Mark
98 lines
2.0 KiB
Makefile
98 lines
2.0 KiB
Makefile
O?=build
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STAGE=$(O)/stage
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KERNEL_HDRS?=kernel-hdr
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CC=$(CROSS_COMPILE)gcc
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DIRS=$(O) \
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$(O)/libc \
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$(STAGE)
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HDRS=$(shell find $(S) -type f -name "*.h")
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STAGE_BIN=$(STAGE)/init \
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$(STAGE)/bin/hexd \
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$(STAGE)/bin/ls \
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$(STAGE)/bin/reboot
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CFLAGS=-ffreestanding \
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-nostdlib \
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-msse \
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-msse2 \
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-Ilibc/include \
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-ggdb \
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-O0 \
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-I$(KERNEL_HDRS)
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usr_LDFLAGS=-nostdlib \
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-lgcc \
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-Tlibc/program.ld
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usr_STATIC_LIBS=$(O)/libc.a
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libc_CRTI=$(O)/libc/crti.o
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libc_CRTN=$(O)/libc/crtn.o
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libc_OBJS=$(O)/libc/crt0.o \
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$(O)/libc/syscall.o \
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$(O)/libc/vsnprintf.o \
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$(O)/libc/printf.o \
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$(O)/libc/string.o \
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$(O)/libc/errno.o \
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$(O)/libc/stdio.o \
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$(O)/libc/init.o \
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$(O)/libc/malloc.o \
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$(O)/libc/dirent.o \
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$(O)/libc/signal.o \
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$(O)/libc/global.o \
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$(O)/libc/time.o
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sys_CRTBEGIN=$(shell $(CC) $(CFLAGS) -print-file-name=crtbegin.o)
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sys_CRTEND=$(shell $(CC) $(CFLAGS) -print-file-name=crtend.o)
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all: mkdirs $(O)/initrd.img
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clean:
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rm -rf $(O)
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$(O)/initrd.img: mkstage-etc $(STAGE_BIN)
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cd $(STAGE) && tar czf $(abspath $@) *
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mkdirs:
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mkdir -p $(DIRS)
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mkstage-etc:
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mkdir -p $(STAGE)/dev $(STAGE)/mnt $(STAGE)/bin
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chmod +x $(STAGE)/etc/file.txt
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cp -r etc $(STAGE)
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# Application building
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$(STAGE)/init: init.c $(libc_CRTI) $(libc_CRTN) $(O)/libc.a
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@printf " CC\t%s\n" $(@:$(STAGE)/%=/%)
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@$(CC) -o $@ $(CFLAGS) $(usr_LDFLAGS) \
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$(libc_CRTI) \
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$(sys_CRTBEGIN) \
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init.c \
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$(sys_CRTEND) \
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$(libc_CRTN) \
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$(usr_STATIC_LIBS)
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$(STAGE)/bin/%: core/bin/%.c $(libc_CRTI) $(libc_CRTN) $(O)/libc.a
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@printf " CC\t%s\n" $(@:$(STAGE)/%=/%)
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@$(CC) -o $@ $(CFLAGS) $(usr_LDFLAGS) \
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$(libc_CRTI) \
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$(sys_CRTBEGIN) \
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$< \
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$(sys_CRTEND) \
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$(libc_CRTN) \
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$(usr_STATIC_LIBS)
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# libc building
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$(O)/libc.a: $(libc_OBJS)
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@printf " AR\t%s\n" $(@:$(O)/%=%)
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@$(AR) rcs $@ $(libc_OBJS)
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$(O)/libc/%.o: libc/%.c $(HDRS)
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@printf " CC\t%s\n" $(@:$(O)/%=%)
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@$(CC) -c -o $@ $(CFLAGS) $<
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$(O)/libc/%.o: libc/%.S
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@printf " AS\t%s\n" $(@:$(O)/%=%)
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@$(CC) -c -o $@ $(CFLAGS) $<
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