# Steam-run: game tries to open wrong libstdc++.so.6
**URL:** https://discourse.nixos.org/t/steam-run-game-tries-to-open-wrong-libstdc-so-6/11465
**Category:** Help
**Created:** [February 9, 2021, 8:10pm UTC](https://discourse.nixos.org/t/steam-run-game-tries-to-open-wrong-libstdc-so-6/11465 "2021-02-09T20:10:32Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@davidak](https://discourse.nixos.org/u/davidak)
#### Post date: [February 9, 2021, 8:10pm UTC](https://discourse.nixos.org/t/steam-run-game-tries-to-open-wrong-libstdc-so-6/11465/1 "2021-02-09T20:10:32Z")
I tried to run the game [Unvanquished](https://unvanquished.net/) with steam-run, but it fails with this error:
```auto
steam-run ./UnvanquishedUpdater
...
.../nacl_loader: error while loading shared libraries: libstdc++.so.6: cannot open shared object file: No such file or directory
Warn: Error during initialization: IPC: Socket closed by remote end
```
When i run it with strace, i get the path of the `libstdc++.so.6` it tries to open:
```auto
steam-run strace -ff ./UnvanquishedUpdater
...
[pid 75] openat(AT_FDCWD, "/nix/store/q53f5birhik4dxg3q3r2g5f324n7r5mc-glibc-2.31-74/lib/libstdc++.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid 75] writev(2, [{iov_base="/home/davidak/.local/share/unvan"..., iov_len=56}, {iov_base=": ", iov_len=2}, {iov_base="error while loading shared libra"..., iov_len=36}, {iov_base=": ", iov_len=2}, {iov_base="libstdc++.so.6", iov_len=14}, {iov_base=": ", iov_len=2}, {iov_base="cannot open shared object file", iov_len=30}, {iov_base=": ", iov_len=2}, {iov_base="No such file or directory", iov_len=25}, {iov_base="\n", iov_len=1}], 10/home/davidak/.local/share/unvanquished/base/nacl_loader: error while loading shared libraries: libstdc++.so.6: cannot open shared object file: No such file or directory
```
before this failure, it successfully opens the library from `/lib64/libstdc++.so.6` which is a symlink to `/nix/store/g490crrmig6ffbjk5qxd5siavypng6ld-gcc-9.3.0-lib/lib/libstdc++.so.6` which does exist
So, why does the game tries to use `libstdc++.so.6` from glibc package (that does not exist) instead of gcc?
* * *
I use NixOS 20.09.3009.8e78c2cfbae and this workaround, so the game starts at all:
```auto
# add additional dependencies to steam-run
nixpkgs.overlays = [
(self: super: {
steam-run = (super.steam.override {
extraLibraries = pkgs: with pkgs;
[
libxkbcommon # workaround for Unvanquished
];
}).run;
})
];
```
I tried adding libstdcxx5, gcc, glibc, stdenv.cc.cc.lib there without success.
Related issue with more details: [Provided linux build reported to not work on NixOS · Issue #1302 · Unvanquished/Unvanquished · GitHub](https://github.com/Unvanquished/Unvanquished/issues/1302)
---
### Author:  [@jonringer](https://discourse.nixos.org/u/jonringer)
#### Post date: [February 9, 2021, 9:24pm UTC](https://discourse.nixos.org/t/steam-run-game-tries-to-open-wrong-libstdc-so-6/11465/2 "2021-02-09T21:24:45Z")
do you mind trying `stream-run` from unstable?
---
### Author:  [@davidak](https://discourse.nixos.org/u/davidak)
#### Post date: [February 9, 2021, 10:49pm UTC](https://discourse.nixos.org/t/steam-run-game-tries-to-open-wrong-libstdc-so-6/11465/3 "2021-02-09T22:49:20Z")
no. it wasn’t straight forward
and it didn’t change the behavior
one difference is that strace don’t work anymore 😃
```auto
[davidak@gaming:~/Downloads]$ steam-run strace -ff ./UnvanquishedUpdater
strace: symbol lookup error: /lib64/libc.so.6: undefined symbol: _dl_fatal_printf, version GLIBC_PRIVATE
```
---
### Author:  [@jonringer](https://discourse.nixos.org/u/jonringer)
#### Post date: [February 9, 2021, 11:16pm UTC](https://discourse.nixos.org/t/steam-run-game-tries-to-open-wrong-libstdc-so-6/11465/4 "2021-02-09T23:16:43Z")
On master, I was able to launch it with `steam-run-native`. Which doesn’t use the steam scout runtime.
EDIT: I was able to do the launcher, the game crashes with your original error.
It might just be easier to package the game [Compiling the source - Unvanquished](https://wiki.unvanquished.net/wiki/Compiling_the_source#Linux)
---
### Author:  [@davidak](https://discourse.nixos.org/u/davidak)
#### Post date: [February 9, 2021, 11:31pm UTC](https://discourse.nixos.org/t/steam-run-game-tries-to-open-wrong-libstdc-so-6/11465/5 "2021-02-09T23:31:50Z")
Yeah, the Launcher/Updater works, downloading the game works, but starting it don’t.
Packaging it would be the proper solution, but i don’t know yet if it’s worth it. I would like to try it out first.
Maybe i have to use a different Linux distro for that.