Merge remote-tracking branch 'remotes/origin/exportvis' into windows+cc

Conflicts (hopefully resolved):
	gtk2_ardour/wscript
	libs/ardour/ardour/audioregion.h
	libs/ardour/ardour/debug.h
	libs/ardour/ardour/directory_names.h
	libs/ardour/ardour/filesystem_paths.h
	libs/ardour/ardour/session_event.h
	libs/gtkmm2ext/gtkmm2ext/utils.h
	libs/panners/1in2out/wscript
	libs/panners/2in2out/wscript
	libs/panners/vbap/wscript
	libs/pbd/pbd/debug.h
	libs/pbd/pbd/file_utils.h
	libs/pbd/pbd/pathexpand.h
	libs/pbd/pbd/ringbuffer.h
	libs/pbd/pbd/ringbufferNPT.h
	libs/pbd/pbd/search_path.h
	libs/pbd/pbd/stacktrace.h
	libs/pbd/pbd/uuid.h
	libs/pbd/pbd/uuid_boost.h
	libs/surfaces/control_protocol/control_protocol/basic_ui.h
	libs/surfaces/control_protocol/control_protocol/control_protocol.h

25 files changed, 126 insertions, 34 deletions

diff --git a/libs/audiographer/audiographer/broadcast_info.h b/libs/audiographer/audiographer/broadcast_info.h
index 819978f8c6..66b10bd9f7 100644
--- a/libs/audiographer/audiographer/broadcast_info.h
+++ b/libs/audiographer/audiographer/broadcast_info.h
@@ -28,12 +28,14 @@
 
 #include <sndfile.h>
 
+#include "audiographer/visibility.h"
+
 namespace AudioGrapher
 {
 
-class SndfileHandle;	
+class LIBAUDIOGRAPHER_API SndfileHandle;	
 
-class BroadcastInfo
+class LIBAUDIOGRAPHER_API BroadcastInfo
 {
   public:
 
diff --git a/libs/audiographer/audiographer/debug_utils.h b/libs/audiographer/audiographer/debug_utils.h
index 693c50064c..a8c63e85b6 100644
--- a/libs/audiographer/audiographer/debug_utils.h
+++ b/libs/audiographer/audiographer/debug_utils.h
@@ -11,11 +11,13 @@
 #include <cstdlib>
 #endif
 
+#include "audiographer/visibility.h"
+
 namespace AudioGrapher
 {
 
 /// Utilities for debugging
-struct DebugUtils
+struct LIBAUDIOGRAPHER_API DebugUtils
 {
 	/// Returns the demangled name of the object passed as the parameter
 	template<typename T>
diff --git a/libs/audiographer/audiographer/debuggable.h b/libs/audiographer/audiographer/debuggable.h
index 79e0f80dd3..fc03d1e68d 100644
--- a/libs/audiographer/audiographer/debuggable.h
+++ b/libs/audiographer/audiographer/debuggable.h
@@ -7,11 +7,13 @@
 
 #include <iostream>
 
+#include "audiographer/visibility.h"
+
 namespace AudioGrapher
 {
 
 /// Compile time defined debug level
-enum DebugLevel
+enum LIBAUDIOGRAPHER_API DebugLevel
 {
 	DebugNone,     ///< Disabled
 	DebugObject,   ///< Object level stuff, ctors, initalizers etc.
@@ -36,7 +38,7 @@ enum DebugLevel
   * logical and (short-circuiting).
   */
 template<DebugLevel L = DEFAULT_DEBUG_LEVEL>
-class Debuggable
+class LIBAUDIOGRAPHER_API Debuggable
 {
   protected:
 	Debuggable(std::ostream & debug_stream = std::cerr)
diff --git a/libs/audiographer/audiographer/exception.h b/libs/audiographer/audiographer/exception.h
index 5583a2620b..b5141cb4c2 100644
--- a/libs/audiographer/audiographer/exception.h
+++ b/libs/audiographer/audiographer/exception.h
@@ -6,6 +6,7 @@
 
