How compile SDS?

#1
Hello.

I need help to compile a program SDS.

I have IntelliCAD 4 PE+ and IntelliCAD 6.1 PE+, I don't find possible to compile the
examples that have in SDS, I am using Microsoft Visual C++ 6.

I use the file INVOKE.MAK to make the compilation and it gives me the
following errors.

--------------------Configuration: invoke - Win32 Debug--------------------
Linking...
Creating library Debug/invoke.lib and object Debug/invoke.exp
Entpoint.obj : error LNK2001: unresolved external symbol _SDS_GetGlobals
invoke.obj : error LNK2001: unresolved external symbol _sds_retvoid
invoke.obj : error LNK2001: unresolved external symbol _sds_relrb
invoke.obj : error LNK2001: unresolved external symbol _sds_getargs
invoke.obj : error LNK2001: unresolved external symbol _sds_getfuncode
invoke.obj : error LNK2001: unresolved external symbol _sds_defun
invoke.obj : error LNK2001: unresolved external symbol _sds_exit
invoke.obj : error LNK2001: unresolved external symbol _sds_link
invoke.obj : error LNK2001: unresolved external symbol _sds_printf
invoke.obj : error LNK2001: unresolved external symbol _sds_init
.\invoke.dll : fatal error LNK1120: 10 unresolved externals
Error executing link.exe.

invoke.dll - 11 error(s), 0 warning(s)


Can you help me to solve this problem?