g++ two versions?

Pasted by karlp on Sun May 16 20:42:38 2021 UTC as Text only
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Build dependency: Please install the GNU C++ Compiler (g++) 6 or later
Build dependency: \nPlease reinstall the GNU C++ Compiler (4.8 or later) - it appears to be broken
Build dependency: Please install ncurses. (Missing libncurses.so or ncurses.h)
Build dependency: Please install the Perl FindBin module
Build dependency: Please install the Perl File::Compare module
Build dependency: Please install the Perl Thread::Queue module
Build dependency: Please install GNU 'patch'
Build dependency: Please install 'which'