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# arguments are not strictly necessary to build
CC_EXTRA_ARGS = -Wall -Wextra -Og -ggdb
.PHONY: default
default: build/disk.iso
# command and arguments that you should be careful about changing
NASM = nasm
CC = toolchain/usr/bin/x86_64-elf-c++
AR = toolchain/usr/bin/x86_64-elf-ar
LD = toolchain/usr/bin/x86_64-elf-ld
KERNEL_INCLUDES = \
dependencies/limine \
dependencies/mintsuki-headers \
kernel/include
USER_INCLUDES = \
dependencies/mintsuki-headers \
euler/include \
$(wildcard libraries/*/include)
NASM_ARGS = -f elf64
CC_ARGS_COMMON = -std=c++20 -static -mno-sse -Iinclude ${CC_EXTRA_ARGS}
CC_ARGS_KERNEL = \
${CC_ARGS_COMMON} -ffreestanding -fno-exceptions \
-fno-rtti -mcmodel=kernel ${KERNEL_INCLUDES:%=-I%}
CC_ARGS_USER = ${CC_ARGS_COMMON} ${USER_INCLUDES:%=-I%}
LD_ARGS = -z noexecstack
LIBDIR = toolchain/usr/x86_64-elf/lib
SOURCES_FIND = -type f -regex '.*\.\(asm\|cpp\)'
# kernel section
build/kernel/%.asm.o: kernel/%.asm
@mkdir -p ${@D}
${NASM} ${NASM_ARGS} $^ -o $@
build/kernel/%.cpp.o: kernel/%.cpp
@mkdir -p ${@D}
${CC} -c ${CC_ARGS_KERNEL} $^ -o $@
KERNEL_SOURCES = $(shell find kernel/source ${SOURCES_FIND})
build/kernel.elf: ${KERNEL_SOURCES:%=build/%.o}
${LD} ${LD_ARGS} -T kernel/link.ld $^ -o $@
# euler section
build/euler/%.asm.o: euler/%.asm
@mkdir -p ${@D}
${NASM} ${NASM_ARGS} $^ -o $@
build/euler/%.cpp.o: euler/%.cpp
@mkdir -p ${@D}
${CC} -c ${CC_ARGS_USER} -ffreestanding $^ -o $@
EULER_SOURCES = $(shell find euler/source ${SOURCES_FIND})
${LIBDIR}/crt0.o ${LIBDIR}/libc.a ${LIBDIR}/libg.a ${LIBDIR}/libm.a build/euler.a&: ${EULER_SOURCES:%=build/%.o}
${AR} rcs build/euler.a $^
cp build/euler.a ${LIBDIR}/libc.a
${NASM} ${NASM_ARGS} /dev/null -o ${LIBDIR}/crt0.o
${AR} rcs ${LIBDIR}/libg.a ${LIBDIR}/crt0.o
${AR} rcs ${LIBDIR}/libm.a ${LIBDIR}/crt0.o
# libraries and applications section
ALL_LIBRARIES = daguerre pake
ALL_APPLICATIONS = clock goldman hello init
clock_LIBRARIES = daguerre pake
goldman_LIBRARIES = daguerre
hello_LIBRARIES = daguerre pake
init_LIBRARIES =
build/%.cpp.o: %.cpp
@mkdir -p ${@D}
${CC} -c ${CC_ARGS_USER} $^ -o $@
# ${1} = library name
define LIBRARY_TEMPLATE =
${1}_SOURCES = $$(shell find libraries/${1}/source $${SOURCES_FIND})
$${LIBDIR}/lib${1}.a build/libraries/lib${1}.a&: $${${1}_SOURCES:%=build/%.o}
$${AR} rcs build/libraries/lib${1}.a $$^
cp build/libraries/lib${1}.a $${LIBDIR}/lib${1}.a
endef
# ${1} = application name
define APPLICATION_TEMPLATE =
${1}_SOURCES = $$(shell find applications/${1}/source $${SOURCES_FIND})
build/applications/${1}.elf: $${${1}_SOURCES:%=build/%.o} $${${1}_LIBRARIES:%=$${LIBDIR}/lib%.a} $${LIBDIR}/libc.a
$${CC} ${CC_ARGS_USER} $${${1}_SOURCES:%=build/%.o} $$(patsubst %,-l%,$${${1}_LIBRARIES}) -o $$@
endef
$(foreach library,${ALL_LIBRARIES},$(eval $(call LIBRARY_TEMPLATE,${library})))
$(foreach application,${ALL_APPLICATIONS},$(eval $(call APPLICATION_TEMPLATE,${application})))
# initfs and disk section
build/initfs.tgz: ${ALL_APPLICATIONS:%=build/applications/%.elf}
rm -rf build/initfs
cp -r skeleton build/initfs
$(foreach application,${ALL_APPLICATIONS},cp build/applications/${application}.elf build/initfs/bin/${application}; )
cd build/initfs && tar czf ../initfs.tgz .
build/disk.iso: build/kernel.elf build/initfs.tgz
rm -rf build/iso
mkdir build/iso
cp dependencies/limine/bin/limine-bios.sys dependencies/limine/bin/limine-bios-cd.bin \
build/kernel.elf build/initfs.tgz build/iso/
echo 'TIMEOUT=0' > build/iso/limine.cfg
echo ':Hilbert OS' >> build/iso/limine.cfg
echo 'PROTOCOL=limine' >> build/iso/limine.cfg
echo 'KERNEL_PATH=boot:///kernel.elf' >> build/iso/limine.cfg
echo 'MODULE_PATH=$$boot:///initfs.tgz' >> build/iso/limine.cfg
echo 'MODULE_CMDLINE=initfs' >> build/iso/limine.cfg
xorriso -as mkisofs -b limine-bios-cd.bin -no-emul-boot -boot-load-size 4 \
-boot-info-table --protective-msdos-label build/iso -o $@
# phony targets
.PHONY: run
run: build/disk.iso
gdb -x qemu.gdb
.PHONY: clean
clean:
rm -rf build ${LIBDIR}/crt0.o ${LIBDIR}/libc.a ${LIBDIR}/libg.a ${LIBDIR}/libm.a $(foreach library,${ALL_LIBRARIES},${LIBDIR}/lib${library}.a)
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