57 lines
2.2 KiB
CMake
57 lines
2.2 KiB
CMake
cmake_minimum_required(VERSION 3.10)
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set(CMAKE_C_COMPILER_WORKS 1) # todo: find the proper fix for this, rn this is
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# b/c cmake expects libc to be avaliable and it's not under nixos
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project(razzle C ASM)
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# Check architecture is passed and is supported
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set(ALLOWED_ARCHS "i386")
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if(NOT DEFINED ARCH)
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message(FATAL_ERROR "Architecture not set s not defined. Supported architectures are: ${ALLOWED_ARCHS}")
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endif()
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list(FIND ALLOWED_ARCHS "${ARCH}" ARCH_INDEX)
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if(ARCH_INDEX EQUAL -1)
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message(FATAL_ERROR "Unsupported architecture: ${ARCH}. Supported architectures are: ${ALLOWED_ARCHS}.")
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endif()
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message(STATUS "Building RAZZLE for ${ARCH}.")
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set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
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set(CMAKE_C_STANDARD 99)
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set(CMAKE_C_FLAGS "-ffreestanding -g -Wall -Wextra -mgeneral-regs-only -DARCH_I386")
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set(CMAKE_ASM_FLAGS "-g")
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set(LINKER_SCRIPT ${CMAKE_SOURCE_DIR}/linker.ld)
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# Common source files
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FILE(GLOB_RECURSE SOURCES kernel/*.c)
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# Architecture Specific Files
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if (ARCH STREQUAL "i386")
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set(CMAKE_C_COMPILER i686-elf-gcc)
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set(CMAKE_ASM_COMPILER i686-elf-as)
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set(LD i686-elf-gcc)
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FILE(GLOB ASM_SOURCES arch/i386/*.s)
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SET(ARCH_FLAG "-DARCH_I386")
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endif()
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add_executable(kernel.elf ${SOURCES} ${ASM_SOURCES})
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set_target_properties(kernel.elf PROPERTIES LINK_FLAGS "-T ${LINKER_SCRIPT} -ffreestanding -O2 -nostdlib -lgcc -g ${ARCH_FLAG}" DEPENDS pci_supp)
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add_custom_command(OUTPUT os.iso
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COMMAND cp kernel.elf ../iso/boot/kernel.elf
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COMMAND genisoimage -R -b boot/grub/stage2_eltorito -no-emul-boot -boot-load-size 4 -A os -input-charset utf8 -quiet -boot-info-table -o os.iso ../iso
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DEPENDS kernel.elf
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COMMENT "Generating OS ISO"
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)
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# Supplemental PCI data to be loaded into memory
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add_custom_target(pci_supp
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COMMAND xxd -i ../build_supp/pci/pci.ids > ../supp/pci_supp.c
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COMMENT "Generating Supplemental PCI data"
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)
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# Run & Debug targets
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add_custom_target(run
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COMMAND qemu-system-i386 -boot d -m 512 -machine type=pc-i440fx-3.1 -serial mon:stdio -device piix3-ide,id=ide -drive id=disk,file=/dev/null,format=raw,if=none -device ide-hd,drive=disk,bus=ide.1 -device ide-cd,drive=cdrom -drive id=cdrom,file=os.iso,media=cdrom,if=none
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DEPENDS os.iso)
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add_custom_target(debug COMMAND ../debug.sh DEPENDS os.iso)
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