Compiling C Program by Linking Object File generated from ".ec file."

Hi All, I have to compile a program "smain.c" , which calls a function "sfunc",which is basically an "embbeded c file" with .ec extension (i.e sfunc.ec.) I have got the object file of the function sfunc.ec named "sfunc.o" archieved in the library called "libfunc.a." Now When I am trying to create a final executable for my main program using "cc -o prog -dn -L./ smain.c -lfunc ",by linking the library containing the object file for that function I am getting the following error: Error: Undefined first referenced symbol in file .................................................. .................................................. .................................................. ld: prog: fatal error: Symbol referencing errors. No output written to prog . (prog is the final executable.) Can anyone tell me why I am getting this error? Thanks in advance.(I am working DYNIX/ptx 4.0 V4.4.2 i386 version of unix) Viky