First the commands:
wx-config --cflags --toolkit=gtk3
Code:
-I/usr/local/lib/wx/include/gtk3-unicode-static-3.1 -I/usr/local/include/wx-3.1 -D_FILE_OFFSET_BITS=64 -D__WXGTK__ -pthread
wx-config --libs --toolkit=gtk3
Code:
-L/usr/local/lib -pthread   /usr/local/lib/libwx_gtk3u_xrc-3.1.a /usr/local/lib/libwx_gtk3u_qa-3.1.a /usr/local/lib/libwx_baseu_net-3.1.a /usr/local/lib/libwx_gtk3u_html-3.1.a /usr/local/lib/libwx_gtk3u_core-3.1.a /usr/local/lib/libwx_baseu_xml-3.1.a /usr/local/lib/libwx_baseu-3.1.a -pthread -lgthread-2.0 -lX11 -lXxf86vm -lSM -lgtk-3 -lgdk-3 -lpangocairo-1.0 -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lXtst -lpangoft2-1.0 -lpango-1.0 -lgobject-2.0 -lglib-2.0 -lfontconfig -lfreetype -lwxtiff-3.1 -lwxjpeg-3.1 -lwxregexu-3.1 -lwxscintilla-3.1 -lexpat -lpng -lz -ldl -lm
Now the scrinshots.
Process terminated with status -11-screenshot-2020-06-22-17-01-38-jpg
Process terminated with status -11-screenshot-2020-06-22-17-03-12-jpg