dts_dir:
$(shell [ -d $(obj)/dts ] || mkdir -p $(obj)/dts)
-include/generated/dt-structs.h: $(obj)/$(SPL_BIN).dtb dts_dir dtoc
+include/generated/dt-structs.h: $(obj)/$(SPL_BIN).dtb dts_dir checkdtoc
$(call if_changed,dtoch)
-$(obj)/dts/dt-platdata.c: $(obj)/$(SPL_BIN).dtb dts_dir dtoc
+$(obj)/dts/dt-platdata.c: $(obj)/$(SPL_BIN).dtb dts_dir checkdtoc
$(call if_changed,dtocc)
-dtoc: #$(objtree)/tools/_libfdt.so
-
ifdef CONFIG_SAMSUNG
ifdef CONFIG_VAR_SIZE_SPL
VAR_SIZE_PARAM = --vs
include $(cmd_files)
endif
+checkdtoc: tools
+ @if ! ( echo 'import libfdt' | ( PYTHONPATH=tools python )); then \
+ echo '*** dtoc needs the Python libfdt library. Either '; \
+ echo '*** install it on your system, or try:'; \
+ echo '***'; \
+ echo '*** sudo apt-get install swig libpython-dev'; \
+ echo '***'; \
+ echo '*** to have U-Boot build its own version.'; \
+ false; \
+ fi
+
PHONY += FORCE
FORCE: