Fix deamon mode on macos

src/apple/AppleMain.cxx

@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+// Copyright The Music Player Daemon Project
+
+#include "Main.hxx"
+#include "Instance.hxx"
+#include "CommandLine.hxx"
+#include "net/Init.hxx"
+#include "config/Data.hxx"
+
+static int service_argc;
+static char **service_argv;
+
+int apple_main(int argc, char *argv[])
+{
+	service_argc = argc;
+	service_argv = argv;
+
+#ifdef ENABLE_DAEMON
+	CommandLineOptions options;
+	ConfigData raw_config;
+
+	ParseCommandLine(argc, argv, options, raw_config);
+
+	if (options.daemon) {
+		// Fork before any Objective-C runtime initializations
+		pid_t pid = fork();
+		if (pid < 0)
+			throw MakeErrno("fork() failed");
+
+		if (pid > 0) {
+			// Parent process: exit immediately
+			_exit(0);
+		}
+	}
+#endif
+
+	return mpd_main(argc, argv);
+}