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C preprocessor in assembly

Asif Rizwan

IDE:           ARM DS-5 (v5.15.0)

Platform:    Cortex R4

Hi,

I am interested to use C pre-processor in assembly file but i am facing the attached issue. According to arm documentation

Using the C preprocessorFlag.png

I set the flag --cpreproc and --cpreproc_opts but getting following issue:


Error: C3472E: No source language specified (--cpp or --c90) and sourcefile extensions conflict

Fatal error: A1905U: Pre-processor step failed for '../xx_xxxxxx_xxxxx_restore.s'

1 Error, 0 Warnings

make: *** [xx_xxxxxx_xxxxx_restore.o] Error 8

Error.png
I really appreciate your suggestions.

Thanks.

  • 0

    asi,

    Can you provide the armasm line that your tool generates? Also, what version of armasm are you using.

    I tried a line like this:

    armasm --cpu=Cortex-R4 --cpreproc --cpreproc_opts=-DTHREAD_PROFILING_ENABLED -o .obj/xxx__xxx_restore.o ../../appsrc/xxx/xxx_restore.s

    and it works as expected (no 1905 error)

  • 0 in reply to Eric Miller

    hi emiller,

    >>Can you provide the armasm line that your tool generates?

    'Building file: ../xx_xxxxxx_xxxxx_restore.s'

    'Invoking: ARM Assembler'

    armasm --cpreproc --cpreproc_opts='-DTHREAD_PROFILING_ENABLED' --cpu=7-R --arm -g -o "xx_xxxxxx_xxxxx_restore.o" "../xx_xxxxxx_xxxxx_restore.s"

    Error: C3472E: No source language specified (--cpp or --c90) and sourcefile extensions conflict

    Fatal error: A1905U: Pre-processor step failed for '../tx_thread_context_restore.s'

    1 Error, 0 Warnings

    make: *** [tx_thread_context_restore.o] Error 8

    **** Build Finished ****

    armasm.png

    >>Also, what version of armasm are you using.

    ARM Assembler, 5.03 [Build 76]

    >>and it works as expected (no 1905 error)

    if there is some mistake please let me know,

    ARM C/C++ Compiler, 5.03 [Build 76]

    armcc OUTPUT:

    'Building file: ../xx_xxxxxx_xxxxx_notify.c'

    'Invoking: ARM C Compiler'

    armcc -O3 --cpu=7-R --arm --apcs=/softfp -g -c -o "xx_xxxxxx_xxxxx_notify.o" "../xx_xxxxxx_xxxxx_notify.c"

    'Finished building: ../xx_xxxxxx_xxxxx_notify.c'

    Thanks.

  • 0 in reply to Asif Rizwan

    Hi asi,

    I'm not getting the same error as you.  I tried

    ARM Assembler, 5.03 [Build 102]
    and

    ARM Assembler, 5.03 [Build 24]
    (I don't have a copy of Build 76, so I can't duplicate your environment exactly).

    I'll take a guess at a solution, but I can't guarantee it'll work: since assembly is failing with a C preprocessor error (the "C" in "C3472E" is for "Compiler, and the "E" is for "Error") saying that it can't decide between C90 and C++, you could specify which to use explicitly in your preprocessor options.

    So instead of "--cpreproc_opts='-DTHREAD_PROFILING_ENABLED'," try "--cpreproc_opts='--c90 -DTHREAD_PROFILING_ENABLED'," which I would expect to get you past the 3472 error.

  • 0 in reply to Eric Miller

    Hi emiller,

    >>So instead of "--cpreproc_opts='-DTHREAD_PROFILING_ENABLED'," try "--cpreproc_opts='--c90 -DTHREAD_PROFILING_ENABLED'," which I would expect to get you past the 3472 error.

    Sorry for late response, I tried that one earlier but didn't succeed. I will try it again with [Build 102] and hit back there with results.

    Thanks.

  • 0 in reply to Asif Rizwan

    Hi Asi, would you mind closing the question and re-open it later if necessary? That helps keeping track of what requires attention.