AM3359: 最新的SDK9.01中，pru-adc-1.0的例子，make不通过，编译器错误

# PRU-ADC build targets
export TI_SDK_PATH_603=/home/lixiao/ti_sdk6.03
export TI_SDK_PATH_901=/home/lixiao/ti_sdk9.01

export LINUX_DEVKIT_PATH_603=$(TI_SDK_PATH_603)/linux-devkit
export LINUX_DEVKIT_PATH_901=$(TI_SDK_PATH_901)/linux-devkit

SDK_PATH_TARGET_603=$(LINUX_DEVKIT_PATH_603)/sysroots/armv7at2hf-neon-oe-linux-gnueabi
SDK_PATH_TARGET_901=$(LINUX_DEVKIT_PATH_901)/sysroots/armv7at2hf-neon-oe-linux-gnueabi

pru-adc:
	@echo =================================
	@echo    Building PRU-ADC
	@echo =================================
	@cd example-applications; cd `find . -name "*pru-adc*"`; \
		make PRU_CGT=$(LINUX_DEVKIT_PATH_901)/sysroots/x86_64-arago-linux/usr/share/ti/cgt-pru PRU_SSP=$(SDK_PATH_TARGET_901)/usr

pru-adc_clean:
	@echo =================================
	@echo    Cleaning PRU-ADC
	@echo =================================
	@cd example-applications; cd `find . -name "*pru-adc*"`; \
		make PRU_CGT=$(LINUX_DEVKIT_PATH_901)/sysroots/x86_64-arago-linux/usr/share/ti/cgt-pru PRU_SSP=$(SDK_PATH_TARGET_901)/usr clean

pru-adc_install:
	@echo ===================================================
	@echo   Installing PRU-ADC
	@echo ===================================================
	@if [ ! -d $(DESTDIR) ] ; then \
		echo "The extracted target filesystem directory doesn't exist."; \
		echo "Please run setup.sh in the SDK's root directory and then try again."; \
		exit 1; \
	fi
	@install -d $(DESTDIR)/lib/firmware/pru;
	@install -d $(DESTDIR)/usr/bin;
	@cd example-applications; cd `find . -name "*pru-adc*"`; \
	install -m 0644 ./PRU_ADS8688_Controller/gen/PRU_ADS8688_Controller.out \
		$(DESTDIR)/lib/firmware/pru; \
	install -m 0644 ./PRU_ADS8688_Interface/gen/PRU_ADS8688_Interface.out \
		$(DESTDIR)/lib/firmware/pru; \
	install -m 755 ./ARM_User_Space_App/gen/ARM_User_Space_App.out $(DESTDIR)/usr/bin/pru-adc-arm-app.out