Can't recognize libjq1 being installed on the system

[est31]

When I try to use this library, it doesn't seem to be able to recognize libqj1 installed on the system. Most likely because on my system it's called libjq1 not libjq.

[onelson]

Could you share the type of system you're on?

[onelson]

I can probably fake it by doing a docker build and just renaming the .so as a part of the build, but I'd rather know I've really fixed it for real.

[est31]

@onelson I'm using ubuntu. This is the list of files provided: https://packages.ubuntu.com/disco/amd64/libjq1/filelist

It's weird that pkg-config doesn't resolve the library correctly. My current guess it's the lib prefix.

[onelson]

Okay thanks. I'll take a closer look. All our builds tend to happen on debian, but I don't think we've ever tried it on ubuntu. I'll prep a dockerfile and see what's what.

[est31]

Hmm I think I found the reason: there is no /usr/lib/x86_64-linux-gnu/pkgconfig/jq.pc file. Other libraries like libogg-dev ship with a corresponding .pc file: https://packages.ubuntu.com/disco/amd64/libogg-dev/filelist

Not sure why such a file isn't included but this is certainly the distro's fault not the fault of this crate.

[onelson]

Ah. Well, in that case, I'll aim to document this in the readme. Certainly, there are other ubuntu users out there who may run into this.

Thanks for doing the legwork.

[est31]

@onelson you say it works in debian? That's weird, as it's lacking the file as well: https://packages.debian.org/stretch/amd64/libjq-dev/filelist vs https://packages.ubuntu.com/disco/amd64/libjq-dev/filelist

[onelson]

Yeah. We have only one service depending on this crate, but there are two docker builds, one for local dev (dynamic linking) and a multi-stage cross-builder (we link jq statically there and so build it from source).

The dynamic linking version (I'm checking the Dockerfile)... Yep.

RUN apt-get update \
    && apt-get install --no-install-recommends -y \
    libjq-dev libonig-dev libjq1 libonig4 \
    && rm -rf /var/lib/apt/lists/*

ENV JQ_LIB_DIR=/usr/lib/x86_64-linux-gnu

We set JQ_LIB_DIR to side-step pkg-config, I guess.

[SuperSandro2000]

jq/libjq has no pc file that why pkg-config will always fail.