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From: Thomas Monjalon <thomas@monjalon.net>
To: dev@dpdk.org
Cc: david.marchand@redhat.com, bruce.richardson@intel.com,
	Gregory Etelson <getelson@nvidia.com>
Subject: [dpdk-dev] [PATCH v2 1/1] doc: add pkg-config requirement for applications
Date: Thu, 26 Nov 2020 16:42:18 +0100
Message-ID: <20201126154218.1222717-1-thomas@monjalon.net> (raw)
In-Reply-To: <20201117181746.17904-1-getelson@nvidia.com>

From: Gregory Etelson <getelson@nvidia.com>

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.

Update system requirements doc about a bug in pkg-config v0.27
used in RHEL-7.

Signed-off-by: Gregory Etelson <getelson@nvidia.com>
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
---

v2: make a more global note about the need for pkg-config in app build

---
 doc/guides/linux_gsg/sys_reqs.rst | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/doc/guides/linux_gsg/sys_reqs.rst b/doc/guides/linux_gsg/sys_reqs.rst
index 6ecdc04aa9..ab38284950 100644
--- a/doc/guides/linux_gsg/sys_reqs.rst
+++ b/doc/guides/linux_gsg/sys_reqs.rst
@@ -94,6 +94,19 @@ found in that driver's documentation in the relevant DPDK guide document,
 e.g. :doc:`../nics/index`
 
 
+Building DPDK Applications
+--------------------------
+
+The tool pkg-config or pkgconf, integrated in most build systems,
+must be used to parse options and dependencies from libdpdk.pc.
+
+.. note::
+
+   pkg-config 0.27, supplied with RHEL-7,
+   does not process correctly Libs.private section,
+   resulting in misses in statically linked applications.
+
+
 Running DPDK Applications
 -------------------------
 
-- 
2.28.0


  reply	other threads:[~2020-11-26 15:42 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-29  9:16 [dpdk-dev] [PATCH] build: add pkg-config validation 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
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   ` Thomas Monjalon [this message]
2020-11-26 16:24     ` [dpdk-dev] [PATCH v2 1/1] doc: add pkg-config requirement for applications 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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