On Tue, 30 Mar 2021 16:20:21 GMT, John Neffenger <jgn...@openjdk.org> wrote:
> This pull request allows for reproducible builds of JavaFX on Linux, macOS, > and Windows by defining the `SOURCE_DATE_EPOCH` environment variable. For > example, the following commands create a reproducible build: > > $ export SOURCE_DATE_EPOCH=$(git log -1 --pretty=%ct) > $ bash gradlew sdk jmods javadoc > $ strip-nondeterminism -v -T $SOURCE_DATE_EPOCH build/jmods/*.jmod > > The three commands: > > 1. set the build timestamp to the date of the latest source code change, > 2. build the JavaFX SDK libraries, JMOD archives, and API documentation, and > 3. recreate the JMOD files with stable file modification times and ordering. > > The third command won't be necessary once Gradle can build the JMOD archives > or the `jmod` tool itself has the required support. For more information on > the environment variable, see the [`SOURCE_DATE_EPOCH`][1] page. For more > information on the command to recreate the JMOD files, see the > [`strip-nondeterminism`][2] repository. I'd like to propose that we allow for > reproducible builds in JavaFX 17 and consider making them the default in > JavaFX 18. > > #### Fixes > > There are at least four sources of non-determinism in the JavaFX builds: > > 1. Build timestamp > > The class `com.sun.javafx.runtime.VersionInfo` in the JavaFX Base module > stores the time of the build. Furthermore, for builds that don't run on the > Hudson continuous integration tool, the class adds the build time to the > system property `javafx.runtime.version`. > > 2. Modification times > > The JAR, JMOD, and ZIP archives store the modification time of each file. > > 3. File ordering > > The JAR, JMOD, and ZIP archives store their files in the order returned > by the file system. The native shared libraries also store their object files > in the order returned by the file system. Most file systems, though, do not > guarantee the order of a directory's file listing. > > 4. Build path > > The class `com.sun.javafx.css.parser.Css2Bin` in the JavaFX Graphics > module stores the absolute path of its `.css` input file in the corresponding > `.bss` output file, which is then included in the JavaFX Controls module. > > This pull request modifies the Gradle and Groovy build files to fix the first > three sources of non-determinism. A later pull request can modify the Java > files to fix the fourth. > > [1]: https://reproducible-builds.org/docs/source-date-epoch/ > [2]: https://salsa.debian.org/reproducible-builds/strip-nondeterminism I think there might be a Skara bug. The pre-submit builds on Linux, macOS, and Windows completed immediately. I think that's because the first of the two commits in this pull request includes the Java Bug ID from [another pending pull request][1], because this pull request is a continuation of that one. I can squash the two commits and force-push the changes, if that would help. [1]: https://github.com/openjdk/jfx/pull/422 ------------- PR: https://git.openjdk.java.net/jfx/pull/446
