如何在 Kotlin/Native 项目中使用较新的链接器和 glibc？

Question

我想在我的 Kotlin/Native 项目中使用 GLFW，因此我在

.def

:

 创建了一个 

src/nativeInterop/cinterop/glfw3.def

文件

headers = \
    glfw3.h \
    glfw3native.h
headerFilter = /usr/include/GLFW/*

compilerOpts.linux = \
    -I/usr/include \
    -I/usr/include/GLFW
linkerOpts.linux = \
    -L/usr/lib \
    -lc \
    -l:libglfw.so.3

并相应地更新了我的

build.gradle.kts

：

plugins {
    kotlin("multiplatform") version "1.9.23"
}

// -- snip --

kotlin {
    linuxX64("native").apply {
        val main by compilations.getting
        compilations.getByName("main") {

            cinterops {
                val glfw3 by creating {
                    defFile(project.file("src/nativeInterop/cinterop/glfw3.def"))
                    packageName("glfw3")
                }
            }
        }
        binaries {
            executable()
        }
    }

    sourceSets {
        val nativeMain by getting
        val nativeTest by getting
    }
}

但是当我尝试在 Arch Linux x86_64 系统上运行此程序时，出现以下错误：

> Task :linkDebugExecutableNative
e: /home/simao/.konan/dependencies/x86_64-unknown-linux-gnu-gcc-8.3.0-glibc-2.19-kernel-4.9-2/x86_64-unknown-linux-gnu/bin/ld.gold invocation reported errors

The /home/simao/.konan/dependencies/x86_64-unknown-linux-gnu-gcc-8.3.0-glibc-2.19-kernel-4.9-2/x86_64-unknown-linux-gnu/bin/ld.gold command returned non-zero exit code: 1.
output:
/usr/lib/libglfw.so.3: error: undefined reference to 'memfd_create', version 'GLIBC_2.27'
/usr/lib/libglfw.so.3: error: undefined reference to 'dlopen', version 'GLIBC_2.34'
/usr/lib/libglfw.so.3: error: undefined reference to 'pthread_key_delete', version 'GLIBC_2.34'
/usr/lib/libglfw.so.3: error: undefined reference to 'dlclose', version 'GLIBC_2.34'
/usr/lib/libglfw.so.3: error: undefined reference to 'powf', version 'GLIBC_2.27'
/usr/lib/libglfw.so.3: error: undefined reference to 'dlsym', version 'GLIBC_2.34'
/usr/lib/libglfw.so.3: error: undefined reference to 'pthread_setspecific', version 'GLIBC_2.34'
/usr/lib/libglfw.so.3: error: undefined reference to 'pthread_getspecific', version 'GLIBC_2.34'
/usr/lib/libglfw.so.3: error: undefined reference to 'pthread_key_create', version 'GLIBC_2.34'

> Task :linkDebugExecutableNative FAILED
4 actionable tasks: 2 executed, 2 up-to-date

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':linkDebugExecutableNative'.
> Compilation finished with errors

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.

BUILD FAILED in 3s
4:47:17 PM: Execution finished 'runDebugExecutableNative'.

更多日志：

/usr/lib/libmvec.so.1: error: undefined reference to 'exp10f', version 'GLIBC_2.32'
/usr/lib/libmvec.so.1: error: undefined reference to 'exp10', version 'GLIBC_2.39'
/usr/lib/libmvec.so.1: error: undefined reference to 'pow', version 'GLIBC_2.29'
/usr/lib/libmvec.so.1: error: undefined reference to 'powf', version 'GLIBC_2.27'
/usr/lib/libmvec.so.1: error: undefined reference to 'log2', version 'GLIBC_2.29'
/usr/lib/libmvec.so.1: error: undefined reference to 'log2f', version 'GLIBC_2.27'
/usr/lib/libmvec.so.1: error: undefined reference to 'logf', version 'GLIBC_2.27'
/usr/lib/libmvec.so.1: error: undefined reference to 'log', version 'GLIBC_2.29'
/usr/lib/libmvec.so.1: error: undefined reference to 'expf', version 'GLIBC_2.27'
/usr/lib/libmvec.so.1: error: undefined reference to 'exp', version 'GLIBC_2.29'
/usr/lib/libmvec.so.1: error: undefined reference to 'exp2f', version 'GLIBC_2.27'
/usr/lib/libmvec.so.1: error: undefined reference to 'exp2', version 'GLIBC_2.29'
/usr/lib/libmvec.so.1: error: undefined reference to 'hypot', version 'GLIBC_2.35'
/usr/lib/libmvec.so.1: error: undefined reference to 'hypotf', version 'GLIBC_2.35'

到目前为止，我的代码仅包含此内容：

fun main() {

}

看到这一点，它让我相信使用的工具链（

/home/simao/.konan/dependencies/x86_64-unknown-linux-gnu-gcc-8.3.0-glibc-2.19-kernel-4.9-2/x86_64-unknown-linux-gnu/

）太旧了，因为它的名称中写着

glibc-2.19

，但库 GLFW 使用的是 Glibc 2.27 和 Glibc 3.34 中的符号）。我也很乐意使用涉及静态链接 musl 的解决方案，只要它与 GLFW 配合良好即可。 我也不明白为什么 Kotlin/Native（或 konan）使用 GCC，而据说 Kotlin/Native 使用 LLVM。那么为什么不使用 Clang 来代替呢？

我想在这里做的是更新整个工具链，使用不同的工具链或仅更新 glibc，但不必使用类似

-l:/usr/lib/libc.so.6

之类的东西。 我该怎么做？

Answer 1

尝试使用 freeCompilerArgs += listOf("-linker-option", "--allow-shlib-undefined")

此标志强制链接器允许最终工件中存在未定义的符号。它之所以有效，是因为尽管新符号不存在于 Kotlin/Native sysroot 中，但它们在系统的 glibc 中可用，而后者实际上是在运行时使用的。当然，这会导致在低版本 glibc 的平台上崩溃。