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From: "Zhang, Tianfei" <tianfei.zhang@intel.com>
To: "Xu, Rosen" <rosen.xu@intel.com>, "Hussin, Mohamad Noor Alim"
<mohamad.noor.alim.hussin@intel.com>
CC: "dev@dpdk.org" <dev@dpdk.org>, "Huang, Wei" <wei.huang@intel.com>,
"stable@dpdk.org" <stable@dpdk.org>
Thread-Topic: [PATCH v2] ifpga/base/meson: fix looking for librt
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Date: Thu, 1 Jul 2021 13:18:52 +0000
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Subject: Re: [dpdk-dev] [PATCH v2] ifpga/base/meson: fix looking for librt
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Sender: "dev" <dev-bounces@dpdk.org>
> -----Original Message-----
> From: Xu, Rosen <rosen.xu@intel.com>
> Sent: 2021=1B$BG/=1B(B6=1B$B7n=1B(B30=1B$BF|=1B(B 18:03
> To: Hussin, Mohamad Noor Alim <mohamad.noor.alim.hussin@intel.com>;
> Zhang, Tianfei <tianfei.zhang@intel.com>
> Cc: dev@dpdk.org; Huang, Wei <wei.huang@intel.com>; stable@dpdk.org
> Subject: RE: [PATCH v2] ifpga/base/meson: fix looking for librt
>=20
> CC Tianfei, who is maintainer.
>=20
> > -----Original Message-----
> > From: Hussin, Mohamad Noor Alim
> <mohamad.noor.alim.hussin@intel.com>
> > Sent: Wednesday, June 30, 2021 17:26
> > To: Xu, Rosen <rosen.xu@intel.com>
> > Cc: dev@dpdk.org; Hussin, Mohamad Noor Alim
> > <mohamad.noor.alim.hussin@intel.com>; Huang, Wei
> > <wei.huang@intel.com>; stable@dpdk.org
> > Subject: [PATCH v2] ifpga/base/meson: fix looking for librt
> >
> > Finding with "librt" keyword would give the output with full path of
> > librt such as
> > /usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/librt.so
> > instead of -lrt in libdpdk.pc pkg-config file.
> >
> > Assume find_library() will prepend "lib", thus remove "lib" from "librt=
"
> > keyword. The output will shows as -lrt.
> >
> > This will cause an issue when compile DPDK app with static library as
> > the path of librt has been hard-coded in the libdpdk.pc file.
How to reproduce this issue?
> >
> > Fixes: e41856b515ce ("raw/ifpga/base: enhance driver reliability in
> > multi-
> > process")
> > Cc: wei.huang@intel.com
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Mohamad Noor Alim Hussin
> > <mohamad.noor.alim.hussin@intel.com>
> > ---
> > drivers/raw/ifpga/base/meson.build | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/raw/ifpga/base/meson.build
> > b/drivers/raw/ifpga/base/meson.build
> > index 8d27c6021..ce592a13a 100644
> > --- a/drivers/raw/ifpga/base/meson.build
> > +++ b/drivers/raw/ifpga/base/meson.build
> > @@ -27,7 +27,7 @@ sources =3D [
> >
> > rtdep =3D dependency('librt', required: false) if not rtdep.found()
> > - rtdep =3D cc.find_library('librt', required: false)
> > + rtdep =3D cc.find_library('rt', required: false)
> > endif
> > if not rtdep.found()
> > build =3D false
> > --
> > 2.17.1