dnl INITIALIZATION

AC_INIT([ezstream], [0.4.4], [mdgrimm@gmx.net])
AC_PREREQ(2.61)
AC_CONFIG_SRCDIR(src/ezstream.c)
AM_INIT_AUTOMAKE
AC_CONFIG_HEADERS(src/config.h)
AC_CONFIG_LIBOBJ_DIR(src)
AM_MAINTAINER_MODE
AC_USE_SYSTEM_EXTENSIONS


dnl SETUP

EXAMPLES_DIR="\$(datadir)/examples/${PACKAGE_TARNAME}"
AC_ARG_ENABLE(examplesdir,
	AS_HELP_STRING([--enable-examplesdir=DIR],
		[example configuration files installation directory (default: DATADIR/examples/ezstream)]),
[case "$enableval" in
	yes) ;;
	no) AC_MSG_ERROR([Must have an example configuration files install dir.]) ;;
	*) EXAMPLES_DIR="$enableval" ;;
esac], [])
AC_SUBST(EXAMPLES_DIR)

AC_CANONICAL_HOST

if test -z "$GCC"; then
	case $host in 
	*-irix*)
		XIPH_CPPFLAGS="-fullwarn"
		;;
	*-solaris*)
		XIPH_CPPFLAGS="-v"
		;;
	*)
		;;
	esac
else
	XIPH_CPPFLAGS="-Wall -Wwrite-strings -Wpointer-arith -Wsign-compare -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations"
fi


dnl MISC SYSTEM CHARACTERISTICS

dnl __progname check adapted from OpenNTPd-portable configure.ac
AC_MSG_CHECKING([whether libc defines __progname])
AC_LINK_IFELSE(
	[AC_LANG_PROGRAM([[#include <stdio.h>]],
		[[extern char *__progname; printf("%s\n", __progname); ]])],
	[ac_cv_libc_defines___progname="yes"],
	[ac_cv_libc_defines___progname="no"]
)
if test x"$ac_cv_libc_defines___progname" = "xyes"; then
	AC_MSG_RESULT([yes])
	AC_DEFINE(HAVE___PROGNAME, 1, [Define whether libc defines __progname])
else
	AC_MSG_RESULT([no])
fi

AC_C_CONST
AC_TYPE_SIZE_T


dnl USEFUL HEADERS

AC_CHECK_HEADERS(sys/time.h paths.h signal.h libgen.h)


dnl LIBRARY FUNCTIONS

AC_CHECK_LIB(gen, basename)
AC_CHECK_FUNCS(arc4random gettimeofday random srandomdev stat)
AC_REPLACE_FUNCS(getopt strlcat strlcpy strtonum)
if test x"$ac_cv_header_signal_h" = "xyes"; then
	AC_CHECK_FUNCS([sigaction], [
		AC_DEFINE(HAVE_SIGNALS, 1, [Define whether we have BSD signals])
		], [], [#include <signal.h>])
fi


dnl CONFIGURE OPTIONS

dnl Optional: TagLib support
AC_ARG_VAR([TAGLIB_PREFIX], [path to TagLib installation])
if test -n "${TAGLIB_PREFIX}"; then
	taglib_prefix="${TAGLIB_PREFIX}"
else
	taglib_prefix=""
fi
use_taglib=yes
require_taglib=no
AC_ARG_WITH(taglib,
	[AS_HELP_STRING([--with-taglib=PREFIX],
		[Prefix where TagLib is installed (default: autodetect)])],
[case "$withval" in
	yes) require_taglib=yes
	     if test -z "$taglib_prefix"; then
		taglib_prefix=/usr/local
	     fi
	     ;;
	no)  use_taglib=no ;;
	*)   require_taglib=yes
	     taglib_prefix="$withval"
	     ;;
esac], [])

have_taglib=no
AC_MSG_CHECKING([for TagLib option])
if test x"$use_taglib" != "xno"; then
	if test x"$require_taglib" = "xyes"; then
		AC_MSG_RESULT([enabled])
	else
		AC_MSG_RESULT([autodetect])
	fi

	TAGLIB_CFLAGS=""
	TAGLIB_CPPFLAGS=""
	TAGLIB_LIBS="-ltag_c"
	if test -n "$taglib_prefix"; then
		TAGLIB_CPPFLAGS="-I${taglib_prefix}/include"
		TAGLIB_LIBS="-L${taglib_prefix}/lib ${TAGLIB_LIBS}"
	fi

	ac_taglib_save_CFLAGS="$CFLAGS"
	ac_taglib_save_CPPFLAGS="$CPPFLAGS"
	ac_taglib_save_LIBS="$LIBS"

