12.159 --use_definition_visibility

Enables the linker to use the visibility of the definition in preference to the visibility of a reference when combining symbols.

Usage

When the linker combines global symbols the visibility of the symbol is set with the strictest visibility of the symbols being combined. Therefore, a symbol reference with STV_HIDDEN visibility combined with a definition with STV_DEFAULT visibility results in a definition with STV_HIDDEN visibility.

For example, a symbol reference with STV_HIDDEN visibility combined with a definition with STV_DEFAULT visibility results in a definition with STV_DEFAULT visibility.

This can be useful when you want a reference to not match a Shared Library, but you want to export the definition.

Note:

This option is not ELF-compliant and is disabled by default. To create ELF-compliant images, you must use symbol references with the appropriate visibility.

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