76c4591e6b
GDB can be built with or without Python support. When built with Python support this can cause a particular problem: The gdb executable relies on shared libraries that are bound to a specific Python version. But since most Linux distributions typically ship with a single version, it is very difficult to choose which one to target when building GDB. When GDB executes, if it fails to load the shared libraries it will exit immediately with an error code of 127 and output resembling this: /home/carles/bin/zephyr-sdk/arm-zephyr-eabi/bin/arm-zephyr-eabi-gdb: error while loading shared libraries: libpython3.8.so.1.0: cannot open shared object file: No such file or directory There are two known approaches to shipping multiple gdb executables: - The Zephyr SDK ships a default gdb with Python enabled, and then a separate gdb-no-py executable with Python disabled - GNU Arm Embedded ships with a default gdb with Python disabled, and an additional gdb-py with Python enabled To mitigate the problem of not being able to debug, fall back to a 'gdb-no-py' if it exists whenever the standard gdb executable fails to even run. Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
36 lines
1.6 KiB
CMake
36 lines
1.6 KiB
CMake
# SPDX-License-Identifier: Apache-2.0
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# Configures binary tools as GNU binutils
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find_program(CMAKE_OBJCOPY ${CROSS_COMPILE}objcopy PATHS ${TOOLCHAIN_HOME} NO_DEFAULT_PATH)
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find_program(CMAKE_OBJDUMP ${CROSS_COMPILE}objdump PATHS ${TOOLCHAIN_HOME} NO_DEFAULT_PATH)
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find_program(CMAKE_AS ${CROSS_COMPILE}as PATHS ${TOOLCHAIN_HOME} NO_DEFAULT_PATH)
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find_program(CMAKE_AR ${CROSS_COMPILE}ar PATHS ${TOOLCHAIN_HOME} NO_DEFAULT_PATH)
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find_program(CMAKE_RANLIB ${CROSS_COMPILE}ranlib PATHS ${TOOLCHAIN_HOME} NO_DEFAULT_PATH)
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find_program(CMAKE_READELF ${CROSS_COMPILE}readelf PATHS ${TOOLCHAIN_HOME} NO_DEFAULT_PATH)
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find_program(CMAKE_NM ${CROSS_COMPILE}nm PATHS ${TOOLCHAIN_HOME} NO_DEFAULT_PATH)
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find_program(CMAKE_STRIP ${CROSS_COMPILE}strip PATHS ${TOOLCHAIN_HOME} NO_DEFAULT_PATH)
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find_program(CMAKE_GDB ${CROSS_COMPILE}gdb PATHS ${TOOLCHAIN_HOME} NO_DEFAULT_PATH)
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if(CMAKE_GDB)
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execute_process(
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COMMAND ${CMAKE_GDB} --configuration
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OUTPUT_VARIABLE GDB_PY_NO_PY
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OUTPUT_STRIP_TRAILING_WHITESPACE
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RESULTS_VARIABLE GDB_CFG_ERR
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)
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if (${GDB_CFG_ERR})
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# Failed to execute GDB, likely because of Python deps
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find_program(CMAKE_GDB_NO_PY ${CROSS_COMPILE}gdb-no-py PATHS ${TOOLCHAIN_HOME} NO_DEFAULT_PATH)
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if (CMAKE_GDB_NO_PY)
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set(CMAKE_GDB ${CMAKE_GDB_NO_PY} CACHE FILEPATH "Path to a program." FORCE)
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endif()
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endif()
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endif()
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find_program(CMAKE_GDB gdb-multiarch PATHS ${TOOLCHAIN_HOME} )
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# Include bin tool properties
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include(${ZEPHYR_BASE}/cmake/bintools/gnu/target_bintools.cmake)
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