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### Copyright (c) 2025 Freya Murphy <freya@freyacat.org>
.PHONY: build clean
.SILENT:
AS ?= as
AR ?= ar
CC ?= cc
LD ?= ld
CPP ?= cpp
CPPFLAGS += -Iinclude
CFLAGS += -O2
CFLAGS += -std=c11
CFLAGS += -Wall -Wextra -pedantic
CFLAGS += -no-pie -fPIC -fno-stack-protector
CFLAGS += -fno-omit-frame-pointer -ffreestanding
CFLAGS += -fno-builtin -mcmodel=large
CFLAGS += -D DEBUG -g
CFLAGS += $(CPPFLAGS)
LDFLAGS += -nmagic -nostdlib
LDFLAGS += -z noexecstack
USER=*
LIB=lib
BIN=../bin/user
H_SRC = $(shell find include -type f -name "*.h")
LIBA_SRC = $(shell find $(LIB) -type f -name "*.S")
LIBA_OBJ = $(patsubst %.S,$(BIN)/%.S.o,$(LIBA_SRC))
LIBC_SRC = $(shell find $(LIB) -type f -name "*.c")
LIBC_OBJ = $(patsubst %.c,$(BIN)/%.o,$(LIBC_SRC))
USER_SRC = $(shell find $(USER) -maxdepth 0 -type f -name "*.c")
USER_OBJ = $(patsubst %.c,$(BIN)/%.o,$(USER_SRC))
USER_PROJ = $(patsubst %.o,%,$(USER_OBJ))
build: $(USER_PROJ)
clean:
rm -fr $(BIN)
$(LIBA_OBJ): $(BIN)/%.S.o : %.S $(H_SRC)
mkdir -p $(@D)
printf "\033[33m AS \033[0m%s\n" user/$<
$(CPP) $(CPPFLAGS) -o $@.cpp $<
$(AS) -o $@ $@.cpp
$(LIBC_OBJ): $(BIN)/%.o : %.c $(H_SRC)
mkdir -p $(@D)
printf "\033[34m CC \033[0m%s\n" user/$<
$(CC) -c $(CFLAGS) -o $@ $<
$(BIN)/libc.a: $(LIBA_OBJ) $(LIBC_OBJ)
@mkdir -p $(@D)
printf "\033[35m AR \033[0m%s\n" $(shell echo $@ | cut -c 4-)
$(AR) rcs $@ $(LIBA_OBJ) $(LIBC_OBJ)
$(USER_OBJ): $(BIN)/%.o : %.c $(H_SRC)
mkdir -p $(@D)
printf "\033[34m CC \033[0m%s\n" user/$<
$(CC) -c $(CFLAGS) -o $@ $<
$(USER_PROJ): % : %.o $(BIN)/libc.a
mkdir -p $(@D)
printf "\033[32m LD \033[0m%s\n" $(shell echo $@ | cut -c 4-)
$(LD) $(LDFLAGS) -T ../config/user.ld -o $@ $< $(BIN)/libc.a
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