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49 lines
2.4 KiB
CMake
49 lines
2.4 KiB
CMake
# Copyright (C) 2021,2022 fef <owo@fef.moe>. All rights reserved.
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set(TOOLCHAIN_PATH "/usr/bin" CACHE STRING "Toolchain directory")
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set(CMAKE_SYSTEM_NAME Generic)
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set(CMAKE_CROSSCOMPILING 1)
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set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
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if (CFG_X86_64)
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set(CMAKE_SYSTEM_PROCESSOR x86-64)
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set(_toolchain_common_flags "-m64 -march=${M_ARCH}")
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set(_toolchain_triple x86_64-pc-none-elf)
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set(_toolchain_bits 64)
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else()
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set(CMAKE_SYSTEM_PROCESSOR i686)
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set(_toolchain_common_flags "-m32 -march=i686")
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set(_toolchain_triple i686-pc-none-elf)
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set(_toolchain_bits 32)
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endif()
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set(CMAKE_AR ${TOOLCHAIN_PATH}/${CMAKE_EXECUTABLE_PREFIX}ar${CMAKE_EXECUTABLE_SUFFIX})
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set(CMAKE_ASM_COMPILER ${TOOLCHAIN_PATH}/${CMAKE_EXECUTABLE_PREFIX}clang${CMAKE_EXECUTABLE_SUFFIX})
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set(CMAKE_C_COMPILER ${TOOLCHAIN_PATH}/${CMAKE_EXECUTABLE_PREFIX}clang${CMAKE_EXECUTABLE_SUFFIX})
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set(CMAKE_LINKER ${TOOLCHAIN_PATH}/${CMAKE_EXECUTABLE_PREFIX}ld.lld${CMAKE_EXECUTABLE_SUFFIX})
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set(CMAKE_OBJCOPY ${TOOLCHAIN_PATH}/${CMAKE_EXECUTABLE_PREFIX}objcopy${CMAKE_EXECUTABLE_SUFFIX} CACHE INTERNAL "")
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set(CMAKE_RANLIB ${TOOLCHAIN_PATH}/${CMAKE_EXECUTABLE_PREFIX}ranlib${CMAKE_EXECUTABLE_SUFFIX} CACHE INTERNAL "")
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set(CMAKE_SZE ${TOOLCHAIN_PATH}/${CMAKE_EXECUTABLE_PREFIX}szr${CMAKE_EXECUTABLE_SUFFIX} CACHE INTERNAL "")
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set(CMAKE_STRIP ${TOOLCHAIN_PATH}/${CMAKE_EXECUTABLE_PREFIX}strip${CMAKE_EXECUTABLE_SUFFIX} CACHE INTERNAL "")
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# XXX ktrace_print() currently relies on -fno-omit-frame-pointer
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_toolchain_common_flags} -mcmodel=kernel -mno-red-zone -mno-mmx -mno-sse -msoft-float -fno-omit-frame-pointer")
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set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} ${_toolchain_common_flags}")
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set(CMAKE_C_COMPILER_TARGET ${_toolchain_triple})
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set(CMAKE_ASM_COMPILER_TARGET ${_toolchain_triple})
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set(CMAKE_EXE_LINKER_FLAGS_INIT "-fuse-ld=lld")
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set(CMAKE_MODULE_LINKER_FLAGS_INIT "-fuse-ld=lld")
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set(CMAKE_SHARED_LINKER_FLAGS_INIT "-fuse-ld=lld")
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configure_file(
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"${CMAKE_CURRENT_LIST_DIR}/kernel_config.ld.in"
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"${CMAKE_BINARY_DIR}/config/kernel_config.ld"
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)
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -T${CMAKE_BINARY_DIR}/config/kernel_config.ld -T${CMAKE_CURRENT_LIST_DIR}/kernel${_toolchain_bits}.ld")
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set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
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set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
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set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
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set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
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