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cdsenv variables

AurelBuche

Hi All,

1.

I have seen custom variables in .cdsenv editor (done by external EDA vendors to setup their plugins)

How can I do the same and create custom .cdsenv variables to configure the tools I developed?

2.

I am also wondering, is there a way to find .cdsenv variables documentation?

I find it quite tricky to guess the behavior of each variable only using its name and available values

It is also a pain to find the exact variable answering to an expected behavior...

(It only works with luck or sometimes there is an article in the online support website or a post on this forum, otherwise I am stuck)

Cheers,

Aurel

Parents

  • Hi Aurel,

    This is not that clearly described in the documentation, unfortunately. If you search for "cdsenv registration" in cdnshelp you'll find two sections:

    .cdsenv for Applications (which describes the format of the registration file, but it suggests that it must exist within the IC installation - it doesn't have to)

    Integration Recommendation for EDA Vendors (which is based on an application note/presentation I wrote a few years ago) which talks about having a file toolName.cdsenv found via the setup.loc (Cadence Search File) mechanism. The idea is that the file has to be the same name as your new custom tool, and the tool name in the first column needs to match that. For example, I created a file called mysim.cdsenv with contents like this:

    mysim.envOpts spefFile string "" nil extraComment
    mysim.init remoteDir string "" nil otherComment

    and then I can do envGetVal("mysim.init" "remoteDir")

    Note that the tool name cannot match one of the Cadence existing tool names.

    As for finding documentation, or links from the form to the cdsenv, there's no consistent way of doing this (history, I'm afraid).  The best you have is keyword searching for the variable name. I've been pushing for a better way of doing this, but it's not an overnight task.

    Andrew

  • in reply to Andrew Beckett

    Hi Andrew,

    Sorry for the late response

    Thanks for your anwser, I will use the integration part Slight smile

    Sadly the cdsenv variables don't have a regular documentation structure just as I feared

    Have a nice day

    Aurélien

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