2016-04-29 01:09:23 -03:00
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# 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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# 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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if ("$ENV{RPI_TOOLCHAIN_DIR}" STREQUAL "")
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message(FATAL_ERROR "RPI_TOOLCHAIN_DIR not set")
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else()
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set(RPI_TOOLCHAIN_DIR $ENV{RPI_TOOLCHAIN_DIR})
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endif()
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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-linux-gnueabihf-gcc
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PATHS ${RPI_TOOLCHAIN_DIR}/gcc-linaro-arm-linux-gnueabihf-raspbian/bin
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NO_DEFAULT_PATH
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)
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if(NOT C_COMPILER)
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message(FATAL_ERROR "could not find arm-linux-gnueabihf-gcc compiler")
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endif()
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cmake_force_c_compiler(${C_COMPILER} GNU)
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find_program(CXX_COMPILER arm-linux-gnueabihf-g++
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PATHS ${RPI_TOOLCHAIN_DIR}/gcc-linaro-arm-linux-gnueabihf-raspbian/bin
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NO_DEFAULT_PATH
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)
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if(NOT CXX_COMPILER)
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message(FATAL_ERROR "could not find arm-linux-gnueabihf-g++ compiler")
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endif()
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cmake_force_cxx_compiler(${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-linux-gnueabihf-${tool}
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PATHS ${RPI_TOOLCHAIN_DIR}/gcc-linaro-arm-linux-gnueabihf-raspbian/bin
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NO_DEFAULT_PATH
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)
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if(NOT ${TOOL})
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message(FATAL_ERROR "could not find arm-linux-gnueabihf-${tool}")
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endif()
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endforeach()
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# os tools
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2016-06-05 07:02:13 -03:00
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foreach(tool echo grep rm mkdir nm cp touch make unzip)
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2016-04-29 01:09:23 -03:00
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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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2016-04-29 12:33:31 -03:00
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add_definitions(
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2016-07-14 12:34:41 -03:00
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-D __RPI
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2016-04-29 12:33:31 -03:00
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)
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2016-04-29 01:09:23 -03:00
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set(LINKER_FLAGS "-Wl,-gc-sections")
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set(CMAKE_EXE_LINKER_FLAGS ${LINKER_FLAGS})
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set(CMAKE_C_FLAGS ${C_FLAGS})
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set(CMAKE_CXX_LINKER_FLAGS ${C_FLAGS})
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# where is the target environment
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set(CMAKE_FIND_ROOT_PATH get_file_component(${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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