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GenEx/LINK_LIBRARY: Add NEEDED_LIBRARY support on Linux

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This commit is contained in:
Robert Maynard
2026-08-13 13:45:19 -04:00
committed by Brad King
parent 158b64688f
commit a2e6306c27
7 changed files with 66 additions and 0 deletions
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Help/variable/include/LINK_LIBRARY_PREDEFINED_FEATURES.rst
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@@ -101,6 +101,19 @@
Uses the ``-needed_library`` or ``-needed-l`` option as appropriate,
with the same linker constraints as ``NEEDED_FRAMEWORK``.
Linux
.. versionadded:: 4.5
Wraps the library with ``--no-as-needed`` / ``--as-needed`` to force
an entry in the binary's ``DT_NEEDED`` list regardless of whether any
symbols from the library are directly referenced. When the linker
supports ``--push-state`` / ``--pop-state`` (GNU ld >= 2.25, gold,
LLD, MOLD), the state-stacking form is used instead to correctly
restore the pre-existing ``--as-needed`` state rather than
unconditionally enabling it after the library. This feature is only
meaningful for shared libraries; applying it to a static library
produces a developer warning and has no effect.
``REEXPORT_LIBRARY``
This is similar to the ``REEXPORT_FRAMEWORK`` feature, except it is for use
with non-framework targets or libraries (Apple platforms only).