 #include <boost/format.hpp>
 
+#include "audiographer/visibility.h"
 #include "audiographer/debug_utils.h"
 
 namespace AudioGrapher
@@ -14,7 +15,7 @@ namespace AudioGrapher
 /** AudioGrapher Exception class.
   * Automatically tells which class an exception was thrown from.
   */
-class Exception : public std::exception
+class LIBAUDIOGRAPHER_API Exception : public std::exception
 {
   public:
 	template<typename T>
@@ -38,4 +39,4 @@ class Exception : public std::exception
 
 } // namespace AudioGrapher
 
-#endif // AUDIOGRAPHER_EXCEPTION_H
\ No newline at end of file
+#endif // AUDIOGRAPHER_EXCEPTION_H
diff --git a/libs/audiographer/audiographer/flag_debuggable.h b/libs/audiographer/audiographer/flag_debuggable.h
index b70480cd91..5cb948a3d0 100644
--- a/libs/audiographer/audiographer/flag_debuggable.h
+++ b/libs/audiographer/audiographer/flag_debuggable.h
@@ -1,6 +1,7 @@
 #ifndef AUDIOGRAPHER_FLAG_DEBUGGABLE_H
 #define AUDIOGRAPHER_FLAG_DEBUGGABLE_H
 
+#include "audiographer/visibility.h"
 #include "debuggable.h"
 #include "debug_utils.h"
 #include "process_context.h"
@@ -13,7 +14,7 @@ namespace AudioGrapher
 
 /// A debugging class for nodes that support a certain set of flags.
 template<DebugLevel L = DEFAULT_DEBUG_LEVEL>
-class FlagDebuggable : public Debuggable<L>
+class LIBAUDIOGRAPHER_API FlagDebuggable : public Debuggable<L>
 {
   public:
 	typedef FlagField::Flag Flag;
diff --git a/libs/audiographer/audiographer/flag_field.h b/libs/audiographer/audiographer/flag_field.h
index df81aa1766..34ab5efdd6 100644
--- a/libs/audiographer/audiographer/flag_field.h
+++ b/libs/audiographer/audiographer/flag_field.h
@@ -7,12 +7,14 @@
 
 #include <boost/operators.hpp>
 
+#include "audiographer/visibility.h"
+
 namespace AudioGrapher {
 
 /** Flag field capable of holding 32 flags.
   * Easily grown in size to 64 flags by changing storage_type.
   */
-class FlagField
+class LIBAUDIOGRAPHER_API FlagField
   : public boost::less_than_comparable<FlagField>
   , boost::equivalent<FlagField>
   , boost::equality_comparable<FlagField>
@@ -103,4 +105,4 @@ class FlagField
 
 } // namespace
 
-#endif // AUDIOGRAPHER_FLAG_FIELD_H
\ No newline at end of file
+#endif // AUDIOGRAPHER_FLAG_FIELD_H
diff --git a/libs/audiographer/audiographer/general/chunker.h b/libs/audiographer/audiographer/general/chunker.h
index cc46aa4575..2ff766fef3 100644
--- a/libs/audiographer/audiographer/general/chunker.h
+++ b/libs/audiographer/audiographer/general/chunker.h
@@ -1,6 +1,7 @@
 #ifndef AUDIOGRAPHER_CHUNKER_H
 #define AUDIOGRAPHER_CHUNKER_H
 
+#include "audiographer/visibility.h"
 #include "audiographer/flag_debuggable.h"
 #include "audiographer/sink.h"
 #include "audiographer/type_utils.h"
@@ -11,7 +12,7 @@ namespace AudioGrapher
 
 /// A class that chunks process cycles into equal sized frames
 template<typename T = DefaultSampleType>
-class Chunker
+class LIBAUDIOGRAPHER_API Chunker
   : public ListedSource<T>
   , public Sink<T>
   , public FlagDebuggable<>
diff --git a/libs/audiographer/audiographer/general/deinterleaver.h b/libs/audiographer/audiographer/general/deinterleaver.h
index 96d77b1f7b..f9374b67ad 100644
--- a/libs/audiographer/audiographer/general/deinterleaver.h
+++ b/libs/audiographer/audiographer/general/deinterleaver.h
@@ -1,6 +1,7 @@
 #ifndef AUDIOGRAPHER_DEINTERLEAVER_H
 #define AUDIOGRAPHER_DEINTERLEAVER_H
 
