From 6d3afeb07540ccf612787031fb87eb6122064a93 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mario=20H=C3=BCttel?= <mario.huettel@gmx.net>
Date: Mon, 1 Aug 2022 23:44:55 +0200
Subject: [PATCH] Update makefile to use dependenccy files and create obj
 folder

---
 .gitignore |  2 ++
 Makefile   | 59 +++++++++++++++++++++++++++---------------------------
 2 files changed, 31 insertions(+), 30 deletions(-)

diff --git a/.gitignore b/.gitignore
index 628444f..04ca85c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 project.elf
+*.lss
 *.o
 *.map
 *.bin
@@ -6,3 +7,4 @@ project.elf
 *.user
 *.user*
 *.user.*
+obj/*
diff --git a/Makefile b/Makefile
index 1a6c15b..89b0105 100644
--- a/Makefile
+++ b/Makefile
@@ -7,8 +7,9 @@ CFILES 	= main.c syscalls/syscalls.c setup/system_init.c startup/startup_stm32f7
 ASFILES =
 INCLUDEPATH = -Iinclude
 
+OBJDIR := obj
 
-target	= project
+TARGET	= project
 LIBRARYPATH = -Lstartup -Ldsp
 LIBRARIES = -larm_cortexM7lfsp_math
 
@@ -29,19 +30,19 @@ SIZE=arm-none-eabi-size
 LFLAGS = -mlittle-endian -mthumb -mcpu=cortex-m7 -mthumb-interwork 
 LFLAGS += -mfloat-abi=hard -mfpu=fpv5-sp-d16 --disable-newlib-supplied-syscalls -nostartfiles
 LFLAGS += -Tstm32f746zgt-axim.ld -Wl,-Map=$(mapfile).map -Wl,--gc-sections
+LFLAGS += -Wl,--print-memory-usage
 
-CFLAGS = -c -fmessage-length=0 -mlittle-endian -mthumb -mcpu=cortex-m7 -mthumb-interwork
+CFLAGS = -fmessage-length=0 -mlittle-endian -mthumb -mcpu=cortex-m7 -mthumb-interwork
 CFLAGS += -mfloat-abi=hard -mfpu=fpv5-sp-d16 -nostartfiles -Wall
 
 ####################################################################################
 
-OBJ = $(CFILES:%.c=%.c.o)
-ASOBJ = $(ASFILES:%.S=%.S.o)
-
-default: $(target).elf
-
+OBJ = $(CFILES:%.c=$(OBJDIR)/%.c.o)
+ASOBJ = $(ASFILES:%.S=$(OBJDIR)/%.S.o)
 
+DEPENDENCY_FILES = $(CFILES:%.c=$(OBJDIR)/%.c.d) $(ASFILES:%.S=$(OBJDIR)/%.S.d)
 
+default: $(TARGET).elf
 
 %.bin: %.elf
 	$(OBJCOPY) -O binary $^ $@
@@ -50,37 +51,35 @@ default: $(target).elf
 
 
 #Linking
-$(target).elf: $(OBJ) $(ASOBJ)
-	$(CC) $(LFLAGS) $(LIBRARYPATH) -o $@ $^ $(LIBRARIES)
-	$(SIZE) $@	
+$(TARGET).elf: $(OBJ) $(ASOBJ)
+	@$(CC) $(LFLAGS) $(LIBRARYPATH) -o $@ $^ $(LIBRARIES)
+	@$(SIZE) $@	
 
 #Compiling
-%.c.o: %.c
-	$(CC) $(CFLAGS) $(INCLUDEPATH) $(DEFINES) -o $@ $<
+$(OBJ):
+	@echo [CC] $@
+	@mkdir -p $(@D)
+	@$(CC) $(CFLAGS) -MMD -MT $@ $(INCLUDEPATH) $(DEFINES) -o $@ -c $(@:$(OBJDIR)/%.c.o=%.c)
 	
-%.S.o: %.S
-	$(CC) $(CFLAGS) $(INCLUDEPATH) $(DEFINES) -o $@ $<
+$(ASOBJ):
+	@echo [AS] $@
+	@mkdir -p $(@D)
+	@$(CC) $(CFLAGS) -MMD -MT $@ $(INCLUDEPATH) $(DEFINES) -o $@ -c $(@:$(OBJDIR)/%.S.o=%.S)
 
-.PHONY: qtproject clean mrproper objcopy disassemble
+.PHONY: clean mrproper objcopy disassemble
 
-disassemble: $(target).elf
-	$(OBJDUMP) -D -s $< > $(target).lss
+disassemble: $(TARGET).elf
+	$(OBJDUMP) -D -s $< > $(TARGET).lss
 
-objcopy: $(target).bin $(target).hex
+objcopy: $(TARGET).bin $(TARGET).hex
 
 mrproper:
-	rm -f $(target).pro
+	rm -f $(TARGET).pro
 
 clean:
-	rm -f $(target).elf $(target).bin $(target).hex $(OBJ) $(ASOBJ) $(mapfile).map $(target).lss
-qtproject:
-	echo -e "TEMPLATE = app\nCONFIG -= console app_bundle qt" > $(target).pro
-	echo -e "SOURCES += $(CFILES) $(ASFILES)" >> $(target).pro
-	echo -ne "INCLUDEPATH += " >> $(target).pro
-	echo "$(INCLUDEPATH)" | sed "s!-I!./!g" >> $(target).pro
-	echo -ne "HEADERS += " >> $(target).pro
-	find -name "*.h" | tr "\\n" " " >> $(target).pro
-	echo -ne "\nDEFINES += " >> $(target).pro
-	echo "$(DEFINES)" | sed "s/-D//g" >> $(target).pro
-
+	@echo [RM] in $(OBJDIR)
+	@rm -f $(TARGET).elf $(TARGET).bin $(TARGET).hex $(OBJ) $(ASOBJ) $(mapfile).map $(TARGET).lss $(DEPENDENCY_FILES)
+	@rm -rf $(OBJDIR)/*
 
+# Include dependency files, if available
+-include $(DEPENDENCY_FILES)