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101 lines
2.9 KiB
101 lines
2.9 KiB
# defines: |
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# |
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# NM |
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# OBJCOPY |
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# LD |
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# CXX_COMPILER |
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# C_COMPILER |
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# CMAKE_SYSTEM_NAME |
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# CMAKE_SYSTEM_VERSION |
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# GENROMFS |
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# LINKER_FLAGS |
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# CMAKE_EXE_LINKER_FLAGS |
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# CMAKE_FIND_ROOT_PATH |
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# CMAKE_FIND_ROOT_PATH_MODE_PROGRAM |
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# CMAKE_FIND_ROOT_PATH_MODE_LIBRARY |
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# CMAKE_FIND_ROOT_PATH_MODE_INCLUDE |
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include(CMakeForceCompiler) |
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# this one is important |
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set(CMAKE_SYSTEM_NAME Generic) |
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#this one not so much |
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set(CMAKE_SYSTEM_VERSION 1) |
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# specify the cross compiler |
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find_program(C_COMPILER arm-none-eabi-gcc) |
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if(NOT C_COMPILER) |
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message(FATAL_ERROR "could not find arm-none-eabi-gcc compiler") |
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endif() |
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cmake_force_c_compiler(${C_COMPILER} GNU) |
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find_program(CXX_COMPILER arm-none-eabi-g++) |
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if(NOT CXX_COMPILER) |
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message(FATAL_ERROR "could not find arm-none-eabi-g++ compiler") |
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endif() |
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cmake_force_cxx_compiler(${CXX_COMPILER} GNU) |
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# compiler tools |
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foreach(tool objcopy nm ld) |
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string(TOUPPER ${tool} TOOL) |
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find_program(${TOOL} arm-none-eabi-${tool}) |
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if(NOT ${TOOL}) |
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message(FATAL_ERROR "could not find ${tool}") |
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endif() |
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endforeach() |
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# optional compiler tools |
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foreach(tool gdb gdbtui) |
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string(TOUPPER ${tool} TOOL) |
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find_program(${TOOL} arm-none-eabi-${tool}) |
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if(NOT ${TOOL}) |
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#message(STATUS "could not find ${tool}") |
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endif() |
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endforeach() |
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# os tools |
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foreach(tool echo patch grep rm mkdir nm genromfs cp touch make unzip) |
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string(TOUPPER ${tool} TOOL) |
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find_program(${TOOL} ${tool}) |
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if(NOT ${TOOL}) |
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message(FATAL_ERROR "could not find ${tool}") |
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endif() |
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endforeach() |
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# optional os tools |
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foreach(tool ddd) |
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string(TOUPPER ${tool} TOOL) |
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find_program(${TOOL} ${tool}) |
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if(NOT ${TOOL}) |
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#message(STATUS "could not find ${tool}") |
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endif() |
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endforeach() |
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set(cpu_flags) |
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if (CMAKE_SYSTEM_PROCESSOR STREQUAL "cortex-m7") |
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set(cpu_flags "-mcpu=cortex-m7 -mthumb -mfpu=fpv5-sp-d16 -mfloat-abi=hard") |
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elseif (CMAKE_SYSTEM_PROCESSOR STREQUAL "cortex-m4") |
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set(cpu_flags "-mcpu=cortex-m4 -mthumb -march=armv7e-m -mfpu=fpv4-sp-d16 -mfloat-abi=hard") |
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elseif (CMAKE_SYSTEM_PROCESSOR STREQUAL "cortex-m3") |
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set(cpu_flags "-mcpu=cortex-m3 -mthumb -march=armv7-m") |
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else () |
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message(FATAL_ERROR "Processor not recognised in toolchain file") |
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endif() |
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set(c_flags "-fno-common -ffunction-sections -fdata-sections") |
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set(cxx_flags "-fno-common -ffunction-sections -fdata-sections") |
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set(CMAKE_C_FLAGS "${c_flags} ${cpu_flags}" CACHE INTERNAL "" FORCE) |
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set(CMAKE_CXX_FLAGS "${cxx_flags} ${cpu_flags}" CACHE INTERNAL "" FORCE) |
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set(CMAKE_ASM_FLAGS "${cpu_flags} -D__ASSEMBLY__ " CACHE INTERNAL "" FORCE) |
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set(CMAKE_EXE_LINKER_FLAGS "${cpu_flags} -nodefaultlibs -nostdlib -Wl,--warn-common,--gc-sections" CACHE INTERNAL "" FORCE) |
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# where is the target environment |
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set(CMAKE_FIND_ROOT_PATH get_file_component(${C_COMPILER} PATH)) |
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# search for programs in the build host directories |
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set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER) |
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# for libraries and headers in the target directories |
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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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