[dpdk-dev] [PATCH v5 2/3] build: use Python pmdinfogen

[Dmitry Kozlyuk]

Like for other build scripts, use Python interpreter to run pmdinfogen.
Adjust wrapper script accordingly and also don't suppress stderr from ar
and pmdinfogen.

Add python3-pyelftools to CI configuration. The package is available on
all major distributions. FreeBSD has no system requirements section in
its GSG. Currently neither Windows uses pmdinfogen, nor is COFF (PE)
supported.

Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk at gmail.com>
---
 .travis.yml                       | 2 +-
 buildtools/gen-pmdinfo-cfile.sh   | 6 +++---
 buildtools/meson.build            | 1 +
 doc/guides/linux_gsg/sys_reqs.rst | 6 ++++++
 drivers/meson.build               | 2 +-
 meson.build                       | 1 -
 6 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index d6eeab371..226db7590 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,7 +11,7 @@ addons:
   apt:
     update: true
     packages: &required_packages
-      - [libnuma-dev, python3-setuptools, python3-wheel, python3-pip, ninja-build]
+      - [libnuma-dev, python3-setuptools, python3-wheel, python3-pip, python3-pyelftools, ninja-build]
       - [libbsd-dev, libpcap-dev, libibverbs-dev, libcrypto++-dev, libfdt-dev, libjansson-dev]
 
 _aarch64_packages: &aarch64_packages
diff --git a/buildtools/gen-pmdinfo-cfile.sh b/buildtools/gen-pmdinfo-cfile.sh
index 43059cf36..109ee461e 100755
--- a/buildtools/gen-pmdinfo-cfile.sh
+++ b/buildtools/gen-pmdinfo-cfile.sh
@@ -4,11 +4,11 @@
 
 arfile=$1
 output=$2
-pmdinfogen=$3
+shift 2
+pmdinfogen=$*
 
 # The generated file must not be empty if compiled in pedantic mode
 echo 'static __attribute__((unused)) const char *generator = "'$0'";' > $output
 for ofile in `ar t $arfile` ; do
-	ar p $arfile $ofile | $pmdinfogen - - >> $output 2> /dev/null
+	ar p $arfile $ofile | $pmdinfogen - - >> $output
 done
-exit 0
diff --git a/buildtools/meson.build b/buildtools/meson.build
index 04808dabc..3a64b28b7 100644
--- a/buildtools/meson.build
+++ b/buildtools/meson.build
@@ -17,3 +17,4 @@ else
 endif
 map_to_win_cmd = py3 + files('map_to_win.py')
 sphinx_wrapper = py3 + files('call-sphinx-build.py')
+pmdinfogen = py3 + files('pmdinfogen.py')
diff --git a/doc/guides/linux_gsg/sys_reqs.rst b/doc/guides/linux_gsg/sys_reqs.rst
index 6b9f573fc..200212081 100644
--- a/doc/guides/linux_gsg/sys_reqs.rst
+++ b/doc/guides/linux_gsg/sys_reqs.rst
@@ -56,6 +56,12 @@ Compilation of the DPDK
     * If the packaged version is below the minimum version, the latest versions
       can be installed from Python's "pip" repository: ``pip3 install meson ninja``
 
+*   ``pyelftools`` (version 0.22+)
+
+    * For RHEL/Fedora systems it can be installed using ``dnf install python-pyelftools``
+
+    * For Ubuntu/Debian it can be installed using ``apt install python3-pyelftools``
+
 *   Library for handling NUMA (Non Uniform Memory Access).
 
     * ``numactl-devel`` in RHEL/Fedora;
diff --git a/drivers/meson.build b/drivers/meson.build
index 5f9526557..88364259d 100644
--- a/drivers/meson.build
+++ b/drivers/meson.build
@@ -137,7 +137,7 @@ foreach subpath:subdirs
 						command: [pmdinfo, tmp_lib.full_path(),
 							'@OUTPUT@', pmdinfogen],
 						output: out_filename,
-						depends: [pmdinfogen, tmp_lib])
+						depends: [tmp_lib])
 			endif
 
 			# now build the static driver
diff --git a/meson.build b/meson.build
index 61d9a4f5f..a6e8c09c2 100644
--- a/meson.build
+++ b/meson.build
@@ -45,7 +45,6 @@ subdir('buildtools')
 subdir('config')
 
 # build libs and drivers
-subdir('buildtools/pmdinfogen')
 subdir('lib')
 subdir('drivers')
 
-- 
2.28.0