On 5/4/20 11:15 AM, Iñaki Ucar wrote: > Hi, thanks for your assistance, comments inline: > > On Mon, 4 May 2020 at 10:48, Jiri Vanek <jvanek@xxxxxxxxxx> wrote: >> >> Generally, no program can say, that do not support jdk11, because any javac/java application can be >> *hacked* to work with java11 - see >> https://jvanek.fedorapeople.org/devconf/2017/portingjavaInternalToJdk9/portingOfItwToJdk9-II.pdf >> (really all except package split over modules, which is impossible) >> >> Now above mentione approaches are indeed *hacked*, and I discourage everybody to do so. > > As you mentioned below, I depend on GWT, and it's waaay to complex to > take this approach. > >> If you package is really bound to jdk8, you can move to the version-full requires: >> BuildRequires: java-1.8.0-openjdk-devel (or java-devel <= 1:1.8.0 or similar) >> ... >> Requires: java-1.8.0-openjdk(-headless) (or java(-headless) <= 1:1.8.0 or similar) >> >> However there is an trap - packages you depends on. Once some of your dependencies will be compiled >> with --target > 8, you are doomed, and you have to bundle it or create its compact version. By doing >> so you can easily end in dependency hell. > > RStudio only uses Java to compile a series of web components during > build time. Then, the requires are clean from Java components, and its > usage doesn't invoke the JVM. So it's been identified as a Java app > because build-requires java-devel, but it's not really a Java app. > >> With GWT, I'm afraid you will need to try this approach, as it is to complex framework that any >> hacking on this field is really risky. And I'm sorry to hear they are not on jdk11 already, as this >> fate can likely met many other packages. > > They build against a very specific version of GWT, and that's why it's > bundled. Future versions will update GWT and we will probably be able > to use Java 11. Let's see. > >> Looking to spec of rstudio, and considering it have nearly no not-bundled dependence, and its >> upstream being stuck on jdk8, requiring jdk8 looks like correct step for a while. If yo have any >> influence in upstream, please be force GWT to move to jdk11. >> Be aware, that you may end in needing to adapt also launcher, as japackage-tools will be enforcing >> java-11-openjdk. You can easily do it by exporting JAVA_HOME with /usr/lib/jvm/java-1.8.0-openjdk value >> >> Good luck, >> Please let me know once you success with it. I willa dd an chapter to >> https://fedoraproject.org/wiki/Changes/Java11#common_issues_packagers_can_face_and_gathered_solutions > > Thanks, but as I said above, the RStudio rpms don't pull the JVM, > because it's not required at runtime. So I suppose that, beyond fixing > the java-devel version in BuildRequires, I don't need to do anything > more, right? Hopefully:) TYVM! > -- Jiri Vanek Senior QE engineer, OpenJDK QE lead, Mgr. Red Hat Czech jvanek@xxxxxxxxxx M: +420775390109 _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
