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Use SOURCE_DATE_EPOCH over unreproducible uname and date calls. #152

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Use SOURCE_DATE_EPOCH over unreproducible uname and date calls. #152

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3 changes: 3 additions & 0 deletions src/mkreleasehdr.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,9 @@
GIT_SHA1=`(git show-ref --head --hash=8 2> /dev/null || echo 00000000) | head -n1`
GIT_DIRTY=`git diff --no-ext-diff 2> /dev/null | wc -l`
BUILD_ID=`uname -n`"-"`date +%s`
if [ -n "$SOURCE_DATE_EPOCH" ]; then
BUILD_ID=$(date -u -d "@$SOURCE_DATE_EPOCH" +%s 2>/dev/null || date -u -r "$SOURCE_DATE_EPOCH" +%s 2>/dev/null || date -u %s)
fi
test -f release.h || touch release.h
(cat release.h | grep SHA1 | grep $GIT_SHA1) && \
(cat release.h | grep DIRTY | grep $GIT_DIRTY) && exit 0 # Already up-to-date
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