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Use GCC dependency generation in Makefiles #22

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Merged
differrari merged 1 commit into from
Aug 10, 2025
Merged

Use GCC dependency generation in Makefiles #22

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1 change: 1 addition & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -13,3 +13,4 @@ dump
.cache/*
compile_commands.json
.clangd
*.d
12 changes: 8 additions & 4 deletions kernel/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -9,11 +9,13 @@ endif
LDFLAGS := $(LDFLAGS_BASE) -T $(shell ls *.ld) --defsym=LOAD_ADDR=$(LOAD_ADDR)

CLEAN_OBJS := $(shell find . -name '*.o')
CLEAN_DEPS := $(shell find . -name '*.d')
C_SRC := $(shell find . -name '*.c')
ASM_SRC := $(shell find . -name '*.S')
CPP_SRC := $(shell find . -name '*.cpp')
OBJ := $(C_SRC:.c=.o) $(ASM_SRC:.S=.o) $(CPP_SRC:.cpp=.o)
OBJL := $(filter-out ./boot.o,$(OBJ))
DEP := $(C_SRC:.c=.d) $(ASM_SRC:.S=.d) $(CPP_SRC:.cpp=.d)

ELF := ../kernel.elf
TARGET := ../kernel.img
Expand All @@ -25,11 +27,13 @@ $(TARGET): ../shared/libshared.a $(OBJ)
$(OBJCOPY) -O binary $(ELF) $@

%.o: %.S
$(CC) $(CFLAGS) -c $< -o $@
$(CC) $(CFLAGS) -c -MMD -MP $< -o $@
%.o: %.c
$(CC) $(CFLAGS) $(CONLY_FLAGS_BASE) -c $< -o $@
$(CC) $(CFLAGS) $(CONLY_FLAGS_BASE) -c -MMD -MP $< -o $@
%.o: %.cpp
$(CC) $(CFLAGS) -fno-rtti -c $< -o $@
$(CC) $(CFLAGS) -fno-rtti -c -MMD -MP $< -o $@

clean:
rm -f $(CLEAN_OBJS) $(ELF) $(TARGET)
rm -f $(CLEAN_OBJS) $(CLEAN_DEPS) $(ELF) $(TARGET)

-include $(DEP)
12 changes: 8 additions & 4 deletions shared/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -2,10 +2,12 @@
CFLAGS := $(CFLAGS_BASE) -I. -I../kernel -Wno-unused-parameter

CLEAN_OBJS := $(shell find . -name '*.o')
CLEAN_DEPS := $(shell find . -name '*.d')
C_SRC := $(shell find . -name '*.c')
CPP_SRC := $(shell find . -name '*.cpp')
ASM_SRC := $(shell find . -name '*.S')
OBJ := $(C_SRC:.c=.o) $(ASM_SRC:.S=.o) $(CPP_SRC:.cpp=.o)
DEP := $(C_SRC:.c=.d) $(ASM_SRC:.S=.d) $(CPP_SRC:.cpp=.d)

TARGET := libshared.a

Expand All @@ -17,13 +19,15 @@ $(TARGET): $(OBJ)
$(AR) rcs $@ $^

%.o: %.S
$(CC) $(CFLAGS) -c $< -o $@
$(CC) $(CFLAGS) -c -MMD -MP $< -o $@

%.o: %.c
$(CC) $(CFLAGS) $(CONLY_FLAGS_BASE) -c $< -o $@
$(CC) $(CFLAGS) $(CONLY_FLAGS_BASE) -c -MMD -MP $< -o $@

%.o: %.cpp
$(CC) $(CFLAGS) -fno-rtti -c $< -o $@
$(CC) $(CFLAGS) -fno-rtti -c -MMD -MP $< -o $@

clean:
rm -f $(CLEAN_OBJS) $(TARGET)
rm -f $(CLEAN_OBJS) $(CLEAN_DEPS) $(TARGET)

-include $(DEP)
12 changes: 8 additions & 4 deletions user/Makefile
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Expand Up @@ -3,9 +3,11 @@ CFLAGS := $(CFLAGS_BASE) -I. -I../shared -Wno-unused-parameter
LDFLAGS := -T $(shell ls *.ld)

CLEAN_OBJS := $(shell find . -name '*.o')
CLEAN_DEPS := $(shell find . -name '*.d')
C_SRC := $(shell find . -name '*.c')
CPP_SRC := $(shell find . -name '*.cpp')
OBJ := $(C_SRC:.c=.o) $(CPP_SRC:.cpp=.o)
DEP := $(C_SRC:.c=.d) $(CPP_SRC:.cpp=.d)

NAME := $(notdir $(CURDIR))
ELF := $(NAME).elf
Expand All @@ -21,13 +23,15 @@ $(LOCATION)$(TARGET): $(OBJ)
$(OBJCOPY) -O binary $(LOCATION)$(ELF) $@

%.o: %.S
$(CC) $(CFLAGS) -c $< -o $@
$(CC) $(CFLAGS) -c -MMD -MP $< -o $@

%.o: %.c
$(CC) $(CFLAGS) $(CONLY_FLAGS_BASE) -c $< -o $@
$(CC) $(CFLAGS) $(CONLY_FLAGS_BASE) -c -MMD -MP $< -o $@

%.o: %.cpp
$(CC) $(CFLAGS) -fno-rtti -c $< -o $@
$(CC) $(CFLAGS) -fno-rtti -c -MMD -MP $< -o $@

clean:
rm -f $(CLEAN_OBJS) $(TARGET)
rm -f $(CLEAN_OBJS) $(CLEAN_DEPS) $(TARGET)

-include $(DEP)