lr-mame: "makefile:1313: recipe for target 'linux' failed; make: *** [linux] Error 2"

[SuperFromND]

I'm trying to compile the current version of lr-mame on RetroPie 4.4, and I ended up running into this error:

Compiling src/mame/video/vindictr.cpp...
Compiling src/mame/video/wolfpack.cpp...
Compiling src/mame/video/xybots.cpp...
Archiving libatari.a...
makefile:1313: recipe for target 'linux' failed
make: *** [linux] Error 2
Removing additional swap
/home/pi
Could not successfully build lr-mame - MAME emulator - MAME (current) port for libretro (/home/pi/RetroPie-Setup/tmp/build/lr-mame/mamearcade_libretro.so not found).

Log ended at: Sat 20 Apr 00:04:38 UTC 2019
Total running time: 2 hours, 28 mins, 48 secs

There doesn't appear to be any clear reason as to what exactly caused the make target to fail; the line mentioned in the error is merely the line used to compile files, and Error 2 is a rather common error in make. Nobody else seems to have gotten this error message for lr-mame either.

This is being compiled on a Raspberry Pi 3, with a clean install of RetroPie 4.4, on a 32GB microSD.

Addendum: I'm currently attempting a second compile of lr-mame, and it managed to get past libatari.a, which makes me believe this was a one-time error.