使用 scala-native 构建 iOS 应用程序

Posted 2023-03-10

【中文标题】使用 scala-native 构建 iOS 应用程序

【英文标题】：Building an iOS application with scala-native

【发布时间】：2017-04-22 13:19:00

【问题描述】：

我正在尝试使用 scala-native 在 os x 上构建一个 ios 应用程序，并且在进行 sbt 构建时遇到了许多问题。欢迎任何有关如何操作的提示。

我设置build.sbt，使用Xcode目录存放iOS文件，如下：

    nativeCompileOptions := Seq("-v",  
    "-isysroot/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator10.3.sdk")

    nativeLinkingOptions := Seq("-v",
    "-I/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/include",
    "-L/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib",
    "-isysroot/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator10.3.sdk")

当对 nativelib 中包含的 c 文件（例如，wrap、time、dyndispatch、gc、posix、eh (c++)、unwind 和 target）进行初始编译时，我看不到添加选项的方法sbt 编译命令行。由于这些编译创建 .o 文件（不是 .ll），因此目标 一旦这些编译完成，平台就已经设置好了。 编译示例如下：

/Users/nnovod/tools/clang+llvm-4.0.0-x86_64-apple-darwin/bin/clang  
-I/usr/local/include  
-I/Users/nnovod/tools/clang+llvm-4.0.0-x86_64-apple-darwin/include  
-c  
/Users/nnovod/projects/scalaNative/target/scala-2.11/nativelib/posix.c  
-o
/Users/nnovod/projects/scalaNative/target/scala-2.11/nativelib/posix.c.o  

在编译 scala-native 代码时，我可以通过 nativeCompileOptions 添加选项并将 xcode 模拟器 sdk 目录添加为系统根目录 (-isysroot .../iPhoneSimulator.10.3.sdk) 似乎可以解决问题，尽管有关于“使用 x86_64-apple-ios10.3.0 覆盖模块目标三元组”的警告

链接时有两个问题：a）找不到 gc 库（我需要为 iOS 构建一个吗？Boehm 的交叉构建？） b）为 MacOS 完成的初始编译，现在与那些冲突为 iOS 完成。以下是 sbt 生成的链接命令：

"/usr/bin/ld" -demangle -lto_library /Users/nnovod/tools/clang+llvm-4.0.0-x86_64-apple-darwin/lib/libLTO.dylib -dynamic -arch x86_64 -ios_simulator_version_min 10.3.0 -syslibroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator10.3.sdk -o /Users/nnovod/projects/scalaNative/target/scala-2.11/scalanative-out -L/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib -lgc /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/__const.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/__dispatch.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/__empty.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/__extern.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/__instance.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/__main.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/example.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/java.io.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/java.lang.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/java.lang.reflect.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/java.nio.charset.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/java.nio.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/java.util.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/niocharset.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/scala.collection.generic.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/scala.collection.immutable.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/scala.collection.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/scala.collection.mutable.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/scala.collection.script.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/scala.compat.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/scala.io.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/scala.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/scala.math.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/scala.reflect.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/scala.runtime.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/scala.scalanative.native.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/scala.scalanative.runtime.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/scala.util.control.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/scala.util.hashing.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/ll/scala.util.ll.o /Users/nnovod/projects/scalaNative/target/scala-2.11/nativelib/dyndispatch.c.o /Users/nnovod/projects/scalaNative/target/scala-2.11/nativelib/eh.cpp.o /Users/nnovod/projects/scalaNative/target/scala-2.11/nativelib/gc.c.o /Users/nnovod/projects/scalaNative/target/scala-2.11/nativelib/posix.c.o /Users/nnovod/projects/scalaNative/target/scala-2.11/nativelib/time.c.o /Users/nnovod/projects/scalaNative/target/scala-2.11/nativelib/unwind.c.o /Users/nnovod/projects/scalaNative/target/scala-2.11/nativelib/wrap.c.o -lc++ -lSystem /Users/nnovod/tools/clang+llvm-4.0.0-x86_64-apple-darwin/bin/../lib/clang/4.0.0/lib/darwin/libclang_rt.ios.a

这一切都错了吗？我不是 sbt 专家，但我需要对 scala-native sbt 代码进行重大修改吗？

谢谢。

【问题讨论】：

你有没有解决过这个问题，还是放弃了？

【参考方案1】：

从 LLVM IR 的角度来看，这应该是可能的并且实际上几乎得到了支持（假设是豚鼠通过平滑粗糙边缘的调试而苦苦挣扎）。但是从让您可以从 Scala Native 调用的 Apple 框架的角度来看，您将无法从 Scala Native 中使用这些 Apple 框架，这意味着在使用 Scala Native其当前的生态系统是一种在 iPhone、iPad、Apple Watch、Apple TV 或 Mac 上编写 iOS/iPadOS/MacOS 应用程序的方式。