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From: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Date: Mon, 2 Mar 2020 16:13:56 +0800
Message-ID: <CAMDZJNVZoCAWRbGaFgsWYnHj=vfkCOi_L3PgM8LMT0sgBdgBOQ@mail.gmail.com>
To: Ali Alnubani <alialnu@mellanox.com>
Cc: "stable@dpdk.org" <stable@dpdk.org>, Matan Azrad <matan@mellanox.com>,
"dev@dpdk.org" <dev@dpdk.org>
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Subject: Re: [dpdk-dev] [dpdk v1] net/mlx5: fix possible building error
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On Mon, Mar 2, 2020 at 3:35 PM Ali Alnubani <alialnu@mellanox.com> wrote:
>
> > -----Original Message-----
> > From: Tonghao Zhang <xiangxia.m.yue@gmail.com>
> > Sent: Monday, March 2, 2020 2:23 AM
> > To: Ali Alnubani <alialnu@mellanox.com>
> > Cc: stable@dpdk.org; Matan Azrad <matan@mellanox.com>; dev@dpdk.org
> > Subject: Re: [dpdk-dev] [dpdk v1] net/mlx5: fix possible building error
> >
> > On Mon, Mar 2, 2020 at 1:09 AM Ali Alnubani <alialnu@mellanox.com>
> > wrote:
> > >
> > > Hi Tonghao,
> > >
> > > > -----Original Message-----
> > > > From: dev <dev-bounces@dpdk.org> On Behalf Of
> > > > xiangxia.m.yue@gmail.com
> > > > Sent: Saturday, February 29, 2020 12:27 PM
> > > > To: Matan Azrad <matan@mellanox.com>; dev@dpdk.org
> > > > Cc: Tonghao Zhang <xiangxia.m.yue@gmail.com>; stable@dpdk.org
> > > > Subject: [dpdk-dev] [dpdk v1] net/mlx5: fix possible building error
> > > >
> > > > From: Tonghao Zhang <xiangxia.m.yue@gmail.com>
> > > >
> > > > When setting the CONFIG_RTE_BUILD_SHARED_LIB to y, and build the
> > > > mlx5 pmd, there is a building error.
> > > > To fix it, add RTE_IBVERBS_LINK_DLOPEN to include relative codes.
> > > >
> > > > > mlx5_common.o: In function `mlx5_glue_init':
> > > > > drivers/common/mlx5/mlx5_common.c:324: undefined reference to
> > > > `dlclose'
> > > >
> > > > Fixes: 7b4f1e6bd367 ("common/mlx5: introduce common library")
> > > > Cc: stable@dpdk.org
> > > >
> > > > Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
> > > > ---
> > > > drivers/common/mlx5/mlx5_common.c | 5 +++--
> > > > 1 file changed, 3 insertions(+), 2 deletions(-)
> > > >
> > >
> > > I test this case on multiple environments and don't see the build failure.
> > Can you please provide more information about yours, and how to
> > reproduce this?
> > Hi Ali,
> > I use the dpdk-next-net, and the last commit id is
> > d7142fbae16f185e11bfa44be061399afc40a1be.
> > The build config is show as below:
> >
> > diff --git a/config/common_base b/config/common_base index
> > 7ca2f28..4bd5126 100644
> > --- a/config/common_base
> > +++ b/config/common_base
> > @@ -57,7 +57,7 @@ CONFIG_RTE_ENABLE_LTO=n # # Compile to share
> > library # -CONFIG_RTE_BUILD_SHARED_LIB=n
> > +CONFIG_RTE_BUILD_SHARED_LIB=y
> >
> > #
> > # Use newest code breaking previous ABI @@ -363,7 +363,7 @@
> > CONFIG_RTE_LIBRTE_MLX4_DEBUG=n # Compile burst-oriented Mellanox
> > ConnectX-4, ConnectX-5, # ConnectX-6 & BlueField (MLX5) PMD # -
> > CONFIG_RTE_LIBRTE_MLX5_PMD=n
> > +CONFIG_RTE_LIBRTE_MLX5_PMD=y
> > CONFIG_RTE_LIBRTE_MLX5_DEBUG=n
> >
> > #
> >
> > The building failure log show:
> > LD librte_common_mlx5.so.20.0.1
> > mlx5_common.o: In function `mlx5_glue_init':
> > /root/zth/myshell/dpdk-next-
> > net/drivers/common/mlx5/mlx5_common.c:324:
> > undefined reference to `dlclose'
> > collect2: error: ld returned 1 exit status
> >
>
> Do you mind sharing which OS are you using, which gcc/clang version, whether you have MLNX_OFED or rdma-core installed, and which version?
1. CentOS Linux release 7.6.1810 (Core)
2. kernel 3.10.0-957.1.3.el7.x86_64
3. OFED 4.7-3.2.9
4. FW 16.26.4012
5. gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-36)
6. build the dpdk with x86_64-native-linuxapp-gcc
> Thanks,
> Ali