ifeq ($(subdir),misc)
sysdep_routines += ioperm
sysdep_headers += sys/io.h
endif
ifeq ($(subdir),debug)
gen-as-const-headers += signal-defines.sym
ifeq ($(subdir),csu)
ifeq (yes,$(build-shared))
sysdep_routines += divdi3
shared-only-routines += divdi3
CPPFLAGS-divdi3.c = -Din_divdi3_c