Undefined symbol in lumen ohm9/12/2023 However, only explicit shared object dependencies are recorded in the output file being generated. Therefore, an implicit reference to libfoo.so from prog is established.īecause main.c made a specific reference to the interface provided by libfoo.so, prog really has a dependency on libfoo.so. Prog is built with an explicit reference to libbar.so. For example, continuing with the files main.c and foo.c used in the previous example. To a symbol definition in an implicitly defined shared object. Symbols can also remain undefined when a symbol reference in a relocatable object is bound However, more complex execution paths can result in this error condition taking much longer to detect, which This error might be detected during the initial execution and testing of an application. If an unavailable symbol reference is required during the execution of a process, a fatal runtime relocation error occurs. Take care when using the -z nodefs option. To allow undefined symbols, as in the previous example, use the link-editor's -z nodefs option to suppress the default error condition. No output written to progĬreate a dynamic executable and leaves an unresolved symbol definition, an undefined symbol error results. A symbol remains undefined when a symbol reference in a relocatable object The link-editor's default behavior is to terminate with an appropriate error message should any symbols remain undefined. ![]() When generating an executable output file, With the type of output file being generated. Undefined symbols can affect the link-edit process according to the type of symbol, together These symbol references are referred to as undefined symbols. ![]() After all of the input files have been read and all symbol resolution is complete, the link-editor searches the internal symbol table for any symbol references that have not been bound to
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