX_TRUE}"; then echo 1; else echo 0; fi`,
 	[Define if you have shared memory support])

 # DOXYGEN
 # required dependency(ies): doxygen
 # check for doxygen, mostly stolen from http://log4cpp.sourceforge.net/
 # ----------------------------------------------------------------------------
 AC_DEFUN([BB_ENABLE_DOXYGEN],
     [
     AC_ARG_ENABLE(doxygen, [  --enable-doxygen        enable documentation generation with doxygen (disabled by default)])
     AC_ARG_ENABLE(dot, [  --enable-dot            use 'dot' to generate graphs in doxygen (auto)])
     if test "x$enable_doxygen" = xyes; then
         AC_PATH_PROG(DOXYGEN, doxygen, , $PATH)
         test x$DOXYGEN = x && AC_MSG_ERROR([could not find doxygen])
         AC_PATH_PROG(DOT, dot, , $PATH)
         test x$DOT = x -a "x$enable_dot" = xyes && AC_MSG_ERROR([could not find dot])
     fi
     AM_CONDITIONAL(ENABLE_DOXYGEN, test "x$DOXYGEN" != "x")
 ])

 # Actually perform the doxygen check
 BB_ENABLE_DOXYGEN


 dnl debug mode is default-disabled
 AC_ARG_ENABLE([debug], AS_HELP_STRING([--enable-debug], [Build in debug mode, adds stricter warnings, disables optimization]))

 AS_IF([test "x$enable_debug" = "xyes"],
       [CXXFLAGS="${CXXFLAGS} -g -Wall -Wextra -Wnon-virtual-dtor -O0"])

 dnl What Makefiles to generate

 #TODO: split this list across where the relevant check is performed
 AC_CONFIG_FILES([Makefile \
                  bin/Makefile \
                  src/Makefile \
                  src/sip/Makefile \
                  src/im/Makefile \
                  src/iax/Makefile \
                  src/ringdht/Makefile \
                  src/media/Makefile \
                  src/media/audio/Makefile \
                  src/media/audio/pulseaudio/Makefile \
                  src/media/audio/alsa/Makefile \
                  src/media/audio/opensl/Makefile \
                  src/media/audio/jack/Makefile \
                  src/media/audio/coreaudio/Makefile \
                  src/media/audio/sound/Makefile \
                  src/config/Makefile \
                  src/client/Makefile \
                  src/hooks/Makefile \
                  src/media/video/Makefile \
                  src/media/video/v4l2/Makefile \
                  src/media/video/osxvideo/Makefile \
                  src/media/video/test/Makefile \
                  src/upnp/Makefile \
                  test/Makefile \
                  ringtones/Makefile \
                  man/Makefile \
                  doc/Makefile \
                  doc/doxygen/Makefile])

 # Go!
 AC_OUTPUT
	dnl Ring - configure.ac for automake 1.9 and autoconf 2.59

	dnl Process this file with autoconf to produce a configure script.
	AC_PREREQ([2.65])
	AC_INIT([Ring],[2.0.1],[ring@lists.savoirfairelinux.net],[ring])

	AC_COPYRIGHT([[Copyright (c) Savoir-Faire Linux 2004-2015]])
	AC_REVISION([$Revision$])

	dnl Where to find configure files
	AC_CONFIG_SRCDIR(src/ring_api.cpp)
	AC_CONFIG_AUX_DIR([build-aux])
	AC_CONFIG_MACRO_DIR([m4])
	AC_CANONICAL_BUILD
	AC_CANONICAL_HOST

	AM_INIT_AUTOMAKE([-Wno-portability])
	m4_ifdef([AM_PROG_AR], [AM_PROG_AR]) # required by automake 1.12
	AC_CONFIG_HEADERS([config.h])

	# Silent build by default. Use make V=1 to increase verbosity
	m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])

	dnl Check for programs
	AC_PROG_CC
	AC_PROG_CXX
	AC_PROG_OBJCXX
	AC_PROG_CPP
	AC_PROG_INSTALL
	AC_PROG_LN_S
	AC_PROG_MAKE_SET

	dnl
	dnl Check the operating system
	dnl
	HAVE_WIN64="0"
	HAVE_IOS="0"
	HAVE_OSX="0"

	case "${host_os}" in
	"")
	SYS=unknown
	;;
	linux*)
	SYS=linux
	# Necessary for linking .a to a .so
	LDFLAGS+=" -Wl,-Bsymbolic"
	# Needed for plugin system
	LDFLAGS+=" -ldl"
	;;
	darwin*)
	SYS=darwin

