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AM62P: TI CLANG TOOLCHAIN

Wei Han Chan
Prodigy 50 points
Part Number: AM62P

Tool/software:

I'm working with an SDK example and have organized the code into three libraries: one for FreeRTOS, one for the example's application-specific code, and one for the board support package (BSP) drivers. During the linking process, I'm encountering this warning:

warning: cannot resolve archive
/data/cm_test/ssp_hal/implementations/host/am62p/tools/TI-Clang_toolchain/ti-cgt-armllvm_4.0.1.LTS/lib/libc.a to a compatible library, as no input files have been encountered

The linker command I'm using is:

/tools/TI_Clang_toolchain/ti-cgt-armllvm_4.0.1.LTS/bin/tiarmlnk" -I/data/cm_test/ssp_hal/implementations/host/am62p/tools/TI_Clang_toolchain/ti-cgt-armllvm_4.0.1.LTS/lib -o /data/cm_test/cm_test/projects_output_folder/Common_Modem_AM62P_OUT/Common_Modem_AM62P.out --diag_suppress=10063 --priority --ram_model --reread_libs -m=/data/cm_test/cm_test/projects_output_folder/Common_Modem_AM62P_OUT/Common_Modem_AM62P.map /data/cm_test/cm_test/lib/ssp_hal/AM62P/build/Common_Modem_AM62P_build/AM62P.lib /data/cm_test/cm_test/lib/ssp_openrtos/build/Common_Modem_AM62P_build/ssp_openrtos.lib /data/cm_test/cm_test/sources/Target_Specific/AM62P/build/Common_Modem_AM62P_build/AM62P.lib -l/data/cm_test/ssp_hal/implementations/host/am62p/tools/TI_Clang_toolchain/ti-cgt-armllvm_4.0.1.LTS/lib/libc.a -l/data/cm_test/ssp_hal/implementations/host/am62p/tools/TI_Clang_toolchain/ti-cgt-armllvm_4.0.1.LTS/lib/libsysbm.a /data/cm_test/cm_test/sources/Target_Specific/AM62P/Linker_config/linker.cmd --start-group -llibc++.a -llibc++abi.a -llibc.a -llibsys.a -llibsysbm.a -llibclang_rt.builtins.a -llibclang_rt.profile.a --end-group

Is it possible to link these libraries directly to create the binary, without providing the individual object files?

  • 0
    TI__Guru**** 463941 points

    Hello,

    I have brought this thread to the attention of the compiler experts. Please note that due to the local holiday responses may be delayed.

    Thanks

    ki

  • 0
    TI__Guru**** 249420 points

    Please add this option near the beginning of the tiarmclang command ...

    -Wl,--undef_sym=main

    While I'm confident enough to make this suggestion, please understand that I cannot test it in your project.

    To understand why it works, please see this entry about --undef_sym from the tiarmclang online manual.

    Thanks and regards,

    -George

  • 0 in reply to George Mock
    Prodigy 50 points

    Hi George,My project is structured such that the driver code, the FreeRTOS kernel, and the main application code are each compiled and packaged into their own separate libraries. So, the linking process involves combining these three pre-existing libraries, rather than individual object files.

    While -undef_sym helps when a symbol isn't automatically included from a library, my situation is different. The linker warnings indicate that I haven't provided any compiled code (object files) as input, so there's nothing for it to link or resolve symbols against.

    Linking: am62px:wkup-r5fss0-0:freertos:ti-arm-clang Common_Modem_AM62P ...
    driver_stuff/tools/TI_Clang_toolchain/ti-cgt-armllvm_4.0.1.LTS/bin/tiarmclang -Wl,--diag_suppress=10063 -Wl,--priority -Wl,--ram_model -Wl,--reread_libs -Wl,-m=hello_world//projects_output_folder/Common_Modem_AM62P_OUT/Common_Modem_AM62P.map -o hello_world//projects_output_folder/Common_Modem_AM62P_OUT/Common_Modem_AM62P.out -Wl,--undef_sym=main -ldata/cm_test/cm_test/projects_output_folder/Common_Modem_AM62P_OUT/hello.lib -ldriver_stuff/tools/TI_Clang_toolchain/ti-cgt-armllvm_4.0.1.LTS/lib/libc.a -ldriver_stuff/tools/TI_Clang_toolchain/ti-cgt-armllvm_4.0.1.LTS/lib/libsysbm.a hello_world/sources/Target_Specific/AM62P/Linker_config/linker.cmd
    warning: cannot resolve archive
    driver_stuff/tools/TI_Clang_toolchain/ti
    -cgt-armllvm_4.0.1.LTS/lib/libc.a to a compatible library, as no input files
    have been encountered

  • 0 in reply to Wei Han Chan
    TI__Guru**** 249420 points
    Wei Han Chan said:
    The linker warnings indicate that I haven't provided any compiled code (object files) as input, so there's nothing for it to link or resolve symbols against.

    That's correct.  If you cannot supply any object files, the only way to overcome this situation is by using --undef_sym as I describe in my previous post.

    Thanks and regards,

    -George