Installation Issue

[mominbuet]

When I was trying to make HElib ti stuck on:

CModulus.cpp: In member function ‘void Cmodulus::FFT(NTL::vec_long&, const NTL::ZZX&, long int) const’: CModulus.cpp:200:5: error: ‘PreconditionedRemainder’ was not declared in this scope PreconditionedRemainder prem(zz_p::modulus(), sz); ^ CModulus.cpp:204:44: error: ‘prem’ was not declared in this scope tmp.rep[i].LoopHole() = prem(x.rep[i]); ^ Makefile:91: recipe for target 'CModulus.o' failed make[1]: * [CModulus.o] Error 1 make[1]: Leaving directory '/home/user/Desktop/hbc/HElib/src' makefile:59: recipe for target 'HElib' failed make: * [HElib] Error 2

I previously installed HElib and did not see this error.

[qdm12]

Hi momimbuet, thanks for letting me know. This is a modification added 19 days ago on HElib and may be the cause, I'll look into it in a few hours. What's your platform?

[mominbuet]

Ubuntu, I think I resolved it with a c++ library, have to check. Was working on something else.

I am using a fresh ubuntu along with the recommended libraries.

[qdm12]

Alright great! I'll try to fix that makefile when I get back. I'll let you know what was wrong.

[mominbuet]

Thanks

[qdm12]

Hello again,

I believe the error was due to the NTL libary being outdated (9.6.2) for the latest updates of HElib. The makefile has now the version 9.9.1, I'm still testing but it should work now. Sorry for the inconvenience! And thanks for letting me know :+1:

[mominbuet]

I installed NTL seperately and thats why it worked. Thanks

[mominbuet]

There is another problem though, in line 145 in the makefile (./HEapp) it shows this error:

======================================
Segmentation fault (core dumped)

HElib is installed correctly.

[qdm12]

Alright so the project's code compiled and the program failed. Maybe try make HE -B and see what happens? I'm on a trip but I'm recompiling everything to check if the error occurs here as well, I'll let you know.

[mominbuet]

Same error actually:

Building HEapp...
g++ objects/*.o HElib/src/fhe.a -o HEapp -L/usr/local/lib -lntl -lgmp -lm
./HEapp
======================================
makefile:145: recipe for target 'HE' failed
make: *** [HE] Segmentation fault (core dumped)

[qdm12]

Alright sorry to hear that. I am desperately trying to setup HElib on my windows 7 laptop but it won't work because of some NTL related issues. I am coming back Wednesday so I'll fix it and let you know on Wednesday. You may also comment out some function calls in the main.cpp source file. The error could be from the first unit test which is TEST_LOGIC_GATES.

[mominbuet]

have fun, no rush. I have time on this one

[BlackPerles]

Hello, I have the same problem as you. I think it comes when i using the KeyGen. I would say it is a Helib problem, specifically with the use of c ++ 11. But I 'm not sure, just a suggestion.

[qdm12]

Ok one thing i am certain is that this comes since an update some 20 days ago by Victor Shoup on HElib. Now HElib requires a newer version of NTL (more than 9.6.2) and its keygen method could had changed since then. If you're in a hurry you can probably use the version of HElib prior to that update, or I'll fix it on Wednesday the latest. I'll let you know & thanks for the support!

[mominbuet]

Seems like that, previously I added -std=c++11 on HElib. Now its working fine. Just add this on g++ commands on makefile.

[qdm12]

Hi there, just to let you know, I have re-worked the project by adding support for Vagrant, added more doc etc so it should be way more fun to tweak the code now. Good luck ! And thanks again for that std=c++11 !!