c++ - 无法将 IOKit 驱动程序链接到 IOHIDFamily : "dependency load failed"

Question

我正在开发一个从 IOHIDFamily 扩展的 macOS IOKit 内核驱动程序，但 xcode 给我链接错误，例如:

Allocating an object of abstract class type 'IOHIDDevice'

kextload 给我错误:

(libkern/kext) dependency load failed; check the system/kernel logs for errors or try kextutil(8).

我如何才能正确链接到 IOHIDFamily 以修复这些错误，以便我可以创建继承自 IOHIDFamily 类的类，例如 IOHIDDevice？

我已经将其添加到我的 Info.plist 中:

    <key>OSBundleLibraries</key>
    <dict>
        <key>com.apple.iokit.IOHIDFamily</key>
        <string>2.0</string>
        <key>com.apple.kpi.iokit</key>
        <string>17.7</string>
        <key>com.apple.kpi.libkern</key>
        <string>17.7</string>
        <key>com.apple.kpi.mach</key>
        <string>17.7</string>
    </dict>

这些是来自 kextload 的系统/内核日志:

Resetting IOCatalogue.
MacOS error: -67062
Kext with invalid signatured (-67062) allowed: <OSKext 0x7f99b7bf47c0 [0x7fff83ef4af0]> { URL = "file:///tmp/IOHIDTest.kext/", ID = "org.muirey03.driver.IOHIDTest" }
/tmp/IOHIDTest.kext is invalid; can't resolve dependencies.
org.muirey03.driver.IOHIDTest's dependencies failed security checks; failing.

如有任何帮助，我们将不胜感激。

Answer 1

原来这个问题根本与链接无关。我没有在我的 IOHIDDevice 子类上定义纯虚方法 newReportDescriptor，这使我的子类成为无法分配的抽象类。