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diff --git a/Utilities/cmcurl/lib/macos.c b/Utilities/cmcurl/lib/macos.c
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+++ b/Utilities/cmcurl/lib/macos.c
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+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+#include "curl_setup.h"
+
+#ifdef CURL_MACOS_CALL_COPYPROXIES
+
+#include <curl/curl.h>
+
+#include "macos.h"
+
+#include <SystemConfiguration/SCDynamicStoreCopySpecific.h>
+
+CURLcode Curl_macos_init(void)
+{
+  {
+    /*
+     * The automagic conversion from IPv4 literals to IPv6 literals only
+     * works if the SCDynamicStoreCopyProxies system function gets called
+     * first. As Curl currently doesn't support system-wide HTTP proxies, we
+     * therefore don't use any value this function might return.
+     *
+     * This function is only available on macOS and is not needed for
+     * IPv4-only builds, hence the conditions for defining
+     * CURL_MACOS_CALL_COPYPROXIES in curl_setup.h.
+     */
+    CFDictionaryRef dict = SCDynamicStoreCopyProxies(NULL);
+    if(dict)
+      CFRelease(dict);
+  }
+  return CURLE_OK;
+}
+
+#endif