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

AC_PREREQ([2.68])
AC_INIT([butt], [1.45.0], [BUG-REPORT-ADDRESS])
AM_INIT_AUTOMAKE([subdir-objects foreign])
AC_CANONICAL_HOST

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

#predefined CXXFLAGS so AC_PROG_CXX does not add the -g flag
CXXFLAGS="$CXXFLAGS -O2"

# Compile with address sanitizer
# CXXFLAGS="$CXXFLAGS -O2 -g -fsanitize=address"

# Checks for programs.
AC_PROG_CXX
AC_PROG_CC
AC_PROG_OBJC

LDFLAGS="$LDFLAGS -L/usr/local/lib"

# Compile with address sanitizer
#LDFLAGS="$LDFLAGS -L/usr/local/lib -fsanitize=address"


AC_ARG_WITH([radioco],
    AS_HELP_STRING([--with-radioco], [Include support for Radio.co]))

AC_ARG_WITH([client],
    AS_HELP_STRING([--with-client], [Build butt and butt-client]),
    [with_client=yes],
    []
    )

AC_ARG_WITH([butt],
    AS_HELP_STRING([--without-butt], [Build only butt-client]),
    [client_only=yes],
    [], 
    )

AC_ARG_ENABLE([aac],
    AS_HELP_STRING([--disable-aac], [Disable aac support]))


AS_IF([test "x$with_radioco" = "xyes"], 
      [
       AC_DEFINE([WITH_RADIOCO], [1], [Enable support for Radio.co authentification])
       ])

AS_IF([test "x$client_only" = "xyes"], 
      [
       AC_DEFINE([CLIENT_ONLY], [1], [build only butt-client])
       ])

AS_IF([test "x$with_client" = "xyes"], 
      [
       AC_DEFINE([WITH_CLIENT], [1], [build butt and butt-client])
       ])

AS_IF([test "x$client_only" != "xyes"], 
[
# Checks for libraries.
AC_CHECK_LIB([ogg], [ogg_stream_init], [],
		[AC_MSG_ERROR([**** Could not find libogg     ****])]
	    )
AC_CHECK_LIB([vorbis], [vorbis_info_init], [],
		[AC_MSG_ERROR([**** Could not find libvorbis     ****])]
	    )
AC_CHECK_LIB([vorbisenc], [vorbis_encode_init], [],
		[AC_MSG_ERROR([**** Could not find libvorbisenc     ****])]
	    )
AC_CHECK_LIB([opus], [opus_encoder_create], [],
		[AC_MSG_ERROR([**** Could not find libopus     ****])]
	    )
AC_CHECK_LIB([mp3lame], [lame_init], [],
		[AC_MSG_ERROR([**** Could not find libmp3lame     ****])]

		)
AC_CHECK_LIB([FLAC], [FLAC__stream_encoder_new], [],
		[AC_MSG_ERROR([**** Could not find libFLAC     ****])]
		)
AC_CHECK_LIB([portaudio], [Pa_Initialize], [],
		[AC_MSG_ERROR([**** Could not find libportaudio     ****])]
	    )
AC_CHECK_LIB([portmidi], [Pm_Initialize], [],
		[AC_MSG_ERROR([**** Could not find libportmidi     ****])]
	    )
AC_CHECK_LIB([samplerate], [src_new], [],
		[AC_MSG_ERROR([**** Could not find samplerate     ****])]
	    )
AC_CHECK_LIB([pthread], [pthread_create], [],
		[AC_MSG_ERROR([**** Could not find libpthread     ****])]
	    )
AC_CHECK_LIB([curl], [curl_global_init], [],
		[AC_MSG_ERROR([**** Could not find libcurl     ****])]
	    )
AC_CHECK_LIB([ssl], [SSL_CTX_new], [],
	     [AC_MSG_ERROR([**** Could not find libssl      ****])]
	    )
AC_CHECK_LIB([crypto], [EVP_EncryptInit], [],
	     [AC_MSG_ERROR([**** Could not find libcrypto      ****])]
	    )

