AC_INIT([Music On Console],[2.6-alpha3],[mocmaint@daper.net],[moc],
                           [http://moc.daper.net/])
AC_CONFIG_SRCDIR([main.c])
AC_CONFIG_HEADERS([config.h])

AM_INIT_AUTOMAKE([dist-xz no-dist-gzip])

AC_PREREQ([2.64])

AC_CANONICAL_HOST
AC_PROG_CC_C99
AC_PROG_CXX
AC_PROG_INSTALL

if test "x$ac_cv_prog_cc_c99" = "xno"
then
	AC_MSG_ERROR([You need an ISO C99 capable compiler.])
fi

dnl Test for POSIX.1-2001 or better.
AC_EGREP_CPP(posix_2001_compatible,
             [#define _POSIX_C_SOURCE 200112L
              #include <unistd.h>
              #ifdef _POSIX_VERSION
              #if _POSIX_VERSION >= 200112L
              posix_2001_compatible
              #endif
              #endif
             ],
             [true],
             [AC_MSG_ERROR([A POSIX.1-2001 compatible system is required.])])

AC_PROG_AWK
AC_LIBTOOL_DLOPEN
AC_DISABLE_STATIC
AC_ENABLE_SHARED
AC_PROG_LIBTOOL
AC_LIB_LTDL

AC_SUBST([EXTRA_OBJS])

plugindir=$libdir/moc
AC_SUBST([plugindir])
PLUGIN_LDFLAGS='-module -avoid-version'
AC_SUBST([PLUGIN_LDFLAGS])

case "$host_os" in
	linux*)
		AC_DEFINE([LINUX], 1, [Define if your system is GNU/Linux])
		;;
	openbsd*)
		AC_DEFINE([OPENBSD], 1, [Define if your system is OpenBSD])
		;;
	freebsd*)
		AC_DEFINE([FREEBSD], 1, [Define if your system is FreeBSD])
		;;
esac

dnl Check that a function pointer is the same size as a data pointer.
AC_MSG_CHECKING([if function and data pointer sizes match])
AC_RUN_IFELSE(
	[AC_LANG_PROGRAM(
		[], [[if (sizeof(void *) != sizeof(void (*)())) return 1;]]
	)],
	[AC_MSG_RESULT([yes])],
	[WARN_POINTER_MISMATCH=yes
	 AC_MSG_RESULT([no])],
	[AC_MSG_RESULT([unknown])
	 AC_MSG_WARN([Cross-compilation means pointer size test couldn't be run])])

AC_DEFINE([_FILE_OFFSET_BITS], 64, [Use 64bit IO])

dnl required X/Open SUS standard headers
AC_CHECK_HEADERS([strings.h sys/un.h],,
		 AC_MSG_ERROR([Required X/Open SUS header files are not present.]))

dnl required OS provided headers
AC_CHECK_HEADERS([sys/ioctl.h sys/param.h],,
		 AC_MSG_ERROR([Required OS header files are not present.]))

dnl optional headers
AC_CHECK_HEADERS([byteswap.h])

dnl langinfo
AC_CHECK_HEADERS([langinfo.h])
AC_CHECK_HEADERS([nl_types.h])
AC_CHECK_FUNCS([nl_langinfo])

dnl CODESET (taken from vim)
AC_MSG_CHECKING(for nl_langinfo(CODESET))
AC_TRY_LINK([
	     #ifdef HAVE_LANGINFO_H
	     # include <langinfo.h>
	     #endif
	     ], [char *cs = nl_langinfo(CODESET);],
	     AC_MSG_RESULT(yes)
	     AC_DEFINE([HAVE_NL_LANGINFO_CODESET], 1,
		       [Define if you have CODESET constant]),
	     AC_MSG_RESULT(no))

AC_C_BIGENDIAN

AC_C_CONST
AC_TYPE_INTPTR_T
AX_CFLAGS_GCC_OPTION(-Wall)
AX_CFLAGS_GCC_OPTION(-Wextra)

dnl Overly-enthusiastic warning suppression.
save_CFLAGS="$CFLAGS"
AX_CFLAGS_GCC_OPTION([-Wgnu-zero-variadic-macro-arguments], ,
                     AC_DEFINE([HAVE_VARIADIC_MACRO_WARNING], 1,
                               [Define if compiler recognises warning option]))
AX_CFLAGS_GCC_OPTION([-Werror=unknown-warning-option])
AX_CFLAGS_GCC_OPTION([-Wformat-truncation], ,
                     AC_DEFINE([HAVE_FORMAT_TRUNCATION_WARNING], 1,
                               [Define if compiler recognises warning option]))
CFLAGS="$save_CFLAGS"

