From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <540A286C.2050803@xenomai.org>
Date: Fri, 05 Sep 2014 23:17:32 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
MIME-Version: 1.0
References: <20140905184346.GN17690@csclub.uwaterloo.ca>
 <540A0A92.2000405@xenomai.org> <20140905191447.GO17690@csclub.uwaterloo.ca>
 <540A19DC.10507@xenomai.org> <540A1B2C.2050309@xenomai.org>
 <540A1DA7.8090906@xenomai.org> <20140905205404.GP17690@csclub.uwaterloo.ca>
 <540A23A6.8040205@xenomai.org> <20140905210335.GQ17690@csclub.uwaterloo.ca>
 <540A2563.1050304@xenomai.org> <20140905211515.GR17690@csclub.uwaterloo.ca>
In-Reply-To: <20140905211515.GR17690@csclub.uwaterloo.ca>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Subject: Re: [Xenomai] How to get debug symbols in xenomai libraries
List-Id: Discussions about the Xenomai project <xenomai.xenomai.org>
List-Unsubscribe: <http://www.xenomai.org/mailman/options/xenomai>,
 <mailto:xenomai-request@xenomai.org?subject=unsubscribe>
List-Archive: <http://www.xenomai.org/pipermail/xenomai/>
List-Post: <mailto:xenomai@xenomai.org>
List-Help: <mailto:xenomai-request@xenomai.org?subject=help>
List-Subscribe: <http://www.xenomai.org/mailman/listinfo/xenomai>,
 <mailto:xenomai-request@xenomai.org?subject=subscribe>
To: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Cc: xenomai@xenomai.org

On 09/05/2014 11:15 PM, Lennart Sorensen wrote:
> On Fri, Sep 05, 2014 at 11:04:35PM +0200, Gilles Chanteperdrix wrote:
>> On 09/05/2014 11:03 PM, Lennart Sorensen wrote:
>>> On Fri, Sep 05, 2014 at 10:57:10PM +0200, Gilles Chanteperdrix wrote:
>>>> On 09/05/2014 10:54 PM, Lennart Sorensen wrote:
>>>>> On Fri, Sep 05, 2014 at 10:31:35PM +0200, Gilles Chanteperdrix wrote:
>>>>>> Just tried a fresh build with minimal flags, simply:
>>>>>>
>>>>>> configure --enable-debug CFLAGS="-fomit-frame-pointer"
>>>>>> --host=arm-linux-gnueabihf
>>>>>> make
>>>>>> arm-linux-gnueabihf-gdb src/skins/common/.libs/libxenomai.so.0.0.0
>>>>>>
>>>>>> and gdb says it can find symbols. (-fomit-frame-pointer is needed with
>>>>>> the toolchain I use, otherwise gcc complains that it can not use the r7
>>>>>> register).
>>>>>
>>>>> I tried adding that option, and still gdb says no symbols.
>>>>>
>>>>> Toolchain is debian wheezy's gcc 4.6, and everything is natively compiled.
>>>>>
>>>>
>>>> Do you build the package manually, like I just did? Or do you use the
>>>> debian/rules stuff?
>>>
>>> I use the debian/rules, but I set DEB_CFLAGS_APPEND=-fomit-frame-pointer
>>> and I added --enable-debug to the configure line in debian/rules and I
>>> set DEB_BUILD_OPTIONS=nostrip
>>>
>> Could you try a manual build?
> 
> That makes installing such a pain and the gcc lines had all the right
> arguments (-g -fomit-frame-pointer etc).  And we did want to debug with
> as close to the normal runtime build as possible.
> 
You do not need to run "make install"
Just run configure --enable-debug
Then make
Then try gdb on the compiled libxenomai.so.0.0.0

There are two layers of Makefileries, thee aim is to find where the
problem is coming from, not to use this as a solution.

-- 
                                                                Gilles.