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CCS/TM4C129CNCPDT: CCSv8.2 and "Exclude from Build" no longer works

Kaveh Vaghefi
Expert 1704 points
Part Number: TM4C129CNCPDT

Tool/software: Code Composer Studio

I just updated to CCS 8.2, and it no longer seems to respect the resource configuration setting.  We have a project where based on the build config, we use different main.cc files.  In a config where the main.cc file from the project's root directory is ignored, I still see CCS attempt to build it in the build log, which ends up doubly-defining many items:

Building file: "../main.cc"
Invoking: ARM Compiler

This completely breaks things for us.  It happens on both macOS and Linux.

  • 0
    Expert 1704 points
    Digging into it more, the subdir_rules.mk generated by automake in 8.2 uses `../%.cc $(GEN_OPTS) | $(GEN_FILES)` to build all the cc files. In 8.1, the same file generates a line for each file explicitly. Using the `%` wildcard seems wrong as it completely breaks this "exclude from build" behavior.
  • 0
    TI__Guru**** 173310 points

    Kaveh Vaghefi said:
    In a config where the main.cc file from the project's root directory is ignored, I still see CCS attempt to build it in the build log, which ends up doubly-defining many items

    Could you send us a test project that demonstrates this as I have been unable to reproduces this so far.

    Also for some background information, are you importing a project created with an older CCS into CCS 8.2, or opening an older workspace using CCS 8.2?

  • 0 in reply to AartiG
    Expert 1704 points

    Yes, I'm upgrading to 8.2 and attempting to build an existing project. I'd recommend creating a project with the following hierarchy:

    /main.cc
    /foo/main.cc

    Then exclude /main.cc from your build and attempt to build it. Inspect the output and you'll see it attempting to build the wrong main.cc.  I can't send you my full project, and attempting to create a test project to reproduce it is work I don't have time for right now.  This doesn't happen in 8.1, only 8.2.

  • 0 in reply to Kaveh Vaghefi
    TI__Guru**** 173310 points

    I tried but unfortunately I have not been able to reproduce this on a simple project that I created using the above structure. I created a project with two build configurations (Debug and Release) - Debug includes the main.cc in the root directory and excludes foo/main.cc, while Release excludes the root main.cc and includes foo/main.cc. When I build it, the expected source file is built and the expected one is excluded.

    Output of the Debug build:

    Output of the Release build:

    There must be some specific project setting or configuration that triggers the issue in your environment, which is why it would be very helpful if you could send us a reproducible test case.

  • 0 in reply to AartiG
    Expert 1704 points

    Would it be possible to show you what's happening over webex?

  • 0 in reply to Kaveh Vaghefi
    TI__Guru**** 173310 points

    Kaveh Vaghefi said:
    Would it be possible to show you what's happening over webex?

    Sure, we could do that.

    I would still need a reproducible test case to file a bug report for analysis, but perhaps the webex will help with getting there. 

    Let me connect with you offline about the webex details.

  • 0 in reply to AartiG
    TI__Guru**** 173310 points

    This issue is still not reproducible at TI. We are trying to figure out offline if there are other ways to recreate this. We will close this thread for now since there isn't immediate action/follow-up to report, but will come back and post any updates as they happen.

  • 0 in reply to AartiG
    TI__Guru**** 173310 points
    Kaveh,

    Thank you for providing your project files via private conversation. With the help of those files, we were able to recreate and identify the root cause.

    In summary, the issue is that when the --obj_directory flag is explicitly set in a project, CCS incorrectly builds a source file that is excluded from that build config.

    The issue does not happen with CCS 8.1. It was exposed in 8.2 due to a recent change in the generated makefile rules in CCS.
    The issue also does not happen in 8.2 when the Compiler ->Advanced Options ->Directory Specifier ->Mode is set to “automatic”.

    The tracking ID for this bug is CCSIDE-3439. We will try our best to get this fixed for CCS 8.3, failing which it will definitely be in CCS 9.0.

    Thank you for your patience and help in tracking this down.
  • 0 in reply to AartiG
    TI__Guru**** 173310 points
    Kaveh,

    I just got an update that this fix will not make it into CCS 8.3. It will be in CCS 9.0 which is expected by end of 1Q 2019.
    Sorry about the inconvenience and thanks for your patience.
  • 0 in reply to AartiG
    Expert 1704 points

    Thanks for the update!