PKG_PROG_PKG_CONFIG([0.20])

if test "x$PKG_CONFIG" = "x"
then
	AC_MSG_WARN([No pkg-config utility found or it's too old, I will have trouble finding installed libraries.])
fi

AC_ARG_ENABLE(cache, AS_HELP_STRING([--enable-cache],
                                    [Enable tags caching code]))

if test "x$enable_cache" != "xno"
then
	save_CFLAGS="$CFLAGS"
	CFLAGS=
	AX_PATH_BDB([4.1], [], AC_MSG_ERROR([BerkeleyDB (libdb) not found.]))
	CPPFLAGS="$CPPFLAGS $BDB_CPPFLAGS"
	CFLAGS="$save_CFLAGS"
	LDFLAGS="$LDFLAGS $BDB_LDFLAGS"
	EXTRA_LIBS="$EXTRA_LIBS $BDB_LIBS"
	AC_CHECK_TYPES([u_int], , , [[#include "${srcdir}/compiler.h"]
	                             [#include <sys/types.h>]
	                             [#include <db.h>]])
fi

AC_ARG_WITH(oss, AS_HELP_STRING([--without-oss],
                                [Compile without OSS support]))

if test "x$with_oss" != "xno"
then
	OSSLIBDIR="$with_oss"
	if test "x$with_oss" = "x" || test "x$with_oss" = "xyes"
	then
		OSSLIBDIR="/usr/lib/oss"
		if test -f "/etc/oss.conf"
		then
			. /etc/oss.conf
		fi
	fi

	if test -d "$OSSLIBDIR/include"
	then
		OSS_CFLAGS="-I$OSSLIBDIR/include"
	fi

	save_CPPFLAGS="$CPPFLAGS"
	CPPFLAGS="$CPPFLAGS $OSS_CFLAGS"
	AC_CHECK_HEADERS([sys/soundcard.h soundcard.h])
	CPPFLAGS="$save_CPPFLAGS"

	if test "$ac_cv_header_sys_soundcard_h" = "yes" -o \
	        "$ac_cv_header_soundcard_h" = "yes"
	then
		AC_DEFINE([HAVE_OSS], 1, [Define if you have OSS.])
		EXTRA_OBJS="$EXTRA_OBJS oss.o"
		CFLAGS="$CFLAGS $OSS_CFLAGS"
		SOUND_DRIVERS="$SOUND_DRIVERS OSS"
		AC_CHECK_LIB([ossaudio], [_oss_ioctl],
		             [EXTRA_LIBS="$EXTRA_LIBS -lossaudio"])
	fi
fi

AC_ARG_WITH(sndio, AS_HELP_STRING([--without-sndio],
                                  [Compile without SNDIO support]))

if test "x$with_sndio" != "xno"
then
	AC_CHECK_HEADERS([sndio.h])
	if test "$ac_cv_header_sndio_h" = "yes"
	then
		AC_DEFINE([HAVE_SNDIO], 1, [Define if you have SNDIO.])
		EXTRA_OBJS="$EXTRA_OBJS sndio_out.o"
		SOUND_DRIVERS="$SOUND_DRIVERS SNDIO"
		AC_CHECK_LIB([sndio], [sio_open],
		             [EXTRA_LIBS="$EXTRA_LIBS -lsndio"])
	fi
fi

AC_ARG_WITH(alsa, AS_HELP_STRING([--without-alsa],
                                 [Compile without ALSA support]))

COMPILE_ALSA="no"
if test "x$with_alsa" != "xno"
then
	PKG_CHECK_MODULES(ALSA, [alsa >= 1.0.11],
	     [SOUND_DRIVERS="$SOUND_DRIVERS ALSA"
	      EXTRA_OBJS="$EXTRA_OBJS alsa.o"
	      AC_DEFINE([HAVE_ALSA], 1, [Define if you have ALSA.])
	      EXTRA_LIBS="$EXTRA_LIBS $ALSA_LIBS"
	      COMPILE_ALSA="yes"
	      CFLAGS="$CFLAGS $ALSA_CFLAGS"],
	     [true])
fi

