Enable linuxX64 native target for Compose Multiplatform Core libraries

buildSrc-fork/private/src/main/kotlin/androidx/build/AndroidXMultiplatformExtension.kt

@@ -1,4 +1,4 @@
-/*
+/*
  * Copyright 2022 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -706,7 +706,7 @@ abstract class AndroidXMultiplatformExtension(val project: Project) {
 
     @JvmOverloads
     fun linux(block: Action<KotlinNativeTarget>? = null): List<KotlinNativeTarget> {
-        return listOfNotNull(linuxArm64(block), linuxX64(block))
+        return listOfNotNull(linuxX64(block))
     }
 
     @JvmOverloads

buildSrc-fork/private/src/main/kotlin/org/jetbrains/androidx/build/AndroidXForkTargetsExtensions.kt

@@ -199,10 +199,9 @@ fun addIosInstrumentedTestSourceset(project: Project) {
                 isStatic = true
             }
         }
-        testableTargets.getByName(
-            "iosSimulatorArm64",
-            KotlinNativeTargetWithSimulatorTests::class,
-            KotlinNativeTargetWithSimulatorTests::configureTestRun
-        )
+        val iosSimulatorArm64 = testableTargets.findByName("iosSimulatorArm64")
+        if (iosSimulatorArm64 is KotlinNativeTargetWithSimulatorTests) {
+            iosSimulatorArm64.configureTestRun()
+        }
     }
 }

buildSrc-fork/public/src/main/kotlin/org/jetbrains/androidx/build/ComposePlatforms.kt

@@ -91,7 +91,7 @@ enum class ComposePlatforms(vararg val alternativeNames: String) {
         val GENERATE_KLIB = WEB + LINUX_NATIVE + WINDOWS_NATIVE + DARWIN
 
         val SKIKO_SUPPORT =
-            EnumSet.of(KotlinMultiplatform) + JVM_BASED + IOS + MACOS_NATIVE + WEB
+            EnumSet.of(KotlinMultiplatform) + JVM_BASED + IOS + MACOS_NATIVE + WEB + LinuxX64
 
         val ALL = EnumSet.allOf(ComposePlatforms::class.java)
 

buildSrc/private/src/main/kotlin/androidx/build/AndroidXMultiplatformExtension.kt

@@ -1,4 +1,4 @@
-/*
+/*
  * Copyright 2022 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -706,7 +706,7 @@ abstract class AndroidXMultiplatformExtension(val project: Project) {
 
     @JvmOverloads
     fun linux(block: Action<KotlinNativeTarget>? = null): List<KotlinNativeTarget> {
-        return listOfNotNull(linuxArm64(block), linuxX64(block))
+        return listOfNotNull(linuxX64(block))
     }
 
     @JvmOverloads

buildSrc/private/src/main/kotlin/org/jetbrains/androidx/build/AndroidXForkTargetsExtensions.kt

@@ -202,10 +202,9 @@ fun addIosInstrumentedTestSourceset(project: Project) {
                 isStatic = true
             }
         }
-        testableTargets.getByName(
-            "iosSimulatorArm64",
-            KotlinNativeTargetWithSimulatorTests::class,
-            KotlinNativeTargetWithSimulatorTests::configureTestRun
-        )
+        val iosSimulatorArm64 = testableTargets.findByName("iosSimulatorArm64")
+        if (iosSimulatorArm64 is KotlinNativeTargetWithSimulatorTests) {
+            iosSimulatorArm64.configureTestRun()
+        }
     }
 }

buildSrc/public/src/main/kotlin/org/jetbrains/androidx/build/ComposePlatforms.kt

@@ -91,7 +91,7 @@ enum class ComposePlatforms(vararg val alternativeNames: String) {
         val GENERATE_KLIB = WEB + LINUX_NATIVE + WINDOWS_NATIVE + DARWIN
 
         val SKIKO_SUPPORT =
-            EnumSet.of(KotlinMultiplatform) + JVM_BASED + IOS + MACOS_NATIVE + WEB
+            EnumSet.of(KotlinMultiplatform) + JVM_BASED + IOS + MACOS_NATIVE + WEB + LinuxX64
 
         val ALL = EnumSet.allOf(ComposePlatforms::class.java)
 

compose/animation/animation-core/build-fork.gradle

@@ -42,6 +42,7 @@ androidXMultiplatform {
     }
     desktop()
     mac()
+    linux()
     ios()
     js()
     wasmJs()

compose/animation/animation-core/src/linuxMain/kotlin/androidx/compose/animation/core/Expect.linux.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2026 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.compose.animation.core
+
+import kotlin.native.concurrent.ThreadLocal
+
+@ThreadLocal
+private val threadObject = Any()
+
+internal actual fun getCurrentThread(): Any = threadObject

compose/animation/animation/build-fork.gradle

@@ -47,6 +47,7 @@ androidXMultiplatform {
     }
     desktop()
     mac()
+    linux()
     ios()
     js()
     wasmJs()

compose/foundation/foundation-layout/build-fork.gradle

@@ -41,6 +41,7 @@ androidXMultiplatform {
     }
     desktop()
     mac()
+    linux()
     ios()
     js()
     wasmJs()

compose/foundation/foundation/build-fork.gradle

@@ -44,6 +44,7 @@ androidXMultiplatform {
     }
     desktop()
     mac()
+    linux()
     ios()
     js()
     wasmJs()

compose/foundation/foundation/src/linuxMain/kotlin/androidx/compose/foundation/LinuxClickableOverscrollActuals.kt

