36.2. Adding a built-in variable

36.2. Adding a built-in variable
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If you must be able to access the Lisp variable in the C code, follow these steps:

declare the variable name in constsym.d in the appropriate package (probably “CUSTOM”, if there is no specific package);
add a define_variable() call in function init_symbol_values() in file spvw.d
export your variable name from the appropriate package in file init.lisp

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36.1. Adding a built-in function	Home	36.3. Recompilation