Enrico Fraccaroli
153 lines
6.4 KiB
CMake
153 lines
6.4 KiB
CMake
# =============================================================================
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# Set the minimum required version of cmake.
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cmake_minimum_required(VERSION 2.8)
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# Initialize the project.
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project(MentOs)
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# =============================================================================
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# Set the default build type to Debug.
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if(NOT CMAKE_BUILD_TYPE)
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message(STATUS "Setting build type to 'Debug' as none was specified.")
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set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "Choose the type of build." FORCE)
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endif()
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# =============================================================================
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# Add operating system specific option.
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message(STATUS "Crosscompiling : ${CMAKE_CROSSCOMPILING}")
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message(STATUS "System name : ${CMAKE_HOST_SYSTEM_NAME}")
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message(STATUS "Kernel version : ${CMAKE_SYSTEM_VERSION}")
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if((${CMAKE_HOST_SYSTEM_NAME} STREQUAL "Darwin") OR APPLE)
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# Set the Apple MacOSx compilers.
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if(CMAKE_VERSION VERSION_LESS "3.6.0")
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include(CMakeForceCompiler)
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cmake_force_c_compiler(i386-elf-gcc Clang)
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cmake_force_cxx_compiler(i386-elf-g++ Clang)
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else()
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set(CMAKE_C_COMPILER i386-elf-gcc)
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set(CMAKE_CXX_COMPILER i386-elf-g++)
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set(CMAKE_AR i386-elf-ar)
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endif()
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# Speicfy the linker.
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set(CMAKE_LINKER i386-elf-ld)
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# Specify the linker flags.
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -nostdlib")
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elseif((${CMAKE_HOST_SYSTEM_NAME} STREQUAL "Windows") OR WIN32)
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# Windows set(EMULATOR_FLAGS ${EMULATOR_FLAGS} -sdl)
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else()
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# Generic Unix System
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find_program(LSB_RELEASE_EXEC lsb_release)
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execute_process(
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COMMAND "${LSB_RELEASE_EXEC}" --short --release
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OUTPUT_VARIABLE LSB_RELEASE_VERSION_SHORT
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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message(STATUS "LSB version : ${LSB_RELEASE_VERSION_SHORT}")
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if(${LSB_RELEASE_VERSION_SHORT} MATCHES "^18")
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# Ubuntu 18 set(EMULATOR_FLAGS ${EMULATOR_FLAGS} -sdl)
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elseif(${LSB_RELEASE_VERSION_SHORT} MATCHES "^19")
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# Ubuntu 19
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set(EMULATOR_FLAGS ${EMULATOR_FLAGS} -display gtk)
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elseif(${LSB_RELEASE_VERSION_SHORT} MATCHES "^20")
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# Ubuntu 20
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set(EMULATOR_FLAGS ${EMULATOR_FLAGS} -display gtk)
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else()
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# set(EMULATOR_FLAGS ${EMULATOR_FLAGS} -sdl)
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endif()
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endif()
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# =============================================================================
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# Add the debugging option.
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set(DEBUGGING_TYPE "DEBUG_STDIO" CACHE STRING "Chose the type of debugging: DEBUG_STDIO DEBUG_LOG")
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set_property(CACHE DEBUGGING_TYPE PROPERTY STRINGS DEBUG_STDIO DEBUG_LOG)
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if("${DEBUGGING_TYPE}" STREQUAL "DEBUG_STDIO" OR "${DEBUGGING_TYPE}" STREQUAL "DEBUG_LOG")
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message(STATUS "Setting debugging type to ${DEBUGGING_TYPE}.")
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else()
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message(FATAL_ERROR "Debugging type ${DEBUGGING_TYPE} is not valid.")
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endif()
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# =============================================================================
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# Add the sub-directories.
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add_subdirectory(programs)
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add_subdirectory(programs/tests)
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add_subdirectory(mentos)
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add_subdirectory(libc)
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add_subdirectory(doc/doxygen)
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# =============================================================================
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# Target to generate the EXT2 filesystem.
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add_custom_target(filesystem
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BYPRODUCTS ${CMAKE_BINARY_DIR}/rootfs.img
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COMMAND echo "---------------------------------------------"
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COMMAND echo "Creating EXT2 filesystem..."
