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Re: How to use a different ld-linux.so?


From: John Reiser
Subject: Re: How to use a different ld-linux.so?
Date: Tue, 29 Jun 2004 08:34:14 -0700
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) Gecko/20030225

If re-linking is allowed, then ld-linux.so.2 has a feature that can
help choose libraries dynamically.   In search paths used to locate
DT_NEEDED shared libraries, ld-linux.so.2 expands the strings
${ORIGIN}, ${PLATFORM}, and ${LIB} using the shell environment
variables.  This is undocumented (at least, I cannot find any),
but unlikely to disappear; it's for "Solaris compatibility".
The source is function _dl_dst_substitute() in file elf/dl-load.c.
"dst" apparently means "dynamic string token".



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