Mac GNU readline

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Mac では GNU readline の代わりに libedit がデフォルトになっているので、ビルドに失敗することがある

例えば gnubg (バックギャモン)

re/doc/gnubg"' -DAC_DATADIR='"/usr/local/share"' -DAC_PKGDATADIR='"/usr/local/share/gnubg"'  -g -O2 -DG_DISABLE_ASSERT  -MT gnubg.o -MD -MP -MF $depbase.Tpo -c -o gnubg.o gnubg.c &&\
	mv -f $depbase.Tpo $depbase.Po
gnubg.c:4287:38: error: use of undeclared identifier
      'rl_filename_quote_characters'; did you mean
      'rl_completer_quote_characters'?
    rl_basic_word_break_characters = rl_filename_quote_characters = szCo...
                                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
                                     rl_completer_quote_characters
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/include/readline/readline.h:110:15: note:
      'rl_completer_quote_characters' declared here
extern char             *rl_completer_quote_characters;
                         ^
gnubg.c:4290:34: warning: incompatible pointer types assigning to 'Function *'
      (aka 'int (*)(const char *, int)') from 'char *(const char *, int)'
      [-Wincompatible-pointer-types]
    rl_completion_entry_function = NullGenerator;
                                 ^ ~~~~~~~~~~~~~
1 warning and 1 error generated.
make[2]: *** [gnubg.o] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2

homebrew で readline をインストールして

./configure で readline のライブラリパスを指定すればいい

$ brew install readline
$ ./configure LIBS=-L/usr/local/opt/readline/lib CPPFLAGS=-I/usr/local/opt/readline/include
$ make install

Mac

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