+#include "audiographer/visibility.h"
 #include "audiographer/types.h"
 #include "audiographer/source.h"
 #include "audiographer/sink.h"
@@ -14,7 +15,7 @@ namespace AudioGrapher
 
 /// Converts on stream of interleaved data to many streams of uninterleaved data.
 template<typename T = DefaultSampleType>
-class DeInterleaver
+class LIBAUDIOGRAPHER_API DeInterleaver
   : public Sink<T>
   , public Throwing<>
 {
diff --git a/libs/audiographer/audiographer/general/interleaver.h b/libs/audiographer/audiographer/general/interleaver.h
index 924c1d04a5..b0f0efdc66 100644
--- a/libs/audiographer/audiographer/general/interleaver.h
+++ b/libs/audiographer/audiographer/general/interleaver.h
@@ -1,6 +1,7 @@
 #ifndef AUDIOGRAPHER_INTERLEAVER_H
 #define AUDIOGRAPHER_INTERLEAVER_H
 
+#include "audiographer/visibility.h"
 #include "audiographer/types.h"
 #include "audiographer/sink.h"
 #include "audiographer/exception.h"
@@ -15,7 +16,7 @@ namespace AudioGrapher
 
 /// Interleaves many streams of non-interleaved data into one interleaved stream
 template<typename T = DefaultSampleType>
-class Interleaver
+class LIBAUDIOGRAPHER_API Interleaver
   : public ListedSource<T>
   , public Throwing<>
 {
diff --git a/libs/audiographer/audiographer/general/normalizer.h b/libs/audiographer/audiographer/general/normalizer.h
index 48d0fe8b0b..86fe26b790 100644
--- a/libs/audiographer/audiographer/general/normalizer.h
+++ b/libs/audiographer/audiographer/general/normalizer.h
@@ -1,6 +1,7 @@
 #ifndef AUDIOGRAPHER_NORMALIZER_H
 #define AUDIOGRAPHER_NORMALIZER_H
 
+#include "audiographer/visibility.h"
 #include "audiographer/sink.h"
 #include "audiographer/routines.h"
 #include "audiographer/utils/listed_source.h"
@@ -11,7 +12,7 @@ namespace AudioGrapher
 {
 
 /// A class for normalizing to a specified target in dB
-class Normalizer
+class LIBAUDIOGRAPHER_API Normalizer
   : public ListedSource<float>
   , public Sink<float>
   , public Throwing<>
diff --git a/libs/audiographer/audiographer/general/peak_reader.h b/libs/audiographer/audiographer/general/peak_reader.h
index a257621cde..208a8989df 100644
--- a/libs/audiographer/audiographer/general/peak_reader.h
+++ b/libs/audiographer/audiographer/general/peak_reader.h
@@ -1,6 +1,7 @@
 #ifndef AUDIOGRAPHER_PEAK_READER_H
 #define AUDIOGRAPHER_PEAK_READER_H
 
+#include "audiographer/visibility.h"
 #include "audiographer/sink.h"
 #include "audiographer/routines.h"
 #include "audiographer/utils/listed_source.h"
@@ -9,7 +10,7 @@ namespace AudioGrapher
 {
 
 /// A class that reads the maximum value from a stream
-class PeakReader : public ListedSource<float>, public Sink<float>
+class LIBAUDIOGRAPHER_API PeakReader : public ListedSource<float>, public Sink<float>
 {
   public:
 	/// Constructor \n RT safe
diff --git a/libs/audiographer/audiographer/general/sample_format_converter.h b/libs/audiographer/audiographer/general/sample_format_converter.h
index a200f37825..62500d42dc 100644
--- a/libs/audiographer/audiographer/general/sample_format_converter.h
+++ b/libs/audiographer/audiographer/general/sample_format_converter.h
@@ -1,6 +1,7 @@
 #ifndef AUDIOGRAPHER_SAMPLE_FORMAT_CONVERTER_H
 #define AUDIOGRAPHER_SAMPLE_FORMAT_CONVERTER_H
 
