[P4-dev] Switch.p4 compilation

Frédéric LOUI frederic.loui at renater.fr
Fri Feb 1 13:44:14 EST 2019


Thanks for the link !
I already used this link in order to setup the environment :-)

I added —with-pdfixed flag to BMV2 install.

Thanks !
--  Frederic

> Le 1 févr. 2019 à 16:53, hemant at mnkcg.com a écrit :
> 
> I would just use p4c and its p4c-bm2-ss  which works to compile any code for the bmv2 backend.   Just use P4-16 P4 programs unless you have a specific P4-14 program to use.  
>  
> If you don’t mind, just purge all download and installs below and use Andy Fingerhut’s script to install p4c and the behavioral-model.  Both suffice to work with P4.
>  
>  https://github.com/jafingerhut/p4-guide/blob/master/bin/install-p4dev.sh#L67
>  
> The script has been tested on Ubuntu 16.04 and 18.04.
>  
> Hemant
>  
> From: P4-dev <p4-dev-bounces at lists.p4.org> On Behalf Of Frédéric LOUI
> Sent: Friday, February 01, 2019 5:13 AM
> To: p4-dev at lists.p4.org
> Subject: [P4-dev] Switch.p4 compilation
>  
> Hi !
>  
> I’m fairly new to p4 language so sorry if I could not find the complete answer using my Google-fu skills …
>  
> I studied various tutorial and manage to have the examples working.
> As an exercise, I would like to study switch.p4 reference program.
>  
> As a first step I’d like to compile and run switch.p4 reference here: https://github.com/p4lang/switch
>  
> The problem is that in my environment I installed:
>  
> * p4c able to compile p4_14 and p4_16
> * p4c-bm2-ss for simple_switch target
>  
> In switch.p4 it is referenced that I should use:p4c-bmv2 that can be found here: https://github.com/p4lang/p4c-bm
> In some thread I saw that p4-bmv2 is the official.  Compiler for p4_14.
>  
> So my question: can I use the more versatile p4c instead of p4-bmv2 in order to compile switch.p4 ?
> Or should I try to user p4c-bm-ss ? (Not sure if simple_switch target can be use the full fledge switch.p4 reference though :-) ) 
>  
> In that case, I’ll consider to install also p4c-bmv2 via https://github.com/p4lang/p4c-bm
>  
> Last question:
>  
> Is p4c-bm (for p4_14 program) can coexist in the same machine as p4c or should I take some precaution while installing both on the same machine ?
>  
> Again sorry if these are « simple » question. If the issue has been discussed many times before I’d like to get a referent link or doc.
>  
>  
> Thanks for your help !
>  
> All the best
> --  Frederic




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