+$(curdir)/sdcc/compile := $(curdir)/bison/install
+$(curdir)/b43-tools/compile := $(curdir)/bison/install
+$(curdir)/padjffs2/compile := $(curdir)/findutils/install
+$(curdir)/cloog/compile := $(curdir)/ppl/install
+$(curdir)/bc/compile := $(curdir)/bison/install
+$(curdir)/findutils/compile := $(curdir)/bison/install
+
+ifneq ($(CONFIG_CCACHE),)
+$(foreach tool, $(tools-y), $(eval $(curdir)/$(tool)/compile += $(curdir)/ccache/install))
+tools-y += ccache
+endif
+
+# in case there is no patch tool on the host we need to make patch tool a
+# dependency for tools which have patches directory
+$(foreach tool, $(tools-y), $(if $(wildcard $(curdir)/$(tool)/patches),$(eval $(curdir)/$(tool)/compile += $(curdir)/patch/install)))