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Add support for version node dependencies in version scripts - #1920
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Steven Ramirez Rosa (Steven6798)
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This commit adds real support for GNU version-script node dependencies
instead of warning and discarding them. A dependent node such as
V1 { ... };
V2 { ... } V1;
previously triggered `Dependent nodes are not supported` and the
dependency was silently dropped. Now, a dependency is validated against
already-registered named version nodes when symbol versioning is
enabled, rejecting unknown, forward, and self references the same way
GNU ld does. Symbol scope, version ID assignment, and `.gnu.version`
continue to be driven purely by node order and symbol rules, so this is
metadata-only.
The `.gnu.version_d` writer now emits a dependency as an additional
`Verdaux` entry on the dependent version definition.
Resolves qualcomm#1581
Signed-off-by: Parth Arora <partaror@qti.qualcomm.com>
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This commit adds real support for GNU version-script node dependencies instead of warning and discarding them. A dependent node such as
previously triggered
Dependent nodes are not supportedand the dependency was silently dropped. Now, a dependency is validated against already-registered named version nodes when symbol versioning is enabled, rejecting unknown, forward, and self references the same way GNU ld does. Symbol scope, version ID assignment, and.gnu.versioncontinue to be driven purely by node order and symbol rules, so this is metadata-only.The
.gnu.version_dwriter now emits a dependency as an additionalVerdauxentry on the dependent version definition.Resolves #1581