How I install YAFU onto my Ubuntu Machines

[EdH]

Originally Posted by Plutie

I have tried with both make clean and fresh download. I set the GCC in the makefile to specifically gcc-7.

gcc-7 has a bunch of dependencies. I wonder if any of those are met by gcc-10 installed libraries.

The only other idea I can up with for now, would be a basic virtual machine install of Ubuntu 18.04, make YAFU in the VM and then copy it to the host. But, that would be a bit of work and somewhat time consuming to install all the packages.

[Plutie]

I actually tried doing that earlier, I'm getting missing symbol errors when running on my host though.


./yafu: symbol lookup error: ./yafu: undefined symbol: __gmpn_add_nc

[EdH]

Originally Posted by Plutie

I actually tried doing that earlier, I'm getting missing symbol errors when running on my host though.


./yafu: symbol lookup error: ./yafu: undefined symbol: __gmpn_add_nc

To my untrained eyes that looks like a GMP mismatch - Bummer! Maybe B² will come up with something else. But, it looks like there's a lot of work involved going the extern route.

Did you compile GMP or did you use the libgmp-dev from the repository?

[Plutie]

I used the same release of GMP on both host and VM. (6.2.0)

[Plutie]

late update: turns out I just needed to build it as a statically linked binary (added -static to CFLAGS). It's working fine now, so that's good.

[EdH]

Originally Posted by Plutie

late update: turns out I just needed to build it as a statically linked binary (added -static to CFLAGS). It's working fine now, so that's good.

Great to read! Thanks for keeping us apprised. I'll keep it in mind for the future. Not sure I'll add anything to the lead post right now, but maybe later.

[jcrombie]

Originally Posted by Gelly

Having an identical issue with multiple definition of <INSERT VARIABLE HERE>. Seems to have some relation to msieve, as yafu.h is fighting with "factor/qs/msieve/lanczos.o" and "factor/nfs/snfs.o"

I changed the gcc version to gcc-7 (7.5.0), gcc-8 (8.4.0), gcc-9 (9.3.0), and the default gcc on Ubuntu 20.10 (10.2.0 - nifty pattern haha), all to no avail. Even tried g++ (also 10.2.0), with no changes.

I would think this is likely to be a problem with msieve somehow, although I'm not certain. I followed EdH's tutorials to a tee in the past (thanks, ed!), with no issues (except siqs segfaulting, but that's whatever).

Now, suddenly, this is leaving me unable to get yafu up and at em on the newest version of Ubuntu. If you need any more info from me regarding this, I'm happy to oblige.

Just compiled the branches/wip in gcc 10.3. I've attach a patch file. (To patch, "cd branches/wip ; svn patch patchfile") Cheers.

[totmalone]

Hi, i trying to install yafu, but I get this error when I try to "tune" (image attached) I'm using WSL to try yafu first before I install it to my device... Any suggestion ?
https://imgur.com/a/rfNoJuu

[EdH]

Originally Posted by totmalone

Hi, i trying to install yafu, but I get this error when I try to "tune" (image attached) I'm using WSL to try yafu first before I install it to my device... Any suggestion ?

You might try YAFU2. It is the current version that is being actively worked on and it has its own thread that the author regularly watches. He can help with the inner workings of YAFU. And, he's much more familiar with WSL than I am.

I can help with most installation issues, but bsquared will need to help for deeper troubles.