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Mention -lcurses problem on AIX

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* etc/PROBLEMS: Describe problem with Emacs 27 and -lcurses.
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Paul Eggert 2021-01-03 12:32:27 -08:00
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etc/PROBLEMS
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@ -2879,6 +2879,19 @@ A solution is to link with GCC, like this:
Since the .o object files already exist, this will not recompile Emacs
with GCC, but just restart by trying again to link temacs.
*** Building Emacs with -lcurses fails with undefined symbols like BC.
The 'configure' script attempts to use several terminal libraries,
including tinfo, ncurses, and terminfo, and curses (in that order).
If it happens to choose the long-obsolete curses library, Emacs will
not link correctly. Emacs 28 is expected to work around this problem;
in the meantime you can work around it by installing tinfo, ncurses or
terminfo instead.
This problem can happen on AIX 7.2 if you build with IBM's compiler XLC,
as AIX's ncurses library suffers from the libgcc problem mentioned above.
To work around this, configure and build with GCC.
*** Sun with acc: Link failure when using acc on a Sun.
To use acc, you need additional options just before the libraries, such as