Re: [Libunwind-devel] Minimum Linux Version requirements for libunwind?

[John Knight]

Hi Dave,

Thanks for the additional info.  I have added the -fexceptions and 
-funwind-tables to the gcc command line and rebuilt.  The resulting binary does 
not have the .ARM.exidx or .ARM.extab either.  I have since confirmed that we 
are NOT using glibc, but are instead using libuClibc-1.0.14.so.   I did try to 
use libunwind with the binary after adding the -fexceptions and 
-funwind-tables, and it still does not work.

I guess the real question is, does libunwind work with binaries built with 
uclibc?

Thanks for your help.

John

-----Original Message-----
From: Dave Watson <address@hidden>
Sent: Wednesday, May 23, 2018 10:50 AM
To: John Knight <address@hidden>
Cc: Luke Diamand <address@hidden>; address@hidden
Subject: Re: [Libunwind-devel] Minimum Linux Version requirements for libunwind?

On 05/23/18 05:40 PM, John Knight wrote:
> Hi Luke,
>
> Objdump did not show .ARM.exidx or .ARM.extab.   There is only one section 
> specific to arm: .ARM.attributes.
>
> I don’t know what this all means, but I am hoping it makes sense to
> you. 😊

It just sounds to me like you are missing the unwind tables, did you try one or 
all of  -fexceptions or -funwind-tables/-fasynchronous-unwind-tables ?

I think these are default on on x86, but not arm.

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