I was trying to compile qucs in my MacBook Pro today and got these two errors:
qucs_init.cpp: In member function ‘void QucsApp::initActions()’:
qucs_init.cpp:427: error: unknown escape sequence '\B'
qucs_init.cpp:429: error: unknown escape sequence '\B'
When I inspected the source code I thought they were just to create "degrees" signs, so I changed them to Unicode.