Problem: pkg-config file cannot be used for static linking, missing dependencies in packaging

[bluca]

Solution: add Requires.private which gets recursively expanded by applications to pkg-config

[scpeters]

@bluca I'm having trouble finding zeromq on macOS since this has been released into homebrew-core, and there doesn't seem to be a libunwind.pc

• zeromq 4.3.1 Homebrew/homebrew-core#35940 (comment)

[EricLambrecht]

I have the same problem. I can't install any npm package that requires zeromq at the moment, which is kinda problematic.

[bluca]

Which dependency is missing?

[EricLambrecht]

@bluca we have an internal package in the company that uses "zeromq" and it can't be installed, because during installation (via npm/yarn), the build process fails because of this.

[bluca]

Again, which dependency is missing?

[EricLambrecht]

I don't know what kind of dependency you mean right now(?). During the build? Or in npm? On my machine?

The errors I get are various:

../binding.cc:28:10: fatal error: 'zmq.h' file not found
#include <zmq.h>
         ^~~~~~~
1 error generated.

if I don't install zeromq via Homebrew.

clang: error: no such file or directory: './Release/../../zmq/lib/libzmq.a' afterwards.

I also get this warning

WARNING: 'aclocal-1.14' is missing on your system.
         You should only need it if you modified 'acinclude.m4' or
         'configure.ac' or m4 files included by 'configure.ac'.
         The 'aclocal' program is part of the GNU Automake package:
         <http://www.gnu.org/software/automake>
         It also requires GNU Autoconf, GNU m4 and Perl in order to run:
         <http://www.gnu.org/software/autoconf>
         <http://www.gnu.org/software/m4/>
         <http://www.perl.org/>

but I have aclocal-1.16 installed, and after some research that doesn't seem to be the problem.

[bluca]

That's not a full log, what exactly is the problem with the header?

[EricLambrecht]

Full log is too long for this comment section. I created a gist: https://gist.github.com/EricLambrecht/7b7e5ec7dcaae3020a45d0ad4c13cf42

[bluca]

Autotools dependencies are missing on your system - specifically aclocal, which on Linux is usually installed via automake

[EricLambrecht]

@bluca But I have aclocal-1.16 according to aclocal --version.

I could also pin the error down a little bit more. I don't get the error when I install it globally. It only happens when I try to install zeromq locally! The Warning regarding aclocal doesn't appear when I install it globally, too.

Any idea why it can't be found during a local npm install, but can be found when installing globally?

[bluca]

As you can see from the log, for whatever reason it's looking for aclocal-1.14, not 1.16. Note that this has nothing to do with libzmq at all, it's purely and exclusively an issue with the autotools setup on the machine you are running this from.

[EricLambrecht]

Okay just for documentation purposes. It seemed to be related to my external hard drive (or rather the path). When I created the project on my internal SSD, the problem was gone!