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Feb 18, 2026
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Merged

Add support for newer JDK versions #1361

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c480f10
Add support for newer JDK versions
Bencodes Sep 5, 2025
b130068
Add 25
Bencodes Feb 18, 2026
a7278a9
Update docs
Bencodes Feb 18, 2026
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2 changes: 1 addition & 1 deletion README.md
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Expand Up @@ -102,7 +102,7 @@ load("@rules_kotlin//kotlin:core.bzl", "define_kt_toolchain")
define_kt_toolchain(
name = "kotlin_toolchain",
api_version = KOTLIN_LANGUAGE_LEVEL, # "1.9", "2.0", "2.1", "2.2", or "2.3"
jvm_target = JAVA_LANGUAGE_LEVEL, # "1.8", "9", "10", "11", "12", "13", "15", "16", "17", "18", "19", "20", "21", or "22"
jvm_target = JAVA_LANGUAGE_LEVEL, # "1.8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", or "25"
language_version = KOTLIN_LANGUAGE_LEVEL, # "1.9", "2.0", "2.1", "2.2", or "2.3"
)
```
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2 changes: 1 addition & 1 deletion docs/kotlin.md
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Expand Up @@ -421,7 +421,7 @@ Define kotlin compiler options.
| <a id="kt_kotlinc_options-x_enable_incremental_compilation"></a>x_enable_incremental_compilation | Enable incremental compilation | Boolean | optional | `False` |
| <a id="kt_kotlinc_options-x_explicit_api_mode"></a>x_explicit_api_mode | Enable explicit API mode for Kotlin libraries. | String | optional | `"off"` |
| <a id="kt_kotlinc_options-x_inline_classes"></a>x_inline_classes | Enable experimental inline classes | Boolean | optional | `False` |
| <a id="kt_kotlinc_options-x_jdk_release"></a>x_jdk_release | Compile against the specified JDK API version, similarly to javac's '-release'. This requires JDK 9 or newer. The supported versions depend on the JDK used; for JDK 17+, the supported versions are 1.8 and 9-21. This also sets the value of '-jvm-target' to be equal to the selected JDK version. | String | optional | `""` |
| <a id="kt_kotlinc_options-x_jdk_release"></a>x_jdk_release | Compile against the specified JDK API version, similarly to javac's '-release'. This requires JDK 9 or newer. The supported versions depend on the JDK used; for JDK 25+, the supported versions are 1.8 and 9-25. This also sets the value of '-jvm-target' to be equal to the selected JDK version. | String | optional | `""` |
| <a id="kt_kotlinc_options-x_jspecify_annotations"></a>x_jspecify_annotations | Controls how JSpecify annotations are treated. Options are 'default', 'ignore', 'warn', and 'strict'. | String | optional | `""` |
| <a id="kt_kotlinc_options-x_jsr_305"></a>x_jsr_305 | Specifies how to handle JSR-305 annotations in Kotlin code. Options are 'default', 'ignore', 'warn', and 'strict'. | String | optional | `""` |
| <a id="kt_kotlinc_options-x_jvm_default"></a>x_jvm_default | DEPRECATED: Use jvm_default instead for Kotlin 2.2+. Specifies that a JVM default method should be generated for non-abstract Kotlin interface member. Migration to jvm_default: - x_jvm_default=all -> jvm_default=no-compatibility - x_jvm_default=all-compatibility -> jvm_default=enable - x_jvm_default=disable -> jvm_default=disable | String | optional | `"off"` |
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4 changes: 4 additions & 0 deletions kotlin/internal/toolchains.bzl
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Expand Up @@ -236,6 +236,10 @@ _kt_toolchain = rule(
"19",
"20",
"21",
"22",
"23",
"24",
"25",
],
),
"kotlin_home": attr.label(
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6 changes: 3 additions & 3 deletions src/main/starlark/core/options/opts.kotlinc.bzl
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Expand Up @@ -100,7 +100,7 @@ Options:
args = dict(
default = "",
doc = "The target version of the generated JVM bytecode",
values = ["1.6", "1.8", "9", "10", "11", "12", "13", "15", "16", "17", "21"],
values = ["1.6", "1.8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25"],
),
type = attr.string,
value_to_flag = None,
Expand Down Expand Up @@ -254,9 +254,9 @@ default: 'first-only-warn' in language version 2.2+, 'first-only' in version 2.1
args = dict(
default = "",
doc = """Compile against the specified JDK API version, similarly to javac's '-release'. This requires JDK 9 or newer.
The supported versions depend on the JDK used; for JDK 17+, the supported versions are 1.8 and 9-21.
The supported versions depend on the JDK used; for JDK 25+, the supported versions are 1.8 and 9-25.
This also sets the value of '-jvm-target' to be equal to the selected JDK version.""",
values = ["1.6", "1.8", "9", "10", "11", "12", "13", "15", "16", "17", "21"],
values = ["1.6", "1.8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25"],
),
type = attr.string,
value_to_flag = None,
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