Re: .debug objects build rule need some care

[Julio Merino <jmmv%NetBSD.org@localhost>]

On Tue, Jul 20, 2010 at 2:54 PM, Nicolas Joly <njoly%pasteur.fr@localhost> 
wrote:
>
>        On Tue, Jul 20, 2010 at 02:45:49PM +0100, Julio M. Merino Vidal wrote:
>> On Tue, Jul 20, 2010 at 2:37 PM, Nicolas Joly <njoly%pasteur.fr@localhost> 
>> wrote:
>> >
>> > Ack, but i now rembember why i did it that way ...
>> >
>> > With the following construct, it won't work as the .gnu_debuglink
>> > section will record the file name to be opened for loading the debug
>> > symbols ... x.debug.tmp instead of installed x.debug file.
>> >
>> > ${_PROGDEBUG.${_P}}: ${_P}
>> >        ${_MKTARGET_CREATE}
>> >        ${OBJCOPY} --only-keep-debug ${_P} ${_PROGDEBUG.${_P}}.tmp
>> >        ${OBJCOPY} --strip-debug \
>> >            -R .gnu_debuglink
>> >        --add-gnu-debuglink=${_PROGDEBUG.${_P}}.tmp ${_P}
>> >        mv ${_PROGDEBUG.${_P}}.tmp ${_PROGDEBUG.${_P}}
>>
>> I haven't tried but looking at this code: it looks like that passing
>> the non-tmp name to --add-gnu-debuglink and keeping .tmp everywhere
>> else may DTRT.
>
> Unfortunately no ... i already tried it, and it needs the real
> file. Grrr ...
>
> #    create  df/df.debug
> /local/src/NetBSD/tool/bin/x86_64--netbsd-objcopy --only-keep-debug df 
> df.debug.tmp
> /local/src/NetBSD/tool/bin/x86_64--netbsd-objcopy --strip-debug  -R 
> .gnu_debuglink --add-gnu-debuglink=df.debug df
> /local/src/NetBSD/tool/bin/x86_64--netbsd-objcopy:st24479a: cannot fill debug 
> link section `df.debug': No such file or directory

Interesting.  So it only keeps the basename?  In that case, we could
generate the files in a 'tmp' subdirectory and then move them back
into the parent directory.  Not sure if it's worth the effort though.

-- 
Julio Merino