Not a full response but an additional source.
On 02.08.2019 11:12, Polina Georgieva wrote:
Would you please clarify the compatibility restrictions (if any) between
the Apache Tomcat Native Lib and its dependencies on one hand and between
Apache Tomcat server and the native lib. My questions are based on the
information available here: http://tomcat.apache.org/native-doc/
You may also want to look at these pages :
1) Is it possible (or at all advisable) to build the tc-native once and
then use it on a system that is not necessarily with the same versions of
dependencies or JVM as the ones it was built with? Or for productive
systems it is recommend always to compile on the actual system that the lib
will be running on. I’m specifically interested for Linux environment.
Again, not a full response, but some info :
For most Linux distributions, there exist a software package manager which allows to
install a pre-determined version of tomcat, including the tc-native library, and they are
guaranteed to work together and with the installed OS and the installed java JVM version.
(Because the "packagers" of these distributions normally make sure that this is
The only catch is that these versions are not necessarily always the latest available
tomcat versions per the tomcat website. Some Linux distributions are better than others in
terms of staying up-to-date, but generally-speaking anything related to security is pretty
If you want to always run the latest version as per the official tomcat website, then the
"download" page of that website is your best choice, and whatever links you find there
will always be for versions compatible with one another.
But be aware in that case, that the standard layout of the files of the official tomcat
website download package, is probably different from the layout of the packaged tomcats
available from your Linux distribution, and that in case of updates, you will not be able
to switch so easily from one to the other method.
The "migration" page cited above provides additional information on that topic.
2) Are there strict requirements for the dependencies versions, meaning
Tomcat Native Lib version X works only with APR version Y, OpenSSL version
Z, etc. ?
3) Are there any strict compatibility mapping between the native lib
version and the Tomcat server version? In other words could every Tomcat
version work smoothly with the latest tc-native version?
Thanks a lot!
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