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COMMAND echo "---------------------------------------------"
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COMMAND mkdir -p ${CMAKE_SOURCE_DIR}/files/proc
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COMMAND mkdir -p ${CMAKE_SOURCE_DIR}/files/dev
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COMMAND mke2fs -L 'rootfs' -N 0 -d ${CMAKE_SOURCE_DIR}/files -m 5 -r 1 -t ext2 -v -F ${CMAKE_BINARY_DIR}/rootfs.img 32M
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COMMAND echo "---------------------------------------------"
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COMMAND echo "Done!"
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COMMAND echo "---------------------------------------------"
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DEPENDS all_programs all_tests
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)
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# =============================================================================
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# Update GDB symbol file.
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add_custom_target(
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gdb_file
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BYPRODUCTS ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND bash ${CMAKE_SOURCE_DIR}/scripts/get_text_address.sh ${CMAKE_BINARY_DIR}/mentos/kernel.bin > ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND bash ${CMAKE_SOURCE_DIR}/scripts/get_text_address.sh ${CMAKE_BINARY_DIR}/mentos/kernel-bootloader.bin >> ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND bash ${CMAKE_SOURCE_DIR}/scripts/get_text_address.sh ${CMAKE_BINARY_DIR}/programs/tests/test_* >> ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND bash ${CMAKE_SOURCE_DIR}/scripts/get_text_address.sh ${CMAKE_BINARY_DIR}/programs/prog_* >> ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND echo "break boot.c: boot_main" >> ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND echo "break kernel.c: kmain" >> ${CMAKE_BINARY_DIR}/.gdbinit
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COMMAND echo "target remote localhost:1234" >> ${CMAKE_BINARY_DIR}/.gdbinit
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DEPENDS kernel-bootloader.bin
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DEPENDS all_programs
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DEPENDS all_tests
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DEPENDS libc
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)
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# =============================================================================
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# Builds the code and runs qemu with the built Os.
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set(EMULATOR qemu-system-i386)
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# Set the debug type.
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if(${DEBUGGING_TYPE} STREQUAL DEBUG_LOG)
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set(EMULATOR_FLAGS ${EMULATOR_FLAGS} -serial file:serial.log)
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elseif(${DEBUGGING_TYPE} STREQUAL DEBUG_STDIO)
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set(EMULATOR_FLAGS ${EMULATOR_FLAGS} -serial stdio)
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endif(${DEBUGGING_TYPE} STREQUAL DEBUG_LOG)
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# Set the type of video.
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set(EMULATOR_FLAGS ${EMULATOR_FLAGS} -vga std)
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# Set the amount of memory.
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set(EMULATOR_FLAGS ${EMULATOR_FLAGS} -m 1096M)
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# Set the EXT2 drive.
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set(EMULATOR_FLAGS ${EMULATOR_FLAGS} -drive file=rootfs.img,format=raw)
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# Set the kernel.
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set(EMULATOR_KERNEL -kernel mentos/kernel-bootloader.bin)
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add_custom_target(
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qemu
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COMMAND ${EMULATOR} ${EMULATOR_FLAGS} ${EMULATOR_KERNEL}
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DEPENDS kernel-bootloader.bin
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DEPENDS all_programs
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DEPENDS all_tests
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DEPENDS libc
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)
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# =============================================================================
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# Builds the code and runs qemu with the built Os.
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add_custom_target(
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qemu-gdb
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COMMAND echo "\n\n"
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COMMAND echo "Now, QEMU has loaded the kernel, and it is waiting that you\n"
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COMMAND echo "remotely connect to it. To start debugging, open a new shell\n"
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COMMAND echo "in THIS same folder, and just type :\n"
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COMMAND printf " cgdb -q -iex %q" "add-auto-load-safe-path ."
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COMMAND echo "\n\n"
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COMMAND ${EMULATOR} ${EMULATOR_FLAGS} ${EMULATOR_KERNEL} -s -S
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DEPENDS kernel-bootloader.bin
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DEPENDS all_programs
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DEPENDS all_tests
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DEPENDS libc
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DEPENDS gdb_file
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)
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