109 lines
4.4 KiB
CMake
109 lines
4.4 KiB
CMake
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if(NOT TOOLCHAIN_PATH)
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if(DEFINED ENV{TOOLCHAIN_PATH})
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message(STATUS "Detected toolchain path TOOLCHAIN_PATH in environmental variables: " $ENV{TOOLCHAIN_PATH})
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set(TOOLCHAIN_PATH $ENV{TOOLCHAIN_PATH})
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else()
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if(NOT CMAKE_C_COMPILER)
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set(TOOLCHAIN_PATH "/usr")
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message(STATUS "No TOOLCHAIN_PATH specified, using default: " ${TOOLCHAIN_PATH})
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else()
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# keep only directory of compiler
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get_filename_component(TOOLCHAIN_PATH ${CMAKE_C_COMPILER} DIRECTORY)
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# remove the last /bin directory
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get_filename_component(TOOLCHAIN_PATH ${TOOLCHAIN_PATH} DIRECTORY)
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endif()
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endif()
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file(TO_CMAKE_PATH "${TOOLCHAIN_PATH}" TOOLCHAIN_PATH)
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endif()
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if(NOT TARGET_TRIPLET)
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set(TARGET_TRIPLET "arm-none-eabi")
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message(STATUS "No TARGET_TRIPLET specified, using default: " ${TARGET_TRIPLET})
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endif()
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set(CMAKE_SYSTEM_NAME Generic)
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set(TOOLCHAIN_SYSROOT "${TOOLCHAIN_PATH}/${TARGET_TRIPLET}")
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set(TOOLCHAIN_BIN_PATH "${TOOLCHAIN_PATH}/bin")
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set(TOOLCHAIN_INC_PATH "${TOOLCHAIN_PATH}/${TARGET_TRIPLET}/include")
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set(TOOLCHAIN_LIB_PATH "${TOOLCHAIN_PATH}/${TARGET_TRIPLET}/lib")
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find_program(CMAKE_OBJCOPY NAMES ${TARGET_TRIPLET}-objcopy HINTS ${TOOLCHAIN_BIN_PATH})
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find_program(CMAKE_OBJDUMP NAMES ${TARGET_TRIPLET}-objdump HINTS ${TOOLCHAIN_BIN_PATH})
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find_program(CMAKE_SIZE NAMES ${TARGET_TRIPLET}-size HINTS ${TOOLCHAIN_BIN_PATH})
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function(print_size_of_target TARGET)
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add_custom_target(${TARGET}_always_display_size
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ALL COMMAND ${CMAKE_SIZE} "$<TARGET_FILE:${TARGET}>"
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COMMENT "Target Sizes: "
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DEPENDS ${TARGET}
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)
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endfunction()
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function(_generate_file TARGET VERSION CURRENT_DATE OPT1 OPT2 OUTPUT_EXTENSION OBJCOPY_BFD_OUTPUT)
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get_target_property(TARGET_OUTPUT_NAME ${TARGET} OUTPUT_NAME)
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if (TARGET_OUTPUT_NAME)
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set(OUTPUT_FILE_NAME "${TARGET_OUTPUT_NAME}_${VERSION}_${CURRENT_DATE}${OPT1}${OPT2}.${OUTPUT_EXTENSION}")
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else()
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set(OUTPUT_FILE_NAME "${TARGET}_${VERSION}_${CURRENT_DATE}${OPT1}${OPT2}.${OUTPUT_EXTENSION}")
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endif()
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get_target_property(RUNTIME_OUTPUT_DIRECTORY ${TARGET} RUNTIME_OUTPUT_DIRECTORY)
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if(RUNTIME_OUTPUT_DIRECTORY)
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set(OUTPUT_FILE_PATH "${RUNTIME_OUTPUT_DIRECTORY}/${OUTPUT_FILE_NAME}")
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else()
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set(OUTPUT_FILE_PATH "${OUTPUT_FILE_NAME}")
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endif()
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add_custom_command(
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TARGET ${TARGET}
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POST_BUILD
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COMMAND ${CMAKE_OBJCOPY} -O ${OBJCOPY_BFD_OUTPUT} "$<TARGET_FILE:${TARGET}>" ${OUTPUT_FILE_PATH}
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BYPRODUCTS ${OUTPUT_FILE_PATH}
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COMMENT "Generating ${OBJCOPY_BFD_OUTPUT} file ${OUTPUT_FILE_NAME}"
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)
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endfunction()
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function(generate_binary_file TARGET)
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_generate_file(${TARGET} "${VERSION}" "${CURRENT_DATE}" "${OPT1}" "${OPT2}" "bin" "binary")
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endfunction()
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function(generate_hex_file TARGET)
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_generate_file(${TARGET} "${VERSION}" "${CURRENT_DATE}" "${OPT1}" "${OPT2}" "hex" "ihex")
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endfunction()
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set(CMAKE_EXECUTABLE_SUFFIX_C .elf)
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set(CMAKE_EXECUTABLE_SUFFIX_CXX .elf)
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set(CMAKE_EXECUTABLE_SUFFIX_ASM .elf)
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# This should be safe to set for a bare-metal cross-compiler
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set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
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# Extra CFlags
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set(TARGET_CFLAGS_EXTRA "-Wall -fdata-sections -ffunction-sections -fno-common -fmessage-length=0")
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set(TARGET_CXXFLAGS_EXTRA "-Wall -fdata-sections -ffunction-sections -fno-common -fmessage-length=0")
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set(TARGET_LDFLAGS_EXTRA "-Wl,--print-memory-usage")
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# Device specific settings, goes to CFLAGS and LDFLAGS
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set(TARGET_CFLAGS_HARDWARE "-mcpu=cortex-m23 -mfloat-abi=soft -mthumb -mthumb-interwork")
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# Conditional flags
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# DEBUG
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set(CMAKE_C_FLAGS_DEBUG "-DDEBUG=0 -O0 -g")
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set(CMAKE_CXX_FLAGS_DEBUG "-DDEBUG=0 -O0 -g")
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set(CMAKE_ASM_FLAGS_DEBUG "-DDEBUG=0 -O0 -g")
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# RELEASE
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set(CMAKE_C_FLAGS_RELEASE "-DNDEBUG -O3") # -flto
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set(CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG -O3") # -flto
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set(CMAKE_ASM_FLAGS_RELEASE "-DNDEBUG -O3") # -flto
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#set(CMAKE_EXE_LINKER_FLAGS_RELEASE "-flto")
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# Final compiler flags
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${TARGET_CFLAGS_HARDWARE} ${TARGET_CFLAGS_EXTRA}")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${TARGET_CFLAGS_HARDWARE} ${TARGET_CXXFLAGS_EXTRA}")
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set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} ${CMAKE_C_FLAGS} -x assembler-with-cpp")
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set(CMAKE_EXE_LINKER_FLAGS "--specs=nano.specs --specs=nosys.specs -Wall -Wextra -Wl,--gc-sections ${TARGET_LDFLAGS_EXTRA}")
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# -fsigned-char maybe |