])

AC_CHECK_HEADER([winsock2.h], 
		[
		LIBS="$LIBS -lws2_32"
		host_os="windows"
		],
	        )

AM_GNU_GETTEXT([external])
AM_GNU_GETTEXT_VERSION([0.19])

AM_CONDITIONAL(WINDOWS, test "$host_os" = "windows")


build_linux=no
build_windows=no
build_mac=no
build_freebsd=no

# Detect the target system
case "${host_os}" in
    linux*)
        build_linux=yes
        AC_MSG_NOTICE([Linux detected])

	    AS_IF([test "x$enable_aac" != "xno" -a "x$client_only" != "xyes"], 
	    [
	        AC_CHECK_LIB([fdk-aac], [aacEncOpen], 
                [
                CPPFLAGS="$CPPFLAGS -DHAVE_LIBFDK_AAC"
                LIBS="$LIBS -ldl"
                ],
			    [AC_MSG_ERROR([**** Could not find libfdk-aac - run ./configure --disable-aac to build without aac support ****])]
            )
	    ])
        AC_ARG_ENABLE([webrtc],
        AS_HELP_STRING([--enable-webrtc], [Enable WebRTC support]), 
        [
            AS_IF([test "x$client_only" != "xyes"], 
            [
                AC_CHECK_LIB([datachannel], [rtcCreatePeerConnection], [],
	            [AC_MSG_ERROR([**** Could not find datachannel      ****])])
            ])
        ])
    ;;
    cygwin*|mingw*|windows)
        build_windows=yes
        AC_MSG_NOTICE([Windows detected])

        # Do NOT check for aac lib here because butt must not depend on libfdk-aac dll.
        # Instead define HAVE_LIBFDK_AAC manually, so butt runs with and without the dll
        CPPFLAGS="$CPPFLAGS -DHAVE_LIBFDK_AAC"

        AS_IF([test "x$client_only" != "xyes"], 
        [
            AC_CHECK_LIB([datachannel], [rtcCreatePeerConnection], [],
	        [AC_MSG_ERROR([**** Could not find datachannel      ****])])
        ])
	;;
    darwin*)
        build_mac=yes
        AC_MSG_NOTICE([MacOS detected])
        CPPFLAGS="$CPPFLAGS -x objective-c++"
        LIBS="$LIBS -framework AVFoundation -lintl -framework ScriptingBridge"
        LDFLAGS="$LDFLAGS -rpath /usr/local/lib"
        
        AS_IF([test "x$client_only" != "xyes"], 
        [
            AC_CHECK_LIB([datachannel], [rtcCreatePeerConnection], [],
	        [AC_MSG_ERROR([**** Could not find datachannel      ****])])
        ])
        ;;
    freebsd*)
        build_freebsd=yes
        AC_MSG_NOTICE([FreeBSD detected])

        AS_IF([test "x$enable_aac" != "xno" -a "x$client_only" != "xyes"], 
        [
	       # By default AC_CHECK_LIB adds -lfdk-aac to the linker flags if the check succeeds. But as the library is loaded with dlopen() during runtime
	       # the linker flag is not needed. So we only define HAVE_LIBFDK_AAC in case the library was found
	       AC_CHECK_LIB([fdk-aac], [aacEncOpen], [CPPFLAGS="$CPPFLAGS -DHAVE_LIBFDK_AAC"], 
			    [AC_MSG_ERROR([**** Could not find libfdk-aac - run ./configure --disable-aac to build without aac support ****])]
			)
        ])
        
        AC_ARG_ENABLE([webrtc],
        AS_HELP_STRING([--enable-webrtc], [Enable WebRTC support]), 
        [
            AS_IF([test "x$client_only" != "xyes"], 
            [
                AC_CHECK_LIB([datachannel], [rtcCreatePeerConnection], [],
	            [AC_MSG_ERROR([**** Could not find datachannel      ****])])
            ])
        ])
        ;;
    *)
        AC_MSG_ERROR(["OS $host_os is not supported"])
        ;;
esac

