With last tip:
commit 428260a6fdf274c8f1721d61deda079110a3fa2b
The Projucer fails to build on Ubuntu 20.04.03 LTS.
jojo@jojo-T430:~/JUCE/extras/Projucer/Builds/LinuxMakefile$ ls
build Makefile
jojo@jojo-T430:~/JUCE/extras/Projucer/Builds/LinuxMakefile$ make
make: *** No rule to make target '../../../../modules/juce_gui_extra/embedding/juce_ScopedDPIAwarenessDisabler.h', needed by 'build/intermediate/Debug/jucer_NewProjectWizard_7817a7e4.o'. Stop.
