[build] Use $(xxx_DEPS) for additional dependency information

Some objects (embedded.o, rootcert.o, and clientcert.o) define
additional dependencies on external files, using syntax such as:

    $(BIN)/clientcert.o : $(CERT_LIST)

This dependency can be missed when using debug builds.  For example,
if DEBUG=clientcert is used, then the relevant object is
$(BIN)/clientcert.dbg1.o rather than $(BIN)/clientcert.o.

Fix by adding dependencies to $(clientcert_DEPS) instead:

    clientcert_DEPS += $(CERT_LIST)

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/Makefile.housekeeping

@@ -517,95 +517,6 @@ RULE_S_to_s	= $(Q)$(PREPROCESS_S) $< > $@
 
 DEBUG_TARGETS	+= dbg%.o c s
 
-# We automatically generate rules for any file mentioned in AUTO_SRCS
-# using the following set of templates.  It would be cleaner to use
-# $(eval ...), but this function exists only in GNU make >= 3.80.
-
-# deps_template : generate dependency list for a given source file
-#
-# $(1) is the full path to the source file (e.g. "drivers/net/rtl8139.c")
-# $(2) is the source type (e.g. "c")
-# $(3) is the source base name (e.g. "rtl8139")
-#
-define deps_template
-	@$(ECHO) "  [DEPS] $(1)"
-	@$(MKDIR) -p $(BIN)/deps/$(dir $(1))
-	@$(CPP) $(CFLAGS) $(CFLAGS_$(2)) $(CFLAGS_$(3)) -DOBJECT=$(3) \
-		-Wno-error -M $(1) -MG -MP | \
-		sed 's/\.o\s*:/_DEPS =/' > $(BIN)/deps/$(1).d
-endef
-
-# rules_template : generate rules for a given source file
-#
-# $(1) is the full path to the source file (e.g. "drivers/net/rtl8139.c")
-# $(2) is the source type (e.g. "c")
-# $(3) is the source base name (e.g. "rtl8139")
-#
-define rules_template
-	@$(ECHO) "  [RULES] $(1)"
-	@$(MKDIR) -p $(BIN)/rules/$(dir $(1))
-	@$(ECHO_E) '\n$$(BIN)/$(3).o :' \
-		 '$(1) $$(MAKEDEPS) $$(POST_O_DEPS) $$($(3)_DEPS)' \
-		 '\n\t$$(QM)$(ECHO) "  [BUILD] $$@"' \
-		 '\n\t$$(RULE_$(2))\n' \
-		 '\nBOBJS += $$(BIN)/$(3).o\n' \
-		 $(foreach TGT,$(DEBUG_TARGETS), \
-		    $(if $(RULE_$(2)_to_$(TGT)), \
-		    '\n$$(BIN)/$(3).$(TGT) :' \
-		    '$(1) $$(MAKEDEPS) $$(POST_O_DEPS) $$($(3)_DEPS)' \
-		    '\n\t$$(QM)$(ECHO) "  [BUILD] $$@"' \
-		    '\n\t$$(RULE_$(2)_to_$(TGT))\n' \
-		    '\n$(TGT)_OBJS += $$(BIN)/$(3).$(TGT)\n' ) ) \
-		 '\n$(BIN)/deps/$(1).d : $$($(3)_DEPS)\n' \
-		 '\nTAGS : $$($(3)_DEPS)\n' > $(BIN)/rules/$(1).r
-	@$(if $(findstring drivers/,$(1)),\
-	   $(PERL) $(PARSEROM) $(1) >> $(BIN)/rules/$(1).r)
-endef
-
-# Rule to generate the dependency list file
-#
-$(BIN)/deps/%.d : % $(MAKEDEPS)
-	$(call deps_template,$<,$(subst .,,$(suffix $<)),$(basename $(notdir $<)))
-
-# Calculate and include the list of dependency list files
-#
-AUTO_DEPS	= $(patsubst %,$(BIN)/deps/%.d,$(AUTO_SRCS))
-ifdef NEED_DEPS
-ifneq ($(AUTO_DEPS),)
--include $(AUTO_DEPS)
-endif
-endif
-autodeps :
-	@$(ECHO) $(AUTO_DEPS)
-VERYCLEANUP	+= $(BIN)/deps
-
-# Rule to generate the rules file
-#
-$(BIN)/rules/%.r : % $(MAKEDEPS) $(PARSEROM)
-	$(call rules_template,$<,$(subst .,,$(suffix $<)),$(basename $(notdir $<)))
-
-# Calculate and include the list of rules files
-#
-AUTO_RULES	= $(patsubst %,$(BIN)/rules/%.r,$(AUTO_SRCS))
-ifdef NEED_DEPS
-ifneq ($(AUTO_RULES),)
--include $(AUTO_RULES)
-endif
-endif
-autorules :
-	@$(ECHO) $(AUTO_RULES)
-VERYCLEANUP	+= $(BIN)/rules
-
-# The following variables are created by the rules files
-#
-bobjs :
-	@$(ECHO) $(BOBJS)
-drivers :
-	@$(ECHO) $(DRIVERS)
-.PHONY : drivers
-roms :
-	@$(ECHO) $(ROMS)
-
 # List of embedded images included in the last build of embedded.o.
 # This is needed in order to correctly rebuild embedded.o whenever the
 # list of objects changes.
@@ -630,7 +541,7 @@ EMBED_ALL	:= $(foreach i,$(call seq,1,$(words $(EMBEDDED_FILES))),\
 		     EMBED ( $(i), \"$(word $(i), $(EMBEDDED_FILES))\",\
 			     \"$(notdir $(word $(i),$(EMBEDDED_FILES)))\" ))
 
