curdir:=tools
# subdirectories to descend into
-$(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 $(CONFIG_GCC_VERSION_4_3),gmp mpfr) yaffs2
+tools-y := sed sstrip ipkg-utils genext2fs squashfs mtd-utils lzma mkimage firmware-utils patch-cmdline pkg-config m4 autoconf automake bison quilt yaffs2
+
+tools-$(CONFIG_CCACHE) += ccache
+tools-$(CONFIG_powerpc) += dtc
+tools-$(CONFIG_GCC_VERSION_4_3)$(CONFIG_GCC_VERSION_4_4) += gmp mpfr
# builddir dependencies
$(curdir)/squashfs/compile := $(curdir)/lzma/install
$(curdir)/quilt/compile := $(curdir)/sed/install
$(curdir)/dtc/compile := $(curdir)/bison/install
+$(curdir)/autoconf/compile := $(curdir)/m4/install
+$(curdir)/automake/compile := $(curdir)/m4/install
+
+$(curdir)/builddirs := $(tools-y) $(tools-dep) $(tools-)
+$(curdir)/builddirs-default := $(tools-y)
# preparatory work
$(STAGING_DIR)/.prepared: $(TMP_DIR)/.build
$(curdir)/ := .config prereq
$(curdir)//install = $(1)/compile
-$(eval $(call stampfile,$(curdir),tools,install))
+$(eval $(call stampfile,$(curdir),tools,install,,CONFIG_CCACHE CONFIG_powerpc CONFIG_GCC_VERSION_4_3))
$(eval $(call subdir,$(curdir)))