curdir:=toolchain
# subdirectories to descend into
-$(curdir)/builddirs := $(if $(CONFIG_GDB),gdb) $(if $(CONFIG_INSIGHT),insight) $(if $(CONFIG_EXTERNAL_TOOLCHAIN),wrapper,kernel-headers binutils gcc/initial gcc/final $(LIBC) fortify-headers) $(if $(CONFIG_YASM),yasm)
+$(curdir)/builddirs := $(if $(CONFIG_GDB),gdb) $(if $(CONFIG_EXTERNAL_TOOLCHAIN),wrapper,kernel-headers binutils gcc/initial gcc/final $(LIBC) fortify-headers) $(if $(CONFIG_YASM),yasm)
ifdef CONFIG_USE_UCLIBC
$(curdir)/builddirs += $(LIBC)/utils
endif
endif
endif
+ifdef CONFIG_BUILDBOT
+ $(TOOLCHAIN_DIR)/stamp/.ver_check: $(TMP_DIR)/.build
+ cd "$(TOPDIR)"; git log --format=%h -1 toolchain > $(TMP_DIR)/.ver_check
+ cmp -s $(TMP_DIR)/.ver_check $@ || { \
+ rm -rf $(BUILD_DIR) $(STAGING_DIR) $(TOOLCHAIN_DIR) $(BUILD_DIR_TOOLCHAIN); \
+ mkdir -p $(TOOLCHAIN_DIR)/stamp; \
+ mv $(TMP_DIR)/.ver_check $@; \
+ }
+
+$(TOOLCHAIN_DIR)/info.mk $(STAGING_DIR)/.prepared: $(TOOLCHAIN_DIR)/stamp/.ver_check
+endif
+
# prerequisites for the individual targets
$(curdir)/ := .config prereq
$(curdir)//compile = $(STAGING_DIR)/.prepared $(TOOLCHAIN_DIR)/info.mk $(tools/stamp-compile)