In the meantime I found that this does not seems to be an upstream issue because TIME_T_MAX_BITS is manipulated for i386 in debian/rules:
ifeq (i386,$(DEB_HOST_ARCH))
sed -i 's/TIME_T_MAX_BITS 32/TIME_T_MAX_BITS 31/' config.h
endif
Unfortunately I cannot find documentation about this line anywhere.
Thanks,
Andy