+#include "audiographer/visibility.h"
 #include "audiographer/sink.h"
 #include "audiographer/utils/listed_source.h"
 #include "private/gdither/gdither_types.h"
@@ -9,7 +10,7 @@ namespace AudioGrapher
 {
 
 /// Dither types from the gdither library
-enum DitherType
+enum LIBAUDIOGRAPHER_API DitherType
 {
 	D_None   = GDitherNone,   ///< No didtering
 	D_Rect   = GDitherRect,   ///< Rectangular dithering, i.e. white noise
@@ -21,7 +22,7 @@ enum DitherType
   * This class can only convert floats to either \a float, \a int32_t, \a int16_t, or \a uint8_t 
   */
 template <typename TOut>
-class SampleFormatConverter
+class LIBAUDIOGRAPHER_API SampleFormatConverter
   : public Sink<float>
   , public ListedSource<TOut>
   , public Throwing<>
diff --git a/libs/audiographer/audiographer/general/silence_trimmer.h b/libs/audiographer/audiographer/general/silence_trimmer.h
index a653bfe215..8a8dd920f5 100644
--- a/libs/audiographer/audiographer/general/silence_trimmer.h
+++ b/libs/audiographer/audiographer/general/silence_trimmer.h
@@ -1,6 +1,7 @@
 #ifndef AUDIOGRAPHER_SILENCE_TRIMMER_H
 #define AUDIOGRAPHER_SILENCE_TRIMMER_H
 
+#include "audiographer/visibility.h"
 #include "audiographer/debug_utils.h"
 #include "audiographer/flag_debuggable.h"
 #include "audiographer/sink.h"
@@ -13,7 +14,7 @@ namespace AudioGrapher {
 
 /// Removes and adds silent frames to beginning and/or end of stream
 template<typename T = DefaultSampleType>
-class SilenceTrimmer
+class LIBAUDIOGRAPHER_API SilenceTrimmer
   : public ListedSource<T>
   , public Sink<T>
   , public FlagDebuggable<>
diff --git a/libs/audiographer/audiographer/general/sr_converter.h b/libs/audiographer/audiographer/general/sr_converter.h
index a3298bbf97..0cbe3bd294 100644
--- a/libs/audiographer/audiographer/general/sr_converter.h
+++ b/libs/audiographer/audiographer/general/sr_converter.h
@@ -3,6 +3,7 @@
 
 #include <samplerate.h>
 
+#include "audiographer/visibility.h"
 #include "audiographer/flag_debuggable.h"
 #include "audiographer/sink.h"
 #include "audiographer/throwing.h"
@@ -13,7 +14,7 @@ namespace AudioGrapher
 {
 
 /// Samplerate converter
-class SampleRateConverter
+class LIBAUDIOGRAPHER_API SampleRateConverter
   : public ListedSource<float>
   , public Sink<float>
   , public FlagDebuggable<>
diff --git a/libs/audiographer/audiographer/general/threader.h b/libs/audiographer/audiographer/general/threader.h
index d1e11c00e1..98c6145ee9 100644
--- a/libs/audiographer/audiographer/general/threader.h
+++ b/libs/audiographer/audiographer/general/threader.h
@@ -10,6 +10,7 @@
 #include <vector>
 #include <algorithm>
 
+#include "audiographer/visibility.h"
 #include "audiographer/source.h"
 #include "audiographer/sink.h"
 #include "audiographer/exception.h"
@@ -18,7 +19,7 @@ namespace AudioGrapher
 {
 