	AC_EGREP_CPP(yes,
	[#import <TargetConditionals.h>
	#if TARGET_OS_IPHONE
	yes
	#endif],
	[HAVE_IOS="1"],
	[HAVE_OSX="1"])
	;;
	mingw32*)
	SYS=mingw32
	AC_CHECK_TOOL(WINDRES, windres, :)
	AC_CHECK_TOOL(OBJCOPY, objcopy, :)
	AH_TOP([#if defined(_WIN32) && !defined(_WIN32_WINNT)])
	AH_TOP([# define _WIN32_WINNT 0x0502 /* Windows XP SP2 */])
	AH_TOP([#endif])
	AC_DEFINE([_WIN32_IE], 0x0600, [Define to '0x0600' for IE 6.0 (and shell) APIs.])
	AC_DEFINE([_UNICODE], [1], [Define to 1 for Unicode (Wide Chars) APIs.])
	AC_DEFINE([UNICODE], [1], [Define to 1 for Unicode (Wide Chars) APIs.])
	AC_DEFINE([_ISOC99_SOURCE], [1], [Extensions to ISO C89 from ISO C99.])
	AC_DEFINE([_ISOC11_SOURCE], [1], [Extensions to ISO C99 from ISO C11.])
	AC_DEFINE([_POSIX_SOURCE], [1], [IEEE Std 1003.1.])
	AC_DEFINE([_POSIX_C_SOURCE], [200809L], [IEEE Std 1003.1.])
	AC_DEFINE([_XOPEN_SOURCE], [700], [POSIX and XPG 7th edition])
	AC_DEFINE([_XOPEN_SOURCE_EXTENDED], [1], [XPG things and X/Open Unix extensions.])
	AC_DEFINE([_BSD_SOURCE], [1], [ISO C, POSIX, and 4.3BSD things.])
	AC_DEFINE([_SVID_SOURCE], [1], [ISO C, POSIX, and SVID things.])

	LDFLAGS="${LDFLAGS} -Wl,--nxcompat -Wl,--no-seh -Wl,--dynamicbase"
	ac_default_prefix="`pwd`/_win32"
	DESTDIR="`pwd`/_win32/"
	AC_SUBST(WINDOWS_ARCH)
	AC_SUBST(PROGRAMFILES)
	;;
	*)
	SYS="${host_os}"
	;;
	esac
	AM_CONDITIONAL(HAVE_DARWIN, test "${SYS}" = "darwin")
	AM_CONDITIONAL(HAVE_LINUX, test "${SYS}" = "linux")
	AM_CONDITIONAL(HAVE_WIN32, test "${SYS}" = "mingw32")
	AM_CONDITIONAL(HAVE_WIN64, test "${HAVE_WIN64}" = "1")
	AM_CONDITIONAL(HAVE_OSX, test "${HAVE_OSX}" = "1")

	dnl FIXME this should be deduced automatically
	AC_DEFINE_UNQUOTED([HAVE_COREAUDIO],
	`if test "${HAVE_OSX}" = "1"; then echo 1; else echo 0; fi`,
	[Define if you have CoreAudio])

	dnl Android is linux, but a bit different
	AS_IF([test "$SYS" = linux],[
	AC_MSG_CHECKING([for an Android system])
	AC_PREPROC_IFELSE([AC_LANG_PROGRAM(
	[[#ifndef __ANDROID__
	# error Not Android
	#endif
	]],[[;]])
	],[
	HAVE_ANDROID="1"
	AC_MSG_RESULT([yes])
	],[
	AC_MSG_RESULT([no])
	])
	])
	AM_CONDITIONAL(HAVE_ANDROID, test "${HAVE_ANDROID}" = "1")

	dnl override platform specific check for dependent libraries
	dnl otherwise libtool linking of shared libraries will
	dnl fail on anything other than pass_all.
	AC_CACHE_VAL(lt_cv_deplibs_check_method,
	[lt_cv_deplibs_check_method=pass_all])