-$(BIN)/embedded.o : $(EMBEDDED_FILES) $(EMBEDDED_LIST)
+embedded_DEPS += $(EMBEDDED_FILES) $(EMBEDDED_LIST)
 
 CFLAGS_embedded = -DEMBED_ALL="$(EMBED_ALL)"
 
@@ -658,7 +569,7 @@ TRUSTED_FPS	:= $(foreach CERT,$(TRUSTED_CERTS),\
 			 $(shell $(OPENSSL) x509 -in $(CERT) -noout -sha256 \
 				 -fingerprint))))$(COMMA))
 
-$(BIN)/rootcert.o : $(TRUSTED_FILES) $(TRUSTED_LIST)
+rootcert_DEPS += $(TRUSTED_FILES) $(TRUSTED_LIST)
 
 CFLAGS_rootcert = $(if $(TRUSTED_FPS),-DTRUSTED="$(TRUSTED_FPS)")
 
@@ -686,12 +597,12 @@ ifdef CERT
 $(CERT_INC) : $(CERT) $(CERT_LIST)
 	$(Q)$(OPENSSL) x509 -in $< -outform DER -out $@
 
-$(BIN)/clientcert.o : $(CERT_INC)
+clientcert_DEPS += $(CERT_INC)
 endif
 
 CLEANUP += $(CERT_INC)
 
-$(BIN)/clientcert.o : $(CERT_LIST)
+clientcert_DEPS += $(CERT_LIST)
 
 CFLAGS_clientcert += $(if $(CERT),-DCERTIFICATE="\"$(CERT_INC)\"")
 
@@ -719,12 +630,12 @@ ifdef KEY
 $(KEY_INC) : $(KEY) $(KEY_LIST)
 	$(Q)$(OPENSSL) rsa -in $< -outform DER -out $@
 
-$(BIN)/clientcert.o : $(KEY_INC)
+clientcert_DEPS += $(KEY_INC)
 endif
 
 CLEANUP += $(KEY_INC)
 
-$(BIN)/clientcert.o : $(KEY_LIST)
+clientcert_DEPS += $(KEY_LIST)
 
 CFLAGS_clientcert += $(if $(KEY),-DPRIVATE_KEY="\"$(KEY_INC)\"")
 
@@ -736,6 +647,95 @@ $(BIN)/embedded.o : override CC := env CCACHE_DISABLE=1 $(CC)
 
 $(BIN)/clientcert.o : override CC := env CCACHE_DISABLE=1 $(CC)
 
