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scripts: avoid pointless LICENSE churn

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I was wondering why a bot decided to force-push a commit to a PR of
mine. It turns out the script responsible for generating the LICENSE
file is not deterministic, so depending on random file system layout
we can end up regenerating the LICENSE without any actual change. For
example:

$ diff -u <(git show baf20676~1:LICENSE | sort) <(git show baf20676:LICENSE | sort)

shows that baf20676 didn't provide any change at all in the actual
contents, yet

$ git show --stat baf20676
commit baf20676bc
Author: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Date:   Wed Jan 22 21:42:44 2025 +0000

    Auto-update LICENSE file with current recipe licenses

 LICENSE | 256 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--------------------------------------------------------------
 1 file changed, 128 insertions(+), 128 deletions(-)
This commit is contained in:
Rasmus Villemoes 2025-01-29 09:37:50 +01:00
parent 4738bf97f8
commit 0602af4c78
1 changed files with 3 additions and 1 deletions
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4
scripts/generate-license-file
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@ -1,5 +1,7 @@
#!/bin/bash
export LC_ALL=C
# Create or clear the LICENSE file
echo "# License Information" > LICENSE
echo "" >> LICENSE
@ -7,7 +9,7 @@ echo "This file lists all licenses used by recipes in the meta-freescale layer."
echo "" >> LICENSE
# Find all .bb and .inc files and extract license information
find . -type f \( -name "*.bb" -o -name "*.inc" \) | while read -r file; do
find . -type f \( -name "*.bb" -o -name "*.inc" \) | sort | while read -r file; do
# Extract the license line from each recipe file, if it exists
license_line=$(grep -i "^LICENSE" "$file")
if [ -n "$license_line" ]; then