-$(curdir)/builddirs := sed sstrip ipkg-utils genext2fs squashfs mtd-utils lzma mkimage firmware-utils patch-cmdline pkg-config autoconf automake $(if $(CONFIG_CCACHE),ccache) bison $(if $(CONFIG_powerpc),dtc) quilt $(if $(CONFIG_GCC_VERSION_4_3),gmp mpfr) yaffs2
+tools-y :=
+tools-$(CONFIG_GCC_VERSION_4_3)$(CONFIG_GCC_VERSION_4_4) += gmp mpfr
+tools-y += m4 autoconf automake bison pkg-config sed
+tools-y += sstrip ipkg-utils genext2fs squashfs mtd-utils lzma mkimage
+tools-y += firmware-utils patch-cmdline quilt yaffs2
+
+tools-$(CONFIG_CCACHE) += ccache
+tools-$(CONFIG_powerpc) += dtc