# Pass the conditionals to automake
AM_CONDITIONAL([LINUX], [test "$build_linux" = "yes"])
AM_CONDITIONAL([WINDOWS], [test "$build_windows" = "yes"])
AM_CONDITIONAL([OSX], [test "$build_mac" = "yes"])
AM_CONDITIONAL([FREEBSD], [test "$build_freebsd" = "yes"])
AM_CONDITIONAL([WITH_RADIOCO],  [test "x$with_radioco" = "xyes"])
AM_CONDITIONAL([WITH_CLIENT],  [test "x$with_client" = "xyes" -o "x$client_only" = "xyes"])
AM_CONDITIONAL([CLIENT_ONLY],  [test "x$client_only" = "xyes"]) 

AC_CHECK_PROG([FLTKCONFIG],[fltk-config], [fltk-config])

if test "x$client_only" != "xyes"; then
    if test "$FLTKCONFIG" = "fltk-config"; then
        AC_CHECK_LIB([fltk], [main], 
                     [
                      LIBS="$LIBS `fltk-config --ldflags --use-images`"
                      CXXFLAGS="$CXXFLAGS `fltk-config --cxxflags`"
                      ],
                      [AC_MSG_ERROR([**** Could not find libfltk     ****])]
                      )
        else
            AC_MSG_ERROR([**** Could not find fltk-config     ****])
    fi
fi


#Add dbus library for Linux
if test "$build_linux" = "yes" -a "x$client_only" != "xyes"; then
	AC_MSG_NOTICE([])
	PKG_CHECK_MODULES([DBUS], [dbus-1], [
		AC_DEFINE([HAVE_DBUS], [1], [Use dbus to get current tracks])
		LIBS="$LIBS $DBUS_LIBS"
		CFLAGS="$CFLAGS $LIBS $DBUS_CFLAGS"
		CXXFLAGS="$CXXFLAGS $DBUS_CFLAGS"
	], [
		AC_DEFINE([HAVE_DBUS], [0], [Use dbus to get current tracks])
		AC_MSG_ERROR([**** Coud not find dbus dev files])
	])
	 # Explicitly add X11 library because it is not added by fltk-config on OpenSUSE
        LIBS="$LIBS -lX11"

fi

#Add dbus library for FreeBSD
if test "$build_freebsd" = "yes" -a "x$client_only" != "xyes"; then
        AC_MSG_NOTICE([])
        PKG_CHECK_MODULES([DBUS], [dbus-1], [
                AC_DEFINE([HAVE_DBUS], [1], [Use dbus to get current tracks])
                LIBS="$LIBS $DBUS_LIBS"
                CFLAGS="$CFLAGS $LIBS $DBUS_CFLAGS"
                CXXFLAGS="$CXXFLAGS $DBUS_CFLAGS"
        ], [
                AC_DEFINE([HAVE_DBUS], [0], [Use dbus to get current tracks])
                AC_MSG_ERROR([**** Coud not find dbus dev files])
        ])
fi
# Checks for header files.
AC_PATH_X
AC_CHECK_HEADERS([fcntl.h limits.h netdb.h netinet/in.h stdlib.h string.h sys/socket.h unistd.h])

# Checks for typedefs, structures, and compiler characteristics.
AC_HEADER_STDBOOL
AC_C_INLINE

# Checks for library functions.
#AC_FUNC_MALLOC
#AC_FUNC_REALLOC
AC_CHECK_FUNCS([gethostbyaddr gethostbyname memset pow select socket strchr strdup strpbrk strrchr strstr X509_check_host])

AC_CONFIG_FILES([Makefile po/Makefile.in src/Makefile])
AC_OUTPUT