Merge "update nestegg"

nestegg/.gitignore

-*.lo
-*.o
-*.swp
-*~
-.deps
-.dirstamp
-.libs
-Makefile
-Makefile.in
-_stdint.h
-aclocal.m4
-autom4te.cache
-compile
-config.guess
-config.h
-config.h.in
-config.log
-config.status
-config.sub
-configure
-depcomp
-docs/Doxyfile
-docs/doxygen-build.stamp
-docs/html
-install-sh
-libtool
-ltmain.sh
-m4/libtool.m4
-m4/ltoptions.m4
-m4/ltsugar.m4
-m4/ltversion.m4
-m4/lt~obsolete.m4
-missing
-nestegg-uninstalled.pc
-nestegg.pc
-src/.dirstamp
-src/libnestegg.la
-stamp-h1
-test/test
-include/nestegg/nestegg-stdint.h

nestegg/0001-include-paths.diff

+diff --git a/nestegg/halloc/src/halloc.c b/nestegg/halloc/src/halloc.c
+index 5758fc0..837b3ff 100644
+--- a/nestegg/halloc/src/halloc.c
++++ b/nestegg/halloc/src/halloc.c
+@@ -15,7 +15,7 @@
+ #include <stdlib.h>  /* realloc */
+ #include <string.h>  /* memset & co */
+ 
+-#include "halloc.h"
++#include "nestegg/halloc/halloc.h"
+ #include "align.h"
+ #include "hlist.h"
+ 
+diff --git a/nestegg/include/nestegg/nestegg.h b/nestegg/include/nestegg/nestegg.h
+index ff13728..c18d1d3 100644
+--- a/nestegg/include/nestegg/nestegg.h
++++ b/nestegg/include/nestegg/nestegg.h
+@@ -7,7 +7,7 @@
+ #if !defined(NESTEGG_671cac2a_365d_ed69_d7a3_4491d3538d79)
+ #define NESTEGG_671cac2a_365d_ed69_d7a3_4491d3538d79
+ 
+-#include <nestegg/nestegg-stdint.h>
++#include "vpx/vpx_integer.h"
+ 
+ #if defined(__cplusplus)
+ extern "C" {
+diff --git a/nestegg/src/nestegg.c b/nestegg/src/nestegg.c
+index daf1eed..4fb10e7 100644
+--- a/nestegg/src/nestegg.c
++++ b/nestegg/src/nestegg.c
+@@ -8,8 +8,8 @@
+ #include <stdlib.h>
+ #include <string.h>
+ 
+-#include "halloc.h"
+-#include "nestegg/nestegg.h"
++#include "nestegg/halloc/halloc.h"
++#include "nestegg/include/nestegg/nestegg.h"
+ 
+ /* EBML Elements */
+ #define ID_EBML                 0x1a45dfa3

nestegg/0002-ne_read_simple-uninitialized_variable.diff

+diff --git a/nestegg/src/nestegg.c b/nestegg/src/nestegg.c
+index 4fb10e7..b6bc460 100644
+--- a/nestegg/src/nestegg.c
++++ b/nestegg/src/nestegg.c
+@@ -934,7 +934,7 @@ static int
+ ne_read_simple(nestegg * ctx, struct ebml_element_desc * desc, size_t length)
+ {
+   struct ebml_type * storage;
+-  int r;
++  int r = 0;
+ 
+   storage = (struct ebml_type *) (ctx->ancestor->data + desc->offset);
+ 
+@@ -968,7 +968,6 @@ ne_read_simple(nestegg * ctx, struct ebml_element_desc * desc, size_t length)
+   case TYPE_MASTER:
+   case TYPE_UNKNOWN:
+     assert(0);
+-    r = 0;
+     break;
+   }
+ 

nestegg/AUTHORS

 Matthew Gregan <kinetik@flim.org>
+Steve Workman <sjhworkman@gmail.com>
+Paul Adenot <paul@paul.cx>

