Re: [dpdk-dev] [PATCH 2/2] net/sfc: add support for meson build

[Andrew Rybchenko <arybchenko@solarflare.com>]

On 02/02/2018 07:18 PM, Bruce Richardson wrote:
> On Fri, Feb 02, 2018 at 12:43:58PM +0000, Andrew Rybchenko wrote:
>> From: Ivan Malov <ivan.malov@oktetlabs.ru>
>>
>> Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
>> Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
>> ---
>>   drivers/net/meson.build          |  2 +-
>>   drivers/net/sfc/base/meson.build | 69 ++++++++++++++++++++++++++++++++++++++++
>>   drivers/net/sfc/meson.build      | 61 +++++++++++++++++++++++++++++++++++
>>   3 files changed, 131 insertions(+), 1 deletion(-)
>>   create mode 100644 drivers/net/sfc/base/meson.build
>>   create mode 100644 drivers/net/sfc/meson.build
> Hi,
>
> looks pretty good in general. I have a few comments below to improve
> things.
>
> Unfortunately, this will break the ARM builds in it's current form too
> (or at least it broke the builds using the cross-files that I tested).
> I think you need to add a check at the top of the driver meson.build
> file for unsupported architectures, and set "build = false" for those
> platforms.

Many thanks for review notes. Hopefully we have processed everything.
It looks like x86 is the common for 64-bit and 32-bit.
In theory we do not supported 32-bit x86 with make.
I've tried to build on 32-bit host with meson/ninja and the build fails
but earlier than our driver:

../dpdk-next-net/lib/librte_kni/rte_kni.c: In function ‘kni_allocate_mbufs’:
../dpdk-next-net/lib/librte_kni/rte_kni.c:669:2: error: size of unnamed 
array is negative
   RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_off) !=
   ^~~~~~~~~~~~~~~~
../dpdk-next-net/lib/librte_kni/rte_kni.c:671:2: error: size of unnamed 
array is negative
   RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_len) !=
   ^~~~~~~~~~~~~~~~
../dpdk-next-net/lib/librte_kni/rte_kni.c:673:2: error: size of unnamed 
array is negative
   RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, pkt_len) !=
   ^~~~~~~~~~~~~~~~
../dpdk-next-net/lib/librte_kni/rte_kni.c:675:2: error: size of unnamed 
array is negative
   RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, ol_flags) !=
   ^~~~~~~~~~~~~~~~
../dpdk-next-net/lib/librte_kni/rte_kni.c: At top level:
cc1: warning: unrecognized command line option ‘-Wno-format-truncation’
cc1: warning: unrecognized command line option 
‘-Wno-address-of-packed-member’
[26/498] Compiling C object 'lib/rte_port@sta/rte_port_kni.c.o'.
ninja: build stopped: subcommand failed.

It is Debian stretch. gcc (Debian 6.3.0-18) 6.3.0 20170516
Does the build on 32-bit x86 work for you?

bash$ meson --version
0.42.1
bash$ ninja --version
1.7.2

Build using make works fine.

Andrew.