Linux/AM5716: OpenCL compile for static library

Dear Rex,

Our compiler enviroment: 

Ti RT linux SDK:  version (05.02.00.10) ti-processor-sdk-linux-rt-am57xx-evm-05.02.00.10

TI RTOS SDK: version(05.02.00.10) processor-sdk-rtos-am57xx-5-02-00-10

We are using our own static library which is based only for standard C code.

I give a simple example as bellow:

add_test.h

#ifndef _ADD_TEST_H_
#define _ADD_TEST_H_

extern int add_test(int a, int b);
#endif

add_test.c

#include <stdio.h>
#include "add_test.h"

int add_test(int a, int b)
{
  int res = a + b;
  printf("add test\n");
  return res;
}

Then I using the tool cl

#include <stdio.h>
#include "add_test.h"

int add_test(int a, int b)
{
int res = a + b;
printf("add test\n");
return res;
}

We can use cgt-c6x/bin/cl6x -mv6600 --abi=eabi  to get the object file add_test.obj.

next  step,  we use cgt-c6x/bin/ar6x r DspLibTest.lib ./add_test.obj to generate the static library DspLibTest.lib. 

We try to test this library with opencl examples :  opencl-examples-1.1.17.01/persistent_clock_concurrent, we add the dsp.c as bellow:

#include "ti/sysbios/knl/Clock.h"
#include "ti/sysbios/knl/Task.h"
#include "shared.h"
#include "add_test.h"
...  // skip code 

void start_clock(uint32_t *completion_code)
{
    ... // skip code
    printf("The clock ticked %u times in 1 sec\n", counter);
    int result = add_test(3,4);
    *completion_code = APP_OK;
}

In the Makefile we add the library link flag with -lDsPLibTest.lib for the 

EXE        = persistent_clock_concurrent
CXXFLAGS   = -O3 -I../persistent_common
CL6XFLAGS  = -o2 -I./ -I../persistent_common --mem_model:data=far --mem_model:const=data
CLOCLFLAGS = -I./ -lDSBLibTest.lib
USE_RTOS   = 1


VPATH = ../persistent_common

include ../make.inc

$(EXE): host.o host_assist.o
	@echo Linking $@
	$(CXX) $(CXXFLAGS) $^ $(LDFLAGS) $(LIBS) -o $@

host.o: kernel.dsp_h

kernel.dsp_h: dsp.o 

During the compile, it shown the error:

undefined first referenced

symbol          in file

---------       -------------------------

add_test    dsp.obj

error #10234-D: unresolved symbols remain

error #10010: errors encountered during linking; "kernelout" not built 

....

With clocl help , we find that it can use -l option, -l, --lib : Do not link. Stop after compilation, Is this not available for the static library link?

Thanks a lot!