7d9297326b
If CMAKE_TOOLCHAIN_FILE is unset in seL4Config.cmake then generate one that selects the correct toolchain based on configured kernel arch settings. This means that initialising a build goes from: `cmake -DCMAKE_TOOLCHAIN_FILE=gcc.cmake -DAARCH32=ON -G Ninja -C ../configs/ARM_verified.cmake ..` to: `cmake -G Ninja -C ../configs/ARM_verified.cmake ..` gcc.cmake is modified to be used as an input to configure_file. @KernelArch@ and other @@ arguments will be replaced with the configuration settings. The file will still work if passed directly to cmake via -DCMAKE_TOOLCHAIN_FILE=gcc.cmake without being templated.
77 lines
3 KiB
CMake
77 lines
3 KiB
CMake
#
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# Copyright 2017, Data61
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# Commonwealth Scientific and Industrial Research Organisation (CSIRO)
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# ABN 41 687 119 230.
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#
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# This software may be distributed and modified according to the terms of
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# the GNU General Public License version 2. Note that NO WARRANTY is provided.
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# See "LICENSE_GPLv2.txt" for details.
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#
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# @TAG(DATA61_GPL)
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#
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cmake_minimum_required(VERSION 3.7.2)
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set(CMAKE_SYSTEM_NAME Generic)
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# For a generic system this is unused, so define it to something that will be
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# obvious if someone accidentally uses it
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set(CMAKE_SYSTEM_PROCESSOR seL4CPU)
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set(CMAKE_SYSROOT "${CMAKE_BINARY_DIR}")
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set(CMAKE_STAGING_PREFIX "${CMAKE_BINARY_DIR}/staging")
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# When this file is passed to configure_file in cmake, these variables get set to
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# the kernel platform configuration.
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set(sel4_arch @KernelSel4Arch@)
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set(arch @KernelArch@)
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set(mode @KernelWordSize@)
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if("${CROSS_COMPILER_PREFIX}" STREQUAL "")
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if(("${arch}" STREQUAL "arm") OR ("${arch}" STREQUAL "x86") OR ("${arch}" STREQUAL "riscv"))
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if(${sel4_arch} STREQUAL "aarch32" OR ${sel4_arch} STREQUAL "arm_hyp")
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set(CROSS_COMPILER_PREFIX "arm-linux-gnueabi-" CACHE INTERNAL "")
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elseif(${sel4_arch} STREQUAL "aarch64")
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set(CROSS_COMPILER_PREFIX "aarch64-linux-gnu-" CACHE INTERNAL "")
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elseif(${arch} STREQUAL "riscv")
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set(CROSS_COMPILER_PREFIX "riscv64-unknown-linux-gnu-" CACHE INTERNAL "")
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endif()
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else()
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# For backwards compatibility reasons we allow this file to work without templating.
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# If initialised with -DCMAKE_TOOLCHAIN_FILE="$SCRIPT_PATH/gcc.cmake" this script
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# understood the following arguments: ARM, AARCH32, AARCH32HF, AARCH64, RISCV32, RISCV64, APPLE
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if(AARCH32 OR ARM)
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set(CROSS_COMPILER_PREFIX "arm-linux-gnueabi-" CACHE INTERNAL "")
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if(ARM)
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message("ARM flag is deprecated, please use AARCH32")
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endif()
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elseif(AARCH64)
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set(CROSS_COMPILER_PREFIX "aarch64-linux-gnu-" CACHE INTERNAL "")
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elseif(RISCV32 OR RISCV64)
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set(CROSS_COMPILER_PREFIX "riscv64-unknown-linux-gnu-" CACHE INTERNAL "")
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endif()
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endif()
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if(AARCH32HF)
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set(CROSS_COMPILER_PREFIX "arm-linux-gnueabihf-" CACHE INTERNAL "")
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endif()
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if("${CROSS_COMPILER_PREFIX}" STREQUAL "")
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# If we haven't set a target above we assume x86_64/ia32 target
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if(APPLE)
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# APPLE is a CMake variable that evaluates to True on a Mac OSX system
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set(CROSS_COMPILER_PREFIX "x86_64-unknown-linux-gnu-" CACHE INTERNAL "")
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endif()
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endif()
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endif()
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set(CMAKE_C_COMPILER ${CROSS_COMPILER_PREFIX}gcc)
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set(CMAKE_ASM_COMPILER ${CROSS_COMPILER_PREFIX}gcc)
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set(CMAKE_CXX_COMPILER ${CROSS_COMPILER_PREFIX}g++)
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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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set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
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mark_as_advanced(FORCE CMAKE_TOOLCHAIN_FILE)
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