nestegg/Makefile.am

-AUTOMAKE_OPTIONS = foreign 1.11 no-dist-gzip dist-bzip2 subdir-objects
-ACLOCAL_AMFLAGS = -I m4
-
-INCLUDES = -I$(top_srcdir)/include -I. -I$(top_srcdir)/halloc
-AM_CFLAGS = -ansi -pedantic -Wall -Wextra -Wno-long-long -O0 -g
-
-SUBDIRS = docs
-
-EXTRA_DIST = \
-	AUTHORS README LICENSE \
-	nestegg-uninstalled.pc.in \
-	m4/as-ac-expand.m4 \
-	m4/pkg.m4 \
-	m4/ax_create_stdint_h.m4 \
-	halloc/src/halloc.c \
-	halloc/halloc.h \
-	halloc/src/align.h \
-	halloc/src/hlist.h \
-	halloc/src/macros.h
-
-pkgconfigdir = $(libdir)/pkgconfig
-pkgconfig_DATA = nestegg.pc
-
-nesteggincludedir = $(includedir)/nestegg
-nestegginclude_HEADERS = include/nestegg/nestegg.h include/nestegg/nestegg-stdint.h
-
-lib_LTLIBRARIES = src/libnestegg.la
-
-src_libnestegg_la_SOURCES = \
-	src/nestegg.c \
-	halloc/src/halloc.c \
-	halloc/halloc.h \
-	halloc/src/align.h \
-	halloc/src/hlist.h \
-	halloc/src/macros.h
-
-check_PROGRAMS = test/test
-
-test_test_SOURCES = test/test.c
-test_test_LDADD = src/libnestegg.la
-
-DISTCLEANFILES = include/nestegg/nestegg-stdint.h
-
-dist-hook:
-	find $(distdir) -type d -name '.git' | xargs rm -rf
-
-debug:
-	$(MAKE) all CFLAGS="@DEBUG@"
-
-profile:
-	$(MAKE) all CFLAGS="@PROFILE@"

nestegg/README.webm

+URL: https://github.com/kinetiknz/nestegg.git
+Version: f46223191d8116a36bf299b5b9793fcb798417b1
+License: ISC-style
+License File: LICENSE
+
+Description:
+The source under the halloc/ directory is licensed under a BSD license. See
+halloc/halloc.h for details.
+
+Local Modifications:
+- delete unnecessary docs and build files
+- nestegg/0001-include-paths.diff
+  include path modifications for the libvpx build system
+- 0002-ne_read_simple-uninitialized_variable.diff
+  fixes:
+nestegg.c|975 col 6| warning: ‘r’ may be used uninitialized in this function [-Wuninitialized]