AC_ARG_WITH(jack, AS_HELP_STRING([--without-jack],
                                 [Compile without JACK support]))

if test "x$with_jack" != "xno"
then
	PKG_CHECK_MODULES(JACK, [jack >= 0.4],
			  [SOUND_DRIVERS="$SOUND_DRIVERS JACK"
			   EXTRA_OBJS="$EXTRA_OBJS jack.o"
			   AC_DEFINE([HAVE_JACK], 1, [Define if you have JACK.])
			   EXTRA_LIBS="$EXTRA_LIBS $JACK_LIBS"
			   CFLAGS="$CFLAGS $JACK_CFLAGS"
			   AC_SEARCH_LIBS(jack_client_open, jack,
			       [AC_DEFINE([HAVE_JACK_CLIENT_OPEN], 1,
			           [Define to 1 if you have the `jack_client_open' function.])])],
			  [true])
fi

AC_SUBST([SOUNDDRIVER])
case "$host_os" in
	openbsd*) SOUNDDRIVER="SNDIO:JACK:OSS";;
	       *) SOUNDDRIVER="JACK:ALSA:OSS";;
esac

AC_ARG_ENABLE(debug, AS_HELP_STRING([--enable-debug],
                                    [Enable debugging code]))

if test "x$enable_debug" = "xno"
then
	AC_DEFINE([NDEBUG], 1, [Define if you don't want debugging code])
	COMPILE_DEBUG='no'
else
	if test "x$enable_debug" = "xgdb"
	then
		AX_CFLAGS_GCC_OPTION([-ggdb])
		AX_CFLAGS_GCC_OPTION([-O0])
		COMPILE_DEBUG='gdb'
	fi
	if test "x$ac_cv_cflags_gcc_option__ggdb" = "x"
	then
		AX_CFLAGS_GCC_OPTION([-g])
		COMPILE_DEBUG='yes'
	fi
	EXTRA_OBJS="$EXTRA_OBJS null_out.o md5.o"
fi

AC_FUNC_MALLOC

dnl required POSIX (TMR/TSF/XSI) functions
AC_CHECK_FUNCS([localtime_r nanosleep strcasecmp \
                strdup strncasecmp wcswidth],,
	       AC_MSG_ERROR([Required POSIX functions are not present.]))

dnl optional functions
AC_FUNC_STRERROR_R
AC_CHECK_FUNCS([sched_get_priority_max syslog])

dnl OSX / MacOS doesn't provide clock_gettime(3) prior to darwin-16.0.0
dnl so fall back to gettimeofday(2).
case "$host_os" in
[*darwin[1-9].*] | [*darwin1[0-5].*])
	HAVE_CLOCK_GETTIME="no"
	;;
*darwin*)
	HAVE_CLOCK_GETTIME="yes"
	;;
*)
	AC_CHECK_LIB([rt], [clock_gettime],
		[HAVE_CLOCK_GETTIME="yes"],
		[HAVE_CLOCK_GETTIME="no"])
	;;
esac

if test "$HAVE_CLOCK_GETTIME" = "yes"
then
	AC_DEFINE([HAVE_CLOCK_GETTIME], 1, [Define if you have clock_gettime(3)])
else
	AC_CHECK_FUNCS([gettimeofday],
		[AC_MSG_WARN([Using the obsolete gettimeofday(2) function.])],
		[AC_MSG_ERROR([No suitable current time function found.])])
fi

dnl strcasestr(3) is a GNU extension
AC_CHECK_DECLS([strcasestr], , , [[#include "${srcdir}/compiler.h"]
                                  [#include <string.h>]])
AC_CHECK_FUNCS([strcasestr])

dnl MIME magic
AC_ARG_WITH(magic, AS_HELP_STRING([--without-magic],
                                  [Compile without MIME magic support]))
COMPILE_MAGIC="no"
if test "x$with_magic" != "xno"
then
	AC_CHECK_LIB(magic, magic_open,
		[COMPILE_MAGIC="yes"
		 AC_DEFINE([HAVE_LIBMAGIC], 1, [Define if you have libmagic.])
		 EXTRA_LIBS="$EXTRA_LIBS -lmagic"])
fi

AC_FUNC_MMAP

dnl POSIX threads
AX_PTHREAD
if test "$ax_pthread_ok" != "yes"
then
	AC_MSG_ERROR([[I don't know how to compile pthreads code on this system.]])
fi
CC="$PTHREAD_CC"
CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
EXTRA_LIBS="$EXTRA_LIBS $PTHREAD_LIBS"
AC_CHECK_FUNCS([getrlimit])
AC_CHECK_LIB([pthread], [pthread_attr_getstacksize],
	[AC_DEFINE([HAVE_PTHREAD_ATTR_GETSTACKSIZE], 1,
		[Define if you have pthread_attr_getstacksize(3).])])

