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PATH := $(shell pwd)/toolchain/prefix/bin/:$(PATH)
AR = x86_64-camellia-ar
AS = x86_64-camellia-as
CC = x86_64-camellia-gcc
CFLAGS += -g -std=gnu99 -O2 -ftrack-macro-expansion=0
CFLAGS += -Wall -Wextra -Wold-style-definition -Werror=implicit-function-declaration
CFLAGS += -Wno-address-of-packed-member -Werror=incompatible-pointer-types
KERNEL_CFLAGS = $(CFLAGS) -ffreestanding -mno-sse -mgeneral-regs-only \
--sysroot=src/kernel/sysroot/ -Isrc/ -Isrc/libk/include/ -fno-pie
LIBC_CFLAGS = $(CFLAGS) -ffreestanding -Isrc/
USER_CFLAGS = $(CFLAGS)
SPARSEFLAGS = -$(KERNEL_CFLAGS) -Wno-non-pointer-null
PORTS =
define from_sources
$(patsubst src/%,out/obj/%.o,$(shell find $(1) -type f,l -name '*.[csS]'))
endef
.PHONY: all portdeps check clean ports
all: portdeps out/boot.iso check out/fs.e2
portdeps: out/libc.a out/libm.a src/libc/include/__errno.h
check: $(shell find src/kernel/ -type f -name *.c)
@echo $^ | xargs -n 1 sparse $(SPARSEFLAGS)
clean:
rm -rf out/
out/boot.iso: out/fs/boot/kernel out/fs/boot/grub/grub.cfg out/fs/boot/init
@grub-mkrescue -o $@ out/fs/ > /dev/null 2>&1
out/fs/boot/kernel: src/kernel/arch/amd64/linker.ld \
$(call from_sources, src/kernel/) \
$(call from_sources, src/libk/)
@mkdir -p $(@D)
@$(CC) \
-nostdlib \
-Wl,-zmax-page-size=4096 -Wl,--no-warn-mismatch -Wl,-no-pie \
-T $^ -o $@
@grub-file --is-x86-multiboot2 $@ || echo "$@ has an invalid multiboot2 header"
@grub-file --is-x86-multiboot2 $@ || rm $@; test -e $@
out/libc.a: $(call from_sources, src/libc/) $(call from_sources, src/libk/)
@mkdir -p $(@D)
@$(AR) rcs $@ $^
out/libm.a:
@mkdir -p $(@D)
@$(AR) rcs $@ $^
out/bootstrap: out/bootstrap.elf
@objcopy -O binary $^ $@
out/bootstrap.elf: src/bootstrap/linker.ld $(call from_sources, src/bootstrap/) out/libc.a
@mkdir -p $(@D)
@$(CC) -nostdlib -Wl,-no-pie -T $^ -o $@
out/fs/boot/init: out/bootstrap out/initrd.tar
@mkdir -p $(@D)
@cat $^ > $@
out/fs/boot/grub/grub.cfg: src/kernel/arch/amd64/grub.cfg
@mkdir -p $(@D)
@cp $< $@
out/fs.e2:
@mkfs.ext2 $@ 1024 > /dev/null
define userbin_template =
out/initrd/bin/amd64/$(1): $(call from_sources, src/cmd/$(1)) out/libc.a
@mkdir -p $$(@D)
@$(CC) $$^ -o $$@
endef
USERBINS := $(shell ls src/cmd)
$(foreach bin,$(USERBINS),$(eval $(call userbin_template,$(bin))))
# don't build the example implementation from libext2
out/obj/cmd/ext2fs/ext2/example.c.o:
@touch $@
# portdeps is phony, so ports/% is automatically "phony" too
ports: $(patsubst %,ports/%,$(PORTS))
ports/%: portdeps
+$@/port install
out/initrd/%: sysroot/%
@mkdir -p $(@D)
@cp $< $@
out/initrd.tar: $(patsubst sysroot/%,out/initrd/%,$(shell find sysroot/ -type f)) \
$(patsubst %,out/initrd/bin/amd64/%,$(USERBINS)) \
$(shell find out/initrd/) \
ports
@cd out/initrd; tar chf ../initrd.tar *
out/obj/%.s.o: src/%.s
@mkdir -p $(@D)
@$(AS) $^ -o $@
out/obj/%.S.o: src/%.S
@mkdir -p $(@D)
@$(CC) $(CFLAGS) -c $^ -o $@
out/obj/libk/%.c.o: src/libk/%.c
@mkdir -p $(@D)
@$(CC) $(KERNEL_CFLAGS) -fPIC -c $^ -o $@
out/obj/kernel/%.c.o: src/kernel/%.c
@mkdir -p $(@D)
@$(CC) $(KERNEL_CFLAGS) -fPIC -c $^ -o $@
out/obj/%.c.o: src/%.c
@mkdir -p $(@D)
@$(CC) $(USER_CFLAGS) -fPIC -c $^ -o $@
out/obj/libc/%.c.o: src/libc/%.c
@mkdir -p $(@D)
@$(CC) $(LIBC_CFLAGS) -fPIC -c $^ -o $@
out/obj/libc/vendor/%.c.o: src/libc/vendor/%.c
@mkdir -p $(@D)
@$(CC) $(LIBC_CFLAGS) -fPIC -c $^ -o $@ \
-DLACKS_TIME_H -DLACKS_FCNTL_H -DLACKS_SYS_PARAM_H \
-DMAP_ANONYMOUS -DHAVE_MORECORE=0 -DNO_MALLOC_H \
-Wno-expansion-to-defined -Wno-old-style-definition
out/obj/bootstrap/%.c.o: src/bootstrap/%.c
@mkdir -p $(@D)
@$(CC) $(USER_CFLAGS) -fno-pic -c $^ -o $@
out/obj/kernel/arch/amd64/32/%.c.o: src/kernel/arch/amd64/32/%.c
@mkdir -p $(@D)
@$(CC) $(KERNEL_CFLAGS) -m32 -c $^ -o $@
out/obj/kernel/arch/amd64/32/%.s.o: src/kernel/arch/amd64/32/%.s
@mkdir -p $(@D)
@$(CC) -m32 -c $^ -o $@
src/libc/include/__errno.h: src/libc/include/__errno.h.awk src/libk/include/camellia/errno.h
@awk -f $^ > $@
src/libc/syscall.c: src/libc/syscall.c.awk src/libk/include/camellia/syscalls.h
@awk -f $^ > $@
|
