From mboxrd@z Thu Jan  1 00:00:00 1970
From: Luca Boccassi <bluca@debian.org>
Subject: Re: pkg-config file generated with meson
Date: Thu, 29 Nov 2018 14:07:52 +0000
Message-ID: <1543500472.5087.34.camel@debian.org>
References: <CAJFAV8y3PFptuSSi9K8AG6pZTqxrq417wuux5+F1wtG4hnnvFQ@mail.gmail.com>
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Cc: dev@dpdk.org
To: David Marchand <david.marchand@redhat.com>, bruce.richardson@intel.com
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On Thu, 2018-11-29 at 14:55 +0100, David Marchand wrote:
> Hello Bruce,
>=20
> I built v18.11 with meson and had a little look at the libdpdk.pc
> file.
> It looks like pkg-config works fine with --libs but is recursively
> opening
> libdpdk.pc when asking for the cflags:
>=20
> $ PKG_CONFIG_PATH=3Dbuild/meson-private:$PKG_CONFIG_PATH pkg-config --
> libs
> libdpdk
> -L/usr/local/lib64 -lrte_telemetry -lrte_bpf -lrte_flow_classify
> -lrte_pipeline -lrte_table -lrte_port -lrte_vhost -lrte_security
> -lrte_sched -lrte_reorder -lrte_rawdev -lrte_pdump -lrte_power
> -lrte_meter
> -lrte_member -lrte_lpm -lrte_latencystats -lrte_kni -lrte_jobstats
> -lrte_ip_frag -lrte_gso -lrte_gro -lrte_eventdev -lrte_efd
> -lrte_distributor -lrte_cryptodev -lrte_compressdev -lrte_cfgfile
> -lrte_bitratestats -lrte_bbdev -lrte_acl -lrte_timer -lrte_hash
> -lrte_metrics -lrte_pci -lrte_ethdev -lrte_net -lrte_mbuf
> -lrte_mempool
> -lrte_ring -lrte_eal -lrte_kvargs -lrte_cmdline
>=20
> $ PKG_CONFIG_PATH=3Dbuild/meson-private:$PKG_CONFIG_PATH pkg-config --
> cflags
> libdpdk
> Failed to open 'build/meson-private/libdpdk.pc': Too many open files
> Package 'libdpdk', required by 'DPDK', not found
>=20
> $ PKG_CONFIG_PATH=3Dbuild/meson-private:$PKG_CONFIG_PATH strace pkg-
> config
> --cflags libdpdk 2>&1|grep -c 'open(.*libdpdk.pc'
> 1022
>=20
> I must be doing something wrong...
> I use meson 0.47.2 and dpdk is only built locally, not installed on
> the
> system.

Hi,

It's true that there is "libdpdk" in the Requires.private section, and
probably shouldn't - but at least on Debian stable with pkg-config 0.29
it works fine despite that:

$ PKG_CONFIG_PATH=3D/tmp pkg-config --cflags libdpdk
-include rte_config.h -march=3Dcorei7 -I/usr/include/dpdk/../x86_64-linux-g=
nu/dpdk -I/usr/include/dpdk

Maybe a newer pkg-config version got smarter? Regardless we should look int=
o it

--=20
Kind regards,
Luca Boccassi