 /// Class that stores exceptions thrown from different threads
-class ThreaderException : public Exception
+class LIBAUDIOGRAPHER_API ThreaderException : public Exception
 {
   public:
 	template<typename T>
@@ -32,7 +33,7 @@ class ThreaderException : public Exception
 
 /// Class for distributing processing across several threads
 template <typename T = DefaultSampleType>
-class Threader : public Source<T>, public Sink<T>
+class LIBAUDIOGRAPHER_API Threader : public Source<T>, public Sink<T>
 {
   private:
 	typedef std::vector<typename Source<T>::SinkPtr> OutputVec;
diff --git a/libs/audiographer/audiographer/process_context.h b/libs/audiographer/audiographer/process_context.h
index 15128ab4ea..61b95a2aa4 100644
--- a/libs/audiographer/audiographer/process_context.h
+++ b/libs/audiographer/audiographer/process_context.h
@@ -5,6 +5,7 @@
 #include <boost/type_traits.hpp>
 #include <boost/format.hpp>
 
+#include "audiographer/visibility.h"
 #include "exception.h"
 #include "debug_utils.h"
 #include "types.h"
@@ -21,7 +22,7 @@ namespace AudioGrapher
  */
 
 template <typename T = DefaultSampleType>
-class ProcessContext
+class LIBAUDIOGRAPHER_API ProcessContext
   : public Throwing<>
 {
 	// Support older compilers that don't support template base class initialization without template parameters
@@ -125,7 +126,7 @@ protected:
 
 /// A process context that allocates and owns it's data buffer
 template <typename T = DefaultSampleType>
-class AllocatingProcessContext : public ProcessContext<T>
+class LIBAUDIOGRAPHER_API AllocatingProcessContext : public ProcessContext<T>
 {
 public:
 	/// Allocates uninitialized memory
@@ -162,7 +163,7 @@ public:
 
 /// A wrapper for a const ProcesContext which can be created from const data
 template <typename T = DefaultSampleType>
-class ConstProcessContext
+class LIBAUDIOGRAPHER_API ConstProcessContext
 {
   public:
 	/// Basic constructor with data, frame and channel count
diff --git a/libs/audiographer/audiographer/routines.h b/libs/audiographer/audiographer/routines.h
index b3b7f0921b..4ab3bc5fb5 100644
--- a/libs/audiographer/audiographer/routines.h
+++ b/libs/audiographer/audiographer/routines.h
@@ -5,11 +5,13 @@
 
 #include <cmath>
 
+#include "audiographer/visibility.h"
+
 namespace AudioGrapher
 {
 
 /// Allows overriding some routines with more efficient ones.
-class Routines
+class LIBAUDIOGRAPHER_API Routines
 {
   public:
 	typedef uint32_t uint_type;
diff --git a/libs/audiographer/audiographer/sink.h b/libs/audiographer/audiographer/sink.h
index 0a7004464e..84f7e12e40 100644
--- a/libs/audiographer/audiographer/sink.h
+++ b/libs/audiographer/audiographer/sink.h
@@ -5,6 +5,8 @@
 
 #include "process_context.h"
 
+#include "audiographer/visibility.h"
+
 namespace AudioGrapher
 {
 
@@ -12,7 +14,7 @@ namespace AudioGrapher
   * This is a pure virtual interface for all data sinks in AudioGrapher
   */
 template <typename T>
-class Sink  {
+class LIBAUDIOGRAPHER_API Sink  {
   public:
 	virtual ~Sink () {}
 	
diff --git a/libs/audiographer/audiographer/source.h b/libs/audiographer/audiographer/source.h
index deefb900ee..9a3f80719b 100644
--- a/libs/audiographer/audiographer/source.h
+++ b/libs/audiographer/audiographer/source.h
@@ -6,6 +6,8 @@
 
