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_plugin_client/utility/juce_CheckSettingMacros.h

@@ -0,0 +1,120 @@
+/*
+  ==============================================================================
+
+   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.
+
+  ==============================================================================
+*/
+
+// The following checks should cause a compile error if you've forgotten to
+// define all your plugin settings properly..
+
+#if ! (JucePlugin_Build_VST || JucePlugin_Build_VST3 \
+        || JucePlugin_Build_AU || JucePlugin_Build_AUv3 \
+        ||JucePlugin_Build_RTAS || JucePlugin_Build_AAX \
+        || JucePlugin_Build_Standalone || JucePlugin_Build_LV2)
+ #error "You need to enable at least one plugin format!"
+#endif
+
+#ifdef JUCE_CHECKSETTINGMACROS_H
+ #error "This header should never be included twice! Otherwise something is wrong."
+#endif
+#define JUCE_CHECKSETTINGMACROS_H
+
+#ifndef JucePlugin_IsSynth
+ #error "You need to define the JucePlugin_IsSynth value!"
+#endif
+
+#ifndef JucePlugin_ManufacturerCode
+ #error "You need to define the JucePlugin_ManufacturerCode value!"
+#endif
+
+#ifndef JucePlugin_PluginCode
+ #error "You need to define the JucePlugin_PluginCode value!"
+#endif
+
+#ifndef JucePlugin_ProducesMidiOutput
+ #error "You need to define the JucePlugin_ProducesMidiOutput value!"
+#endif
+
+#ifndef JucePlugin_WantsMidiInput
+ #error "You need to define the JucePlugin_WantsMidiInput value!"
+#endif
+
+#ifdef JucePlugin_Latency
+ #error "JucePlugin_Latency is now deprecated - instead, call the AudioProcessor::setLatencySamples() method if your plugin has a non-zero delay"
+#endif
+
+#ifndef JucePlugin_EditorRequiresKeyboardFocus
+ #error "You need to define the JucePlugin_EditorRequiresKeyboardFocus value!"
+#endif
+
+//==============================================================================
+#if _WIN64 || (__LP64__ && (defined (__APPLE_CPP__) || defined (__APPLE_CC__)))
+ #undef JucePlugin_Build_RTAS
+ #define JucePlugin_Build_RTAS 0
+#endif
+
+#if ! (defined (_MSC_VER) || defined (__APPLE_CPP__) || defined (__APPLE_CC__))
+ #undef JucePlugin_Build_VST3
+ #define JucePlugin_Build_VST3 0
+#endif
+
+//==============================================================================
+#if JucePlugin_Build_LV2 && ! defined (JucePlugin_LV2URI)
+ #error "You need to define the JucePlugin_LV2URI value!"
+#endif
+
+#if JucePlugin_Build_AAX && ! defined (JucePlugin_AAXIdentifier)
+ #error "You need to define the JucePlugin_AAXIdentifier value!"
+#endif
+
+#if defined (__ppc__)
+ #undef JucePlugin_Build_AAX
+ #define JucePlugin_Build_AAX 0
+#endif
+
+//==============================================================================
+#if JucePlugin_Build_VST
+
+ #if JucePlugin_VersionCode < 0x010000   // Major < 0
+
+  #if (JucePlugin_VersionCode & 0x00FF00) > (9 * 0x100) // check if Minor number exceeeds 9
+   #warning When version has "major" = 0, VST2 has trouble displaying "minor" exceeding 9
+  #endif
+
+  #if (JucePlugin_VersionCode & 0xFF) > 9   // check if Bugfix number exceeeds 9
+   #warning When version has "major" = 0, VST2 has trouble displaying "bugfix" exceeding 9
+  #endif
+
+ #elif JucePlugin_VersionCode >= 0x650000   // Major >= 101
+
+  #if (JucePlugin_VersionCode & 0x00FF00) > (99 * 0x100) // check if Minor number exceeeds 99
+   #warning When version has "major" > 100, VST2 has trouble displaying "minor" exceeding 99
+  #endif
+
+  #if (JucePlugin_VersionCode & 0xFF) > 99  // check if Bugfix number exceeeds 99
+   #warning When version has "major" > 100, VST2 has trouble displaying "bugfix" exceeding 99
+  #endif
+
+ #endif // JucePlugin_VersionCode
+
+#endif // JucePlugin_Build_VST