Cannot build due to libboost library linking

[JacobMackay]

Trying to build gives this issue and I can't solve it
/usr/bin/ld: cannot find -lBoost::regex

[vlaskine]

which boost version are you using? are you on ubuntu?

[vlaskine]

also, do you have comma built and installed?

[JacobMackay]

Hi Vlad, I've tried boost 1.71.0 and 1.62.0, and yes on ubuntu.
Comma is built and installed. Should it be built with zmq on? ( This can now be installed using sudo apt install libzmq3-dev). This also causes issues with comma build.

[vlaskine]

i have not tried boost 1.71, but 1.62 should build with no problem
(snark does not depend on the zmq part of comma)
i would recommend:

• check whether you have on ONE boost installed (check both /usr/include/boost and /usr/local/include/boost to make sure
• if two versions of boost are installed, i would recommend to remove them both from include and lib and reinstall boost using apt-get install
• remove everything in your snark repository and run cmake and build from scratch

since you are in ACFR, you could ask someone who already has comma/snark installed for help (i am not with ACFR anymore and don't maintain their version of comma/snark)

[david-jennings]

Ubuntu which version? I'm curious how you've got versions 1.71 and 1.62 installed. Also, try: $ dpkg -l libboost-regex-dev Dave.

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On 21/4/20 10:34 pm, vlaskine wrote: i have not tried boost 1.71, but 1.62 should build with no problem (snark does not depend on the zmq part of comma) i would recommend: * check whether you have on ONE boost installed (check both /usr/include/boost and /usr/local/include/boost to make sure * if two versions of boost are installed, i would recommend to remove them both from include and lib and reinstall boost using apt-get install * remove everything in your snark repository and run cmake and build from scratch since you are in ACFR, you could ask someone who already has comma/snark installed for help (i am not with ACFR anymore and don't maintain their version of comma/snark) — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#131 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACFAXKRQYWCMRVEH5XOXFNDRNWHEFANCNFSM4MNFRNGQ>.

[JacobMackay]

I don't have them simultaneously, just tried both. Using 1.71 now.

I fixed it with a dirty hack:
sudo ln -s /usr/lib/x86_64-linux-gnu/libboost_regex.so /usr/lib/x86_64-linux-gnu/libBoost::regex.so

[JacobMackay]

I think cmake was looking for capitalB Boost...

[david-jennings]

I'd be a bit surprised if that's normally necessary, that's why I was curious about which version of Ubuntu and how boost was installed. You should be able to just install libboost-all-dev.

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On 21/4/20 10:55 pm, JacobMackay wrote: I don't have them simultaneously, just tried both. Using 1.71 now. I fixed it with a dirty hack: sudo ln -s /usr/lib/x86_64-linux-gnu/libboost_regex.so /usr/lib/x86_64-linux-gnu/libBoost::regex.so — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#131 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACFAXKSOXSDPU6XJTUWMMV3RNWJVVANCNFSM4MNFRNGQ>.

[JacobMackay]

I was confused which to install from all the documentation. But libboost-all-dev installs with no problems, but this just didn't build properly until the dodgy symlink.
I'm currently on 20.04, but I'm not sure if that's the cause as cmake was looking for lBoost::regex.so rather than libboost_regex.so

[david-jennings]

Final question: which application was building when you got the linking error?

[david-jennings]

There's an unmerged PR that should fix this issue at e195dd3.

The patch looks reasonable but I haven't seen the issue which is why I'd like to know how to replicate.

[vlaskine]

thanks, Dave, i added regex to orthographic/snark (just typed by hand, no merging), although boost regex never has been a problem in orthographic/snark anyway

i cannot comment on anything in acfr/snark