	LT_INIT([dlopen win32-dll shared disable-static])

	dnl Define C++ as default language
	LT_LANG(C++)

	DOLT

	lt_cv_deplibs_check_method=pass_all

	dnl Check for C++11 support
	AX_CXX_COMPILE_STDCXX_11([ext],[mandatory])

	dnl Check for header files
	AC_FUNC_ALLOCA
	AC_HEADER_STDC
	AC_CHECK_HEADERS([arpa/inet.h fcntl.h libintl.h limits.h \
	netdb.h netinet/in.h stdlib.h string.h \
	sys/ioctl.h sys/socket.h sys/time.h unistd.h])

	dnl Check for typedefs, structures, and compiler characteristics
	AC_HEADER_STAT
	AC_HEADER_STDBOOL
	AC_C_CONST
	AC_C_INLINE
	AC_TYPE_PID_T
	AC_TYPE_SIZE_T
	AC_HEADER_TIME
	AC_C_VOLATILE
	AC_CHECK_TYPES([ptrdiff_t])

	PKG_PROG_PKG_CONFIG()

	dnl On some OS we need static linking
	AS_IF([test -n "${PKG_CONFIG}" ],[
	AS_IF([test "${SYS}" = "mingw32" -o "${SYS}" = "darwin"],[
	PKG_CONFIG="${PKG_CONFIG} --static"
	])
	])

	dnl Check if we are using clang
	AC_MSG_CHECKING([if compiling with clang])
	AC_COMPILE_IFELSE(
	[AC_LANG_PROGRAM([], [[
	#ifndef __clang__
	not clang
	#endif
	]])],
	[CLANG=yes], [CLANG=no])

	AC_MSG_RESULT([$CLANG])

	dnl
	dnl Check for the contrib directory
	dnl
	AC_ARG_WITH(contrib,
	[AS_HELP_STRING([--with-contrib[=DIR]],
	[search for 3rd party libraries in DIR/include and DIR/lib])
	])
	AC_MSG_CHECKING([for 3rd party libraries path])
	AS_IF([test -z "${with_contrib}" \|\| test "${with_contrib}" = "yes"], [
	CONTRIB_DIR="${srcdir}/contrib/${host}"
	AS_IF([test ! -d "${CONTRIB_DIR}"], [
	echo "${CONTRIB_DIR} not found" >&AS_MESSAGE_LOG_FD
	CONTRIB_DIR="${srcdir}/contrib/`$CC -dumpmachine`"
	AS_IF([test ! -d "${CONTRIB_DIR}"], [
	echo "${CONTRIB_DIR} not found" >&AS_MESSAGE_LOG_FD
	CONTRIB_DIR=""
	AC_MSG_RESULT([not found])
	])
	])
	], [
	AS_IF([test "${with_contrib}" != "no"], [
	CONTRIB_DIR="${with_contrib}"
	], [
	CONTRIB_DIR=""
	AC_MSG_RESULT([disabled])
	])
	])

	AS_IF([test -n "${CONTRIB_DIR}"], [
	AS_IF([test -d "${CONTRIB_DIR}/lib"],[
	CONTRIB_DIR=`cd "${CONTRIB_DIR}" && pwd`
	], [
	echo "${CONTRIB_DIR}/lib not found" >&AS_MESSAGE_LOG_FD
	CONTRIB_DIR=""
	AC_MSG_RESULT([not usable])
	])
	])

	AS_IF([test -n "${CONTRIB_DIR}"], [
	AC_MSG_RESULT([${CONTRIB_DIR}])
	export PATH=${CONTRIB_DIR}/bin:$PATH
	CPPFLAGS="${CPPFLAGS} -I${CONTRIB_DIR}/include"
	CFLAGS="${CFLAGS} -I${CONTRIB_DIR}/include"
	CXXFLAGS="${CXXFLAGS} -I${CONTRIB_DIR}/include"
	OBJCFLAGS="${OBJCFLAGS} -I${CONTRIB_DIR}/include"
	export PKG_CONFIG_PATH="${CONTRIB_DIR}/lib/pkgconfig:${CONTRIB_DIR}/lib64/pkgconfig:$PKG_CONFIG_PATH"
	LDFLAGS="${LDFLAGS} -L${CONTRIB_DIR}/lib"

