Entry Point Not Found after Steam SDK integration

[wilk10]

I'm having trouble running my game after integrating the SteamSDK. I'm using bevy-steamworks, which wraps steamworks-rs.
I have added the steam_api64.dll next to my executable as mentioned in the Steamworks API documentation and steamworks-rs readme. When running the executable from my computer I get the error:

times_of_progress.exe - Entry Point Not Found

The procedure entry point SteamAPI_SteamApps_v008 could not be located in the dynamic link library C:\Users\<path>\times_of_progress.exe

From Steam it closes immediately.

On Linux nothing happens on double-click with a similar setup, just with the libsteam_api.so file next to the executable instead, of course.

I can run it from the terminal via cargo no problem.

This is the output of dumpbin on Windows:

PS C:\Users\anssa\Documents\gamedev\industry\builds\demo-0.4.2\windows> dumpbin /dependents .\times_of_progress.exe
Microsoft (R) COFF/PE Dumper Version 14.51.36244.0
Copyright (C) Microsoft Corporation.  All rights reserved.


Dump of file .\times_of_progress.exe

File Type: EXECUTABLE IMAGE

  Image has the following dependencies:

    kernel32.dll
    oleaut32.dll
    api-ms-win-core-synch-l1-2-0.dll
    bcryptprimitives.dll
    ole32.dll
    combase.dll
    shell32.dll
    bcrypt.dll
    advapi32.dll
    ws2_32.dll
    ntdll.dll
    crypt32.dll
    secur32.dll
    ADVAPI32.dll
    GDI32.dll
    KERNEL32.dll
    OPENGL32.dll
    USER32.dll
    uiautomationcore.dll
    imm32.dll
    d3dcompiler_47.dll
    dwmapi.dll
    uxtheme.dll
    steam_api64.dll
    VCRUNTIME140.dll
    api-ms-win-crt-string-l1-1-0.dll
    api-ms-win-crt-math-l1-1-0.dll
    api-ms-win-crt-runtime-l1-1-0.dll
    api-ms-win-crt-stdio-l1-1-0.dll
    api-ms-win-crt-locale-l1-1-0.dll
    api-ms-win-crt-heap-l1-1-0.dll

  Summary

       B2000 .data
      108000 .pdata
     9532000 .rdata
       9B000 .reloc
     3A82000 .text

This is the ouput of ldd on Linux:

anselmo@tuxedo-os:~$ ldd Documents/gamedev/times_of_progress/industry/exports/linux_steam/times_of_progress 
        linux-vdso.so.1 (0x000079d27f003000)
        libssl.so.3 => /lib/x86_64-linux-gnu/libssl.so.3 (0x000079d27ef31000)
        libcrypto.so.3 => /lib/x86_64-linux-gnu/libcrypto.so.3 (0x000079d270800000)
        libasound.so.2 => /lib/x86_64-linux-gnu/libasound.so.2 (0x000079d2706f6000)
        libsteam_api.so => /home/anselmo/Documents/gamedev/times_of_progress/industry/exports/linux_steam/libsteam_api.so (0x000079d27eee2000)
        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x000079d27eeb4000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x000079d270d17000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x000079d270400000)
        /lib64/ld-linux-x86-64.so.2 (0x000079d27f005000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x000079d2706f1000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x000079d2706ec000)

What else is needed for the linking to happen? Any help is appreciated. Thanks.

[cookesan]

That error usually means the process is loading a Steam API DLL that does not contain the interface version requested by the Rust binding, rather than a Bevy-specific problem.

Check these first:

1. The executable is 64-bit and is loading the 64-bit steam_api64.dll.
2. The DLL came from the same Steamworks SDK version expected by your steamworks-rs version.
3. There is not another steam_api64.dll earlier in the DLL search path.
4. The DLL is next to the built exe you are actually launching, not only in the project root.

A quick way to catch this is to search the whole project/build tree for duplicate steam_api64.dll, delete stale copies, then copy the redistributable DLL next to the final executable again.

After the DLL loads correctly, keep steam_appid.txt next to the exe for local testing.

[wilk10]

Thanks that was a good checklist. I did have the wrong version. The problem seemed to persist though. Then I implemented taking the file directly from steamworks-sys dependency inside target and it worked on Windows, both locally and from Steam, and on Linux locally, but not from Steam :(

I've marked it as answered because I don't know if the Linux issue is not the same or another. Thanks a lot for the help!