diff -ur WWW-Curl-4.17.orig/Curl.xs WWW-Curl-4.17/Curl.xs
--- WWW-Curl-4.17.orig/Curl.xs	2014-02-21 08:08:30.000000000 -0800
+++ WWW-Curl-4.17/Curl.xs	2023-05-09 13:47:16.532736770 -0700
@@ -18,6 +18,10 @@
 #include <curl/easy.h>
 #include <curl/multi.h>
 
+#ifdef CURLINC_MULTI_H
+#define __CURL_MULTI_H
+#endif
+
 #define header_callback_func writeheader_callback_func
 
 /* Do a favor for older perl versions */
diff -ur WWW-Curl-4.17.orig/Makefile.PL WWW-Curl-4.17/Makefile.PL
--- WWW-Curl-4.17.orig/Makefile.PL	2014-02-21 08:08:09.000000000 -0800
+++ WWW-Curl-4.17/Makefile.PL	2023-05-09 13:48:59.409533111 -0700
@@ -127,7 +127,7 @@
     close H;
 
     for my $e (sort @syms) {
-       if($e =~ /(OBSOLETE|^CURL_EXTERN|_LAST\z|_LASTENTRY\z)/) {
+       if($e =~ /(OBSOLETE|^CURL_EXTERN|_LAST\z|_LASTENTRY\z|^CURLINC_)/) {
           next;
        }
        my ($group) = $e =~ m/^([^_]+_)/;