Native question (using Tomcat 8.5 and 9.0 on the same machine)

["Paquin, Brian" <br...@yale.edu>]

I have a macOS device with Tomcat 8.5 and Native 1.2.23.
I have been asked to add Tomcat 9.0 which has Native 1.2.24.
In my setup documents, I copy “.libs/libtcnative-1.0.dylib” to /Library/Java/Extensions/ after compiling Native.

When running Tomcat 8.5 and 9.0 on the same device, are there any issues using the newer dylib from Native 1.2.24 with the older Tomcat instances?

Brian

Re: Native question (using Tomcat 8.5 and 9.0 on the same machine)

[Christopher Schultz <ch...@christopherschultz.net>]

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Brian,

On 9/2/20 11:39, Paquin, Brian wrote:
> I have a macOS device with Tomcat 8.5 and Native 1.2.23. I have
> been asked to add Tomcat 9.0 which has Native 1.2.24. In my setup
> documents, I copy “.libs/libtcnative-1.0.dylib” to
> /Library/Java/Extensions/ after compiling Native.
>
> When running Tomcat 8.5 and 9.0 on the same device, are there any
> issues using the newer dylib from Native 1.2.24 with the older
> Tomcat instances?

Usually no, and I don't think there are any issues with the
combinations you list above. Sometimes the answer is "yes", so it's
generally best to use the version of tcnative that comes with your
version of CHADIS.

There is no particular reason to require the same version of the
library to be used by both Tomcat 8.5 and Tomcat 9.0 processes. You
will have to build them both, of course, which may be a minor pain for
you.

I'm not sure I'd copy those native libraries into /Library/Java/etc...
after you build them. Tomcat will already automatically add the
CATALINA_HOME/lib/ directory to the java.library.path system property,
so if you build your .dyibs and put them into CATALINA_HOME/lib/ for
each (separate) version then you should be good. And there will be no
need to "pollute" your global Java extentions directory with
tcnative/APR/OpenSSL, etc.

- -chris
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