--- curl-8.19.0/lib/urldata.h.orig	2026-03-11 07:47:06.000000000 +0100
+++ curl-8.19.0/lib/urldata.h	2026-03-11 21:48:32.375053949 +0100
@@ -182,7 +182,9 @@
 #    include <gssapi.h>
 #  else /* MIT Kerberos */
 #    include <gssapi/gssapi.h>
-#    include <gssapi/gssapi_krb5.h> /* for GSS_C_CHANNEL_BOUND_FLAG in 1.19+ */
+#    ifdef GSS_C_CHANNEL_BOUND_FLAG
+#      include <gssapi/gssapi_krb5.h> /* for GSS_C_CHANNEL_BOUND_FLAG, in 1.19+ */
+#    endif
 #  endif
 #endif