	AS_IF([test "${SYS}" = "darwin"], [
	export LD_LIBRARY_PATH="${CONTRIB_DIR}/lib:$LD_LIBRARY_PATH"
	export DYLD_LIBRARY_PATH="${CONTRIB_DIR}/lib:$DYLD_LIBRARY_PATH"
	])
	], [
	AS_IF([test -n "${with_contrib}" && test "${with_contrib}" != "no"], [
	AC_MSG_ERROR([Third party libraries not found!])
	])
	])
	AC_SUBST(CONTRIB_DIR)

	dnl Add extras/tools to the PATH
	TOOLS_DIR="${srcdir}/extras/tools/build/bin"
	AS_IF([test -d "${TOOLS_DIR}"], [
	TOOLS_DIR=`cd "${TOOLS_DIR}" && pwd`
	export PATH="${TOOLS_DIR}":$PATH
	])

	dnl Check for pjproject
	PKG_CHECK_MODULES(PJPROJECT, libpjproject,, AC_MSG_ERROR([Missing pjproject files]))

	PKG_CHECK_MODULES([YAMLCPP], [yaml-cpp >= 0.5.1],, AC_MSG_ERROR([yaml-cpp not found]))

	if test "${HAVE_ANDROID}" = "1"; then
	dnl Check for OpenSL
	AC_ARG_WITH([opensl],
	AS_HELP_STRING([--without-opensl],
	[Ignore presence of opensl and disable it]))

	AS_IF([test "x$with_opensl" != "xno"],
	[AC_CHECK_HEADER(["SLES/OpenSLES.h"],
	[have_opensl=yes], [have_opensl=no])],
	[have_opensl=no])
	AC_DEFINE_UNQUOTED([HAVE_OPENSL],
	`if test "x$have_opensl" = "xyes"; then echo 1; else echo 0; fi`,
	[Define if you have OpenSL])
	fi
	AM_CONDITIONAL([BUILD_OPENSL], test "x$have_opensl" = "xyes")

	dnl Check for alsa development package - name: libasound2-dev
	ALSA_MIN_VERSION=1.0
	AC_ARG_WITH([alsa],
	[AS_HELP_STRING([--without-alsa], [disable support for alsa])],
	[],
	[with_alsa=yes])
	AS_IF([test "x$with_alsa" = "xyes"], [
	PKG_CHECK_MODULES(ALSA, alsa >= ${ALSA_MIN_VERSION},, AC_MSG_ERROR([Missing alsa development files]))
	]);

	AC_DEFINE_UNQUOTED([HAVE_ALSA], `if test "x$with_alsa" = "xyes"; then echo 1; else echo 0; fi`, [Define if you have alsa])
	AM_CONDITIONAL(BUILD_ALSA, test "x$with_alsa" = "xyes")


	dnl Check for pulseaudio development package - name: libpulse-dev
	LIBPULSE_MIN_VERSION=0.9.15
	AC_ARG_WITH([pulse],
	[AS_HELP_STRING([--without-pulse], [disable support for pulseaudio])],
	[],
	[with_pulse=yes])

	AS_IF([test "x$with_pulse" = "xyes"], [
	PKG_CHECK_MODULES(PULSEAUDIO, libpulse >= ${LIBPULSE_MIN_VERSION},, AC_MSG_ERROR([Missing pulseaudio development files]))
	]);

	AC_DEFINE_UNQUOTED([HAVE_PULSE], `if test "x$with_pulse" = "xyes"; then echo 1; else echo 0; fi`, [Define if you have pulseaudio])
	AM_CONDITIONAL(BUILD_PULSE, test "x$with_pulse" = "xyes")

	AC_ARG_WITH([jack],
	AS_HELP_STRING([--without-jack], [Ignore presence of jack and disable it]))

	AS_IF([test "x$with_jack" != "xno"],
	[PKG_CHECK_MODULES(JACK, jack, [have_jack=yes], [have_jack=no])],
	[have_jack=no])