 #include <boost/shared_ptr.hpp>
 
+#include "audiographer/visibility.h"
+
 namespace AudioGrapher
 {
 
@@ -13,7 +15,7 @@ namespace AudioGrapher
   * This is a pure virtual interface for all data sources in AudioGrapher
   */
 template<typename T>
-class Source
+class LIBAUDIOGRAPHER_API Source
 {
   public:
 	virtual ~Source () { }
diff --git a/libs/audiographer/audiographer/throwing.h b/libs/audiographer/audiographer/throwing.h
index eefade1db0..e02958a521 100644
--- a/libs/audiographer/audiographer/throwing.h
+++ b/libs/audiographer/audiographer/throwing.h
@@ -5,6 +5,8 @@
 #define DEFAULT_THROW_LEVEL ThrowStrict
 #endif
 
+#include "audiographer/visibility.h"
+
 namespace AudioGrapher
 {
 
@@ -14,7 +16,7 @@ namespace AudioGrapher
   * However, if you want ultra-optimized code and/or don't care about handling
   * error situations, feel free to use whatever you want.
   */
-enum ThrowLevel
+enum LIBAUDIOGRAPHER_API ThrowLevel
 {
 	ThrowNone,     ///< Not allowed to throw
 	ThrowObject,   ///< Object level stuff, ctors, initalizers etc.
@@ -38,7 +40,7 @@ enum ThrowLevel
   * logical and (short-circuiting).
   */
 template<ThrowLevel L = DEFAULT_THROW_LEVEL>
-class Throwing
+class LIBAUDIOGRAPHER_API Throwing
 {
   protected:
 	Throwing() {}
diff --git a/libs/audiographer/audiographer/type_utils.h b/libs/audiographer/audiographer/type_utils.h
index 1d4754dee9..a7c38fc660 100644
--- a/libs/audiographer/audiographer/type_utils.h
+++ b/libs/audiographer/audiographer/type_utils.h
@@ -1,18 +1,20 @@
 #ifndef AUDIOGRAPHER_TYPE_UTILS_H
 #define AUDIOGRAPHER_TYPE_UTILS_H
 
-#include "audiographer/types.h"
 #include <boost/static_assert.hpp>
 #include <boost/type_traits.hpp>
 #include <memory>
 #include <algorithm>
 #include <cstring>
 
+#include "audiographer/visibility.h"
+#include "audiographer/types.h"
+
 namespace AudioGrapher
 {
 
 /// Non-template base class for TypeUtils
-class TypeUtilsBase
+class LIBAUDIOGRAPHER_API TypeUtilsBase
 {
   protected:
 	
@@ -27,7 +29,7 @@ class TypeUtilsBase
 
 /// Utilities for initializing, copying, moving, etc. data
 template<typename T = DefaultSampleType>
-class TypeUtils : private TypeUtilsBase
+class LIBAUDIOGRAPHER_API TypeUtils : private TypeUtilsBase
 {
 	BOOST_STATIC_ASSERT (boost::has_trivial_destructor<T>::value);
 	
diff --git a/libs/audiographer/audiographer/types.h b/libs/audiographer/audiographer/types.h
index ae98cde7bd..4288dce0c6 100644
--- a/libs/audiographer/audiographer/types.h
+++ b/libs/audiographer/audiographer/types.h
@@ -3,6 +3,8 @@
 
 #include <stdint.h>
 
+#include "audiographer/visibility.h"
+
 namespace AudioGrapher {
 
 /* XXX: copied from libardour */	
diff --git a/libs/audiographer/audiographer/utils/identity_vertex.h b/libs/audiographer/audiographer/utils/identity_vertex.h
index 147939a7c5..1d7ed80697 100644
--- a/libs/audiographer/audiographer/utils/identity_vertex.h
+++ b/libs/audiographer/audiographer/utils/identity_vertex.h
@@ -1,6 +1,8 @@
 #ifndef AUDIOGRAPHER_IDENTITY_VERTEX_H
 #define AUDIOGRAPHER_IDENTITY_VERTEX_H
 
+#include "audiographer/visibility.h"
+#include "audiographer/types.h"
 #include "audiographer/utils/listed_source.h"
 #include "audiographer/sink.h"
 
