dnl INITIALIZATION

AC_INIT([ezstream], [0.5.2], [https://trac.xiph.org/newticket?component=ezstream])
AC_PREREQ(2.61)
AC_CONFIG_SRCDIR(src/ezstream.c)
AC_CONFIG_AUX_DIR(build-aux)
AM_INIT_AUTOMAKE
AC_CONFIG_HEADERS(src/config.h)
AC_CONFIG_LIBOBJ_DIR(src)
AM_MAINTAINER_MODE
AC_USE_SYSTEM_EXTENSIONS
AC_PROG_CC_STDC


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="-fstrict-aliasing -Wall -Wwrite-strings -Wpointer-arith -Wsign-compare -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations"
fi

ez_enable_debug=no
AC_ARG_ENABLE(debug,
	AS_HELP_STRING([--enable-debug],
		[enable memory debugging (default: no)]),
[case "$enableval" in
	no) ;;
	*) ez_enable_debug=yes ;;
esac], [])
AC_MSG_CHECKING([whether to enable debugging])
if test x"$ez_enable_debug" = "xyes"; then
	AC_DEFINE(XALLOC_DEBUG, 1, [Define whether to build with XALLOC debugging])
fi
AC_MSG_RESULT([$ez_enable_debug])


dnl USEFUL HEADERS

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

COMPAT_INCLUDES=""
if test x"$ez_enable_debug" = "xyes"; then
	AC_CHECK_HEADERS(sys/tree.h)
	if test x"$ac_cv_header_sys_tree_h" = "xyes"; then
		AC_MSG_CHECKING([for RB_FOREACH and RB_INSERT in sys/tree.h])
		AC_EGREP_CPP([yes], [
#include <sys/tree.h>
#if defined(RB_FOREACH) && defined(RB_INSERT)
 yes
#endif
		], [
			AC_MSG_RESULT([yes])
			AC_DEFINE(HAVE_WORKING_SYS_TREE_H, 1,
				[Define whether RB_FOREACH is defined in <sys/tree.h>])
		], [
			AC_MSG_RESULT([no])
			COMPAT_INCLUDES="-I\$(top_srcdir)/compat"
		])
	else
		COMPAT_INCLUDES="-I\$(top_srcdir)/compat"
	fi
fi
AC_SUBST(COMPAT_INCLUDES)


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_C_VOLATILE
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
AC_CHECK_TYPES(struct timeval, , ,
[
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
])


dnl LIBRARY FUNCTIONS

AC_CHECK_LIB(gen, basename)
AC_CHECK_FUNCS(arc4random gettimeofday nl_langinfo random setlocale 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

LIBICONV=""
LTLIBICONV=""
INCICONV=""
AM_ICONV
EZ_LIBICONV=""
if test -n "$LTLIBICONV"; then
	EZ_LIBICONV="$LTLIBICONV"
else
	EZ_LIBICONV="$LIBICONV"
fi
XIPH_VAR_PREPEND([XIPH_LIBS], [$EZ_LIBICONV])
XIPH_VAR_APPEND([XIPH_CPPFLAGS], [$INCICONV])


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 libtag_c 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
				], [AC_MSG_RESULT([no])]
			)
		], [
			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
		])

	dnl For static-only archs:
	if test x"$have_taglib" = "xno" -a x"$ac_cv_header_taglib_tag_c_h" = "xyes"; then
		AC_MSG_CHECKING([whether libtag_c works with -ltag -lstdc++ -lz (static arch)])
		TAGLIB_LIBS="${TAGLIB_LIBS} -ltag -lstdc++ -lz"
		LIBS="${TAGLIB_LIBS}"
		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
			]
		)
	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 \
		build-aux/Makefile \
		compat/Makefile \
		compat/sys/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