	AS_IF([test "x$have_jack" = "xyes"],,
	[AS_IF([test "x$with_jack" = "xyes"],
	[AC_MSG_ERROR([jack requested but not found])
	])
	])

	AC_DEFINE_UNQUOTED([HAVE_JACK], `if test "x$have_jack" = "xyes"; then echo 1; else echo 0; fi`, [Define if you have jack])
	AM_CONDITIONAL(BUILD_JACK, test "x$have_jack" = "xyes")

	dnl Check for the samplerate development package - name: libsamplerate0-dev
	LIBSAMPLERATE_MIN_VERSION=0.1.2
	PKG_CHECK_MODULES(SAMPLERATE, samplerate >= ${LIBSAMPLERATE_MIN_VERSION},, AC_MSG_ERROR([Missing libsamplerate development files]))

	dnl Check for the sndfile development package - name: libsndfile-dev
	PKG_CHECK_MODULES(SNDFILE, sndfile,, AC_MSG_ERROR([Missing sndfile development files]))

	dnl Coverage is default-disabled
	AC_ARG_ENABLE([coverage], AS_HELP_STRING([--enable-coverage], [Enable coverage]))

	AS_IF([test "x$enable_coverage" = "xyes"], [
	CXXFLAGS="${CXXFLAGS} --coverage"
	LDFLAGS="${LDFLAGS} --coverage"])

	# DBUSCPP
	dnl Check for dbuscpp, the C++ bindings for D-Bus
	AC_ARG_WITH([dbus],
	[AS_HELP_STRING([--without-dbus], [disable support for dbus])],
	[],
	[with_dbus=yes])
	AS_IF([test "x$with_dbus" = "xyes"], [
	PKG_CHECK_MODULES(DBUSCPP, dbus-c++-1,, AC_MSG_WARN([Missing dbus development files]))

	AS_AC_EXPAND(LIBEXECDIR, $libexecdir)
	AC_SUBST(LIBEXECDIR)

	AC_CONFIG_FILES([bin/dbus/Makefile
	bin/dbus/cx.ring.Ring.service])

	AC_CHECK_PROG(HAVE_DBUSXML2CPP, dbusxx-xml2cpp, true, false)
	if test "x$HAVE_DBUSXML2CPP" = "xfalse"; then
	AC_MSG_ERROR([dbusxx-xml2cpp not found])
	fi

	AS_IF([test "x$CLANG" = "xyes"], [
	AC_MSG_ERROR([dbus does not compile when clang is used, rerun with --without-dbus])
	]);

	AM_CONDITIONAL(RING_DBUS, true)],
	AM_CONDITIONAL(RING_DBUS, false));


	dnl Check for libav
	PKG_CHECK_MODULES(LIBAVCODEC, libavcodec >= 53.5.0,, AC_MSG_ERROR([Missing libavcodec development files]))
	LIBAVCODEC_CFLAGS="${LIBAVCODEC_CFLAGS} -D__STDC_CONSTANT_MACROS"

	PKG_CHECK_MODULES(LIBAVFORMAT, libavformat >= 54.20.3,, AC_MSG_ERROR([Missing libavformat development files]))

	PKG_CHECK_MODULES(LIBSWSCALE, libswscale >= 1.1.0,, AC_MSG_ERROR([Missing libswscale development files]))

	PKG_CHECK_MODULES(LIBAVDEVICE, libavdevice >= 53.0.0,, AC_MSG_ERROR([Missing libavdevice development files]))

	PKG_CHECK_MODULES(LIBAVUTIL, libavutil >= 52.5.0,, AC_MSG_ERROR([Missing libavutil development files]))

	dnl Video is default-enabled
	AC_ARG_ENABLE([video], AS_HELP_STRING([--disable-video], [Disable video]))

