[poky] Missing debug info

[Gary Thomas]

On 04/03/2011 01:56 PM, Mark Hatle wrote:
> On 4/3/11 9:53 AM, Gary Thomas wrote:
>> I'm trying to debug some code which uses the openssl library, built from
>> the Poky mainline.  For some reason (not obvious to me), there is no debug
>> info for this library, which makes GDB pretty useless :-(
>>
>> (gdb) info sharedlibrary
>>   From        To          Syms Read   Shared Object Library
>> 0x40077790  0x4008f60c  Yes         /tmp/cobra_root/lib/ld-linux.so.3
>> 0x401abf80  0x401d57d8  Yes (*)     /tmp/cobra_root/usr/lib/libssl.so.0.9.8
>> 0x40225548  0x402cfbfc  Yes (*)     /tmp/cobra_root/usr/lib/libcrypto.so.0.9.8
>> 0x400f28f8  0x4010cf90  Yes         /tmp/cobra_root/usr/lib/libpcap.so.1
>> 0x40326340  0x4040e8d8  Yes         /tmp/cobra_root/lib/libc.so.6
>> 0x401278fc  0x40128614  Yes         /tmp/cobra_root/lib/libdl.so.2
>> (*): Shared library is missing debugging information.
>>
>> Any idea why these libraries don't have debg info?  how to get it?
>> Rebuilding that library with printf() is pretty tedious...
>>
>> Thanks
>>
>
> Do the libraries in question have corresponding -dbg package that are empty?  Or
> is there stuff in there, it's just incomplete?
>
> What I'm trying to understand is were these items stripped during the recipe
> build, or when they're supposed to be by the package.bbclass into the regular
> and dbg packages.

Ah, interesting.  The openssl package does have a -dbg version, but not for
libopenssl nor libcrypto (which were built by the same source package).  Any
ideas how/why that happened?  I didn't see any magic in the build arguments,
but it's a pretty complex package so I might have missed something.

Just to see what I could learn from this, I tried to install openssl-dbg and got this:

   Downloading file:/home/local/p60_poky/tmp/deploy/ipk/armv7a/openssl-dbg_0.9.8p-r3_armv7a.ipk.
   openssl-dbg: unsatisfied recommendation for libcrypto-dbg
   openssl-dbg: unsatisfied recommendation for libssl-dbg
   Installing openssl (0.9.8p-r3) to root...
   Downloading file:/home/local/p60_poky/tmp/deploy/ipk/armv7a/openssl_0.9.8p-r3_armv7a.ipk.
   Configuring openssl.
   Configuring openssl-dbg.

-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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