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https://gitee.com/xiaohuolufeihua/bizhang_-obav.git
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463217a5f9
* Cygwin: repaired NuttX build after 1f63d85869
all the NuttX specific WINTOOL define handling was skiped in cmake Make.defs generation
The Nuttx build is makfile based and needs its cygwin treatment
Additionally the ${PX4_SOURCE_DIR}/src/include which was added through cmake needs path conversion
The two root causes for the special handling are:
- ARM GCC for Windows doesn't support cygwin paths passed as an argument
so they need to be either relative or converted via cypath tool
- Symbolic links are totally different under Windows and because NuttX uses them extensively
it has special handling scripts that need to be fed with the correct defines
* Cygwin: NuttX include paths all converted in Make.defs.in
differentiate between WINTOOL define (MSYS & cygwin) and cygwin using uname command:
- MSYS needs symbolic link handling for ARM GCC but no path conversion
- Cygwin needs both
102 lines
2.9 KiB
CMake
102 lines
2.9 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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# 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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