1 files changed, 3 insertions, 2 deletions

diff --git a/Makefile.custom b/Makefile.custom
index e4a616f65..3334b31eb 100644
--- a/Makefile.custom
+++ b/Makefile.custom
@@ -47,10 +47,11 @@ ifneq ($(strip $(DO_INSTALL_LIBS)),n)
 endif
 
 # Not very elegant: copies testsuite to objdir...
+# (cp -pPR is POSIX-compliant (cp -dpR or cp -a would not be))
 .PHONY: check
 .PHONY: test
 check test: busybox busybox.links
-        test -d $(objtree)/testsuite || cp -a $(srctree)/testsuite $(objtree)
+        test -d $(objtree)/testsuite || cp -pPR $(srctree)/testsuite $(objtree)
         bindir=$(objtree) srcdir=$(srctree)/testsuite \
         $(SHELL) -c "cd $(objtree)/testsuite && $(srctree)/testsuite/runtest $(if $(KBUILD_VERBOSE:0=),-v)"
 
@@ -58,7 +59,7 @@ check test: busybox busybox.links
 release: distclean
         cd ..; \
         rm -r -f busybox-$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION); \
-        cp -a busybox busybox-$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) && { \
+        cp -pPR busybox busybox-$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) && { \
         find busybox-$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)/ -type d \
                 -name .svn \
                 -print \