Error when trying to execute anything (libpq5 - 9.3.8-0ubuntu0.4.04 | Crystal 0.7.4) about crystal-pg HOT 9 CLOSED

Interesting. Do you know if it worked for you on crystal 0.7.3? 0.7.4 was just released today, so it could be a problem there.

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I re-enqueued the last travis build, it is running on 0.7.4 and it passed. So I don't think that there is a regression with the point release of crystal and this project.

I now think that maybe there are incompatible files left in the local .crystal cache directory by a previous version of crystal. Can you try deleting .crystal and trying again?

from crystal-pg.

Sure, I'll try it when I get home.

from crystal-pg.

I deleted the .crystal .deps and lib libraries and run the file again, same error.

I'm on Ubuntu 14.04 LTS it it helps, also this is the code I'm trying to run:

require "pg"

DB = PG.connect("postgres://postgres:postgres@localhost/some_db")
puts DB.version

from crystal-pg.

So on yours the linking is

-lpq -I`pg_config --includedir` -L`pg_config --libdir` -levent -lrt -lpcl -lpcre -lm -lgc -lpthread -lunwind`

on my os x it's

 -lpq -I`pg_config --includedir` -L`pg_config --libdir` -levent -lpcl -lpcre -lgc -lpthread

on @uhoh-itsmaciek 's ubuntu 15.04 he gets

-lpq -I`pg_config --includedir` -L`pg_config --libdir` -levent -lrt -lpcl -lpcre -lm -lgc -lpthread -lunwind

which is the same as yours, however on his machine it works.

I'm at a loss here. I looked up some things with that error, but I don't have much experience with linking problems like this :/

from crystal-pg.

No worries, I'll try tomorrow with a different computer, it's probably something local...

from crystal-pg.

It works on Ubuntu 14.10 64Bit, libpq5 9.4.4-0ubuntu0.14.10.

from crystal-pg.

I'm going to close this for now, but if you find out more details please share them. Thanks!

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So, @fdr and I tracked this down more, crystal-lang/crystal#1269

It explains why when the libdir isn't /usr/lib things work

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