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08fc016b8b
- Add comment about GLOB usage in kernel/CMakeLists.txt - Improve clarity of optional screenshot capture in qemu-test.yml - All code review comments addressed - Security scan passed with 0 alerts Co-authored-by: johndoe6345789 <224850594+johndoe6345789@users.noreply.github.com>
98 lines
2.5 KiB
CMake
98 lines
2.5 KiB
CMake
# MetalOS Kernel CMakeLists.txt
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# Builds minimal kernel binary
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cmake_minimum_required(VERSION 3.16)
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project(MetalOS_Kernel C ASM)
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# Source files
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# Note: Using GLOB for simplicity. For production, consider listing files explicitly.
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# If new files aren't detected, re-run cmake configuration.
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file(GLOB KERNEL_C_SOURCES "src/*.c")
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file(GLOB KERNEL_ASM_SOURCES "src/*.asm")
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set(KERNEL_SOURCES
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${KERNEL_C_SOURCES}
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)
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# Find NASM assembler
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find_program(NASM nasm)
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if(NOT NASM)
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message(WARNING "NASM not found - assembly files will not be built")
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message(WARNING "Install NASM: sudo apt-get install nasm")
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else()
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message(STATUS "Found NASM: ${NASM}")
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# Assemble each .asm file
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set(KERNEL_ASM_OBJECTS "")
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foreach(asm_file ${KERNEL_ASM_SOURCES})
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get_filename_component(asm_name ${asm_file} NAME_WE)
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set(asm_obj "${CMAKE_CURRENT_BINARY_DIR}/${asm_name}.o")
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add_custom_command(
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OUTPUT ${asm_obj}
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COMMAND ${NASM} -f elf64 ${asm_file} -o ${asm_obj}
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DEPENDS ${asm_file}
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COMMENT "Assembling ${asm_name}.asm"
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VERBATIM
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)
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list(APPEND KERNEL_ASM_OBJECTS ${asm_obj})
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endforeach()
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endif()
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# Compiler flags for kernel
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set(KERNEL_CFLAGS
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-Wall
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-Wextra
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-Werror
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-ffreestanding
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-fno-stack-protector
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-mno-red-zone
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-mcmodel=large
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-O2
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)
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# Create object library
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add_library(kernel_obj OBJECT ${KERNEL_SOURCES})
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target_include_directories(kernel_obj PRIVATE include)
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target_compile_options(kernel_obj PRIVATE ${KERNEL_CFLAGS})
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# Create kernel binary
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add_executable(kernel_elf $<TARGET_OBJECTS:kernel_obj> ${KERNEL_ASM_OBJECTS})
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set_target_properties(kernel_elf PROPERTIES
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OUTPUT_NAME metalos.elf
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LINKER_LANGUAGE C
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)
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target_link_options(kernel_elf PRIVATE
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-nostdlib
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-T ${CMAKE_CURRENT_SOURCE_DIR}/linker.ld
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)
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# Custom command to create flat binary
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add_custom_command(
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OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/metalos.bin
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COMMAND ${CMAKE_OBJCOPY}
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-O binary
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$<TARGET_FILE:kernel_elf>
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${CMAKE_CURRENT_BINARY_DIR}/metalos.bin
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DEPENDS kernel_elf
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COMMENT "Creating kernel flat binary"
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VERBATIM
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)
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# Custom target for the binary
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add_custom_target(kernel_bin ALL
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DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/metalos.bin
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)
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# Install target
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install(FILES ${CMAKE_CURRENT_BINARY_DIR}/metalos.bin
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DESTINATION boot
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)
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# Print status
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message(STATUS "Kernel configuration:")
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message(STATUS " Sources: ${KERNEL_SOURCES}")
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message(STATUS " Output: metalos.bin")
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