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From: Bruce Richardson <bruce.richardson@intel.com>
To: Gregory Etelson <getelson@nvidia.com>
Cc: dev@dpdk.org, bluca@debian.org, christian.ehrhardt@canonical.com,
	david.marchand@redhat.com, ktraynor@redhat.com, matan@nvidia.com,
	rasland@nvidia.com, thomas@monjalon.net
Subject: Re: [dpdk-dev] [PATCH v4] build: add pkg-config validation
Date: Thu, 5 Nov 2020 13:17:37 +0000
Message-ID: <20201105131737.GC776@bricha3-MOBL.ger.corp.intel.com> (raw)
In-Reply-To: <20201105123704.15791-1-getelson@nvidia.com>

On Thu, Nov 05, 2020 at 02:37:03PM +0200, Gregory Etelson wrote:
> DPDK relies on pkg-config(1) to provide correct parameters for
> compiler and linker used in application build.
> Inaccurate build parameters, produced by pkg-config from DPDK .pc
> files could fail application build or cause unpredicted results
> during application runtime.
> 
> This patch validates host pkg-config utility and notifies about
> known issues.
> 
> Signed-off-by: Gregory Etelson <getelson@nvidia.com>
> ---

You can keep my ack from previous version.

Acked-by: Bruce Richardson <bruce.richardson@intel.com>

One small note is that I don't believe the 'exit $?' line at the end of the
script is necessary, that is default shell behaviour. However, it probably
doesn't hurt to have it explicitly there.

>  buildtools/pkg-config/meson.build           | 11 ++++++++
>  buildtools/pkg-config/pkgconfig-validate.sh | 29 +++++++++++++++++++++
>  doc/guides/linux_gsg/sys_reqs.rst           |  5 ++++
>  3 files changed, 45 insertions(+)
>  create mode 100755 buildtools/pkg-config/pkgconfig-validate.sh
> 
> diff --git a/buildtools/pkg-config/meson.build b/buildtools/pkg-config/meson.build
> index 5f19304289..4f907d7638 100644
> --- a/buildtools/pkg-config/meson.build
> +++ b/buildtools/pkg-config/meson.build
> @@ -53,3 +53,14 @@ This is required for a number of static inline functions in the public headers.'
>  # For static linking with dependencies as shared libraries,
>  # the internal static libraries must be flagged explicitly.
>  run_command(py3, 'set-static-linker-flags.py', check: true)
> +
> +pkgconf = find_program('pkg-config', 'pkgconf', required: false)
> +if (pkgconf.found())
> +	cmd = run_command('./pkgconfig-validate.sh', pkgconf.path(),
> +			   check:false)
> +	if cmd.returncode() != 0
> +		version = run_command(pkgconf, '--version')
> +		warning('invalid pkg-config version @0@'.format(
> +			version.stdout().strip()))
> +	endif
> +endif
> diff --git a/buildtools/pkg-config/pkgconfig-validate.sh b/buildtools/pkg-config/pkgconfig-validate.sh
> new file mode 100755
> index 0000000000..f5479f999f
> --- /dev/null
> +++ b/buildtools/pkg-config/pkgconfig-validate.sh
> @@ -0,0 +1,29 @@
> +#! /bin/sh
> +# SPDX-License-Identifier: BSD-3-Clause
> +
> +if [ "$#" -ne 1 ]; then
> +	echo "$0: no pkg-config parameter"
> +	exit 1
> +fi
> +PKGCONF="$1"
> +
> +# if pkgconf could not locate libdpdk.pc from existing PKG_CONFIG_PATH
> +# check meson template instead
> +# take the first located file
> +pc_file=$(find "$MESON_BUILD_ROOT" -type f -name 'libdpdk.pc' -print -quit)
> +if [ ! -f "$pc_file" ]; then
> +	echo "$0: cannot locate libdpdk.pc"
> +	exit 1
> +fi
> +pc_dir=$(dirname "$pc_file")
> +PKG_CONFIG_PATH="${PKG_CONFIG_PATH}:$pc_dir"
> +
> +# Statically linked private DPDK objects of form
> +# -l:file.a must be positioned between --whole-archive … --no-whole-archive
> +# linker parameters.
> +# Old pkg-config versions misplace --no-whole-archive parameter and put it
> +# next to --whole-archive.
> +PKG_CONFIG_PATH="$PKG_CONFIG_PATH" \
> +"$PKGCONF" --libs --static libdpdk | \
> +grep -q 'whole-archive.*l:lib.*no-whole-archive'
> +exit "$?"
> diff --git a/doc/guides/linux_gsg/sys_reqs.rst b/doc/guides/linux_gsg/sys_reqs.rst
> index 6ecdc04aa9..b67da05e13 100644
> --- a/doc/guides/linux_gsg/sys_reqs.rst
> +++ b/doc/guides/linux_gsg/sys_reqs.rst
> @@ -60,6 +60,11 @@ Compilation of the DPDK
>  
>  *   Linux kernel headers or sources required to build kernel modules.
>  
> +
> +**Known Issues:**
> +
> +*   pkg-config v0.27 supplied with RHEL-7 does not process correctly libdpdk.pc Libs.private section.
> +
>  .. note::
>  
>     Please ensure that the latest patches are applied to third party libraries
> -- 
> 2.28.0
> 

  reply	other threads:[~2020-11-05 13:17 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-29  9:16 [dpdk-dev] [PATCH] " Gregory Etelson
2020-11-01 10:01 ` Thomas Monjalon
2020-11-01 12:06   ` Gregory Etelson
2020-11-02  6:45 ` [dpdk-dev] [PATCH v2] " Gregory Etelson
2020-11-02 12:11   ` Bruce Richardson
2020-11-02 19:39     ` Gregory Etelson
2020-11-02 19:34 ` [dpdk-dev] [PATCH v3] " Gregory Etelson
2020-11-03 10:09   ` Bruce Richardson
2020-11-04  8:38     ` Gregory Etelson
2020-11-05 12:37 ` [dpdk-dev] [PATCH v4] " Gregory Etelson
2020-11-05 13:17   ` Bruce Richardson [this message]
2020-11-13 13:38   ` David Marchand
2020-11-13 15:16     ` Gregory Etelson
2020-11-13 15:32       ` David Marchand
2020-11-17 18:17 ` [dpdk-dev] [PATCH] doc: notify bug in pkg-config v0.27 Gregory Etelson
2020-11-26 15:42   ` [dpdk-dev] [PATCH v2 1/1] doc: add pkg-config requirement for applications Thomas Monjalon
2020-11-26 16:24     ` Bruce Richardson
2020-11-26 16:38       ` Thomas Monjalon
2020-11-26 16:43   ` [dpdk-dev] [PATCH v3 " Thomas Monjalon
2020-11-26 16:46     ` Bruce Richardson
2020-11-27  0:59       ` Thomas Monjalon

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