--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/curl/lib/getenv.c	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,54 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2019, 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.haxx.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.
+ *
+ ***************************************************************************/
+
+#include "curl_setup.h"
+
+#include <curl/curl.h>
+#include "curl_memory.h"
+
+#include "memdebug.h"
+
+static
+char *GetEnv(const char *variable)
+{
+#if defined(_WIN32_WCE) || defined(CURL_WINDOWS_APP)
+  (void)variable;
+  return NULL;
+#else
+#ifdef WIN32
+  char env[4096];
+  char *temp = getenv(variable);
+  env[0] = '\0';
+  if(temp != NULL)
+    ExpandEnvironmentStringsA(temp, env, sizeof(env));
+  return (env[0] != '\0')?strdup(env):NULL;
+#else
+  char *env = getenv(variable);
+  return (env && env[0])?strdup(env):NULL;
+#endif
+#endif
+}
+
+char *curl_getenv(const char *v)
+{
+  return GetEnv(v);
+}