HAVE___FLBF        22 maint/gnulib/lib/fbufmode.c #if HAVE___FLBF
HAVE___FLBF        38 maint/gnulib/lib/fbufmode.c # if HAVE___FLBF                    /* glibc >= 2.2 */
HAVE___FLBF        66 maint/gnulib/lib/fbufmode.c #  if HAVE___FLBF                   /* Solaris >= 7 */
HAVE___FLBF        93 maint/gnulib/lib/fbufmode.c #elif HAVE___FLBF && HAVE___FBUFSIZE /* musl libc */