dnl __attribute__
AX_C___ATTRIBUTE__
if test "x$ax_cv___attribute__" = "xyes"
then
	AX_GCC_FUNC_ATTRIBUTE(format)
	AX_GCC_FUNC_ATTRIBUTE(noreturn)
	AX_GCC_VAR_ATTRIBUTE(aligned)
	AX_GCC_VAR_ATTRIBUTE(unused)
fi

dnl popt
AC_SEARCH_LIBS([poptGetContext], [popt], ,
               AC_MSG_ERROR([POPT (libpopt) not found.]))

dnl ncurses
dnl This 'unset' circumvents a notified bug in AX_WITH_CURSES when
dnl _PKG_CONFIG succeeds but a stale 'pkg_failed' value is checked.
dnl It can be removed once an updated 'ax_with_curses.m4' is committed.
unset pkg_failed
AX_WITH_CURSES
if test "x$ax_cv_curses" != "xyes"
then
	AC_MSG_ERROR([You need curses/ncurses library and header files.])
fi
EXTRA_LIBS="$EXTRA_LIBS $CURSES_LIBS"
dnl Remove -D_GNU_SOURCE as it causes problems when defined mid-configure.
for flag in $CURSES_CFLAGS
do
	if test "x$flag" != "x-D_GNU_SOURCE"
	then
		CPPFLAGS="$CPPFLAGS $flag"
	fi
done
AC_RUN_LOG([: The test below is actually for set_escdelay in curses library.])
AC_RUN_LOG([: Using 'm' avoids unpacking CURSES_LIBS.])
AC_CHECK_LIB([m], [set_escdelay],
	AC_DEFINE([HAVE_SET_ESCDELAY], 1, [Define if you have set_escdelay.]),
	[], [$CURSES_LIBS])

dnl samplerate
AC_ARG_WITH(samplerate, AS_HELP_STRING([--without-samplerate],
                                       [Compile without libsamplerate]))
COMPILE_SAMPLERATE="no"
if test "x$with_samplerate" != "xno"
then
	PKG_CHECK_MODULES(samplerate, samplerate >= 0.1.0,
			  [EXTRA_LIBS="$EXTRA_LIBS $samplerate_LIBS"
			   CFLAGS="$CFLAGS $samplerate_CFLAGS"
			   AC_DEFINE([HAVE_SAMPLERATE], 1,
				     [Define if you have libsamplerate])
			   COMPILE_SAMPLERATE="yes"],
			   [true])
fi

dnl Decoder plugins
m4_include(decoder_plugins/decoders.m4)

dnl Require with iconv for charset translation.
AM_ICONV
if test "x$am_cv_func_iconv" != xyes; then
	AC_MSG_ERROR([No iconv library found.])
fi
EXTRA_LIBS="$EXTRA_LIBS $LIBICONV"

dnl librcc
COMPILE_RCC=no
AC_ARG_WITH(rcc, AS_HELP_STRING([--without-rcc],
                                [Compile without LIBRCC support]))
if test "x$with_rcc" != "xno"
then
AC_CHECK_HEADERS([librcc.h],
                 [AC_DEFINE([HAVE_RCC], 1, [Define if you have librcc.h])
                  AC_CHECK_LIB(rcc, rccInit,
                               [RCC_LIBS="-lrcc"
                                AC_SUBST([RCC_LIBS])
                                COMPILE_RCC=yes])
                 ])
    if ! $PKG_CONFIG --atleast-version 0.2.10 librcc
    then
        UPGRADE_LIBRCC="yes"
    fi
fi

dnl curl
COMPILE_CURL="no"
AC_ARG_WITH(curl, AS_HELP_STRING([--without-curl],
                                 [Compile without Network streams support]))
if test "x$with_curl" != "xno"
then
	PKG_CHECK_MODULES(CURL, [libcurl >= 7.15.1],
		[EXTRA_OBJS="$EXTRA_OBJS io_curl.o"
		 AC_DEFINE([HAVE_CURL], 1, [Define if you have libcurl])
		 EXTRA_LIBS="$EXTRA_LIBS $CURL_LIBS"
		 CFLAGS="$CFLAGS $CURL_CFLAGS"
		 COMPILE_CURL="yes"
		 if ! $PKG_CONFIG --atleast-version 7.15.4 libcurl
		 then
			UPGRADE_LIBCURL="yes"
		 fi],
		[true])
fi

dnl Capture configuration options for this build.
AC_DEFINE_UNQUOTED([CONFIGURATION], ["$ac_configure_args"],
                   [Define to the configuration used to build MOC.])

