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From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Thomas Monjalon <thomas@monjalon.net>,
	David Christensen <drc@linux.vnet.ibm.com>
Cc: arybchenko@solarflare.com, dev@dpdk.org, radhika.chirra@ibm.com,
	stable@dpdk.org, Vivian Kong <vivkong@ca.ibm.com>
Subject: Re: [dpdk-dev] [PATCH] ethdev: missing typecast from void in eth_dev_pci_specific_init
Date: Fri, 12 Apr 2019 18:13:16 +0100	[thread overview]
Message-ID: <a69d20af-f7e0-9095-e576-4a6211454e04@intel.com> (raw)
Message-ID: <20190412171316.yzzIFr8hRh-I8eemOf9eCtpg4gM5OTQV7AhsdVyXVWc@z> (raw)
In-Reply-To: <1832941.R5tAQzo2FV@xps>

On 4/10/2019 10:14 PM, Thomas Monjalon wrote:
> 10/04/2019 22:58, David Christensen:
>>> This is a duplicate of this patch:
>>>
>>> https://patches.dpdk.org/patch/52505/
>>>
>>> You are from 2 different Linux teams at IBM,
>>> you hit the same issue at the same time,
>>> you both miss to give an explanation,
>>> funny.
>>
>> We both work for infrastructure teams who are supporting a project team 
>> that is developing a DPDK application that runs across multiple CPU 
>> architectures and encountered the error.
>>
>> The error comes from g++ (Ubuntu 7.3.0-27ubuntu1~18.04) 7.3.0:
>>
>> [CXX]       g++ -o utils/pcap_handle.o -c utils/pcap_handle.cc -g3 
>> -ggdb3 -mcpu=native -mtune=native -isystem 
>> /home/rchirra/gen/io/ppc64include -std=gnu++11 -flax-vector-conversions 
>> -Werror -isystem /home/rchirra/gen/io
>>
>> In file included from drivers/pmd.cc:7:0:
>> /home/rchirra/gen/io/deps/dpdk/build/include/rte_ethdev_pci.h:
>> In function ‘int eth_dev_pci_specific_init(rte_eth_dev*, void*)’:
>> /home/rchirra/gen/io/deps/dpdk/build/include/rte_ethdev_pci.h:75:35: 
>> error: invalid conversion from ‘void*’ to ‘rte_pci_device*’ [-fpermissive]
>>    struct rte_pci_device *pci_dev = bus_device;
>>                                     ^~~~~~~~~~
>> make[1]: *** [drivers/pmd.o] Error 1
>>
>> Do you believe that more permissive compiler flags are the better answer?
> 
> No, we should not force any compiler flag of the application.
> We are even trying to support pedantic flags in the app.
> So it seems we must fix it.
> 
> We just need to change the title to mention it fixes the build for C++,
> and add the error message in the body.
> 

I agree our public headers should be usable from c++ applications, but this
header is not a public header.

Is the DPDK driver compiled with c++ in this case?
If so do we support (or have a target for support) that DPDK library itself can
be compiled by c++ compiler?


  parent reply	other threads:[~2019-04-12 17:13 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-10 20:16 David Christensen
2019-04-10 20:16 ` David Christensen
2019-04-10 20:29 ` Thomas Monjalon
2019-04-10 20:29   ` Thomas Monjalon
2019-04-10 20:58   ` David Christensen
2019-04-10 20:58     ` David Christensen
2019-04-10 21:14     ` Thomas Monjalon
2019-04-10 21:14       ` Thomas Monjalon
2019-04-12 17:13       ` Ferruh Yigit [this message]
2019-04-12 17:13         ` Ferruh Yigit
2019-04-10 21:00 ` Bruce Richardson
2019-04-10 21:00   ` Bruce Richardson
2019-04-10 23:08   ` Stephen Hemminger
2019-04-10 23:08     ` Stephen Hemminger
2019-04-12 17:09     ` Ferruh Yigit
2019-04-12 17:09       ` Ferruh Yigit
2019-04-12 17:15       ` Ananyev, Konstantin
2019-04-12 17:15         ` Ananyev, Konstantin
2019-04-12 17:25         ` Ferruh Yigit
2019-04-12 17:25           ` Ferruh Yigit
2019-04-12 17:29           ` Ferruh Yigit
2019-04-12 17:29             ` Ferruh Yigit
2019-04-12 21:31             ` Stephen Hemminger
2019-04-12 21:31               ` Stephen Hemminger
2019-04-15 16:00               ` Ferruh Yigit
2019-04-15 16:00                 ` Ferruh Yigit
2019-04-10 21:36 ` [dpdk-dev] [PATCH v2] ethdev: missing typecast causes C++ build error David Christensen
2019-04-10 21:36   ` David Christensen
2019-04-16 16:31   ` [dpdk-dev] [dpdk-stable] " Ferruh Yigit
2019-04-16 16:31     ` Ferruh Yigit
2019-04-16 16:39     ` Andrew Rybchenko
2019-04-16 16:39       ` Andrew Rybchenko
2019-04-16 16:46       ` Ananyev, Konstantin
2019-04-16 16:46         ` Ananyev, Konstantin
2019-04-16 21:19         ` Stephen Hemminger
2019-04-16 21:19           ` Stephen Hemminger
2019-04-16 21:50           ` David Christensen
2019-04-16 21:50             ` David Christensen

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