--- rdesktop-1.9.0/configure.ac.orig	2021-05-22 14:38:14.854099405 +0300
+++ rdesktop-1.9.0/configure.ac	2021-05-22 14:43:41.476323564 +0300
@@ -84,6 +84,9 @@
 				fi
 				;;
 			*)
+				if test -n "$PKG_CONFIG"; then
+					PKG_CHECK_MODULES(GSSAPI, krb5-gssapi, [WITH_CREDSSP=1], [WITH_CREDSSP=0])
+				fi
 				;;
 			esac
 		else