Cannot compile on Ubuntu 18.04 LTS

[ShantySuffisance]

It seams like this issue differs from #32 and #24.

I am on Ubuntu 18.04.6 LTS x86_64 and try to get VST3 and LV2. I create the Makefile via Projucer from JUCE v7.0.1.

The compilation stops with errors:

../../Source/PluginProcessor.cpp:440:27: error: ‘showMessageBox’ is not a member of ‘juce::NativeMessageBox’ ../../Source/PluginProcessor.cpp:563:21: error: ‘showMessageBox’ is not a member of ‘juce::NativeMessageBox’

How can i solve this issue? Thank you all for that great synth!