Index: head/Mk/bsd.port.mk
===================================================================
--- head/Mk/bsd.port.mk
+++ head/Mk/bsd.port.mk
@@ -5134,7 +5134,12 @@
 .if !target(create-binary-alias)
 create-binary-alias: ${BINARY_LINKDIR}
 .for target src in ${BINARY_ALIAS:C/=/ /}
-	@${RLN} `which ${src}` ${BINARY_LINKDIR}/${target}
+	@if srcpath=`which -- ${src}`; then \
+		${RLN} $${srcpath} ${BINARY_LINKDIR}/${target}; \
+	else \
+		${ECHO_MSG} "===>  Missing \"${src}\" to create a binary alias at \"${BINARY_LINKDIR}/${target}\""; \
+		${FALSE}; \
+	fi
 .endfor
 .endif
 .endif