Some enhancements for a conditional makefile

.gitignore

@@ -2,6 +2,7 @@
 *.out
 *.bin
 *.o
+*.d
 arch_i.h
 *.dis
 instrs.lst
@@ -9,4 +10,3 @@ instrs.lst
 stdout.txt
 stderr.txt
 stdin.txt
-

Makefile

@@ -5,7 +5,7 @@ all: kas
 
 kpc:
 	@rm -f vm/a.out
-	@cd vm && make --no-print-directory
+	@cd vm && make --no-print-directory verbose=no
 
 kas: kpc as/k-as.py as/regs.lst
 	@cp vm/in/instrs.lst as

vm/Makefile

@@ -1,36 +1,59 @@
 # The OS/K Team licenses this file to you under the MIT license.
 # See the LICENSE file in the project root for more information.
 
-all: k.exe
-
 .PHONY: clean
-.INTERMEDIATE: %.o
+
+verbose ?= yes
+OBJDIR = ob
+FLAGS=-O2 -g -Wall -fno-builtin-log -I.
 
 dv_src = $(shell ls dv/*.c)
 in_src = $(shell ls in/*.c)
 pc_src = $(shell ls pc/*.c)
 
 #obj = pc/disd.o
-obj = $(patsubst %.c,%.o,$(dv_src))
-obj += $(patsubst %.c,%.o,$(in_src))
-obj += $(patsubst %.c,%.o,$(pc_src))
+obj = $(patsubst %.c,$(OBJDIR)/%.o,$(dv_src))
+obj += $(patsubst %.c,$(OBJDIR)/%.o,$(in_src))
+obj += $(patsubst %.c,$(OBJDIR)/%.o,$(pc_src))
 
-FLAGS=-O2 -g -Wall -fno-builtin-log -I.
+dep = $(patsubst %.c,$(OBJDIR)/%.d,$(dv_src))
+dep += $(patsubst %.c,$(OBJDIR)/%.d,$(in_src))
+dep += $(patsubst %.c,$(OBJDIR)/%.d,$(pc_src))
+
+# Color codes
+CL='\033[0;32m'
+CL2='\033[1;36m'
+CL3='\033[0m'
+NC='\033[1;37m'
+
+all: k.exe
 
 #pc/disd.o: in/i_arch.h */*.h pc/decd.c
 #	@cc $(FLAGS) -D_NEED_DISASM -c pc/decd.c -o $@
 
-%.o: %.c in/i_arch.h */*.h $(src)
+-include $(dep)
+
+$(OBJDIR)/%.o: %.c
+	@mkdir -p $(shell dirname $@)
 	@cc $(FLAGS) -c $< -o $@
+	@if [ $(verbose) = "yes" ]; then \
+		echo ${CL2}[$@] ${CL}dependencies generated.${CL3};\
+	fi
+
+$(OBJDIR)/%.d: %.c
+	@mkdir -p $(shell dirname $@)
+	@cc -I. -MM -MT $(@:%.d=%.o) -MF $@ $<
+	@if [ $(verbose) = "yes" ]; then \
+		echo ${CL2}[$@] ${CL}dependencies generated.${CL3};\
+	fi
 
 in/i_arch.h: in/INSTRS in/arch_i.py
 	@cd in && python3 arch_i.py
 
 clean:
-	@rm -f */*.o in/arch_i.h
+	@rm -f $(OBJDIR)/*/*.o in/arch_i.h
+	@rm -f $(OBJDIR)/*/*.d
 
 k.exe: in/i_arch.h $(obj)
 	@gcc -O2 -Wall $(obj) -o k.exe
-	@rm in/arch_i.h
-	@rm -f */*.o
-
+	@echo ${CL2}[$@] ${CL}made successfully.${CL3}