Index: Mk/bsd.port.mk
===================================================================
--- Mk/bsd.port.mk
+++ Mk/bsd.port.mk
@@ -2046,14 +2046,17 @@
 SCRIPTS_ENV+=	${INSTALL_MACROS}
 
 # Macro for copying entire directory tree with correct permissions
+# In the -exec shell commands, we add add a . as the first argument, it would
+# end up being $0 aka the script name, which is not part of $@, so we force it
+# to be able to use $@ directly.
 COPYTREE_BIN=	${SH} -c '(${FIND} -d $$0 $$2 | ${CPIO} -dumpl $$1 >/dev/null \
 					2>&1) && \
-					${FIND} -d $$0 $$2 -type d -exec chmod 755 $$1/{} \; && \
-					${FIND} -d $$0 $$2 -type f -exec chmod ${BINMODE} $$1/{} \;' --
+					${FIND} -d $$0 $$2 -type d -exec ${SH} -c '\''cd '\''$$1'\'' && chmod 755 "$$@"'\'' -- . {} + && \
+					${FIND} -d $$0 $$2 -type f -exec ${SH} -c '\''cd '\''$$1'\'' && chmod ${BINMODE} "$$@"'\'' -- . {} +' --
 COPYTREE_SHARE=	${SH} -c '(${FIND} -d $$0 $$2 | ${CPIO} -dumpl $$1 >/dev/null \
 					2>&1) && \
-					${FIND} -d $$0 $$2 -type d -exec chmod 755 $$1/{} \; && \
-					${FIND} -d $$0 $$2 -type f -exec chmod ${SHAREMODE} $$1/{} \;' --
+					${FIND} -d $$0 $$2 -type d -exec ${SH} -c '\''cd '\''$$1'\'' && chmod 755 "$$@"'\'' -- . {} + && \
+					${FIND} -d $$0 $$2 -type f -exec ${SH} -c '\''cd '\''$$1'\'' && chmod ${SHAREMODE} "$$@"'\'' -- . {} +' --
 
 # The user can override the NO_PACKAGE by specifying this from
 # the make command line