[lttng-dev] [EXTERNAL] Re: lttng 2.12 install

Tue Nov 24 16:18:42 EST 2020

On Tue, Nov 24, 2020 at 09:02:41PM +0000, Weber, John wrote:
> Ok, it I get what you're saying then I am modifying make on the command line while running make?

Yeah.

> Still the same problem. I don't think it is using the gcc I am specifying as it continues to look in: /usr/src/kernels/3.10.0-1127.19.1.el7.x86_64/

This is normal since you are compiling the modules against that source tree.

> And I suspect it is still seeing the OS version of gcc (4.8.5) instead of the 6.3.1 provided by devtoolset-6.

At this point, I would take a look at the actual package installed that provide gcc
4.8.5 and have a look at what is available from centos/redhjat and also maybe ping
a centos mailing list. You can CC me on that email if you feel like
it just in case it turn out the problem is on our side.

> Do you have some pixy dust??

Sadly, no. Others might have some left...

> 
> ----------------------------
> John Weber
> Ball Aerospace
> ITS ND System Administrator 
> 10 Longs Peak Dr., Broomfield, CO 80021
> C: 303-807-3608   P: 303-234-2103
> E: jweber1 at ball.com
>  
>  
> 
>  
> 
>  
> 
> -----Original Message-----
> From: Jonathan Rajotte-Julien <jonathan.rajotte-julien at efficios.com> 
> Sent: Tuesday, November 24, 2020 1:22 PM
> To: Weber, John <jweber1 at ball.com>
> Cc: 'lttng-dev at lists.lttng.org' <lttng-dev at lists.lttng.org>
> Subject: Re: [EXTERNAL] Re: [lttng-dev] lttng 2.12 install
> 
> Hi John,
> 
> AFAIK, you should be able to do so using something similar to the following:
> 
>   make CC="your_compiler" HOSTCC="your_compiler" ...
> 
> Cheers
> 
> 
> On Tue, Nov 24, 2020 at 07:22:10PM +0000, Weber, John wrote:
> > Hi, thanks for your reply. So, on my system there are 2 gcc's. one 
> > installed by the OS and the other by installation of devtooset-6. Upon 
> > checking the versions of both I have 4.8.5 installed by OS in /usr/bin 
> > the other one from devtoolset is 6.3.1. Your reference to check 
> > /proc/version shows that it sees 4.8.5. how can I manipulate the 
> > install to use the gcc from /opt/rh/devtoolset-6/root/bin/gcc (which 
> > is 6.3.1)
> > 
> > ----------------------------
> > John Weber
> > Ball Aerospace
> > ITS ND System Administrator
> > 10 Longs Peak Dr., Broomfield, CO 80021
> > C: 303-807-3608   P: 303-234-2103
> > E: jweber1 at ball.com
> >  
> >  
> > 
> >  
> > 
> >  
> > 
> > -----Original Message-----
> > From: Jonathan Rajotte-Julien <jonathan.rajotte-julien at efficios.com>
> > Sent: Friday, November 20, 2020 11:48 AM
> > To: Weber, John <jweber1 at ball.com>
> > Cc: 'lttng-dev at lists.lttng.org' <lttng-dev at lists.lttng.org>
> > Subject: [EXTERNAL] Re: [lttng-dev] lttng 2.12 install
> > 
> > Hi John,
> > 
> > This does not seems to be directly related to the lttng-modules project.
> > 
> > This errors seems to arise because of the compiler you are using to compile lttng-modules (kernel modules). The RETPOLINE check is part of the kernel build system, not directly lttng-modules.
> > 
> > I would recommend that you take a look at the /proc/version file and the compiler that was used to compile your kernel. 
> > 
> > Also note that EfficiOS [1] provide commercial support if you ever need more in-depth support. 
> > 
> > Cheers
> > 
> > [1] 
> > https://urldefense.proofpoint.com/v2/url?u=https-3A__www.efficios.com_
> > contact_&d=DwIBAg&c=jF7FvYH6t0RX1HrEjVCgHQ&r=t_BRyMysL9XIchJvkrT9wQ&m=
> > EB0u_nTE1tUx4ZXA7ENPxCS2zGFrbf0ZpfI5DiP051o&s=JumKvFuRjeKw-8NQkpWd1nN8
> > ZOHAo-JMUMiqWc2Oq9o&e=
> > 
> > On Fri, Nov 20, 2020 at 05:43:00PM +0000, Weber, John via lttng-dev wrote:
> > > Hi, I have a centos 7.8 workstation that I'm trying to install lttng-modules & lttng-tools from source. Based on your install instructions I'm working on installing the modules part first and its failing. I am getting the error:
> > > Make entering directory /usr/src/kernels/3.10.0-1127.19.1.el7.x86_64
> > > Arch/x86/Makefile:166 *** CONFIG_RETPOLINE=y, but not supported by 
> > > the compiler. Compiler update recommended... stop
> > > Make: modules error 2
> > > 
> > > Help, how can I get this program to install? Im stuck. Also, my work environment is classified so there is no access to internet from high side.
> > > 
> > > ----------------------------
> > > John Weber
> > > Ball Aerospace
> > > ITS ND System Administrator
> > > 10 Longs Peak Dr., Broomfield, CO 80021
> > > C: 303-807-3608   P: 303-234-2103
> > > E: jweber1 at ball.com
> > > 
> > > 
> > > [cid:image001.jpg at 01D6BF29.AD6C5250]
> > > 
> > > 
> > > [cid:image002.jpg at 01D6BF29.AD6C5250]<http://www.ball.com/aerospace>
> > > 
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> > 
> > --
> > Jonathan Rajotte-Julien
> > EfficiOS
> > 
> > This message and any enclosures are intended only for the addressee.  
> > Please notify the sender by email if you are not the intended 
> > recipient.  If you are not the intended recipient, you may not use, 
> > copy, disclose, or distribute this message or its contents or 
> > enclosures to any other person and any such actions may be unlawful.  
> > Ball reserves the right to monitor and review all messages and enclosures sent to or from this email address.
> 
> --
> Jonathan Rajotte-Julien
> EfficiOS
> 
> This message and any enclosures are intended only for the addressee.  Please 
> notify the sender by email if you are not the intended recipient.  If you are 
> not the intended recipient, you may not use, copy, disclose, or distribute this 
> message or its contents or enclosures to any other person and any such actions 
> may be unlawful.  Ball reserves the right to monitor and review all messages 
> and enclosures sent to or from this email address.

-- 
Jonathan Rajotte-Julien
EfficiOS