nestegg/configure.ac

-dnl ------------------------------------------------
-dnl Initialization and Versioning
-dnl ------------------------------------------------
-
-AC_INIT(libnestegg,[0.1git])
-
-AC_CANONICAL_HOST
-AC_CANONICAL_TARGET
-
-AC_CONFIG_MACRO_DIR([m4])
-
-AM_CONFIG_HEADER([config.h])
-AC_CONFIG_SRCDIR([src/nestegg.c])
-AM_INIT_AUTOMAKE
-
-m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
-
-dnl Library versioning
-dnl CURRENT, REVISION, AGE
-dnl - library source changed -> increment REVISION
-dnl - interfaces added/removed/changed -> increment CURRENT, REVISION = 0
-dnl - interfaces added -> increment AGE
-dnl - interfaces removed -> AGE = 0
-
-NESTEGG_CURRENT=0
-NESTEGG_REVISION=0
-NESTEGG_AGE=1
-AC_SUBST(NESTEGG_CURRENT)
-AC_SUBST(NESTEGG_REVISION)
-AC_SUBST(NESTEGG_AGE)
-
-
-dnl --------------------------------------------------  
-dnl Check for programs
-dnl --------------------------------------------------  
-
-dnl save $CFLAGS since AC_PROG_CC likes to insert "-g -O2"
-dnl if $CFLAGS is blank
-cflags_save="$CFLAGS"
-AC_PROG_CC
-AC_PROG_CPP
-CFLAGS="$cflags_save"
-
-AM_PROG_CC_C_O
-AC_LIBTOOL_WIN32_DLL
-AM_PROG_LIBTOOL
-
-dnl Check for doxygen
-AC_ARG_ENABLE([doc],
-	AS_HELP_STRING([--enable-doc], [Build API documentation]),
-	[ac_enable_doc=$enableval], [ac_enable_doc=auto])
-
-if test "x$ac_enable_doc" != "xno"; then
-	AC_CHECK_PROG(HAVE_DOXYGEN, doxygen, true, false)
-
-	if test "x$HAVE_DOXYGEN" = "xfalse" -a "x$ac_enable_doc" = "xyes"; then
-		AC_MSG_ERROR([*** API documentation explicitly requested but Doxygen not found])
-	fi
-else
-	HAVE_DOXYGEN=false
-fi
-AM_CONDITIONAL(HAVE_DOXYGEN,$HAVE_DOXYGEN)
-if test $HAVE_DOXYGEN = "false"; then
-        AC_MSG_WARN([*** doxygen not found, API documentation will not be built])
-fi
-
-# Generate portable stdint.h replacement
-AX_CREATE_STDINT_H(include/nestegg/nestegg-stdint.h)
-
-# Test whenever ld supports -version-script
-AC_PROG_LD
-AC_PROG_LD_GNU
-AC_MSG_CHECKING([how to control symbol export])
-
-dnl --------------------------------------------------
-dnl Do substitutions
-dnl --------------------------------------------------
-
-AC_SUBST(DEBUG)
-AC_SUBST(PROFILE)
-
-AC_OUTPUT([
-  Makefile 
-  docs/Makefile
-  docs/Doxyfile
-  nestegg.pc
-  nestegg-uninstalled.pc
-])
-
-AS_AC_EXPAND(LIBDIR, ${libdir})
-AS_AC_EXPAND(INCLUDEDIR, ${includedir})
-AS_AC_EXPAND(BINDIR, ${bindir})
-AS_AC_EXPAND(DOCDIR, ${docdir})
-
-if test $HAVE_DOXYGEN = "false"; then
-  doc_build="no"
-else
-  doc_build="yes"
-fi
-
-AC_MSG_RESULT([
-------------------------------------------------------------------------
-  $PACKAGE $VERSION:  Automatic configuration OK.
-
-  General configuration:
-
-    API Documentation: .......... ${doc_build}
-
-  Installation paths:
-
-    libnestegg: .................. ${LIBDIR}
-    C header files: .............. ${INCLUDEDIR}/nestegg
-    Documentation: ............... ${DOCDIR}
-
-  Building:
-
-    Type 'make' to compile $PACKAGE.
-
-    Type 'make install' to install $PACKAGE.
-
-  Example programs will be built but not installed.
-------------------------------------------------------------------------
-])
-

nestegg/docs/Makefile.am

-doc_DATA = doxygen-build.stamp
-
-EXTRA_DIST = Doxyfile.in
-
-if HAVE_DOXYGEN
-doxygen-build.stamp: Doxyfile
-	doxygen
-	touch doxygen-build.stamp
-else
-doxygen-build.stamp:
-	echo "*** Warning: Doxygen not found; documentation will not be built."
-	touch doxygen-build.stamp
-endif
-
-dist_docdir = $(distdir)/libnestegg
-
-dist-hook:
-	if test -d html; then \
-	  mkdir $(dist_docdir); \
-	  echo -n "copying built documenation..."; \
-	  cp -rp html $(dist_docdir)/html; \
-	  echo "OK"; \
-	fi
-
-
-install-data-local: doxygen-build.stamp
-	$(mkinstalldirs) $(DESTDIR)$(docdir)
-	if test -d html; then \
-	  cp -rp html $(DESTDIR)$(docdir)/html; \
-	fi
-
-uninstall-local:
-	rm -rf $(DESTDIR)$(docdir)
-
-clean-local:
-	if test -d html; then rm -rf html; fi
-	if test -f doxygen-build.stamp; then rm -f doxygen-build.stamp; fi
-

nestegg/halloc/src/halloc.c

@@ -15,7 +15,7 @@
 #include <stdlib.h>  /* realloc */
 #include <string.h>  /* memset & co */
 
