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49 lines
2.5 KiB
49 lines
2.5 KiB
# Uniquely identify the toolchain wrt. its capabilities. |
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# |
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# What we are looking for, is a signature definition that is defined |
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# like this: |
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# * The MD5 sum of the compiler itself. A MD5 checksum is taken of the content |
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# after symlinks are resolved. This ensure that if the content changes, then |
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# the MD5 will also change (as example toolchain upgrade in same folder) |
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# * The CMAKE_C_COMPILER itself. This may be a symlink, but it ensures that |
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# multiple symlinks pointing to same executable will generate different |
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# signatures, as example: clang, gcc, arm-zephyr-eabi-gcc, links pointing to |
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# ccache will generate unique signatures |
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# * CMAKE_C_COMPILER_ID is taking the CMake compiler id for extra signature. |
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# * CMAKE_C_COMPILER_VERSION will ensure that even when using the previous |
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# methods, where an upgraded compiler could have same signature due to ccache |
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# usage and symbolic links, then the upgraded compiler will have new version |
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# and thus generate a new signature. |
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# |
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# Toolchains with the same signature will always support the same set of flags. |
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# |
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file(MD5 ${CMAKE_C_COMPILER} CMAKE_C_COMPILER_MD5_SUM) |
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set(TOOLCHAIN_SIGNATURE ${CMAKE_C_COMPILER_MD5_SUM}) |
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# Extend the CMAKE_C_COMPILER_MD5_SUM with the compiler signature. |
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string(MD5 COMPILER_SIGNATURE ${CMAKE_C_COMPILER}_${CMAKE_C_COMPILER_ID}_${CMAKE_C_COMPILER_VERSION}) |
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set(TOOLCHAIN_SIGNATURE ${TOOLCHAIN_SIGNATURE}_${COMPILER_SIGNATURE}) |
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# Load the compile features file which will provide compile features lists for |
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# various C / CXX language dialects that can then be exported based on current |
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# Zephyr Kconfig settings or the CSTD global property. |
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include(${CMAKE_CURRENT_LIST_DIR}/compiler/compiler_features.cmake) |
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# Loading of templates are strictly not needed as they do not set any |
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# properties. |
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# They purely provide an overview as well as a starting point for supporting |
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# a new toolchain. |
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include(${CMAKE_CURRENT_LIST_DIR}/compiler/compiler_flags_template.cmake) |
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include(${CMAKE_CURRENT_LIST_DIR}/linker/linker_flags_template.cmake) |
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include(${CMAKE_CURRENT_LIST_DIR}/linker/linker_libraries_template.cmake) |
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# Configure the toolchain flags based on what toolchain technology is used |
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# (gcc, host-gcc etc.) |
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include(${TOOLCHAIN_ROOT}/cmake/compiler/${COMPILER}/compiler_flags.cmake OPTIONAL) |
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include(${TOOLCHAIN_ROOT}/cmake/linker/${LINKER}/linker_flags.cmake OPTIONAL) |
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if(CONFIG_NATIVE_LIBRARY) |
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include(${TOOLCHAIN_ROOT}/cmake/linker/linker_libraries_native.cmake) |
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else() |
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include(${TOOLCHAIN_ROOT}/cmake/linker/${LINKER}/linker_libraries.cmake OPTIONAL) |
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endif()
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