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Diffstat (limited to 'ld/ld.texinfo')
| -rw-r--r-- | ld/ld.texinfo | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/ld/ld.texinfo b/ld/ld.texinfo index c6002da..2b77260 100644 --- a/ld/ld.texinfo +++ b/ld/ld.texinfo @@ -5292,6 +5292,24 @@ to handle the other symbols, then the both the new names @emph{and} the original names for the renamed symbols will be exported. In effect, you'd be aliasing those symbols, not renaming them, which is probably not what you wanted. + +@cindex weak externals +@item weak externals +The Windows object format, PE, specifies a form of weak symbols called +weak externals. When a weak symbol is linked and the symbol is not +defined, the weak symbol becomes an alias for some other symbol. There +are three variants of weak externals: +@itemize +@item Definition is searched for in objects and libraries, historically +called lazy externals. +@item Definition is searched for only in other objects, not in libraries. +This form is not presently implemented. +@item No search; the symbol is an alias. This form is not presently +implemented. +@end itemize +As a GNU extension, weak symbols that do not specify an alternate symbol +are supported. If the symbol is undefined when linking, the symbol +uses a default value. @end table @ifclear GENERIC |