-#include "../halloc.h"
+#include "nestegg/halloc/halloc.h"
 #include "align.h"
 #include "hlist.h"
 

nestegg/include/nestegg/nestegg.h

@@ -4,12 +4,12 @@
  * This program is made available under an ISC-style license.  See the
  * accompanying file LICENSE for details.
  */
-#ifndef   NESTEGG_671cac2a_365d_ed69_d7a3_4491d3538d79
-#define   NESTEGG_671cac2a_365d_ed69_d7a3_4491d3538d79
+#if !defined(NESTEGG_671cac2a_365d_ed69_d7a3_4491d3538d79)
+#define NESTEGG_671cac2a_365d_ed69_d7a3_4491d3538d79
 
 #include "vpx/vpx_integer.h"
 
-#ifdef __cplusplus
+#if defined(__cplusplus)
 extern "C" {
 #endif
 
@@ -17,10 +17,10 @@ extern "C" {
 
     @section intro Introduction
 
-    This is the documentation fot the <tt>libnestegg</tt> C API.
+    This is the documentation for the <tt>libnestegg</tt> C API.
     <tt>libnestegg</tt> is a demultiplexing library for <a
-    href="http://www.matroska.org/">Matroska</a> and <a
-    href="http://www.webmproject.org/">WebMedia</a> media files.
+    href="http://www.webmproject.org/code/specs/container/">WebM</a>
+    media files.
 
     @section example Example code
 
@@ -68,6 +68,13 @@ extern "C" {
 #define NESTEGG_CODEC_VP8    0 /**< Track uses Google On2 VP8 codec. */
 #define NESTEGG_CODEC_VORBIS 1 /**< Track uses Xiph Vorbis codec. */
 #define NESTEGG_CODEC_VP9    2 /**< Track uses Google On2 VP9 codec. */
+#define NESTEGG_CODEC_OPUS   3 /**< Track uses Xiph Opus codec. */
+
+#define NESTEGG_VIDEO_MONO              0 /**< Track is mono video. */
+#define NESTEGG_VIDEO_STEREO_LEFT_RIGHT 1 /**< Track is side-by-side stereo video.  Left first. */
+#define NESTEGG_VIDEO_STEREO_BOTTOM_TOP 2 /**< Track is top-bottom stereo video.  Right first. */
+#define NESTEGG_VIDEO_STEREO_TOP_BOTTOM 3 /**< Track is top-bottom stereo video.  Left first. */
+#define NESTEGG_VIDEO_STEREO_RIGHT_LEFT 11 /**< Track is side-by-side stereo video.  Right first. */
 
 #define NESTEGG_SEEK_SET 0 /**< Seek offset relative to beginning of stream. */
 #define NESTEGG_SEEK_CUR 1 /**< Seek offset relative to current position in stream. */
@@ -114,6 +121,10 @@ typedef struct {
 
 /** Parameters specific to a video track. */
 typedef struct {
+  unsigned int stereo_mode;    /**< Video mode.  One of #NESTEGG_VIDEO_MONO,
+                                    #NESTEGG_VIDEO_STEREO_LEFT_RIGHT,
+                                    #NESTEGG_VIDEO_STEREO_BOTTOM_TOP, or
+                                    #NESTEGG_VIDEO_STEREO_TOP_BOTTOM. */
   unsigned int width;          /**< Width of the video frame in pixels. */
   unsigned int height;         /**< Height of the video frame in pixels. */
   unsigned int display_width;  /**< Display width of the video frame in pixels. */
@@ -129,6 +140,8 @@ typedef struct {
   double rate;           /**< Sampling rate in Hz. */
   unsigned int channels; /**< Number of audio channels. */
   unsigned int depth;    /**< Bits per sample. */
+  uint64_t  codec_delay; /**< Nanoseconds that must be discarded from the start. */
+  uint64_t  seek_preroll;/**< Nanoseconds that must be discarded after a seek. */
 } nestegg_audio_params;
 
