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

AC_INIT(config.h.in)
AC_CONFIG_HEADER(config.h)
AM_INIT_AUTOMAKE(forked-daapd, 0.10)

AC_USE_SYSTEM_EXTENSIONS

dnl Checks for programs.
AC_PROG_CC
AM_PROG_CC_C_O
LT_INIT([disable-static])

AC_CHECK_PROG(ANTLR, [antlr3], [antlr3])
if test "x$ANTLR" = x; then
	AC_MSG_NOTICE([antlr3 wrapper not found, checking direct java invocation])
	AC_CHECK_PROG(JAVA, [java], [java])
	if test "x$JAVA" = x; then
		AC_MSG_FAILURE([java not found; check your java installation])
	else
		if $JAVA org.antlr.Tool > /dev/null 2>&1; then
			AC_MSG_NOTICE([Direct java invocation working, using java org.antlr.Tool to invoke antlr])
			ANTLR="$JAVA org.antlr.Tool"
		else
			AC_MSG_FAILURE([antlr3 wrapper not found and direct java invocation failed; check your antlr3/java installation])
		fi
	fi
fi
AC_SUBST(ANTLR)

CFLAGS="$CFLAGS -Wall -D_LARGEFILE_SOURCE"

AC_CHECK_HEADERS([sys/wait.h])
AC_CHECK_HEADERS([sys/param.h])
AC_CHECK_HEADERS([sys/select.h])
AC_CHECK_HEADERS([dirent.h])
AC_CHECK_HEADERS([sys/eventfd.h])
AC_CHECK_FUNCS(eventfd)
AC_CHECK_FUNCS(posix_fadvise)
AC_CHECK_FUNCS(strptime)
AC_CHECK_FUNCS(strtok_r)
AC_CHECK_FUNCS(timegm)

dnl Large File Support (LFS)
AC_SYS_LARGEFILE
AC_TYPE_OFF_T

AC_ARG_ENABLE(flac, AC_HELP_STRING([--enable-flac], [Enable FLAC support]),
                      use_flac=true;
                      CPPFLAGS="${CPPFLAGS} -DFLAC")

AC_ARG_ENABLE(musepack, AC_HELP_STRING([--enable-musepack], [Enable Musepack support]),
                      use_musepack=true;
                      CPPFLAGS="${CPPFLAGS} -DMUSEPACK")

AC_ARG_ENABLE(itunes, AC_HELP_STRING([--enable-itunes], [Enable iTunes library support]),
                      use_itunes=true;
                      CPPFLAGS="${CPPFLAGS} -DITUNES")

AM_CONDITIONAL(COND_FLAC, test x$use_flac = xtrue)
AM_CONDITIONAL(COND_MUSEPACK, test x$use_musepack = xtrue)
AM_CONDITIONAL(COND_ITUNES, test x$use_itunes = xtrue)

dnl Checks for libraries.
PKG_CHECK_MODULES(CONFUSE, [ libconfuse ])
PKG_CHECK_MODULES(AVAHI, [ avahi-client >= 0.6.24 ])
PKG_CHECK_MODULES(SQLITE3, [ sqlite3 >= 3.5.0 ])

save_LIBS="$LIBS"
LIBS="$SQLITE3_LIBS"
dnl Check that SQLite3 has the unlock notify API built-in
AC_CHECK_LIB([sqlite3], [sqlite3_unlock_notify], [], AC_MSG_ERROR([SQLite3 was built without unlock notify support]))
dnl Check that SQLite3 has been built with threadsafe operations
AC_MSG_CHECKING([if SQLite3 was built with threadsafe operations support])
AC_LANG_PUSH([C])
AC_RUN_IFELSE(
  [AC_LANG_PROGRAM([dnl
    #include <sqlite3.h>
    ], [dnl
    int ret = sqlite3_config(SQLITE_CONFIG_MULTITHREAD);
    if (ret != SQLITE_OK)
      return 1;
    return 0;])],
  [AC_MSG_RESULT([yes])], [AC_MSG_ERROR([SQLite3 was not built with threadsafe operations support])],
  [AC_MSG_RESULT([runtime will tell])])
AC_LANG_POP([C])
LIBS="$save_LIBS"

PKG_CHECK_MODULES(FFMPEG, [ libavcodec libavformat libswscale libavutil ])
PKG_CHECK_MODULES(MINIXML, [ mxml ])

AC_CHECK_HEADER(event.h, , AC_MSG_ERROR([event.h not found]))
AC_CHECK_LIB([event_core], [event_init], [LIBEVENT_LIBS="-levent_core"], AC_MSG_ERROR([libevent not found]))
AC_CHECK_HEADER(evhttp.h, , AC_MSG_ERROR([evhttp.h not found]))
dnl save_LIBS="$LIBS"
dnl LIBS=-levent_core
dnl AC_CHECK_LIB([event_extra], [evhttp_new], [LIBEVENT_LIBS="$LIBEVENT_LIBS -levent_extra"], AC_MSG_ERROR([libevent not found]))
dnl LIBS="$save_LIBS"
AC_SUBST(LIBEVENT_LIBS)

AC_CHECK_HEADER(avl.h, , AC_MSG_ERROR([avl.h not found]))
AC_CHECK_LIB([avl], [avl_alloc_tree], [LIBAVL_LIBS="-lavl"], AC_MSG_ERROR([libavl not found]))
AC_SUBST(LIBAVL_LIBS)

AC_CHECK_HEADER(antlr3.h, , AC_MSG_ERROR([antlr3.h not found]))
AC_CHECK_LIB([antlr3c], [antlr3BaseRecognizerNew], [ANTLR3C_LIBS="-lantlr3c"], AC_MSG_ERROR([ANTLR3 C runtime (libantlr3c) not found]))
AC_SUBST(ANTLR3C_LIBS)

AM_PATH_LIBGCRYPT([], , AC_MSG_ERROR([libgcrypt not found]))

if test x$use_flac = xtrue; then
	PKG_CHECK_MODULES(FLAC, [ flac ])
fi

if test x$use_musepack = xtrue; then
	PKG_CHECK_MODULES(TAGLIB, [ taglib_c ])
fi

if test x$use_itunes = xtrue; then
	PKG_CHECK_MODULES(LIBPLIST, [ libplist >= 0.16 ])
fi

case "$host" in
  *linux*)
    use_alsa=true
    PKG_CHECK_MODULES(ALSA, [ alsa ])
    AC_DEFINE(LAUDIO_USE_ALSA, 1, [define if local audio output uses ALSA])

    AC_CHECK_HEADER(sys/signalfd.h, , AC_MSG_ERROR([signalfd required; glibc 2.9+ recommended]))
    ;;
esac

AM_CONDITIONAL(COND_ALSA, test x$use_alsa = xtrue)

AC_CHECK_SIZEOF(void *)

AC_CHECK_HEADERS(getopt.h,,)
AC_CHECK_HEADERS(stdint.h,,)

dnl Checks for header files.
AC_HEADER_STDC
AC_HEADER_SYS_WAIT

AC_OUTPUT(src/Makefile Makefile)