undefined reference to `std::filesystem::absolute(std::filesystem::__cxx11::path const&)'

[Knindzagxg]

Current Behaviour

There are some weird issues while recompiling with Dashboard.
It was working fine, until i changed to clang 11.

For some unknown reason, during recompile, it wasn't able to find scripts in filesystems, even tho it's included in Updater.cpp

 undefined reference to `std::filesystem::absolute(std::filesystem::__cxx11::path const&)'

Except pastebin link bellow, i'm not sure what else to provide.

https://pastebin.com/df2r33ey

Expected Blizzlike Behaviour

Compile / Recompile should work.

Source

No response

Steps to reproduce the problem

1. Update your clang to 11 - Debian 10.
2. Try to compile / recompile trough Bash Dashboard.

Extra Notes

No response

AC rev. hash/commit

AzerothCore revision: 2e8a749+ 2021-07-10 17:18:23 +0200 (master branch)

Operating system

Debian 10 x64

Custom changes or Modules

No modules - Removed them.
Tried with clean build as well.

[FrancescoBorzi]

@Viste @UltraNix any clue about this?

[Krejza9]

this is boost problem
You must start compiling boost libraries first.

[Kitzunu]

Why would it be an issue with Boost? We dont use boost::filesystem, we use std::filesystem

[iraizo]

This is an issue because of the standard library from your system, its outdated and does not have the C++17 filesystem headers

[Viste]

ldd --version
and
lsof -p $$ | grep libstdc | awk ' { print $NF" --version"; } ' | sh
@iraizo is right i guess but need to check ;)

update

#!/bin/sh
echo "deb http://ftp.debian.org/debian sid main" >> /etc/apt/sources.list
apt-get update
apt-get -t sid install libc6 libc6-dev libc6-dbg libc++1 libc++1-11
echo "Please remember to hash out sid main from your sources list. /etc/apt/sources.list"

about last 2 packets i dont sure dont use debian(read like shit) for years

[FrancescoBorzi]

Thanks @Viste

@Knindzagxg installed gcc-10 and that apparently solved the issue for him. I guess we can close this

[iraizo]

Thanks @Viste

@Knindzagxg installed gcc-10 and that apparently solved the issue for him. I guess we can close this

Yep the gcc package automatically depends on the standard lib that also includes those.

[necropola]

Or just just add one line to fix the build on debian instead of installing an entire package which isn't even in debian stable (nor in backports):

diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt
index 7a2997089..2db021ce5 100644
--- a/src/common/CMakeLists.txt
+++ b/src/common/CMakeLists.txt
@@ -62,6 +62,7 @@ target_link_libraries(common
     openssl
     threads
     jemalloc
+    stdc++fs
     fmt)

 set_target_properties(common

Since gcc-10 is not even in buster-backports you would need to install it from unstable (sid) which is something you should avoid like the plague on debian. See https://wiki.debian.org/DontBreakDebian

Honestly, ditch debian and install ArchLinux instead is a more sensible suggestion than to encourage users to break their stable debian system.

Maybe the following helps to fix the build system:

• https://stackoverflow.com/questions/58545562/what-is-the-correct-way-to-link-c17-filesystem-with-cmake
• https://gitlab.kitware.com/cmake/cmake/-/issues/17834
• https://github.com/lethal-guitar/RigelEngine/blob/master/cmake/Modules/FindFilesystem.cmake

and in particular

• lethal-guitar/RigelEngine@cc9ad05#diff-69184b861b92077b0ba169875df97f53c172a40e4de8a495b3e960a6564e478d