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  VS Arduino › Visual Micro › Installation & Troubleshooting › Question about recent solution for Linker failures due to long parameter list
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Normal Topic Question about recent solution for Linker failures due to long parameter list (Read 749 times)
cfeied
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Question about recent solution for Linker failures due to long parameter list
Feb 7th, 2024 at 7:24pm
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I was one of the people bitten by failed linking due to long parameter lists exceeding the Windows unicode string length of 32K characters. This problem shows up with the error:

arm-none-eabi-gcc*: fatal error: cannot execute c:\program files (x86) \ arduino \ hardware \ tools \ arm \ bin \..\ libexec \ gcc \ arm-none-eab \ 11.3.1 \ collect2.exe: CreateProcess: No such file or directory

The latest VisualMicro update does resolve the issue. Here is my question:  

After the update, the parameter list no longer seems to appear in the build output. Perhaps it's being passed through a file or a pipe or some other out-of-band path? Where can I look to see what is passed to the linker?

Thanks!

Craig
« Last Edit: Feb 7th, 2024 at 7:28pm by cfeied »  
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Tim@Visual Micro
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Re: Question about recent solution for Linker failures due to long parameter list
Reply #1 - Feb 7th, 2024 at 10:45pm
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When the command line for the link will be greater than 28k there is a pre link phase where you will see a libs.a file created containing all the compiled .o files for each folder of a library. 

.a files are simply gcc archives that can be viewed with an zip viewer.

The resulting libs.a files are included in the linker statements instead of all of the .o files.

Creation of the .a files is cached based on the most recent modified date of the files iit contains.

Clicking rebuild will show the process happening again.
  
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cfeied
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Re: Question about recent solution for Linker failures due to long parameter list
Reply #2 - Feb 7th, 2024 at 11:45pm
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Thank you!
  
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