don't know why my email didn't receive in the list, so i reply again: i finally built pass with define:
CFLAGS += -std=gnu99 in cbfstool/Makefile TOOLCFLAGS ?= -std=gnu99 in cbfstool/Makefile.inc
and change cbfstool.c code to : -- if (tolower(suffix[0])=='k') { ++ if (tolower((int)suffix[0])=='k') {
-- if (tolower(suffix[0])=='m') { ++ if (tolower((int)suffix[0])=='m') {