编译dvsdk_demos出现的错误无法理解，求解答，谢谢！！

我想修改demos里的示例代码，然后重新编译，现在还没修改，计划先看重新编译的情况：
先是make编译提示：
======== Building encode ========
Configuring application using encode.cfg
/bin/sh: /xs: not found
make: *** [encode_config/compiler.opt] Error 127
看Makefile文件如下：
TARGET = $(notdir $(CURDIR))
ifeq ($(VERBOSE), true)
override VERBOSE =
else
override VERBOSE = @
endif
-include $(DMAI_INSTALL_DIR)/Platform.make
# Package path for the XDC tools
XDC_PATH = $(USER_XDC_PATH);../../packages;$(DMAI_INSTALL_DIR)/packages;$(CE_INSTALL_DIR)/packages;$(FC_INSTALL_DIR)/packages;$(LINK_INSTALL_DIR)/packages;$(LINK_INSTALL_DIR);$(XDAIS_INSTALL_DIR)/packages;$(CMEM_INSTALL_DIR)/packages;$(CODEC_INSTALL_DIR)/packages;$(CE_INSTALL_DIR)/examples
# Where to output configuration files
XDC_CFG = $(TARGET)_config
# Output compiler options
XDC_CFLAGS = $(XDC_CFG)/compiler.opt
# Output linker file
XDC_LFILE = $(XDC_CFG)/linker.cmd
# Input configuration file
XDC_CFGFILE = $(TARGET).cfg
PLATFORM_OS = $(strip $(PLATFORM_OS_dm6467_al))
PLATFORM_DEVICE = $(strip $(PLATFORM_DEVICE_dm6467_al))
PLATFORM_PERIPHERALS = $(strip $(PLATFORM_PERIPHERALS_dm6467_al))
PLATFORM_XDC_TARGET = $(strip $(PLATFORM_XDC_TARGET_dm6467_al))
PLATFORM_XDC = $(strip $(PLATFORM_XDC_dm6467_al))
# The XDC configuration tool command line
#CONFIGURO = /home/dm6467t/dvsdk_3_10_00_19/xdctools_3_16_01_27/xs xdc.tools.configuro
# change by TEST
CONFIGURO = $(XDC_INSTALL_DIR)/xs xdc.tools.configuro
C_FLAGS += -Wall -g
LD_FLAGS += -lpthread -lpng -lz -ljpeg -lfreetype -lasound
LD_FLAGS += -L$(LINUXLIBS_INSTALL_DIR)/lib
COMPILE.c = $(VERBOSE) $(CC) $(C_FLAGS) $(CPP_FLAGS) -c
LINK.c = $(VERBOSE) $(CC) $(LD_FLAGS)
SOURCES = $(wildcard *.c) $(wildcard ../*.c)
HEADERS = $(wildcard *.h) $(wildcard ../*.h)
OBJFILES = $(SOURCES:%.c=%.o)

可能是上面CONFIGURO = $(XDC_INSTALL_DIR)/xs xdc.tools.configuro 的原因，但是XDC_INSTALL_DIR的设置并没有错，而且xdctools目录里也确实有xs 这个可执行文件。
于是把CONFIGURO = $(XDC_INSTALL_DIR)/xs xdc.tools.configuro改成真是无替代的脚本：
#CONFIGURO = /home/dm6467t/dvsdk_3_10_00_19/xdctools_3_16_01_27/xs xdc.tools.configuro
结果运行出现了下面的错误：
Usage: xs xdc.tools.configuro [--help]
[-v]
[-@ optionsfile]
[-o outdir]
[-b config_bld | -c codegen_dir | --cb]
[-t target] [-p platform[:instance]] [-r profile]
[-Dname=value]
[-w | -x regexp]
[--rtsName pkg_name]
[--cfgArgs args_string]
[--linkTemplate linker_template]
[--tcf] [--bios5] [--pkg]
[--compileOptions compile_options_string]
[--oc compiler.opt] [--ol linker.cmd]
infile.cfg
cat: encode_config/compiler.opt: No such file or directory
audio.c:42: fatal error: xdc/std.h: No such file or directory
compilation terminated.
make: *** [audio.o] Error 1

请教，该怎么才能重新编译demos里的源代码呢？哪里有帮助文档可以参考？
谢谢