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`TARGET=java` generates `source/MeshLibJava/src` with mrbind_gen_java, compiles it and packs `meshlib.jar`. Examples and the 92 tests of MRTestRust ported to Java, built with plain javac. CI runs them in the same Release jobs as Rust, with a Temurin JDK 25 downloaded into the runner temp directory when needed. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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TARGET=javainscripts/mrbind/generate.mk, on top of the Java generator from MeshInspector/mrbind#55, the same way #7104 addedTARGET=rust. Stacked on #7104.What it does
make -f scripts/mrbind/generate.mk TARGET=javaconsumes the C bindings description JSON (soTARGET=cmust run first, as for C# and Rust), generates the sources intosource/MeshLibJava/src(--package meshlib --force-namespace MR, so the API ismeshlib.mr.Mesh,meshlib.mr.Functions.makeCube(...), ...), compiles them with-Xlint:all -Werror, and packssource/MeshLibJava/meshlib.jar. All of that is ignored by git; only a README is committed insource/MeshLibJava. The bindings use the foreign function API of Java 22, so the jar has no native code of its own: at runtime the MeshLib shared libraries must be injava.library.path.examples/java-examples:MeshBoolean,MeshDecimateandMeshLoadSave, ported from the Rust examples. They're compiled with plainjavac, no build system.source/MRTestJava: the 92 tests ofMRTestRust, ported 1:1. Also plainjavac, with a 60-line runner instead of a test framework, to keep the bindings dependency-free.MeshBooleanand the tests..github/actions/setup-javadownloads a Temurin JDK 25 into the runner's temp directory when the runner has no JDK 22+ (the GitHub-hosted images ship up to 21), likesetup-rustdoes for cargo.build-mrbindkeeps and stripsmrbind_gen_javatoo.thirdparty/mrbindgitlink points at the head of Add a Java bindings generator on top of the C bindings mrbind#55, to be re-bumped after that PR merges.Testing
Locally on Windows:
generate_win.bat TARGET=javafrom the CI description JSON compiles all 37764 functions (3157 classes) in ~20 s with zero warnings, and 91 of the 92 tests pass against the 3.1.4 NuGet binaries (the one failure callsMR_computePerFaceNormals_1, which those binaries predate; the Rust tests have the same local failure).MeshBooleanruns and writesout_boolean.stl.🤖 Generated with Claude Code