The shell window confirms I have installed all required packages via dnf...
sudo dnf groupinstall --assumeyes "Development Tools"
Last metadata expiration check: 0:33:21 ago on Fri 06 Dec 2019 07:45:42 PM CST.
Dependencies resolved.
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Package Architecture Version Repository Size
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Installing Groups:
Development Tools
Transaction Summary
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Complete!
sudo dnf install mpg123-devel mesa-libGL-devel openal-devel libsndfile-devel gcc-c++ redhat-rpm-config SDL2-devel
Last metadata expiration check: 0:33:51 ago on Fri 06 Dec 2019 07:45:42 PM CST.
Package mpg123-devel-1.25.12-1.fc31.x86_64 is already installed.
Package mesa-libGL-devel-19.2.6-1.fc31.x86_64 is already installed.
Package openal-soft-devel-1.19.1-3.fc31.x86_64 is already installed.
Package libsndfile-devel-1.0.28-11.fc31.x86_64 is already installed.
Package gcc-c++-9.2.1-1.fc31.x86_64 is already installed.
Package redhat-rpm-config-142-1.fc31.noarch is already installed.
Package SDL2-devel-2.0.10-1.fc31.x86_64 is already installed.
Dependencies resolved.
Nothing to do.
Complete!
The Error Log Itself... I think...
https://pastebin.com/x4m74tss