v01d commented on a change in pull request #2335:
URL: https://github.com/apache/incubator-nuttx/pull/2335#discussion_r526305597
##########
File path: boards/Makefile
##########
@@ -98,13 +98,28 @@ $(CXXOBJS): %$(OBJEXT): %.cxx
$(BIN): $(OBJS)
$(call ARCHIVE, $@, $(OBJS))
+
+%.dd: %.c
+ $(Q) $(MKDEP) $(DEPPATH) "$(CC)" -- $(CFLAGS) -- $< > $@
+
+%.ddxx: %.cxx
+ $(Q) $(MKDEP) $(DEPPATH) "$(CC)" -- $(CXXFLAGS) -- $< > $@
+
+makedepfile: $(patsubst %.c,%.dd,$(SRCS))
+ @for f in $^; do cat $$f; done >> Make.dep
+ $(call DELFILE, $^)
+
+makedepxxfile: $(patsubst %.cxx,%.ddxx,$(CXXSRCS))
+ @for f in $^; do cat $$f; done >> Make.dep
+ $(call DELFILE, $^)
.depend: Makefile $(SRCS) $(TOPDIR)$(DELIM).config
+ $(call DELFILE, Make.dep)
Review comment:
But we need to define the new targets as well and as you can see they
are slightly different in different cases (according to flags, bin path) and at
least the way I found to handle that is to use different dep file extensions
for each case (so one target for each).
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