Just add opt-ins where needed

Author: lauzadis

runtime/runtime-core/build.gradle.kts

@@ -6,6 +6,7 @@
 import aws.sdk.kotlin.gradle.kmp.NATIVE_ENABLED
 import aws.sdk.kotlin.gradle.util.typedProp
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeTarget
+import org.jetbrains.kotlin.gradle.tasks.KotlinNativeCompile
 import org.jetbrains.kotlin.konan.target.HostManager
 import java.nio.file.Files
 import java.nio.file.Paths
@@ -36,8 +37,6 @@ kotlin {
                 api(libs.crt.kotlin)
                 implementation(libs.kotlin.multiplatform.bignum)
             }
-            languageSettings.optIn("kotlinx.cinterop.ExperimentalForeignApi")
-            languageSettings.optIn("kotlin.RequiresOptIn")
         }
 
         commonTest {

runtime/runtime-core/native/src/aws/smithy/kotlin/runtime/compression/GzipCompressor.kt

@@ -16,6 +16,7 @@ private const val MEM_LEVEL = 8 // Default memory level
 /**
  * Streaming-style gzip compressor, implemented using zlib bindings
  */
+@OptIn(ExperimentalForeignApi::class)
 internal class GzipCompressor : Closeable {
     companion object {
         internal const val BUFFER_SIZE = 16384

runtime/runtime-core/native/src/aws/smithy/kotlin/runtime/compression/GzipTestUtilsNative.kt

@@ -5,6 +5,7 @@
 package aws.smithy.kotlin.runtime.compression
 
 import aws.smithy.kotlin.runtime.InternalApi
+import kotlinx.cinterop.ExperimentalForeignApi
 import kotlinx.cinterop.addressOf
 import kotlinx.cinterop.alloc
 import kotlinx.cinterop.memScoped
@@ -18,6 +19,7 @@ import platform.zlib.*
 /**
  * Decompresses a byte array compressed using the gzip format
  */
+@OptIn(ExperimentalForeignApi::class)
 @InternalApi
 public actual fun decompressGzipBytes(bytes: ByteArray): ByteArray {
     if (bytes.isEmpty()) {

runtime/runtime-core/native/src/aws/smithy/kotlin/runtime/util/SystemDefaultProviderBase.kt

@@ -10,6 +10,7 @@ import kotlinx.cinterop.*
 import kotlinx.coroutines.withContext
 import platform.posix.*
 
+@OptIn(ExperimentalForeignApi::class)
 public abstract class SystemDefaultProviderBase : PlatformProvider {
     override fun getenv(key: String): String? = platform.posix.getenv(key)?.toKString()
 

runtime/runtime-core/posix/src/aws/smithy/kotlin/runtime/net/DefaultHostResolverPosix.kt

@@ -7,6 +7,7 @@ package aws.smithy.kotlin.runtime.net
 import kotlinx.cinterop.*
 import platform.posix.*
 
+@OptIn(UnsafeNumber::class, ExperimentalForeignApi::class)
 internal actual object DefaultHostResolver : HostResolver {
     actual override suspend fun resolve(hostname: String): List<HostAddress> = memScoped {
         val hints = alloc<addrinfo>().apply {
@@ -31,7 +32,6 @@ internal actual object DefaultHostResolver : HostResolver {
         }
     }
 
-    @OptIn(UnsafeNumber::class)
     private fun sockaddr.toIpAddr(): IpAddr {
         val (size, addrPtr, constructor) = when (sa_family.toInt()) {
             AF_INET -> Triple(

runtime/runtime-core/posix/src/aws/smithy/kotlin/runtime/util/SystemDefaultProviderPosix.kt

@@ -9,6 +9,7 @@ import kotlinx.cinterop.*
 import platform.posix.uname
 import platform.posix.utsname
 
+@OptIn(ExperimentalForeignApi::class)
 public actual object SystemDefaultProvider : SystemDefaultProviderBase() {
     actual override val filePathSeparator: String = "/"