 /** Logging callback function pointer. */
@@ -140,9 +153,10 @@ typedef void (* nestegg_log)(nestegg * context, unsigned int severity, char cons
     @param context  Storage for the new nestegg context.  @see nestegg_destroy
     @param io       User supplied IO context.
     @param callback Optional logging callback function pointer.  May be NULL.
+    @param max_offset Optional maximum offset to be read. Set -1 to ignore.
     @retval  0 Success.
     @retval -1 Error. */
-int nestegg_init(nestegg ** context, nestegg_io io, nestegg_log callback);
+int nestegg_init(nestegg ** context, nestegg_io io, nestegg_log callback, int64_t max_offset);
 
 /** Destroy a nestegg context and free associated memory.
     @param context #nestegg context to be freed.  @see nestegg_init */
@@ -171,6 +185,29 @@ int nestegg_tstamp_scale(nestegg * context, uint64_t * scale);
     @retval -1 Error. */
 int nestegg_track_count(nestegg * context, unsigned int * tracks);
 
+/** Query the start and end offset for a particular cluster.
+    @param context     Stream context initialized by #nestegg_init.
+    @param cluster_num Zero-based cluster number; order they appear in cues.
+    @param max_offset  Optional maximum offset to be read. Set -1 to ignore.
+    @param start_pos   Starting offset of the cluster. -1 means non-existant.
+    @param end_pos     Starting offset of the cluster. -1 means non-existant or
+                       final cluster.
+    @param tstamp      Starting timestamp of the cluster.
+    @retval  0 Success.
+    @retval -1 Error. */
+int nestegg_get_cue_point(nestegg * context, unsigned int cluster_num,
+                          int64_t max_offset, int64_t * start_pos,
+                          int64_t * end_pos, uint64_t * tstamp);
+
+/** Seek to @a offset.  Stream will seek directly to offset.
+    Should be used to seek to the start of a resync point, i.e. cluster; the
+    parser will not be able to understand other offsets.
+    @param context Stream context initialized by #nestegg_init.
+    @param offset  Absolute offset in bytes.
+    @retval  0 Success.
+    @retval -1 Error. */
+int nestegg_offset_seek(nestegg * context, uint64_t offset);
+
 /** Seek @a track to @a tstamp.  Stream seek will terminate at the earliest
     key point in the stream at or before @a tstamp.  Other tracks in the
     stream will output packets with unspecified but nearby timestamps.
@@ -286,7 +323,30 @@ int nestegg_packet_count(nestegg_packet * packet, unsigned int * count);
 int nestegg_packet_data(nestegg_packet * packet, unsigned int item,
                         unsigned char ** data, size_t * length);
 
-#ifdef __cplusplus
+/** Returns discard_padding for given packet
+    @param packet  Packet initialized by #nestegg_read_packet.
+    @param discard_padding pointer to store discard padding in.
+    @retval  0 Success.
+    @retval -1 Error. */
+int nestegg_packet_discard_padding(nestegg_packet * packet,
+                                   int64_t * discard_padding);
+
+/** Query the presence of cues.
+    @param context  Stream context initialized by #nestegg_init.
+    @retval 0 The media has no cues.
+    @retval 1 The media has cues. */
+int nestegg_has_cues(nestegg * context);
+
+/**
+ * Try to determine if the buffer looks like the beginning of a WebM file.
+ *
+ * @param buffer A buffer containing the beginning of a media file.
+ * @param length The size of the buffer.
+ * @retval 0 The file is not a WebM file.
+ * @retval 1 The file is a WebM file. */
+int nestegg_sniff(unsigned char const * buffer, size_t length);
+
+#if defined(__cplusplus)
 }
 #endif
 

