Available Symbols (GCL SI Manual)

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### 16.1 Available Symbols

When GCL is built, those symbols in the system libraries which are referenced by functions linked in in the list of objects given in `unixport/makefile`, become available for reference by GCL code.

On some systems it is possible with `faslink` to load `.o` files which reference other libraries, but in general this practice is not portable.