fix macOS build (following Projucer changes made in Windows, which removed /Applications/JUCE/modules from its headers). move JUCE headers under source control, so that Windows and macOS can both build against same version of JUCE. remove AUv3 target (I think it's an iOS thing, so it will never work with this macOS fluidsynth dylib).

modules/juce_audio_processors/processors/juce_PluginDescription.h

@@ -0,0 +1,158 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2017 - ROLI Ltd.
+
+   JUCE is an open source library subject to commercial or open-source
+   licensing.
+
+   By using JUCE, you agree to the terms of both the JUCE 5 End-User License
+   Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
+   27th April 2017).
+
+   End User License Agreement: www.juce.com/juce-5-licence
+   Privacy Policy: www.juce.com/juce-5-privacy-policy
+
+   Or: You may also use this code under the terms of the GPL v3 (see
+   www.gnu.org/licenses).
+
+   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
+   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
+   DISCLAIMED.
+
+  ==============================================================================
+*/
+
+namespace juce
+{
+
+//==============================================================================
+/**
+    A small class to represent some facts about a particular type of plug-in.
+
+    This class is for storing and managing the details about a plug-in without
+    actually having to load an instance of it.
+
+    A KnownPluginList contains a list of PluginDescription objects.
+
+    @see KnownPluginList
+
+    @tags{Audio}
+*/
+class JUCE_API  PluginDescription
+{
+public:
+    //==============================================================================
+    PluginDescription();
+    PluginDescription (const PluginDescription& other);
+    PluginDescription& operator= (const PluginDescription& other);
+    ~PluginDescription();
+
+    //==============================================================================
+    /** The name of the plug-in. */
+    String name;
+
+    /** A more descriptive name for the plug-in.
+        This may be the same as the 'name' field, but some plug-ins may provide an
+        alternative name.
+    */
+    String descriptiveName;
+
+    /** The plug-in format, e.g. "VST", "AudioUnit", etc. */
+    String pluginFormatName;
+
+    /** A category, such as "Dynamics", "Reverbs", etc. */
+    String category;
+
+    /** The manufacturer. */
+    String manufacturerName;
+
+    /** The version. This string doesn't have any particular format. */
+    String version;
+
+    /** Either the file containing the plug-in module, or some other unique way
+        of identifying it.
+
+        E.g. for an AU, this would be an ID string that the component manager
+        could use to retrieve the plug-in. For a VST, it's the file path.
+    */
+    String fileOrIdentifier;
+
+    /** The last time the plug-in file was changed.
+        This is handy when scanning for new or changed plug-ins.
+    */
+    Time lastFileModTime;
+
+    /** The last time that this information was updated. This would typically have
+        been during a scan when this plugin was first tested or found to have changed.
+    */
+    Time lastInfoUpdateTime;
+
+    /** A unique ID for the plug-in.
+
+        Note that this might not be unique between formats, e.g. a VST and some
+        other format might actually have the same id.
+
+        @see createIdentifierString
+    */
+    int uid;
+
+    /** True if the plug-in identifies itself as a synthesiser. */
+    bool isInstrument;
+
+    /** The number of inputs. */
+    int numInputChannels;
+
+    /** The number of outputs. */
+    int numOutputChannels;
+
+    /** True if the plug-in is part of a multi-type container, e.g. a VST Shell. */
+    bool hasSharedContainer;
+
+    /** Returns true if the two descriptions refer to the same plug-in.
+
+        This isn't quite as simple as them just having the same file (because of
+        shell plug-ins).
+    */
+    bool isDuplicateOf (const PluginDescription& other) const noexcept;
+
+    /** Return true if this description is equivalent to another one which created the
+        given identifier string.
+
+        Note that this isn't quite as simple as them just calling createIdentifierString()
+        and comparing the strings, because the identifiers can differ (thanks to shell plug-ins).
+    */
+    bool matchesIdentifierString (const String& identifierString) const;
+
+    //==============================================================================
+    /** Returns a string that can be saved and used to uniquely identify the
+        plugin again.
+
+        This contains less info than the XML encoding, and is independent of the
+        plug-in's file location, so can be used to store a plug-in ID for use
+        across different machines.
+    */
+    String createIdentifierString() const;
+
+    //==============================================================================
+    /** Creates an XML object containing these details.
+
+        @see loadFromXml
+    */
+    XmlElement* createXml() const;
+
+    /** Reloads the info in this structure from an XML record that was previously
+        saved with createXML().
+
+        Returns true if the XML was a valid plug-in description.
+    */
+    bool loadFromXml (const XmlElement& xml);
+
+
+private:
+    //==============================================================================
+    JUCE_LEAK_DETECTOR (PluginDescription)
+};
+
+} // namespace juce