	CFLAGS="${TAGLIB_CFLAGS}"
	CPPFLAGS="${TAGLIB_CPPFLAGS}"
	LIBS="${TAGLIB_LIBS}"

	AC_CHECK_HEADERS([taglib/tag_c.h], [
			AC_MSG_CHECKING([whether TagLib works])
			AC_LINK_IFELSE(
				[AC_LANG_PROGRAM([[#include <taglib/tag_c.h>]],
					[[ taglib_set_string_management_enabled(0); ]])],
				[
				AC_MSG_RESULT([yes])
				have_taglib=yes
				], [
				if test x"$require_taglib" = "xyes"; then
					AC_MSG_RESULT([no])
					AC_MSG_ERROR([Cannot link against libtag_c in ${taglib_prefix}/lib])
				else
					AC_MSG_RESULT([no])
					AC_MSG_WARN([Error while linking against libtag_c in ${taglib_prefix}/lib, disabling support])
				fi
				]
			)
		], [
			if test x"$require_taglib" = "xyes"; then
				AC_MSG_ERROR([Cannot find taglib/tag_c.h in ${taglib_prefix}/include])
			else
				AC_MSG_NOTICE([No TagLib C header found on this system])
			fi
		])

	CFLAGS="$ac_taglib_save_CFLAGS"
	CPPFLAGS="$ac_taglib_save_CPPFLAGS"
	LIBS="$ac_taglib_save_LIBS"
else
	AC_MSG_RESULT([disabled])
fi

if test x"$have_taglib" = "xyes"; then
	AC_DEFINE(HAVE_TAGLIB, 1, [Define whether we're using TagLib])
else
	TAGLIB_CFLAGS=""
	TAGLIB_CPPFLAGS=""
	TAGLIB_LIBS=""
fi
AC_SUBST(TAGLIB_CFLAGS)
AC_SUBST(TAGLIB_CPPFLAGS)
AC_SUBST(TAGLIB_LIBS)

dnl Check for Ogg Vorbis
XIPH_PATH_OGG(, AC_MSG_ERROR([Must have libogg 1.x installed.]))
XIPH_PATH_VORBIS(, AC_MSG_ERROR([Must have libvorbis 1.x installed.]))

dnl Check for libshout.
XIPH_PATH_SHOUT(, AC_MSG_ERROR([Must have libshout 2.x installed.]))

dnl Check for libxml
XIPH_PATH_XML(, AC_MSG_ERROR([Must have libxml 2.x installed.]))

dnl Assemble *FLAGS and *LIBS in the proper order.
XIPH_VAR_APPEND([XIPH_CFLAGS], [$OGG_CFLAGS])
XIPH_VAR_PREPEND([XIPH_LIBS], [$OGG_LIBS])
XIPH_VAR_APPEND([XIPH_CFLAGS], [$VORBIS_CFLAGS])
XIPH_VAR_PREPEND([XIPH_LIBS], [$VORBIS_LIBS])
XIPH_VAR_APPEND([XIPH_CFLAGS], [$VORBISFILE_CFLAGS])
XIPH_VAR_PREPEND([XIPH_LIBS], [$VORBISFILE_LIBS])
XIPH_VAR_APPEND([XIPH_CFLAGS], [$SHOUT_CFLAGS])
XIPH_VAR_APPEND([XIPH_CPPFLAGS], [$SHOUT_CPPFLAGS])
XIPH_VAR_PREPEND([XIPH_LIBS], [$SHOUT_LIBS])
XIPH_VAR_APPEND([XIPH_CFLAGS], [$XML_CFLAGS])
XIPH_VAR_PREPEND([XIPH_LIBS], [$XML_LIBS])


dnl OUTPUT

AC_CONFIG_FILES(Makefile \
		doc/Makefile \
		examples/Makefile \
		m4/Makefile \
		src/Makefile \
		win32/Makefile)

AC_SUBST(XIPH_CPPFLAGS)
AC_SUBST(XIPH_CFLAGS)
AC_SUBST(XIPH_LIBS)
AC_SUBST(LIBS)
AC_SUBST(CFLAGS)

AC_OUTPUT