Allow Java's ELF symtab reader to use separate debuginfo files

Andrew John Hughes gnu_andrew at
Wed Dec 9 09:30:19 PST 2009

2009/12/9 Andrew Haley <aph at>:
> Andrew John Hughes wrote:
>> 2009/12/9 Andrew Haley <aph at>:
>>> This is
>>> The symptom is that jmap doesn't work because target libraries are stripped.
>>> The fix is to allow the symtab reader to use the separate debuginfo files
>>> that are available for all (AFAIK) GNU/Linux distributions.
>>> I'll commit this to the IcedTea repo, with a view to pushing it upstream
>>> to OpenJDK if it works on all distros.
>> It would be good to see this upstream.  The obvious compatibility
>> issue I can see is hardcoding /usr/lib/debug.  Passing that in from
>> the Makefile, thus allowing to be overridden if necessary, might be
>> better.
>> i.e.
>> static const char debug_file_directory[] = "/usr/lib/debug";
>> becomes
>> #define DEBUG_FILE_DIRECTORY "/usr/lib/debug"
>> #endif
>> with apppropriate logic in the OpenJDK makefile(s).
> I think this directory is generally assumed to be hard-coded everywhere.  I
> will make such a change if this patch won't be committed otherwise, but I do
> not believe that it will ever be used.

Ah, ok.  This was the only possibly distro-specific issue I could see
in the patch.

>> Only other comment is that your ChangeLog should refer to openjdk, not
>> openjdk-ecj as we want this for all builds. The patch itself is
>> correct, it's just the ChangeLog.
> Yeah, I noticed this already.
> Thanks,
> Andrew.

Andrew :-)

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