[dpdk-dev] [PATCH v2 1/1] doc: add pkg-config requirement for applications
Thomas Monjalon
thomas at monjalon.net
Thu Nov 26 16:42:18 CET 2020
From: Gregory Etelson <getelson at 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 at nvidia.com>
Signed-off-by: Thomas Monjalon <thomas at 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
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