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2026 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.compose.foundation
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalAccessorScope
+
+internal actual val TapIndicationDelay: Long = 0L
+
+@Composable
+internal actual fun rememberPlatformOverscrollEffect(): OverscrollEffect? = null
+
+internal actual fun CompositionLocalAccessorScope.defaultOverscrollFactory(): OverscrollFactory? = null
+
+internal actual fun isRequestFocusOnClickEnabled(): Boolean = true

compose/foundation/foundation/src/linuxMain/kotlin/androidx/compose/foundation/gestures/LinuxScrollableActuals.kt

@@ -0,0 +1,52 @@
+/*
+ * Copyright 2026 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.compose.foundation.gestures
+
+import androidx.compose.animation.SplineBasedFloatDecayAnimationSpec
+import androidx.compose.animation.core.generateDecayAnimationSpec
+import androidx.compose.animation.rememberSplineBasedDecay
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.input.pointer.PointerEvent
+import androidx.compose.ui.node.CompositionLocalConsumerModifierNode
+import androidx.compose.ui.unit.Density
+import androidx.compose.ui.unit.IntSize
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.util.fastFold
+
+internal actual fun platformScrollableDefaultFlingBehavior(): ScrollableDefaultFlingBehavior =
+    DefaultFlingBehavior(
+        SplineBasedFloatDecayAnimationSpec(UnityDensity).generateDecayAnimationSpec()
+    )
+
+@Composable
+internal actual fun rememberPlatformDefaultFlingBehavior(): FlingBehavior {
+    val flingSpec = rememberSplineBasedDecay<Float>()
+    return remember(flingSpec) {
+        DefaultFlingBehavior(flingSpec)
+    }
+}
+
+internal actual fun CompositionLocalConsumerModifierNode.platformScrollConfig(): ScrollConfig =
+    LinuxScrollConfig
+
+private object LinuxScrollConfig : ScrollConfig {
+    override fun Density.calculateMouseWheelScroll(event: PointerEvent, bounds: IntSize): Offset {
+        return event.changes.fastFold(Offset.Zero) { acc, c -> acc + c.scrollDelta } * -64.dp.toPx()
+    }
+}

compose/foundation/foundation/src/linuxMain/kotlin/androidx/compose/foundation/internal/LinuxClipboardUtilsActuals.kt

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2026 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+@file:OptIn(ExperimentalComposeUiApi::class)
+
+package androidx.compose.foundation.internal
+
+import androidx.compose.ui.ExperimentalComposeUiApi
+import androidx.compose.ui.platform.ClipEntry
+import androidx.compose.ui.platform.NativeClipboard
+import androidx.compose.ui.text.AnnotatedString
+import androidx.compose.ui.platform.Clipboard
+
+internal actual suspend fun ClipEntry.readText(): String? = getPlainText()
+
+internal actual suspend fun ClipEntry.readAnnotatedString(): AnnotatedString? {
+    val text = getPlainText() ?: return null
+    return AnnotatedString(text)
+}
+
+internal actual fun AnnotatedString?.toClipEntry(): ClipEntry? {
+    if (this == null) return null
+    return ClipEntry.withPlainText(this.text)
+}
+
+internal actual fun ClipEntry?.hasText(): Boolean = this?.getPlainText() != null
+
+internal actual fun Clipboard.isReadSupported(): Boolean = true
+internal actual fun Clipboard.isWriteSupported(): Boolean = true
+
+internal fun NativeClipboard.hasText(): Boolean {
+    return true
+}

compose/foundation/foundation/src/linuxMain/kotlin/androidx/compose/foundation/lazy/LinuxLazyListActuals.kt

@@ -0,0 +1,22 @@
+/*
+ * Copyright 2026 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.compose.foundation.lazy
+
+import androidx.compose.runtime.Composable
+
+@Composable
+internal actual fun defaultLazyListBeyondBoundsItemCount(): Int = 0

compose/foundation/foundation/src/linuxMain/kotlin/androidx/compose/foundation/text/LinuxContextMenuActuals.kt

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2026 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.compose.foundation.text
+
+import androidx.compose.foundation.text.input.internal.selection.TextFieldSelectionState
+import androidx.compose.foundation.text.selection.SelectionManager
+import androidx.compose.foundation.text.selection.TextFieldSelectionManager
+import androidx.compose.runtime.Composable
+
+@Composable
+internal actual fun ContextMenuArea(
+    manager: TextFieldSelectionManager,
+    content: @Composable () -> Unit
+) = CommonContextMenuArea(manager, content)
+
+@Composable
+internal actual fun ContextMenuArea(
+    selectionState: TextFieldSelectionState,
+    enabled: Boolean,
+    content: @Composable () -> Unit
+) = CommonContextMenuArea(selectionState, enabled, content)
+
+@Composable
+internal actual fun ContextMenuArea(
+    manager: SelectionManager,
+    content: @Composable () -> Unit
+) = CommonContextMenuArea(manager, content)