make: Header generation targets-tools.mk -> include.mk

Move project header generation mechanics from targets-tools.mk into
include.mk.

make/include.mk

@@ -1,10 +1,28 @@
 include $(MODDIR)/make/defs.mk
 include $(MODDIR)/make/rules.mk
 
-all:
+# variables
+#PROJ_H       ?= $(PROJECT).h
+SRC_H        += $(PROJ_H)
+
+# mandatory targets
+all: $(PROJ_H)
 clean: clean.include
 install: install_HDR
 
-clean.include:
+# convenience targets
-	rm -rf *.h *~ .*.swp *.done
+project-header: $(PROJ_H)
+
+# rules
+clean.include:
+	rm -rf *.h *~ .*.swp *.done $(PROJ_H)
+
+$(PROJ_H): $(filter-out $(PROJ_H) $(PROJECT)/$(PROJ_H),$(wildcard *.h $(PROJECT)/*.h))
+	echo "#ifndef _$(PROJECT_CAPNAME)_H" > $@.tmp
+	echo "#define _$(PROJECT_CAPNAME)_H" >> $@.tmp
+	echo >> $@.tmp
+	for h in $(sort $(patsubst $(PROJECT)/%,%,$^)); do echo "#include <$(PROJECT)/$$h>"; done >> $@.tmp
+	echo >> $@.tmp
+	echo "#endif /* #ifndef _$(PROJECT_CAPNAME)_H */" >> $@.tmp
+	mv $@.tmp $@
 

make/targets-tools.mk

@@ -11,18 +11,3 @@ install: $(ALL)
 $(LIB_SO): $(OBJ)
 all.done: $(PREREQ_DONE) $(BUILD_HDR) $(BUILD_EXE_SH) $(MEMBERS) $(LIB_A) $(LIB_SO)
 
-project-header: $(PROJ_H)
-
-# I think this is most cleanly handled in include.mk
-#PROJ_H       ?= $(PROJECT).h
-SRC_H        += $(PROJ_H)
-
-$(PROJ_H): $(filter-out $(PROJ_H) $(PROJECT)/$(PROJ_H),$(wildcard *.h $(PROJECT)/*.h))
-	echo "#ifndef _$(PROJECT_CAPNAME)_H" > $@.tmp
-	echo "#define _$(PROJECT_CAPNAME)_H" >> $@.tmp
-	echo >> $@.tmp
-	for h in $(sort $(patsubst $(PROJECT)/%,%,$^)); do echo "#include <$(PROJECT)/$$h>"; done >> $@.tmp
-	echo >> $@.tmp
-	echo "#endif /* #ifndef _$(PROJECT_CAPNAME)_H */" >> $@.tmp
-	mv $@.tmp $@
-