I'm working on Reproducible Builds for a long time now. Having the same binary done on Windows and *nix is a big challenge particularly at Git level, even before thinking at the build process I chose not to try to have the same binary, because there are always edge cases.
The only thing I did is doing some Git heuristics and created a "mvncrlf" modified script to rebuild from a Linux host with a good chance to get the same binary as the initial builder who did the release on Windows see rebuild.sh and bin/mvncrlf in https://github.com/jvm-repo-rebuild/reproducible-central/ on some releases done by Windows users, the Git heuristics did not fully work, I ended up using source-release archive of Apache project instead of Git... Regards, Hervé On 2023/02/10 18:42:09 "Piotr P. Karwasz" wrote: > Hi, > > At Log4j we have solved all the reproducibility problems mentioned on > the wiki page[1] and we are approaching the problem of reproducibility > between different OSes. > > My goal is for the following procedure to work regardless of the > operating system of the user: > > 1. a user checks out a tagged release from the Git repository, > 2. the user runs the Maven Wrapper: 'mvn package' > 3. the user checks the SHA256 of the resulting JAR file with the one > from Maven Central. > > The only problem I have encountered so far is the difference between > line endings on Windows and UNIX systems. > > The line endings of static resources can be easily fixed using a > `.gitattributes` file, but the line endings of resources generated by > plugins may vary. Many plugins respect `System.lineSeparator()`, but > setting the `line.separator` Java system property on the command line > is no trivial task and it can not certainly be done in > `.mvn/jvm.config`. > > What do you think about introducing a POM-like system property (e.g. > `project.build.lineSeparator`) that would allow setting > `line.separator` using a simple `-Dproject.build.lineSeparator=LF` or > `-Dproject.build.lineSeparator=CRLF`? Ideally this could be a real POM > property, but I am afraid that by the time the POM is resolved, > `System.lineSeparator()` is already initialized. > > Piotr > > [1] https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=74682318 > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@maven.apache.org > For additional commands, e-mail: dev-h...@maven.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@maven.apache.org For additional commands, e-mail: dev-h...@maven.apache.org
