[fedora-java] Re: JNI shared objects in %{_prefix}/lib
On Thu, 2021-10-07 at 08:33 +0200, Mikolaj Izdebski wrote:
Hello,
I want to propose updating Java Packaging Guidelines [1] to allow
installation of JNI shared objects in %{_prefix}/lib/%{name} or in
%{_libdir}/%{name}, according to packager preference.
%{_libdir} expands to either /usr/lib or /usr/lib64 (depending on
system architecture), while %{_prefix}/lib always expands to /usr/lib.
To see what %{_libdir} expands to on each platform, you can run: grep
%_libdir -r /usr/lib/rpm/platform/
Currently Java Packaging Guidelines require all packages to install
JNI shared objects in %{_libdir}/%{name}, which causes issues for
noarch packages that want to refer to such shared objects. For example
Maven needs to install a symlink to libjansi.so. Since Maven is a
noarch package, the symlink must technically point to one fixed
location, but libjansi.so ought to be installed in different locations
on different architectures. Moving libjansi.so to one location across
all architectures solves this problem. An alternative solution
involves usage of a ghost symlink manipulated by scriplets, which in
my opinion is an inferior solution.
Java has been granted multilib exemption by FESCo [2], therefore I
would like to allow installation of JNI shared objects in
%{_prefix}/lib/%{name} or %{_libdir}/%{name}.
Does anyone have any objections or feedback before I go with this
request to FPC?
Seems reasonable to me.
Thanks,
Severin
[1] https://docs.fedoraproject.org/en-US/packaging-guidelines/Java/
[2] https://pagure.io/fesco/issue/961
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