145 lines
4.7 KiB
CMake
145 lines
4.7 KiB
CMake
########################################
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# The University of Agder Operating System: UiAOS
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# Languages: C, C++, and NASM Assembly
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# Tip: Use Ctrl+Shift+P in Visual Studio Code to get started with CMake.
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########################################
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# Skip compiler self-tests (saves time, avoids errors with some cross compilers)
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set(CMAKE_C_COMPILER_WORKS 1)
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set(CMAKE_CXX_COMPILER_WORKS 1)
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# Minimum required CMake version
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cmake_minimum_required(VERSION 3.22.1)
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# Project name and languages used
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project(UiAOS LANGUAGES C CXX ASM_NASM)
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# Create a lock file to prevent parallel runs of CMake
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file(LOCK ${CMAKE_SOURCE_DIR} DIRECTORY GUARD FILE)
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########################################
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# CMake: Import Plugins
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########################################
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include(FetchContent)
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########################################
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# UiAOS: Variables
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########################################
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set(OS_ARCH_TARGET "i386") # x86_64
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set(OS_NAME "UiA Operating System")
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set(OS_KERNEL_NAME "uiaos")
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set(OS_KERNEL_BINARY "kernel.bin")
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set(OS_KERNEL_IMAGE "kernel.iso")
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########################################
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# Compiler Configuration
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########################################
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set(CMAKE_CXX_STANDARD 20)
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set(CMAKE_C_STANDARD 99)
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########################################
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# Assembly Configuration
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########################################
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set(CMAKE_ASM_NASM_SOURCE_FILE_EXTENSIONS "s;S;asm")
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if(OS_ARCH_TARGET STREQUAL "i386")
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set(CMAKE_ASM_NASM_OBJECT_FORMAT "elf32")
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elseif(OS_ARCH_TARGET STREQUAL "x86_64")
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set(CMAKE_ASM_NASM_OBJECT_FORMAT "elf64")
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endif()
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# Command to compile NASM files
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set(CMAKE_ASM_NASM_COMPILE_OBJECT
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"<CMAKE_ASM_NASM_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -f ${CMAKE_ASM_NASM_OBJECT_FORMAT} -o <OBJECT> <SOURCE>")
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########################################
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# OS Target
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########################################
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set(OS_KERNEL_LINKER "${CMAKE_CURRENT_SOURCE_DIR}/src/arch/${OS_ARCH_TARGET}/linker.ld")
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# Add executable target for the kernel
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add_executable(uiaos-kernel
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src/multiboot2.asm
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src/arch/i386/gdt_flush.asm
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src/kernel.c
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src/gdt.c
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src/terminal.c
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src/idt.c
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src/interrupt.c
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src/interrupt.asm
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src/keyboard.c
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)
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# Include directories for the kernel target
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target_include_directories(uiaos-kernel PUBLIC include)
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# Specify compile options for C and C++
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target_compile_options(uiaos-kernel PRIVATE
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$<$<COMPILE_LANGUAGE:C>:-Wall -Wextra -nostdinc -nostdlib -fno-builtin -fno-stack-protector -fno-stack-check -fno-lto -fPIE -m32 -march=i386 -mno-mmx -mno-sse -mno-sse2 -mno-red-zone -Wno-main -g>
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$<$<COMPILE_LANGUAGE:CXX>:-Wall -Wextra -nostdinc -nostdlib -fno-builtin -fno-stack-protector -fno-stack-check -fno-lto -fPIE -m32 -march=i386 -mno-mmx -mno-sse -mno-sse2 -mno-red-zone -g>
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$<$<OR:$<COMPILE_LANGUAGE:C>,$<COMPILE_LANGUAGE:CXX>>:-m32 -march=i386 -Wno-unused-variable -Wno-unused-parameter>
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)
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# Specify link options for C and C++
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target_link_options(uiaos-kernel PUBLIC
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$<$<OR:$<COMPILE_LANGUAGE:C>,$<COMPILE_LANGUAGE:CXX>>:-ffreestanding -nostdlib -fno-builtin -static -pie -O0 -T${OS_KERNEL_LINKER} -g>
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)
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target_link_options(
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uiaos-kernel
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PUBLIC "-ffreestanding"
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PUBLIC "-nostdlib"
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PUBLIC "-static"
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PUBLIC "-pie"
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PUBLIC "-T${OS_KERNEL_LINKER}"
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)
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# Set properties for the kernel target
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set_target_properties(uiaos-kernel PROPERTIES
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OUTPUT_NAME "${OS_KERNEL_BINARY}"
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#LINK_FLAGS "${OS_KERNEL_LINK_FLAGS}"
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)
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########################################
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# Create Empty Fat32 Disk Image
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########################################
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set(DISK_IMAGE "${CMAKE_CURRENT_BINARY_DIR}/disk.iso")
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# Custom target to create an empty FAT32 disk image of 32MB
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add_custom_target(
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create-fat32-disk
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COMMAND dd if=/dev/zero of=${DISK_IMAGE} bs=1M count=32
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COMMAND mkfs.fat -F 32 ${DISK_IMAGE}
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VERBATIM
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)
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########################################
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# OS-Image Target
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########################################
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set(ISO_DIR ${CMAKE_CURRENT_BINARY_DIR}/iso)
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set(LIMINE_CONFIG_DIR ${CMAKE_SOURCE_DIR})
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set(LIMINE_DIR /usr/local/limine)
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add_custom_target(
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uiaos-create-image
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COMMAND rm -rf ${ISO_DIR}
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COMMAND mkdir -p ${ISO_DIR}
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COMMAND cp -v $<TARGET_FILE:uiaos-kernel>
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${LIMINE_CONFIG_DIR}/limine.cfg ${LIMINE_DIR}/limine-bios.sys ${LIMINE_DIR}/limine-bios-cd.bin
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${LIMINE_DIR}/limine-uefi-cd.bin ${ISO_DIR}/
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COMMAND mkdir -p ${ISO_DIR}/EFI/BOOT
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COMMAND cp -v ${LIMINE_DIR}/BOOTX64.EFI ${ISO_DIR}/EFI/BOOT/
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COMMAND cp -v ${LIMINE_DIR}/BOOTIA32.EFI ${ISO_DIR}/EFI/BOOT/
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COMMAND xorriso -as mkisofs -b limine-bios-cd.bin
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-no-emul-boot -boot-load-size 4 -boot-info-table
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--efi-boot limine-uefi-cd.bin
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-efi-boot-part --efi-boot-image --protective-msdos-label
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${ISO_DIR} -o ${CMAKE_CURRENT_BINARY_DIR}/kernel.iso
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COMMAND ${LIMINE_DIR}/limine bios-install ${CMAKE_CURRENT_BINARY_DIR}/kernel.iso
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#COMMAND sudo rm -rf ${ISO_DIR}
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DEPENDS create-fat32-disk uiaos-kernel
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VERBATIM
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) |