kbuild: add dtc as dependency on .dtb files

[Linux commit b8fc5b2157b1]

If dtc is rebuilt, we should rebuild .dtb files with the new dtc.

[Import notes: Back then there was no .dtbo rule in Linux's
Makefile.lib, but the current .dtbo rules in Linux also have the
$(DTC) dependency, so also add it to our .dtbo rule.]

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 7b27224b5d440189bd00d5ae18ed0d4acaeae456..651d700369ef27c2d242f3a0115886645b983d63 100644 (file)
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -331,7 +331,7 @@ cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
                ; \
        sed "s:$(pre-tmp):$(<):" $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
 
-$(obj)/%.dtb: $(src)/%.dts FORCE
+$(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE
        $(call if_changed_dep,dtc)
 
 pre-tmp = $(subst $(comma),_,$(dot-target).pre.tmp)
@@ -351,7 +351,7 @@ cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
                -d $(depfile).dtc.tmp $(dtc-tmp) ; \
        cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
 
-$(obj)/%.dtbo: $(src)/%.dts FORCE
+$(obj)/%.dtbo: $(src)/%.dts $(DTC) FORCE
        $(call if_changed_dep,dtco)
 
 # Fonts