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perf_bench: compile the driver mod with JAVA_HOME's javac

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The vanilla runs start `$JAVA_HOME/bin/java`, but the driver mod was
built with whatever `javac` came first on PATH. With JAVA_HOME on a JDK 25
and an older default JDK on PATH (21 on Ubuntu 24.04, for example),
`javac --release 25` fails with "release version 25 not supported" before
any game starts. Use JAVA_HOME's javac when JAVA_HOME is set, as the java
lookups below already do; without it, PATH is used as before.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01UE3PMKbnTcxfBSeT5uQWCK
This commit is contained in:
degepieandClaude Opus 5.5 committed 2026-10-29 00:21:18 +05:00
1 parent b7df7bd9e0
commit de25583ee5
1 file changed
+2 -1
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tools/perf_bench.py
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@@ -510,7 +510,8 @@ def build_bench_mod(jars):
shutil.rmtree(classes, ignore_errors=True)
classes.mkdir(parents=True)
sources = sorted(map(str, (source / "java").rglob("*.java")))
subprocess.run(["javac", "--release", "25", "-proc:none", "-encoding", "UTF-8", "-d", str(classes),
javac = Path(os.environ["JAVA_HOME"]) / "bin/javac" if os.environ.get("JAVA_HOME") else "javac"
subprocess.run([str(javac), "--release", "25", "-proc:none", "-encoding", "UTF-8", "-d", str(classes),
"-classpath", os.pathsep.join(map(str, jars)), *sources], check=True)
output = build / "horizon-bench.jar"
with zipfile.ZipFile(output, "w", compression=zipfile.ZIP_DEFLATED) as archive: