If we are note building in the existing source tree and have disabled
dependency-tracking then the testsuite directory is not created during
the configure phase and will not exist when the cp of ROOTFS_PRISTINE
occurs, thus causing an error and fail.
ROOTFS = testsuite/rootfs
ROOTFS_PRISTINE = $(top_srcdir)/testsuite/rootfs-pristine
-CREATE_ROOTFS = $(AM_V_GEN) ( $(RM) -rf $(ROOTFS) && \
+CREATE_ROOTFS = $(AM_V_GEN) ( $(RM) -rf $(ROOTFS) && mkdir -p $(dir $(ROOTFS)) && \
cp -r $(ROOTFS_PRISTINE) $(ROOTFS) && \
touch testsuite/stamp-rootfs && \
find $(ROOTFS) -type d -exec chmod +w {} \; )