Problems porting Openssl 1.1.1d to zos.

Michael Mueller abaci.mjm at
Tue Mar 3 19:41:57 UTC 2020

We recently abandoned our effort to port 1.1.1d to zos. Attempting to use
GSK now. Lack of a zos dev community is a hurdle.


On Mon, Mar 2, 2020, 6:04 AM K Lengauer <kevin.lengauer at> wrote:

> Dear all,
> I stumbled across this mails when looking for information regarding OpenSSL
> on zOS. Currently, I am working on getting OpenSSL 1.1.1c running on zOS.
> So
> far I created my own config "target" inside 10-main.conf based on the old
> configuration that was used pre OpenSSL 1.1.0.
> Still, I was not able to get that far yet and was wondering how you
> proceeded regarding this issue? Apart from some github issues and the likes
> regarding EBCDIC patches I was unable to find much advice on how to
> configure the build and how to tackle common issues. One config target for
> zOS OS390 was created a while back but then removed again from OpenSSL
> 1.1.1. With my config target I made it to the compile step but still face
> build issues. Reaching a complete build like Wendell Nichols would already
> by a great step.
> Are any of you aware of zOS specific OpenSSL development branches that I
> have yet to find? Or is this mainly done in private repositories/branches
> and not offered for PRs to the OpenSSL repository?
> Any advice is greatly appreciated.
> --
> Sent from:
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