Build: Make JavaExec relative path system independent

buildSrc/src/main/kotlin/CommonUtil.kt

@@ -7,8 +7,8 @@ import org.gradle.api.Task
 import org.gradle.api.file.CopySourceSpec
 import org.gradle.api.file.SourceDirectorySet
 import org.gradle.api.plugins.JavaPluginConvention
+import org.gradle.api.tasks.JavaExec
 import org.gradle.api.tasks.SourceSet
-import org.gradle.api.tasks.SourceSetContainer
 import org.gradle.api.tasks.SourceSetOutput
 import org.gradle.kotlin.dsl.*
 import java.io.File
@@ -69,3 +69,5 @@ inline fun CopySourceSpec.from(crossinline filesProvider: () -> Any?): CopySourc
 fun Project.javaPluginConvention(): JavaPluginConvention = the()
 
 fun Project.findJavaPluginConvention(): JavaPluginConvention? = convention.findByType() ?: convention.findPlugin()
+
+fun JavaExec.pathRelativeToWorkingDir(file: File): String = file.relativeTo(workingDir).invariantSeparatorsPath

core/builtins/build.gradle.kts

@@ -32,8 +32,8 @@ val serialize by tasks.registering(NoDebugJavaExec::class) {
     main = "org.jetbrains.kotlin.serialization.builtins.RunKt"
     jvmArgs("-Didea.io.use.nio2=true")
     args(
-        outDir.relativeTo(projectDir),
-        *inDirs.map { it.relativeTo(projectDir) }.toTypedArray()
+        pathRelativeToWorkingDir(outDir),
+        *inDirs.map(::pathRelativeToWorkingDir).toTypedArray()
     )
 }
 

libraries/stdlib/js-ir/build.gradle.kts

@@ -174,9 +174,6 @@ fun JavaExec.buildKLib(
     outDir: File,
     commonSources: List<File>
 ) {
-
-    fun File.pathRelativeToWorkingDir(): String = absoluteFile.relativeTo(workingDir).path
-
     inputs.files(sources)
         .withPathSensitivity(PathSensitivity.RELATIVE)
 
@@ -186,10 +183,10 @@ fun JavaExec.buildKLib(
     classpath = jsIrKlibCli
     main = "org.jetbrains.kotlin.ir.backend.js.GenerateJsIrKlibKt"
     workingDir = rootDir
-    args = sources.map { it.pathRelativeToWorkingDir() } +
-            listOf("-n", moduleName, "-o", outDir.pathRelativeToWorkingDir()) +
-            dependencies.flatMap { listOf("-d", it.pathRelativeToWorkingDir()) } +
-            commonSources.flatMap { listOf("-c", it.pathRelativeToWorkingDir()) }
+    args = sources.map(::pathRelativeToWorkingDir) +
+            listOf("-n", moduleName, "-o", pathRelativeToWorkingDir(outDir)) +
+            dependencies.flatMap { listOf("-d", pathRelativeToWorkingDir(it)) } +
+            commonSources.flatMap { listOf("-c", pathRelativeToWorkingDir(it)) }
 
     dependsOn(":compiler:cli-js-klib:jar")
     passClasspathInJar()