	AS_IF([test "x$enable_video" != "xno"],
	[
	AC_DEFINE(RING_VIDEO, [], [Video support enabled])
	AM_CONDITIONAL(RING_VIDEO, true)
	AS_IF([test "$SYS" = linux],[
	PKG_CHECK_MODULES(UDEV, libudev,, AC_MSG_ERROR([Missing libudev development files]))
	],[
	])
	],
	[
	AM_CONDITIONAL(RING_VIDEO, false)
	]);

	dnl TLS support is enabled if it's installed and up to date
	AC_ARG_WITH([tls],
	[AS_HELP_STRING([--with-tls],
	[support tls @<:@default=check@:>@])],
	[],
	[with_tls=check])
	AS_CASE(["$with_tls"],
	[yes], [PKG_CHECK_MODULES([GNUTLS], [gnutls >= 3.1], [HAVE_GNUTLS=1])],
	[no], [HAVE_GNUTLS=0],
	[PKG_CHECK_MODULES([GNUTLS], [gnutls >= 3.1], [HAVE_GNUTLS=1], [HAVE_GNUTLS=0])])

	AC_DEFINE_UNQUOTED([HAVE_TLS], `if test $HAVE_GNUTLS -eq 1; then echo 1; else echo 0; fi`, [Define if you have tls support])
	AM_CONDITIONAL(BUILD_TLS, test "$HAVE_GNUTLS" -eq 1)

	# Instant Messaging
	# required dependency(ies): libxpat
	AC_ARG_WITH([instant_messaging],
	[AS_HELP_STRING([--without-instant_messaging], [disable support for instant-messaging])],
	[],
	[with_instant_messaging=yes])
	AS_IF([test "x$with_instant_messaging" = "xyes"], [
	PKG_CHECK_MODULES([EXPAT], expat >= 2.0.0, [with_instant_messaging=yes],
	dnl Fallback to older version
	[with_instant_messaging=no])
	]);

	AC_DEFINE_UNQUOTED([HAVE_INSTANT_MESSAGING], `if test "x$with_instant_messaging" = "xyes"; then echo 1; else echo 0; fi`, [Define if you have instant messaging support])
	AM_CONDITIONAL(BUILD_INSTANT_MESSAGING, test "x$with_instant_messaging" = "xyes" )


	# PTHREAD
	# required dependency(ies): libxpat
	AX_PTHREAD


	# SDES Key Exchange
	# required dependency(ies): libpcre
	AC_ARG_WITH([sdes],
	[AS_HELP_STRING([--without-sdes], [disable support for sdes key exchange])],
	[],
	[with_sdes=yes])
	AS_IF([test "x$with_sdes" = "xyes"], [
	PKG_CHECK_MODULES(PCRE, [libpcre],,AC_MSG_ERROR([libpcre not found]))]);

	AC_DEFINE_UNQUOTED([HAVE_SDES], `if test "x$with_sdes" = "xyes"; then echo 1; else echo 0; fi`, [Define if you have sdes support])
	AM_CONDITIONAL(BUILD_SDES, test "x$with_sdes" = "xyes" )


	dnl Check for libcppunit-dev
	CPPUNIT_MIN_VERSION=1.12
	PKG_CHECK_MODULES(CPPUNIT, cppunit >= ${CPPUNIT_MIN_VERSION}, AM_CONDITIONAL(BUILD_TEST, test 1 = 1 ), AM_CONDITIONAL(BUILD_TEST, test 0 = 1 ))


	# GSM CODEC
	# required dependency(ies): libgsm
	dnl check for libgsm1 (doesn't use pkg-config)
	dnl Check for libgsm
	AC_ARG_WITH([gsm], [AS_HELP_STRING([--without-gsm],
	[disable support for gsm codec])], [], [with_gsm=yes])

	LIBGSM=
	AS_IF([test "x$with_gsm" != xno],
	[AC_CHECK_HEADER([gsm/gsm.h], , AC_MSG_FAILURE([Unable to find the libgsm1 headers (you may need to install the dev package). You may use --without-gsm to compile without gsm codec support.]))]
	[AC_CHECK_LIB([gsm], [gsm_decode], [], [
	AC_MSG_FAILURE([libgsm link test failed. You may use --without-gsm to compile without gsm codec support.])
	])
	])

	AC_DEFINE_UNQUOTED([HAVE_GSM], `if test "x$with_gsm" = "xyes"; then echo 1; else echo 0; fi`, [Define if you have libgsm])
	AM_CONDITIONAL(BUILD_GSM, test "x$with_gsm" = "xyes" )


	# SPEEX CODEC
	# required dependency(ies): libspeex
	dnl Check for libspeex
	AC_ARG_WITH([speex],
	[AS_HELP_STRING([--without-speex], [disable support for speex codec])],
	[],
	[with_speex=yes])