nestegg/m4/as-ac-expand.m4

-dnl as-ac-expand.m4 0.2.0
-dnl autostars m4 macro for expanding directories using configure's prefix
-dnl thomas@apestaart.org
-
-dnl AS_AC_EXPAND(VAR, CONFIGURE_VAR)
-dnl example
-dnl AS_AC_EXPAND(SYSCONFDIR, $sysconfdir)
-dnl will set SYSCONFDIR to /usr/local/etc if prefix=/usr/local
-
-AC_DEFUN([AS_AC_EXPAND],
-[
-  EXP_VAR=[$1]
-  FROM_VAR=[$2]
-
-  dnl first expand prefix and exec_prefix if necessary
-  prefix_save=$prefix
-  exec_prefix_save=$exec_prefix
-
-  dnl if no prefix given, then use /usr/local, the default prefix
-  if test "x$prefix" = "xNONE"; then
-    prefix="$ac_default_prefix"
-  fi
-  dnl if no exec_prefix given, then use prefix
-  if test "x$exec_prefix" = "xNONE"; then
-    exec_prefix=$prefix
-  fi
-
-  full_var="$FROM_VAR"
-  dnl loop until it doesn't change anymore
-  while true; do
-    new_full_var="`eval echo $full_var`"
-    if test "x$new_full_var" = "x$full_var"; then break; fi
-    full_var=$new_full_var
-  done
-
-  dnl clean up
-  full_var=$new_full_var
-  AC_SUBST([$1], "$full_var")
-
-  dnl restore prefix and exec_prefix
-  prefix=$prefix_save
-  exec_prefix=$exec_prefix_save
-])

nestegg/m4/pkg.m4

-# pkg.m4 - Macros to locate and utilise pkg-config.            -*- Autoconf -*-
-#
-# Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-#
-# As a special exception to the GNU General Public License, if you
-# distribute this file as part of a program that contains a
-# configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
-
-# PKG_PROG_PKG_CONFIG([MIN-VERSION])
-# ----------------------------------
-AC_DEFUN([PKG_PROG_PKG_CONFIG],
-[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
-m4_pattern_allow([^PKG_CONFIG(_PATH)?$])
-AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])dnl
-if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
-	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
-fi
-if test -n "$PKG_CONFIG"; then
-	_pkg_min_version=m4_default([$1], [0.9.0])
-	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
-	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
-		AC_MSG_RESULT([yes])
-	else
-		AC_MSG_RESULT([no])
-		PKG_CONFIG=""
-	fi
-
-fi[]dnl
-])# PKG_PROG_PKG_CONFIG
-
-# PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
-#
-# Check to see whether a particular set of modules exists.  Similar
-# to PKG_CHECK_MODULES(), but does not set variables or print errors.
-#
-#
-# Similar to PKG_CHECK_MODULES, make sure that the first instance of
-# this or PKG_CHECK_MODULES is called, or make sure to call
-# PKG_CHECK_EXISTS manually
-# --------------------------------------------------------------
-AC_DEFUN([PKG_CHECK_EXISTS],
-[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
-if test -n "$PKG_CONFIG" && \
-    AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
-  m4_ifval([$2], [$2], [:])
-m4_ifvaln([$3], [else
-  $3])dnl
-fi])
-
-
-# _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
-# ---------------------------------------------
-m4_define([_PKG_CONFIG],
-[if test -n "$PKG_CONFIG"; then
-    if test -n "$$1"; then
-        pkg_cv_[]$1="$$1"
-    else
-        PKG_CHECK_EXISTS([$3],
-                         [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],
-			 [pkg_failed=yes])
-    fi
-else
-	pkg_failed=untried
-fi[]dnl
-])# _PKG_CONFIG
-
-# _PKG_SHORT_ERRORS_SUPPORTED
-# -----------------------------
-AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
-[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
-if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
-        _pkg_short_errors_supported=yes
-else
-        _pkg_short_errors_supported=no
-fi[]dnl
-])# _PKG_SHORT_ERRORS_SUPPORTED
-
-
-# PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
-# [ACTION-IF-NOT-FOUND])
-#
-#
-# Note that if there is a possibility the first call to
-# PKG_CHECK_MODULES might not happen, you should be sure to include an
-# explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
-#
-#
-# --------------------------------------------------------------
-AC_DEFUN([PKG_CHECK_MODULES],
-[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl