RustBackendLoader: "Can't find dependent libraries" - libgcc_s_seh-1.dll

[david-allison]

Currently the dll to test Anki-Android-Backend under robolectric on Windows links to libgcc_s_seh-1.dll

This means that developers must install GCC to unit test Anki-Android.

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ankidroid/Anki-Android#8345 (comment)

The error I am getting

[david-allison]

Trimmed dumpbin output

C:\Users\David\Downloads>dumpbin /dependents rsdroid1625960893423553494.dll
Dump of file rsdroid1625960893423553494.dll

File Type: DLL

  Image has the following dependencies:

    ole32.dll
    SHELL32.dll
    ADVAPI32.dll
    libgcc_s_seh-1.dll
    KERNEL32.dll
    msvcrt.dll
    USERENV.dll
    WS2_32.dll
C:\Users\David\Downloads>

[david-allison]

User comment:

I checked my temp directory it doesn't exist.

[david-allison]

For testing:

david@Auxiliary:/mnt/c/Users/David/Downloads/Anki/rsd$ objdump --private-headers rsdroid1625960893423553494.dll  | grep "DLL Name:"
        DLL Name: ole32.dll
        DLL Name: SHELL32.dll
        DLL Name: ADVAPI32.dll
        DLL Name: libgcc_s_seh-1.dll
        DLL Name: KERNEL32.dll
        DLL Name: msvcrt.dll
        DLL Name: USERENV.dll

[david-allison]

Was suggested to try -Ctarget-feature=+crt-static

[david-allison]

Failing test: https://github.com/david-allison-1/Anki-Android-Backend/runs/2272403365?check_suite_focus=true

[Starkly]

Just to note, libgcc_s_seh-1.dll has a dependency on libwinpthread-1.dll

if both are in your PATH, then the library will load and the tests should run ok, without installing all of gcc

[mikehardy]

Hey, I reproduce this now! Reproduction is half the battle. I hadn't tried to run it on windows yet but .\gradlew.bat jacocoUnitTestReport on a clean windows checkout did show this error for me

At some point I can play around with this at the same time as I attempt work on ankidroid/Anki-Android#10538 (comment)

[mikehardy]

Everyone should use a package manager, and on windows I use chocolatey, install it like so https://chocolatey.org/install#install-step2

Then:

choco install mingw

And now the DLLs should be on PATH after a shell restart, you can investigate in a new powershell with this:

($env:Path).split(';')

...and you should see this:

C:\ProgramData\chocolatey\lib\mingw\tools\install\mingw64\bin

Still want to investigate bundling those dlls somehow or doing the static link flag referenced above