dnl Capture SVN revision number for this build.
AC_PATH_PROG(SVNVERSION, [svnversion])
if test -n "$SVNVERSION"
then
	SVNREVN=`$SVNVERSION -n $srcdir`
	SVNREVN=`expr "$SVNREVN" : '\([[^:]]*\)'`
	if test "x$SVNREVN" = "xexported"
	then
		unset SVNREVN
	else
		echo -n $SVNREVN > REVISION
		EXTRA_DISTS="$EXTRA_DISTS REVISION"
	fi
fi
if test -z "$SVNREVN" && test -f $srcdir/REVISION
then
	SVNREVN=`cat $srcdir/REVISION`
	EXTRA_DISTS="$EXTRA_DISTS REVISION"
fi
if test -n "$SVNREVN"
then
	AC_DEFINE_UNQUOTED([PACKAGE_REVISION], ["$SVNREVN"],
	                   [The SVN revision of this build.])
fi

AC_SUBST(EXTRA_LIBS)
AC_SUBST(EXTRA_DISTS)
AH_BOTTOM([#include "compiler.h"])

AC_OUTPUT([Makefile
	  themes/Makefile
	  config.example
	  ])

echo
echo "-----------------------------------------------------------------------"
echo "MOC will be compiled with:"
echo
if test ${#DECODER_PLUGINS} -le 50
then
	echo "Decoder plugins:  $DECODER_PLUGINS"
else
	DECODERS_IX=`echo $DECODER_PLUGINS | $AWK '{match(substr($0, 1, 51), /.* /);print(RLENGTH)}'`
	DECODERS_1=`echo $DECODER_PLUGINS | $AWK "{print(substr(\\$0, 1, $DECODERS_IX - 1))}"`
	DECODERS_2=`echo $DECODER_PLUGINS | $AWK "{print(substr(\\$0, $DECODERS_IX + 1))}"`
	echo "Decoder plugins:   $DECODERS_1"
	echo "                   $DECODERS_2"
fi
echo "Sound Drivers:    "$SOUND_DRIVERS
echo "DEBUG:             "$COMPILE_DEBUG
echo "RCC:               "$COMPILE_RCC
echo "Network streams:   "$COMPILE_CURL
echo "Resampling:        "$COMPILE_SAMPLERATE
echo "MIME magic:        "$COMPILE_MAGIC
echo "-----------------------------------------------------------------------"
echo

if test "x$UPGRADE_TAGLIB" = "xyes"
then
	echo "WARNING: MOC will soon require TagLib version 1.5 or later;"
	echo "         plan to upgrade your TagLib soon."
	echo
fi

if test "x$UPGRADE_MUSEPACK" = "xyes"
then
	echo "WARNING: MOC will soon require Musepack libmpc (rather than libmpcdec);"
	echo "         plan to upgrade your Musepack soon."
	echo
fi

if test "x$UPGRADE_LIBRCC" = "xyes"
then
	echo "WARNING: MOC will soon require librcc version 0.2.10 or later;"
	echo "         plan to upgrade your RCC library soon."
	echo
fi

if test "x$UPGRADE_LIBCURL" = "xyes"
then
	echo "WARNING: MOC will soon require libcurl version 7.15.4 or later;"
	echo "         plan to upgrade your cURL library soon."
	echo
fi

if test "x$DECODER_PLUGINS" = "x"
then
	echo "WARNING: No decoder plugins are to be compiled;"
	echo "         you will have to provide them separately."
	echo
fi

if test "x$SOUND_DRIVERS" = "x"
then
	echo "WARNING: No sound output methods are to be compiled;"
	echo "         you will not hear any sound!"
	echo
fi

if test "x$cross_compiling" = "xyes"
then
	echo "WARNING: Because of cross-compilation, some tests could not be run"
	echo "         and MOC may fail with memory access or illegal instruction"
	echo "         errors when loading plug-ins."
	echo
fi

if test "x$WARN_POINTER_MISMATCH" = "xyes"
then
	echo "WARNING: Because the sizes of data and function pointers are not"
	echo "         the same on this architecture, MOC may fail with memory"
	echo "         access or illegal instruction errors when loading plug-ins."
	echo
fi

if test "x$COMPILE_SAMPLERATE" = "xno" -a "x$COMPILE_ALSA" = "xyes"
then
	echo "WARNING: Without libsamplerate, the 'ALSAStutterDefeat' option"
	echo "         may severely restrict the number of audios playable."
	echo
fi