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Re: Question about ELF linker semantics
From: mark@codesourcery.com
Date: Tue, 15 Jun 1999 13:55:59 -0700
That makes sense to me. But, I think this is the *opposite*
situation. Here, the "canonical" name is _environ; that's the
non-weak symbol. The main executable is using _environ. IRIX ld
emits a symbol-table entry for _environ. We emit entries for both
_environ and the (weak) environ. I can't see why we're referencing
the weak symbol at all; nobody has mentioned it. Or am I still
missing the point?
Oh yeah.
I think that bit in elflink.h may be there because if we are building
a shared library, we need to make sure that both the weak symbol and
the regular symbol are in the symbol table if the regular symbol is.
If I'm right, it's not needed when generating an executable.
That code hasn't changed in a long time, though. It would be
interesting to see what Solaris does.
Ian