Accessing dylibs on Catalina

Question

Created Dec ’20

Replies 3

Boosts 0

Participants 2

With the latest security update on Catalina we can no longer access our dylibs. We have an Excel Addin and use dylibs for some of the more advanced calculations.
We have tried using codesign but cannot seem to get it to work.

Any ideas would be appreciated.

If I have used the wrong tag - I apologize.

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Answer 1

DTS Engineer OP

Apple

Dec ’20

It’s hard to say what’s going on here without more info. Please clarify:

The phrase “With the latest security update on Catalina” — Exactly which security update broke your product?
What you mean by “we can no longer access our dylibs” — What specifically fails? And what error do you get?

With regards the first point, I find that testing this stuff in a VM really helps. That way you can use snapshots to start from a known working system and work your way forwards to the point that it fails.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@apple.com"

0

Answer 2

Cyn_1 OP

Dec ’20

Thank you for your reply.

We are on Catalina 10.15.7 - it works on the version before this update.
Error msg is "dylib cannot be opened because the developer cannot be verified."
We have created a certificate and tried to sign but it does not seem to work.
codesign seemed to be the way to do this but we can't get it to work.

The dylibs are installed in the Library/Application Support folder and we use Packages as the installer.

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Answer 3

DTS Engineer OP

Apple

Dec ’20

We are on Catalina 10.15.7 - it works on the version before this
update.

What version was that?

Error msg is "dylib cannot be opened because the developer cannot be
verified."

Is this presented in the UI? Or returned as an error from some API? If it’s the latter, what API was that?

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@apple.com"

0