mirror of
https://gitee.com/xiaohuolufeihua/bizhang_-obav.git
synced 2026-05-21 09:22:18 +00:00
fa614a3cc1
The reason for this change is that RPi2 and RPi3 are compatible, and hopefully all differences coming up can be resolved without ifdefs but at runtime.
90 lines
2.2 KiB
CMake
90 lines
2.2 KiB
CMake
# 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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foreach(tool echo grep rm mkdir nm 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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add_definitions(
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-D __RPI
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)
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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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