diff options
Diffstat (limited to 'cmake')
| -rw-r--r-- | cmake/Modules/ElfTransformations.cmake | 36 | ||||
| -rw-r--r-- | cmake/Modules/GenerateBootableIso.cmake | 22 | ||||
| -rw-r--r-- | cmake/Platforms/x86_64.cmake | 62 |
3 files changed, 92 insertions, 28 deletions
diff --git a/cmake/Modules/ElfTransformations.cmake b/cmake/Modules/ElfTransformations.cmake new file mode 100644 index 0000000..dfc8576 --- /dev/null +++ b/cmake/Modules/ElfTransformations.cmake @@ -0,0 +1,36 @@ +include_guard(GLOBAL) + +function(target_extract_debug_symbols TARGET) + add_custom_command(TARGET "${TARGET}" + POST_BUILD + COMMAND "${CMAKE_OBJCOPY}" + "--only-keep-debug" + "$<TARGET_FILE:${TARGET}>" + "$<TARGET_FILE_DIR:${TARGET}>/$<TARGET_FILE_BASE_NAME:${TARGET}>.sym" + BYPRODUCTS "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/$<CONFIGURATION>/${TARGET}.sym" + COMMENT "Extracting debug symbols from $<TARGET_FILE:${TARGET}> ..." + ) +endfunction() + +function(target_strip TARGET) + add_custom_command(TARGET "${TARGET}" + POST_BUILD + COMMAND "${CMAKE_STRIP}" + "$<TARGET_FILE:${TARGET}>" + COMMENT "Stripping $<TARGET_FILE:${TARGET}> ..." + ) +endfunction() + +function(target_disassemble TARGET) + add_custom_command(TARGET "${TARGET}" + POST_BUILD + COMMAND "${CMAKE_OBJDUMP}" + "--disassemble" + "--visualize-jumps" + "--demangle" + "$<TARGET_FILE:${TARGET}>" + ">$<TARGET_FILE_DIR:${TARGET}>/$<TARGET_FILE_BASE_NAME:${TARGET}>.dis" + BYPRODUCTS "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/$<CONFIGURATION>/${TARGET}.dis" + COMMENT "Dumping disassembly for $<TARGET_FILE:${TARGET}> ..." + ) +endfunction() diff --git a/cmake/Modules/GenerateBootableIso.cmake b/cmake/Modules/GenerateBootableIso.cmake new file mode 100644 index 0000000..3d1ee30 --- /dev/null +++ b/cmake/Modules/GenerateBootableIso.cmake @@ -0,0 +1,22 @@ +include_guard(GLOBAL) + +function(target_generate_bootable_iso TARGET) + find_package("grub-mkrescue") + + file(GENERATE + OUTPUT "$<TARGET_FILE_DIR:${TARGET}>/isofs/boot/grub/grub.cfg" + INPUT "${PROJECT_SOURCE_DIR}/arch/${CMAKE_SYSTEM_PROCESSOR}/support/grub.cfg.in" + ) + + add_custom_command(TARGET "${TARGET}" + POST_BUILD + COMMAND "${GRUB_MKRESCUE_EXE}" + "-o" + "$<TARGET_FILE_DIR:${TARGET}>/${TARGET}.iso" + "$<TARGET_FILE_DIR:${TARGET}>/isofs" + "$<TARGET_FILE:${TARGET}>" + "2>/dev/null" + BYPRODUCTS "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/$<CONFIGURATION>/${TARGET}.iso" + COMMENT "Creating bootable ISO image" + ) +endfunction() diff --git a/cmake/Platforms/x86_64.cmake b/cmake/Platforms/x86_64.cmake index e0518b5..b17fec8 100644 --- a/cmake/Platforms/x86_64.cmake +++ b/cmake/Platforms/x86_64.cmake @@ -1,35 +1,41 @@ -execute_process(COMMAND "x86_64-pc-elf-g++" "-mno-red-zone" "-print-file-name=crtbegin.o" - OUTPUT_VARIABLE CRT_BEGIN - ERROR_QUIET -) -string(STRIP "${CRT_BEGIN}" CRT_BEGIN) -mark_as_advanced(CRT_BEGIN) - -string(REGEX REPLACE "/crtbegin.o" "" CMAKE_SYSROOT "${CRT_BEGIN}") -mark_as_advanced(CMAKE_SYSROOT) +include_guard(GLOBAL) -set(SYSTEM_NAME "Generic") +set(PLATFORM_TARGET "x86_64-pc-elf") set(CMAKE_TRY_COMPILE_TARGET_TYPE "STATIC_LIBRARY") -set(CMAKE_C_COMPILER "x86_64-pc-elf-gcc") -set(CMAKE_CXX_COMPILER "x86_64-pc-elf-g++") +set(CMAKE_SYSTEM_NAME "Generic-ELF") +set(CMAKE_SYSTEM_PROCESSOR "x86_64") + +set(CMAKE_ASM_COMPILER_TARGET "${PLATFORM_TARGET}") +set(CMAKE_CXX_COMPILER_TARGET "${PLATFORM_TARGET}") + +find_program(CMAKE_ASM_COMPILER "${CMAKE_ASM_COMPILER_TARGET}-g++" REQUIRED) +find_program(CMAKE_CXX_COMPILER "${CMAKE_CXX_COMPILER_TARGET}-g++" REQUIRED) + +set(CMAKE_CXX_FLAGS_INIT + "-mno-red-zone" + "-mcmodel=kernel" + "-fno-pie" + "-fno-rtti" + "-fno-exceptions" + "-fno-use-cxa-atexit" + "-ffunction-sections" + "-fdata-sections" +) + +list(JOIN CMAKE_CXX_FLAGS_INIT " " CMAKE_CXX_FLAGS_INIT) + +set(CMAKE_EXE_LINKER_FLAGS_INIT "-Wl,--gc-sections") -set(CMAKE_CXX_FLAGS_INIT "-m64 -mno-red-zone -mcmodel=large -fno-rtti -fno-exceptions -ffunction-sections -fdata-sections") set(CMAKE_CXX_FLAGS_DEBUG "-ggdb3") set(CMAKE_ASM_FLAGS_DEBUG "-ggdb3") -set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-ggdb3") -set(CMAKE_ASM_FLAGS_RELWITHDEBINFO "-ggdb3") -set(CMAKE_EXE_LINKER_FLAGS_INIT "-nostartfiles -Wl,--gc-sections") -set(CMAKE_CXX_LINK_EXECUTABLE - "<CMAKE_CXX_COMPILER> \ - <FLAGS> \ - <CMAKE_CXX_LINK_FLAGS> \ - <LINK_FLAGS> \ - ${CMAKE_SYSROOT}/crtbegin.o \ - <OBJECTS> \ - -o <TARGET> \ - <LINK_LIBRARIES> \ - -lgcc \ - ${CMAKE_SYSROOT}/crtend.o" -) + +set(CMAKE_ASM_FLAGS_MINSIZEREL "-Os -DNDEBUG -ggdb3") +set(CMAKE_CXX_FLAGS_MINSIZEREL "-Os -DNDEBUG -ggdb3") + +set(CMAKE_ASM_FLAGS_RELEASE "-O3 -DNDEBUG -ggdb3") +set(CMAKE_CXX_FLAGS_RELEASE "-O3 -DNDEBUG -ggdb3") + +set(CMAKE_ASM_FLAGS_RELWITHDEBINFO "-O2 -DNDEBUG -ggdb3") +set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O2 -DNDEBUG -ggdb3") |