The Digital Mars linker ( OPTLINK) was designed to be compatible with Microsoft's linker, and consequently has inherited an awkward command-line interface. Adding library search paths is a major pain.
To make life a bit easier, create the file "optlinks.cfg" in C:\dm\bin. The file should contain only the line
/scanlibThis makes OPTLINK look at the environment variable "LIB".
Next, edit the file c:\dmd\bin\sc.ini and change the line containing LIB to something like
LIB="%@P%\..\lib";\dm\lib;"%@P%\..\3rdparty\lib"This makes link search also in the directory
C:\dmd\3rdparty\libYou may need to change the paths to your requirements.