_PC_PIPE_BUF 848 ext/etc/constdefs.h #if !defined(_PC_PIPE_BUF) _PC_PIPE_BUF 850 ext/etc/constdefs.h # define _PC_PIPE_BUF _PC_PIPE_BUF _PC_PIPE_BUF 1448 ext/etc/constdefs.h #if defined(_PC_PIPE_BUF) _PC_PIPE_BUF 1449 ext/etc/constdefs.h rb_define_const(mod, "PC_PIPE_BUF", INTEGER2NUM(_PC_PIPE_BUF));