Referencing source files with location maps

Pathnames to source files are recorded in libraries by storing the working directory from which the compile is invoked and the pathname to the file as specified in the invocation of the compiler. The pathname may be either a complete pathname or a relative pathname.

ModelSim tools that reference source files from the library locate a source file as follows:

• If the pathname stored in the library is complete, then this is the path used to reference the file.
• If the pathname is relative, then the tool looks for the file relative to the current working directory. If this file does not exist, then the path relative to the working directory stored in the library is used.

This method of referencing source files generally works fine if the libraries are created and used on a single system. However, when multiple systems access a library across a network the physical pathnames are not always the same and the source file reference rules do not always work.

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