/usr/bin/fp-fix-timestamps is in fp-utils 3.0.4+dfsg-18.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 | #!/bin/sh
# This script is meant to be used by source packages in the Free Pascal stack
# in Debian and derivatives. The aim of this script is to fix the timestamps of
# patched files (with respect to upstream) that would otherwise end up changing
# the timestamp stored in ppu files. This timestamp in ppu files has two
# issues: 1) it deteriorates reproducible builds. 2) reverse dependent packages
# that also build ppu files may believe that the source has changed and either
# require recompilation of the source or at least require recalculation all the
# time.
#
# See also: https://wiki.debian.org/ReproducibleBuilds/TimestampsInPPUGeneratedByFPC
set -e
myTmpFile=$(mktemp)
myNewRef=$(mktemp)
myOldRefSorted=$(mktemp)
ReferenceFile=debian/source/timestamps
trap 'rm $myTmpFile $myNewRef $myOldRefSorted' 0
if [ ! -f debian/source/format ] ; then
echo "debian/source/format not found: $0 only works if it can check the Debian source format."
return 1
fi
if [ "$(cat debian/source/format)" != "3.0 (quilt)" ] ; then
echo "debian/source/format is not 3.0 (quilt): $0 doesn't know how to proceed."
return 1
fi
checkAgainstRef(){
diff -q $myOldRefSorted $myNewRef > /dev/null
}
makeNewRef(){
now="$(date --iso-8601='minutes' --universal)"
if [ -f $ReferenceFile ] ; then
cat $ReferenceFile | LC_ALL=C.UTF-8 sort > $myOldRefSorted
fi
for FILE in $fpcFiles ; do
FILE=${FILE#*/}
existingFile="$(grep $FILE $myOldRefSorted || true)"
if [ -z "$existingFile" ] ; then
echo "$FILE $now" >> $myTmpFile
else
echo "$existingFile" >> $myTmpFile
fi
done
cat $myTmpFile | LC_ALL=C.UTF-8 sort | uniq > $myNewRef
}
updateRef(){
if [ ! -d "$(dirname $ReferenceFile)" ] ; then
mkdir "$(dirname $ReferenceFile)"
fi
cat $myNewRef > $ReferenceFile
}
# We need something smarter for commented out patches I guess. Warning,
# checking d/p/series alone is not enough, see man dpkg-source. Maybe what can
# be done is that we use dpkg-parsechangelog to extract the date of the
# packaging and in the check option verify that those files are actually newer
# than that. Unfortunately, that also depends on the way-of-working.
fpcFiles="$(rgrep "^+++" debian/patches | awk '{print $2}' | grep -e "\.pas$" -e "\.inc$" -e "\.pp$" | sort | uniq)"
if [ -z "$fpcFiles" ] ; then
echo "Nothing to do as no patched Free Pascal source files were found."
return 0
fi
makeNewRef
case $1 in
check)
if checkAgainstRef ; then
echo "Reference file up-to-date"
else
echo "Reference file needs updating"
return 1
fi
;;
update)
if ! checkAgainstRef ; then
updateRef
else
echo "No update needed"
fi
;;
touch)
awk '{system("touch " $1 " -d" $2)}' $ReferenceFile
;;
*)
echo "No input arguments given"
return 1
;;
esac
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