Failing to build "DSO missing from command line"

[PureTryOut]

I've been having this error for a few weeks, but today I decided I had enough of it.
When trying to build the development build of Dolphin, I get an error

Code:

DSO missing from command line

According to make it's around 91% done when it happens. Some Googling tells me i'm missing some libraries, but i'm not sure which. Also, I prefer building via the AUR (since I use Arch Linux) so i'm not sure how I would even add the libraries that way.

[ilikedolphins]

Have you made sure to complete the step 1 relevant for you at https://wiki.dolphin-emu.org/index.php?title=Building_Dolphin_on_Linux?

[PureTryOut]

I guess so. It installs all the dependency's listed with the AUR package. Do note that before a reinstall a few weeks ago I was able to build fine, using the same package with the same installed dependency's.
I can also install and run the latest stable (4.0.2) build fine (I do not have to compile these myself), but of course I want the development builds instead.
Just for reference, this is the package I'm installing Dolphin with.

[PureTryOut]

Noticed it also spit out an error about something related to libiconv. Installed it from AUR and now it builds correctly.
Still not sure why it's building fine without this package on my laptop though...