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Use -language-version 1.9 in the kotlinKythe build rule

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There are some instances of .kt code in android platform that are not
fully compatible with kotlinc > 2. To account for this version skew when
generating xrefs, implicitly add `-language-version 1.9` to the args in
the .kzip file. The main kotlinc build rules remain the same.

This value has been picked manually by running
`external/kotlinc/bin/kotlinc -version` at ToT

Bug: 265428637
Test: verified that `-language-version 1.9` is added to the build
command of the .kzip files
Test: ran the indexer locally on the .kzip of `PermissionController-lib`
(this android_library contains .kt code that does not compile with
verison >2)

Change-Id: Icfb72800404d83f63204de23a1ec34b40ee05847
This commit is contained in:
Spandan Das
2024-09-12 18:06:24 +00:00
parent 600afbe381
commit 3d6c6d9c76
2 changed files with 9 additions and 3 deletions
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7
java/config/kotlin.go
View File

@@ -50,4 +50,11 @@ func init() {
}, " "))
pctx.StaticVariable("KotlincGlobalFlags", strings.Join([]string{}, " "))
// Use KotlincKytheGlobalFlags to prevent kotlinc version skew issues between android and
// g3 kythe indexers.
// This is necessary because there might be instances of kotlin code in android
// platform that are not fully compatible with the kotlinc used in g3 kythe indexers.
// e.g. uninitialized variables are a warning in 1.*, but an error in 2.*
// https://github.com/JetBrains/kotlin/blob/master/compiler/fir/checkers/gen/org/jetbrains/kotlin/fir/analysis/diagnostics/FirErrors.kt#L748
pctx.StaticVariable("KotlincKytheGlobalFlags", strings.Join([]string{"-language-version 1.9"}, " "))
}

5
java/kotlin.go
View File

@@ -65,8 +65,6 @@ var kotlinc = pctx.AndroidRemoteStaticRule("kotlinc", android.RemoteRuleSupports
"headerClassesDir", "headerJar", "kotlinJvmTarget", "kotlinBuildFile", "emptyDir", "name")
var kotlinKytheExtract = pctx.AndroidStaticRule("kotlinKythe",
// TODO (b/265428637): To prevent kotlinc version skew between android builds and internal kotlin indexers (g3), consider embedding the kotlinc used by android into the kzip file.
// This has an impact on .kzip sizes, so defer that for now.
blueprint.RuleParams{
Command: `rm -rf "$srcJarDir" && mkdir -p "$srcJarDir" && ` +
`${config.ZipSyncCmd} -d $srcJarDir -l $srcJarDir/list -f "*.java" -f "*.kt" $srcJars && ` +
@@ -76,7 +74,8 @@ var kotlinKytheExtract = pctx.AndroidStaticRule("kotlinKythe",
// Skip header jars, those should not have an effect on kythe results.
` --args '${config.KotlincGlobalFlags} ` +
` ${config.KotlincSuppressJDK9Warnings} ${config.JavacHeapFlags} ` +
` $kotlincFlags -jvm-target $kotlinJvmTarget'`,
` $kotlincFlags -jvm-target $kotlinJvmTarget ` +
`${config.KotlincKytheGlobalFlags}'`,
CommandDeps: []string{
"${config.KotlinKytheExtractor}",
"${config.ZipSyncCmd}",