Dave Wallace 250bf9697f build: backport dpdk usertools support python3 only patch
- On Centos-8, 'make install-ext-deps' fails due to the
  bpr-mangle-shebangs script failing the dpdk usertools
  python scripts containing '#!/usr/bin/env python'.
  Backport usertools section of the DPDK patch which
  fixes this issue:
  http://git.dpdk.org/dpdk/commit/?id=3f6f83626cf4967a99382a6518a614a1bf3d2c20

- Also fix README to reflect name change of dpdk master
  branch to 'main'.

Type: fix

Change-Id: I487b1ff2da786a4a3fd8fb0f859436b0e1885f1b
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2020-10-17 08:26:48 +00:00

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Changes needed to DPDK are stored here as git patch files. Maintaining these
files using “git format-patch” and “git am” will make it simpler to manage
these changes. Patches made to DPDK should only be temporary until they are
accepted upstream and made available in the next DPDK release.
The following is the method used to generate these patches:
1. Git clone the package to a new directory:
# git clone http://dpdk.org/git/dpdk dpdk
2. Create a branch based on the release you wish to patch.
Note, “git tag” will show you all the release tags. The following example is
for release tag “v2.2.0” and will create a branch named “two_dot_two”.
# cd <root dir>
# git checkout -b two_dot_two v2.2.0
3. Apply all the existing patches to this new branch.
# git am </path/to/existing/patches/*>
4. Make your changes and commit your change to your repository.
# <edit files>
# git commit -s
5. Create the patch files with format-patch. This creates all the patch files
for your branch (two_dot_two), with your latest commits as the last ones.
# git format-patch main..two_dot_two
6. Copy, add and commit the new patches into the patches directory.