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[syslinux] Syslinux 5 Path Option.

Matt Fleming matt at console-pimps.org
Tue Dec 11 05:30:14 PST 2012 
On Tue, 2012-12-11 at 12:55 +1000, Michael D. Setzer II wrote:
> I'm not seeing how to set this path option?
> Here is what I get using vesamenu.c32 as an example when 
> moved to a directory outside of the build. The current syslinux 
> 4.06 has all the files in the same directory which is at the root of 
> the cd.
> 
> ldd vesamenu.c32
> 
> linux-gate.so.1 =>  (0xb77c5000)
> ../../com32/libutil/libutil_com.c32 => not found
> ../../com32/lib/libcom32.c32 => not found
> 
> readelf -d vesamenu.c32
> 
> Dynamic section at offset 0x635c contains 17 entries:
>   Tag        Type                         Name/Value
>  0x00000001 (NEEDED)                     Shared library: 
> [../../com32/libutil/libutil_com.c32]
>  0x00000001 (NEEDED)                     Shared library: 
> [../../com32/lib/libcom32.c32]
>  0x6ffffef5 (GNU_HASH)                   0x94
>  0x00000005 (STRTAB)                     0x830
>  0x00000006 (SYMTAB)                     0x200
>  0x0000000a (STRSZ)                      1199 (bytes)
>  0x0000000b (SYMENT)                     16 (bytes)
>  0x00000003 (PLTGOT)                     0x6458
>  0x00000002 (PLTRELSZ)                   552 (bytes)
>  0x00000014 (PLTREL)                     REL
>  0x00000017 (JMPREL)                     0x10a8
>  0x00000011 (REL)                        0xce0
>  0x00000012 (RELSZ)                      968 (bytes)
>  0x00000013 (RELENT)                     8 (bytes)
>  0x00000016 (TEXTREL)                    0x0
>  0x6ffffffa (RELCOUNT)                   70
>  0x00000000 (NULL)                       0x0
> 
> So where does one modify this new PATH setting? The 
> ../../com32 path is in plan text using hexedit to look at, and could 
> be manually modified, but that wouldn't appear to be the best way 
> to modify it, and would probable be an unwanted hack.

You can safely ignore the paths of these DT_NEEDED entries - they're not
used internally by Syslinux, only the final path component is used, e.g.
libcom32.c32.

I'll fix the paths in the DT_NEEDED entries in the future so that it's
less confusing.

-- 
Matt Fleming, Intel Open Source Technology Center
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