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Paul Eggert authored
* configure.ac (CFLAGS): Append -O if the user did not specify CFLAGS, we did not already infer an optimization option, and -O works. AIX xlc needs -O, otherwise garbage collection doesn't work. * src/lisp.h (ENUM_BF) [__IBMC__]: Make it 'unsigned int' here, too, to pacify AIX xlc. Fixes: debbugs:14258
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