	AS_IF([test "x$with_speex" != xno], [PKG_CHECK_MODULES([SPEEX], [speex])])

	AC_DEFINE_UNQUOTED([HAVE_SPEEX], `if test "x$with_speex" = "xyes"; then echo 1; else echo 0; fi`, [Define if you have libspeex])
	AM_CONDITIONAL(BUILD_SPEEX, test "x$with_speex" = "xyes" )


	# SPEEX DSP
	# required dependency(ies): libspeexdsp
	dnl check in case the libspeexdsp is not installed
	AC_ARG_WITH([speexdsp],
	[AS_HELP_STRING([--without-speexdsp],
	[disable support for speexdp Noise Suppression and Automatic Gain Control])],
	[],
	[with_speexdsp=yes])

	AS_IF([test "x$with_speexdsp" != xno], [PKG_CHECK_MODULES([SPEEXDSP], [speexdsp])])

	AC_DEFINE_UNQUOTED([HAVE_SPEEXDSP], `if test "x$with_speexdsp" = "xyes"; then echo 1; else echo 0; fi`, [Define if you have libspeexdsp])
	AM_CONDITIONAL(BUILD_SPEEXDSP, test "x$with_speexdsp" = "xyes" )

	dnl iLBC is enabled if it's installed
	AC_ARG_WITH([libilbc],
	[AS_HELP_STRING([--with-libilbc],
	[support ilbc audio @<:@default=check@:>@])],
	[],
	[with_libilbc=check])
	AS_CASE(["$with_libilbc"],
	[yes], [PKG_CHECK_MODULES([libilbc], [libilbc], [HAVE_LIBILBC=1])],
	[no], [HAVE_LIBILBC=0],
	[PKG_CHECK_MODULES([libilbc], [libilbc], [HAVE_LIBILBC=1], [HAVE_LIBILBC=0])])
	AM_CONDITIONAL([BUILD_ILBC], [test "$HAVE_LIBILBC" -eq 1])

	dnl opus is enabled if it's installed
	AC_ARG_WITH([opus],
	[AS_HELP_STRING([--with-opus], [support opus audio @<:@default=check@:>@])], [], [with_opus=check])
	AS_CASE(["$with_opus"],
	[yes], [PKG_CHECK_MODULES([opus], [opus], [HAVE_OPUS=1])],
	[no], [HAVE_OPUS=0],
	[PKG_CHECK_MODULES([opus], [opus], [HAVE_OPUS=1], [HAVE_OPUS=0])])
	AM_CONDITIONAL([BUILD_OPUS], [test "$HAVE_OPUS" -eq 1])

	AC_ARG_WITH([iax],
	AS_HELP_STRING([--without-iax], [Ignore presence of iax and disable it]))

	AS_IF([test "x$with_iax" != "xno"],
	[AC_CHECK_HEADER("iax/iax-client.h", [have_iax=yes], [have_iax=no])],
	[have_iax=no])

	# only fail if IAX was explicitly requested but not found
	AS_IF([test "x$have_iax" = "xyes"],
	[AC_DEFINE([HAVE_IAX], 1, [Define if you have libiax])
	AM_CONDITIONAL(USE_IAX, `true`)],
	[AS_IF([test "x$with_iax" = "xyes"],
	[AC_MSG_ERROR([iax requested but not found])])
	AC_DEFINE([HAVE_IAX], 0, [Define if you have libiax])
	AM_CONDITIONAL(USE_IAX, `false`)])

	# dht is default-enabled, but requires gnutls
	AC_ARG_ENABLE([dht],
	AS_HELP_STRING([--disable-dht], [disable support for dht]))

	AS_IF([test "x$enable_dht" != "xno" -a "$HAVE_GNUTLS" -eq 1],
	[AC_DEFINE([HAVE_DHT], 1, [Define to enable dht])
	PKG_CHECK_MODULES([OPENDHT], opendht,
	AC_DEFINE([HAVE_DHT], 1, [Define to enable dht])
	AM_CONDITIONAL(USE_DHT, true),
	AC_DEFINE([HAVE_DHT], 0, [Define to enable dht])
	AM_CONDITIONAL(USE_DHT, false)
	AC_MSG_WARN([Missing OpenDHT]))],
	[AC_DEFINE([HAVE_DHT], 0, [Define to enable dht])
	AM_CONDITIONAL(USE_DHT, false)])

	dnl IPv6 mode is default-disabled
	AC_ARG_ENABLE([ipv6], AS_HELP_STRING([--enable-ipv6], [Enable IPv6 support]))