@@ -9,7 +11,7 @@ namespace AudioGrapher
 
 /// Outputs its input directly to a number of Sinks
 template<typename T = DefaultSampleType>
-class IdentityVertex : public ListedSource<T>, Sink<T>
+class LIBAUDIOGRAPHER_API IdentityVertex : public ListedSource<T>, Sink<T>
 {
   public:
 	void process (ProcessContext<T> const & c) { ListedSource<T>::output(c); }
diff --git a/libs/audiographer/audiographer/utils/listed_source.h b/libs/audiographer/audiographer/utils/listed_source.h
index b030281207..6ceab6b27f 100644
--- a/libs/audiographer/audiographer/utils/listed_source.h
+++ b/libs/audiographer/audiographer/utils/listed_source.h
@@ -1,6 +1,8 @@
 #ifndef AUDIOGRAPHER_LISTED_SOURCE_H
 #define AUDIOGRAPHER_LISTED_SOURCE_H
 
+#include "audiographer/visibility.h"
+#include "audiographer/types.h"
 #include "audiographer/types.h"
 #include "audiographer/source.h"
 
@@ -11,7 +13,7 @@ namespace AudioGrapher
 
 /// An generic \a Source that uses a \a std::list for managing outputs
 template<typename T = DefaultSampleType>
-class ListedSource : public Source<T>
+class LIBAUDIOGRAPHER_API ListedSource : public Source<T>
 {
   public:
 	void add_output (typename Source<T>::SinkPtr output) { outputs.push_back(output); }
diff --git a/libs/audiographer/audiographer/visibility.h b/libs/audiographer/audiographer/visibility.h
new file mode 100644
index 0000000000..8c149f9efd
--- /dev/null
+++ b/libs/audiographer/audiographer/visibility.h
@@ -0,0 +1,56 @@
+/*
+    Copyright (C) 2013 Paul Davis
+
+    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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __libaudiographer_visibility_h__
+#define __libaudiographer_visibility_h__
+
+/* _WIN32 is defined by most compilers targetting Windows, but within the
+ * audiographer source tree, we also define COMPILER_MSVC or COMPILER_MINGW depending
+ * on how a Windows build is built.
+ */
+
+#if defined _WIN32 || defined __CYGWIN__ || defined(COMPILER_MSVC) || defined(COMPILER_MINGW)
+  #define LIBAUDIOGRAPHER_DLL_IMPORT __declspec(dllimport)
+  #define LIBAUDIOGRAPHER_DLL_EXPORT __declspec(dllexport)
+  #define LIBAUDIOGRAPHER_DLL_LOCAL
+#else
+  #if __GNUC__ >= 4
+    #define LIBAUDIOGRAPHER_DLL_IMPORT __attribute__ ((visibility ("default")))
+    #define LIBAUDIOGRAPHER_DLL_EXPORT __attribute__ ((visibility ("default")))
+    #define LIBAUDIOGRAPHER_DLL_LOCAL  __attribute__ ((visibility ("hidden")))
+  #else
+    #define LIBAUDIOGRAPHER_DLL_IMPORT
+    #define LIBAUDIOGRAPHER_DLL_EXPORT
+    #define LIBAUDIOGRAPHER_DLL_LOCAL
+  #endif
+#endif
+
+#ifdef LIBAUDIOGRAPHER_DLL // libaudiographer is a DLL
+#ifdef LIBAUDIOGRAPHER_DLL_EXPORTS // defined if we are building the libaudiographer DLL (instead of using it)
+    #define LIBAUDIOGRAPHER_API LIBAUDIOGRAPHER_DLL_EXPORT
+#else
+    #define LIBAUDIOGRAPHER_API LIBAUDIOGRAPHER_DLL_IMPORT
+#endif 
+#define     LIBAUDIOGRAPHER_LOCAL LIBAUDIOGRAPHER_DLL_LOCAL
+#else /* static lib, not DLL */
+#define LIBAUDIOGRAPHER_API
+#define LIBAUDIOGRAPHER_LOCAL
+#endif
+
+#endif /* __libaudiographer_visibility_h__ */