Gradle 和 Cmake 无法找到绝对存在的 cpp 文件

Posted 2023-02-22

【中文标题】Gradle 和 Cmake 无法找到绝对存在的 cpp 文件

【英文标题】：Gradle and Cmake failing to find cpp file that is definitely there

【发布时间】：2020-05-21 22:39:31

【问题描述】：

我运行 gradle 来构建一个 android .aar，它报告它找不到文件，但文件肯定在那里。

$ ./gradlew.bat assembleRelease

> Task :webrtc-native:externalNativeBuildRelease FAILED
Build mrwebrtc arm64-v8a
ninja: error: 'C:/Developer/Microsoft-MRWebRTC/libs/mrwebrtc/src/interop/data_channel_interop.cpp', needed by 'CMakeFiles/mrwebrtc.dir/C_/Developer/Microsoft-MRWebRTC/libs/mrwebrtc/src/interop/data_channel_interop.cpp.o', missing and no known rule to make it

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':webrtc-native:externalNativeBuildRelease'.
> Build command failed.
  Error while executing process C:\Users\User\AppData\Local\Android\Sdk\cmake\3.10.2.4988404\bin\cmake.exe with arguments --build C:\Developer\Microsoft-MRWebRTC\tools\build\android\webrtc-native\.externalNativeBuild\cmake\release\arm64-v8a --target mrwebrtc
  ninja: error: 'C:/Developer/Microsoft-MRWebRTC/libs/mrwebrtc/src/interop/data_channel_interop.cpp', needed by 'CMakeFiles/mrwebrtc.dir/C_/Developer/Microsoft-MRWebRTC/libs/mrwebrtc/src/interop/data_channel_interop.cpp.o', missing and no known rule to make it

但是文件C:/Developer/Microsoft-MRWebRTC/libs/mrwebrtc/src/interop/data_channel_interop.cpp肯定存在。

$ cd C:/Developer/Microsoft-MRWebRTC/libs/mrwebrtc/src/interop/

User MSYS /c/Developer/Microsoft-MRWebRTC/libs/mrwebrtc/src/interop (master)
$ ls
data_channel_interop.cpp                 global_factory.cpp  interop_api.cpp                local_video_track_interop.cpp  remote_audio_track_interop.cpp  transceiver_interop.cpp
external_video_track_source_interop.cpp  global_factory.h    local_audio_track_interop.cpp  peer_connection_interop.cpp    remote_video_track_interop.cpp

有人可以帮忙吗？我有点想不通了。

【问题讨论】：

Windows 路径（\ 作为分隔符）和 Unix 路径（/ 作为分隔符）看起来有些混乱。

【参考方案1】：

我发现这是因为我在某些目录上启用了“caseSensitive”标志。请注意，这是 WSL2 的一项新功能，并且您可能会在没有意识到的情况下启用一些特殊功能。 Windows cmake 无法遍历启用了此标志的目录。

在此处阅读： https://devblogs.microsoft.com/commandline/per-directory-case-sensitivity-and-wsl/