	AC_DEFINE_UNQUOTED([HAVE_IPV6], `if test "x$enable_ipv6" = "xyes"; then echo 1; else echo 0; fi`, [Define if you have IPv6])
	AM_CONDITIONAL(BUILD_IPV6, test "x$enable_ipv6" = "xyes" )

	# LIBUPNP
	dnl check for libupnp
	AC_ARG_WITH([upnp], [AS_HELP_STRING([--without-upnp],
	[disable support for upnp])], [], [with_upnp=yes])

	AS_IF([test "x$with_upnp" = "xyes"],
	[PKG_CHECK_MODULES(LIBUPNP, [libupnp],
	[AC_DEFINE([HAVE_LIBUPNP], 1, [Define if you have libupnp])],
	[AC_MSG_WARN([Missing libupnp development files])
	AC_DEFINE([HAVE_LIBUPNP], 0, [Define if you have libupnp])])
	])

	AC_DEFINE_UNQUOTED([HAVE_SHM], `if test -z "${HAVE_LINUX_TRUE}"; then echo 1; else echo 0; fi`,
	[Define if you have shared memory support])

	# DOXYGEN
	# required dependency(ies): doxygen
	# check for doxygen, mostly stolen from http://log4cpp.sourceforge.net/
	# ----------------------------------------------------------------------------
	AC_DEFUN([BB_ENABLE_DOXYGEN],
	[
	AC_ARG_ENABLE(doxygen, [ --enable-doxygen enable documentation generation with doxygen (disabled by default)])
	AC_ARG_ENABLE(dot, [ --enable-dot use 'dot' to generate graphs in doxygen (auto)])
	if test "x$enable_doxygen" = xyes; then
	AC_PATH_PROG(DOXYGEN, doxygen, , $PATH)
	test x$DOXYGEN = x && AC_MSG_ERROR([could not find doxygen])
	AC_PATH_PROG(DOT, dot, , $PATH)
	test x$DOT = x -a "x$enable_dot" = xyes && AC_MSG_ERROR([could not find dot])
	fi
	AM_CONDITIONAL(ENABLE_DOXYGEN, test "x$DOXYGEN" != "x")
	])

	# Actually perform the doxygen check
	BB_ENABLE_DOXYGEN


	dnl debug mode is default-disabled
	AC_ARG_ENABLE([debug], AS_HELP_STRING([--enable-debug], [Build in debug mode, adds stricter warnings, disables optimization]))

	AS_IF([test "x$enable_debug" = "xyes"],
	[CXXFLAGS="${CXXFLAGS} -g -Wall -Wextra -Wnon-virtual-dtor -O0"])

	dnl What Makefiles to generate

	#TODO: split this list across where the relevant check is performed
	AC_CONFIG_FILES([Makefile \
	bin/Makefile \
	src/Makefile \
	src/sip/Makefile \
	src/im/Makefile \
	src/iax/Makefile \
	src/ringdht/Makefile \
	src/media/Makefile \
	src/media/audio/Makefile \
	src/media/audio/pulseaudio/Makefile \
	src/media/audio/alsa/Makefile \
	src/media/audio/opensl/Makefile \
	src/media/audio/jack/Makefile \
	src/media/audio/coreaudio/Makefile \
	src/media/audio/sound/Makefile \
	src/config/Makefile \
	src/client/Makefile \
	src/hooks/Makefile \
	src/media/video/Makefile \
	src/media/video/v4l2/Makefile \
	src/media/video/osxvideo/Makefile \
	src/media/video/test/Makefile \
	src/upnp/Makefile \
	test/Makefile \
	ringtones/Makefile \
	man/Makefile \
	doc/Makefile \
	doc/doxygen/Makefile])

	# Go!
	AC_OUTPUT