HAVE_FIFO_PIPES    76 maint/gnulib/lib/isapipe.c   bool check_for_fifo = (HAVE_FIFO_PIPES == 1);
HAVE_FIFO_PIPES    93 maint/gnulib/lib/isapipe.c   if (! ((HAVE_FIFO_PIPES == 0 || HAVE_FIFO_PIPES == 1)
HAVE_FIFO_PIPES    19 maint/gnulib/lib/isapipe.h #ifndef HAVE_FIFO_PIPES