From d30878763ce1b5be453b563f2729d7333242e79b Mon Sep 17 00:00:00 2001 From: Allan McRae Date: Fri, 12 May 2017 12:41:20 +0200 Subject: makepkg: introduce SOURCE_DATE_EPOCH This patch introduces the SOURCE_DATE_EPOCH environmental variable. All files in a package are adjusted to have their modification dates set to the value of SOURCE_DATE_EPOCH, which defaults to "date +%s". Setting this variable allows a package that is built twice in the same environment to be (potentially) reproducible in that the checksum of the generated package file will be the same. Also adjust the compression of the mtree file to avoid gzip embedding a timestamp. Signed-off-by: Levente Polyak --- scripts/makepkg.sh.in | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/scripts/makepkg.sh.in b/scripts/makepkg.sh.in index c019ae3b..1f1217f4 100644 --- a/scripts/makepkg.sh.in +++ b/scripts/makepkg.sh.in @@ -87,6 +87,8 @@ SPLITPKG=0 SOURCEONLY=0 VERIFYSOURCE=0 +export SOURCE_DATE_EPOCH=${SOURCE_DATE_EPOCH:-$(date +%s)} + PACMAN_OPTS=() shopt -s extglob @@ -620,7 +622,6 @@ write_kv_pair() { } write_pkginfo() { - local builddate=$(date -u "+%s") if [[ -n $PACKAGER ]]; then local packager="$PACKAGER" else @@ -654,7 +655,7 @@ write_pkginfo() { write_kv_pair "pkgdesc" "$spd" write_kv_pair "url" "$url" - write_kv_pair "builddate" "$builddate" + write_kv_pair "builddate" "$SOURCE_DATE_EPOCH" write_kv_pair "packager" "$packager" write_kv_pair "size" "$size" write_kv_pair "arch" "$pkgarch" @@ -738,10 +739,14 @@ create_package() { [[ -f $pkg_file ]] && rm -f "$pkg_file" [[ -f $pkg_file.sig ]] && rm -f "$pkg_file.sig" + # ensure all elements of the package have the same mtime + find . -exec touch -h -d @$SOURCE_DATE_EPOCH {} + + msg2 "$(gettext "Generating .MTREE file...")" - list_package_files | LANG=C bsdtar -cnzf .MTREE --format=mtree \ + list_package_files | LANG=C bsdtar -cnf - --format=mtree \ --options='!all,use-set,type,uid,gid,mode,time,size,md5,sha256,link' \ - --null --files-from - --exclude .MTREE + --null --files-from - --exclude .MTREE | gzip -c -f -n > .MTREE + touch -d @$SOURCE_DATE_EPOCH .MTREE msg2 "$(gettext "Compressing package...")" # TODO: Maybe this can be set globally for robustness -- cgit v1.2.3-70-g09d2