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: jweb...@ball.com
>  
>  
> 
>  
> 
>  
> 
> -----Original Message-----
> From: Jonathan Rajotte-Julien <jonathan.rajotte-jul...@efficios.com> 
> Sent: Friday, November 20, 2020 11:48 AM
> To: Weber, John <jweb...@ball.com>
> Cc: 'lttng-dev@lists.lttng.org' <lttng-dev@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-8NQkpWd1nN8ZOHAo-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: jweb...@ball.com
> > 
> > 
> > [cid:image001.jpg@01D6BF29.AD6C5250]
> > 
> > 
> > [cid:image002.jpg@01D6BF29.AD6C5250]<http://www.ball.com/aerospace>
> > 
> > This message and any enclosures are intended only for the addressee.  
> > Please notify the sender by email if you are not the intended 
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> 
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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
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