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Produce deterministic jar files.

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This resets all timestamps present in jars produced by kotlinc.

This is important for build systems like bazel that rely on
deterministic outputs.

Before:

```
$ kotlinc ~/test.kt -d /tmp/a.jar
$ kotlinc ~/test.kt -d /tmp/b.jar
9ab80cd40c9293a7a66adf1154d4e6e9aa92d5b0  /tmp/a.jar
1ba022697317f796bd123fb4dc95418a18bcb51a  /tmp/a.jar
6d2a2683470c24928f3fbd6768a4c57f55b0d196  /tmp/b.jar
$ unzip -l /tmp/a.jar
Archive:  /tmp/a.jar
  Length      Date    Time    Name
---------  ---------- -----   ----
       75  09-25-2020 16:48   META-INF/MANIFEST.MF
      683  09-25-2020 16:48   TestKt.class
       28  09-25-2020 16:48   META-INF/main.kotlin_module
---------                     -------
      786                     3 files
```

After:

```
$ kotlinc ~/test.kt -d /tmp/a.jar
$ kotlinc ~/test.kt -d /tmp/b.jar
$ shasum /tmp/a.jar /tmp/b.jar
9ab80cd40c9293a7a66adf1154d4e6e9aa92d5b0  /tmp/a.jar
9ab80cd40c9293a7a66adf1154d4e6e9aa92d5b0  /tmp/b.jar
$ unzip -l /tmp/a.jar
Archive:  /tmp/a.jar
  Length      Date    Time    Name
---------  ---------- -----   ----
       75  12-31-1969 19:00   META-INF/MANIFEST.MF
      590  12-31-1969 19:00   TestKt.class
       36  12-31-1969 19:00   META-INF/main.kotlin_module
---------                     -------
      701                     3 files
```

See https://github.com/JetBrains/kotlin/pull/3226 for a similar change.
This commit is contained in:
Martin Petrov
2020-09-25 16:45:12 -04:00
committed by Alexander Udalov
parent a3830b2611
commit 68fdeaf865
7 changed files with 130 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files
compiler/config.jvm/src/org/jetbrains/kotlin/config/JVMConfigurationKeys.java
+3
View File
@@ -129,6 +129,9 @@ public class JVMConfigurationKeys {
public static final CompilerConfigurationKey<Boolean> NO_KOTLIN_NOTHING_VALUE_EXCEPTION =
CompilerConfigurationKey.create("Do not use KotlinNothingValueException available since 1.4");
public static final CompilerConfigurationKey<Boolean> NO_RESET_JAR_TIMESTAMPS =
CompilerConfigurationKey.create("Do not reset timestamps in jar entries");
public static final CompilerConfigurationKey<Boolean> NO_UNIFIED_NULL_CHECKS =
CompilerConfigurationKey.create("Use pre-1.4 exception types in null checks instead of java.lang.NPE");