Makefile.dos: implement silent mode

Makefile.dos

@@ -195,6 +195,10 @@ else
   LIB_CORE += -lretro_dos
 endif
 
+ifneq ($(V),1)
+        Q := @
+endif
+
 DEPENDS_TMP  := $(OFILES:.o=.d)
 DEPENDS      := $(filter-out libretro_libnx.a,$(DEPENDS_TMP))
 
@@ -203,19 +207,43 @@ DEPENDS      := $(filter-out libretro_libnx.a,$(DEPENDS_TMP))
 #---------------------------------------------------------------------------------
 # main targets
 #---------------------------------------------------------------------------------
-all	:	$(OUTPUT)
+all: info $(OUTPUT)
+
+define INFO
+CC: $(CC)
+CFLAGS: $(CFLAGS)
+CXX: $(CXX)
+DEPENDS: $(DEPENDS)
+LDFLAGS: $(LDFLAGS)
+LIBDIRS: $(LIBDIRS)
+LIBS: $(LIBS)
+LIB_CORE: $(LIB_CORE)
+OBJ: $(OBJ)
+OUTPUT: $(OUTPUT)
+PLATEXTRA: $(PLATEXTRA)
+endef
+export INFO
+
+info:
+ifneq ($(V),1)
+	@echo "$$INFO"
+endif
 
 $(OUTPUT): $(OBJ)
-	$(CXX) -o $@ $(LDFLAGS) $(LIBDIRS) $(OBJ) $(PLATEXTRA) -L. $(LIB_CORE) $(LIBS)
+	@$(if $(Q), $(shell echo echo CXX $<),)
+	$(Q)$(CXX) -o $@ $(LDFLAGS) $(LIBDIRS) $(OBJ) $(PLATEXTRA) -L. $(LIB_CORE) $(LIBS)
 
 %.o: %.c
-	$(CC) -c -o $@ $(CFLAGS) $<
+	@$(if $(Q), $(shell echo echo CC $<),)
+	$(Q)$(CC) -c -o $@ $(CFLAGS) $<
 
 %.o: %.cpp
-	$(CXX) -c -o $@ $(CFLAGS) $<
+	@$(if $(Q), $(shell echo echo CXX $<),)
+	$(Q)$(CXX) -c -o $@ $(CFLAGS) $<
 
 clean:
-	rm -f $(DEPENDS) $(OBJ) $(OUTPUT)
+	@$(if $(Q), $(shell echo echo RM),)
+	$(Q)rm -f $(DEPENDS) $(OBJ) $(OUTPUT)
 
 #---------------------------------------------------------------------------------
 # you need a rule like this for each extension you use as binary data