From 8fe9894f655fd79207c41673e1966cc4d4d101d1 Mon Sep 17 00:00:00 2001 From: "Yann E. MORIN" Date: Sun, 24 May 2020 12:30:48 +0200 Subject: [PATCH] suport/download: fix git wrapper with submodules on older git versions Older versions of git store the absolute path of the submodules' repository as stored in the super-project, e.g.: $ cat some-submodule/.git gitdir: /path/to/super-project/.git/modules/some-submodule Obviously, this is not very reproducible. More recent versions of git, however, store relative paths, which de-facto makes it reproducible. Fix older versions by replacing the absolute paths with relative ones. Signed-off-by: Yann E. MORIN --- support/download/git | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/support/download/git b/support/download/git index 075f665bbf..15d8c66e05 100755 --- a/support/download/git +++ b/support/download/git @@ -176,6 +176,19 @@ date="$( _git log -1 --pretty=format:%cD )" # There might be submodules, so fetch them. if [ ${recurse} -eq 1 ]; then _git submodule update --init --recursive + + # Older versions of git will store the absolute path of the git tree + # in the .git of submodules, while newer versions just use relative + # paths. Detect and fix the older variants to use relative paths, so + # that the archives are reproducible across a wider range of git + # versions. However, we can't do that if git is too old and uses + # full repositories for submodules. + cmd='printf "%s\n" "${path}/"' + for module_dir in $( _git submodule --quiet foreach "'${cmd}'" ); do + [ -f "${module_dir}/.git" ] || continue + relative_dir="$( sed -r -e 's,/+,/,g; s,[^/]+/,../,g' <<<"${module_dir}" )" + sed -r -i -e "s:^gitdir\: $(pwd)/:gitdir\: "${relative_dir}":" "${module_dir}/.git" + done fi # Generate the archive, sort with the C locale so that it is reproducible. -- 2.30.2