+# We automatically generate rules for any file mentioned in AUTO_SRCS
+# using the following set of templates.  It would be cleaner to use
+# $(eval ...), but this function exists only in GNU make >= 3.80.
+
+# deps_template : generate dependency list for a given source file
+#
+# $(1) is the full path to the source file (e.g. "drivers/net/rtl8139.c")
+# $(2) is the source type (e.g. "c")
+# $(3) is the source base name (e.g. "rtl8139")
+#
+define deps_template
+	@$(ECHO) "  [DEPS] $(1)"
+	@$(MKDIR) -p $(BIN)/deps/$(dir $(1))
+	@$(CPP) $(CFLAGS) $(CFLAGS_$(2)) $(CFLAGS_$(3)) -DOBJECT=$(3) \
+		-Wno-error -M $(1) -MG -MP | \
+		sed 's/\.o\s*:/_DEPS +=/' > $(BIN)/deps/$(1).d
+endef
+
+# rules_template : generate rules for a given source file
+#
+# $(1) is the full path to the source file (e.g. "drivers/net/rtl8139.c")
+# $(2) is the source type (e.g. "c")
+# $(3) is the source base name (e.g. "rtl8139")
+#
+define rules_template
+	@$(ECHO) "  [RULES] $(1)"
+	@$(MKDIR) -p $(BIN)/rules/$(dir $(1))
+	@$(ECHO_E) '\n$$(BIN)/$(3).o :' \
+		 '$(1) $$(MAKEDEPS) $$(POST_O_DEPS) $$($(3)_DEPS)' \
+		 '\n\t$$(QM)$(ECHO) "  [BUILD] $$@"' \
+		 '\n\t$$(RULE_$(2))\n' \
+		 '\nBOBJS += $$(BIN)/$(3).o\n' \
+		 $(foreach TGT,$(DEBUG_TARGETS), \
+		    $(if $(RULE_$(2)_to_$(TGT)), \
+		    '\n$$(BIN)/$(3).$(TGT) :' \
+		    '$(1) $$(MAKEDEPS) $$(POST_O_DEPS) $$($(3)_DEPS)' \
+		    '\n\t$$(QM)$(ECHO) "  [BUILD] $$@"' \
+		    '\n\t$$(RULE_$(2)_to_$(TGT))\n' \
+		    '\n$(TGT)_OBJS += $$(BIN)/$(3).$(TGT)\n' ) ) \
+		 '\n$(BIN)/deps/$(1).d : $$($(3)_DEPS)\n' \
+		 '\nTAGS : $$($(3)_DEPS)\n' > $(BIN)/rules/$(1).r
+	@$(if $(findstring drivers/,$(1)),\
+	   $(PERL) $(PARSEROM) $(1) >> $(BIN)/rules/$(1).r)
+endef
+
+# Rule to generate the dependency list file
+#
+$(BIN)/deps/%.d : % $(MAKEDEPS)
+	$(call deps_template,$<,$(subst .,,$(suffix $<)),$(basename $(notdir $<)))
+
+# Calculate and include the list of dependency list files
+#
+AUTO_DEPS	= $(patsubst %,$(BIN)/deps/%.d,$(AUTO_SRCS))
+ifdef NEED_DEPS
+ifneq ($(AUTO_DEPS),)
+-include $(AUTO_DEPS)
+endif
+endif
+autodeps :
+	@$(ECHO) $(AUTO_DEPS)
+VERYCLEANUP	+= $(BIN)/deps
+
+# Rule to generate the rules file
+#
+$(BIN)/rules/%.r : % $(MAKEDEPS) $(PARSEROM)
+	$(call rules_template,$<,$(subst .,,$(suffix $<)),$(basename $(notdir $<)))
+
+# Calculate and include the list of rules files
+#
+AUTO_RULES	= $(patsubst %,$(BIN)/rules/%.r,$(AUTO_SRCS))
+ifdef NEED_DEPS
+ifneq ($(AUTO_RULES),)
+-include $(AUTO_RULES)
+endif
+endif
+autorules :
+	@$(ECHO) $(AUTO_RULES)
+VERYCLEANUP	+= $(BIN)/rules
+
+# The following variables are created by the rules files
+#
+bobjs :
+	@$(ECHO) $(BOBJS)
+drivers :
+	@$(ECHO) $(DRIVERS)
+.PHONY : drivers
+roms :
+	@$(ECHO) $(ROMS)
+
 # Generate error usage information
 #
 $(BIN)/%.einfo : $(BIN)/%.o