Huffman to VHDl accelDSP error

Hi All,

I was trying to convert a Huffman Compression matlab code to vhdl and I have got the following error during analysis step.Is there any equivalent function to "strcat" to replace.

Pls Help me as soon as u can. Error is,

I-ANALYZE-0009): Loading function M-file '"C:\Xilinx\10.1\DSP_Tools\AccelWork\done1\Huffman_Encoder.m". #( E-ANALYZE-0022): C:\Xilinx\10.1\DSP_Tools\AccelWork\done1\Huffman_Encoder.m(23): Unsupported built-in function call: "strcat" #( E-ANALYZE-0013): Finished analysis of full design. Some problems were encountered please correct. #( I-GENERAL-0001): Time elapsed: "1.91" seconds