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_core/logging/juce_FileLogger.cpp

@@ -0,0 +1,133 @@
+/*
+  ==============================================================================
+
+   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.
+
+   The code included in this file is provided under the terms of the ISC license
+   http://www.isc.org/downloads/software-support-policy/isc-license. Permission
+   To use, copy, modify, and/or distribute this software for any purpose with or
+   without fee is hereby granted provided that the above copyright notice and
+   this permission notice appear in all copies.
+
+   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
+{
+
+FileLogger::FileLogger (const File& file,
+                        const String& welcomeMessage,
+                        const int64 maxInitialFileSizeBytes)
+    : logFile (file)
+{
+    if (maxInitialFileSizeBytes >= 0)
+        trimFileSize (logFile, maxInitialFileSizeBytes);
+
+    if (! file.exists())
+        file.create();  // (to create the parent directories)
+
+    String welcome;
+    welcome << newLine
+            << "**********************************************************" << newLine
+            << welcomeMessage << newLine
+            << "Log started: " << Time::getCurrentTime().toString (true, true) << newLine;
+
+    FileLogger::logMessage (welcome);
+}
+
+FileLogger::~FileLogger() {}
+
+//==============================================================================
+void FileLogger::logMessage (const String& message)
+{
+    const ScopedLock sl (logLock);
+    DBG (message);
+    FileOutputStream out (logFile, 256);
+    out << message << newLine;
+}
+
+void FileLogger::trimFileSize (const File& file, int64 maxFileSizeBytes)
+{
+    if (maxFileSizeBytes <= 0)
+    {
+        file.deleteFile();
+    }
+    else
+    {
+        const int64 fileSize = file.getSize();
+
+        if (fileSize > maxFileSizeBytes)
+        {
+            TemporaryFile tempFile (file);
+
+            {
+                FileOutputStream out (tempFile.getFile());
+                FileInputStream in (file);
+
+                if (! (out.openedOk() && in.openedOk()))
+                    return;
+
+                in.setPosition (fileSize - maxFileSizeBytes);
+
+                for (;;)
+                {
+                    const char c = in.readByte();
+                    if (c == 0)
+                        return;
+
+                    if (c == '\n' || c == '\r')
+                    {
+                        out << c;
+                        break;
+                    }
+                }
+
+                out.writeFromInputStream (in, -1);
+            }
+
+            tempFile.overwriteTargetFileWithTemporary();
+        }
+    }
+}
+
+//==============================================================================
+File FileLogger::getSystemLogFileFolder()
+{
+   #if JUCE_MAC
+    return File ("~/Library/Logs");
+   #else
+    return File::getSpecialLocation (File::userApplicationDataDirectory);
+   #endif
+}
+
+FileLogger* FileLogger::createDefaultAppLogger (const String& logFileSubDirectoryName,
+                                                const String& logFileName,
+                                                const String& welcomeMessage,
+                                                const int64 maxInitialFileSizeBytes)
+{
+    return new FileLogger (getSystemLogFileFolder().getChildFile (logFileSubDirectoryName)
+                                                   .getChildFile (logFileName),
+                           welcomeMessage, maxInitialFileSizeBytes);
+}
+
+FileLogger* FileLogger::createDateStampedLogger (const String& logFileSubDirectoryName,
+                                                 const String& logFileNameRoot,
+                                                 const String& logFileNameSuffix,
+                                                 const String& welcomeMessage)
+{
+    return new FileLogger (getSystemLogFileFolder().getChildFile (logFileSubDirectoryName)
+                                                   .getChildFile (logFileNameRoot + Time::getCurrentTime().formatted ("%Y-%m-%d_%H-%M-%S"))
+                                                   .withFileExtension (logFileNameSuffix)
+                                                   .getNonexistentSibling(),
+                           welcomeMessage, 0);
+}
+
+} // namespace juce