I can't compile on Ubuntu 20.04 about twin HOT 6 CLOSED

I'm on Debian 11 and I had the same problem, after installing the dependencies listed in the Twin readme.

When I started trying to track it down, grep revealed that dlerror() is only called once. I commented out line 44 of libs/libtstl/err.cpp and that allowed me to compile. I have Twin running apparently ok at the moment, but I'll chime in again if I can figure out how to actually fix the problem.

Edit: I've never had to use ldconfig before. I ran sudo ldconfig between configure and make, but maybe I need to pass it some arguments? Not sure what I'm doing here. Researching.

Edit 2: Ok, so after some searching, I found dlfcn.h in my /usr/include directory. I added /usr/include to my /etc/ld.so.conf.d/libc.conf, re-ran sudo ldconfig, then recompiled and now it works without the reference to dlerror commented out. I don't know if this is the correct solution, maybe someone more knowledgeable can comment, but it worked for me.

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That is very odd as it is compiling just fine on Ubuntu 22.04.

Do you have all the dependencies installed? the development dependencies.

The last time i ran into an error like that i was missing a devel or dev package. So my suggestion would be to recheck your installed dependencies or figure out what package provides libstl.

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@rogersavage

Thanks for your troubleshooting! FWIW, I found that commenting out that line allowed compilation, but the changes to libc.conf did not not help, though I do have dlfcn.h in the place you noted.

Tried on 2 computers -- both Debian 11.6, one i386 one AMD64. Exactly the same problems on both. Happy to have it working!

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It looks like library libdl is missing during linking.
I will fix it ASAP.

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Commit b6e4e4b should fix this issue.

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Happy to report vanilla build worked out of the box. Thanks so much!

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