| #!/bin/sh |
| # SPDX-License-Identifier: GPL-2.0 |
| |
| scm_version() |
| { |
| # Check for git and a git repo. |
| if test -z "$(git rev-parse --show-cdup 2>/dev/null)" && |
| head="$(git rev-parse --verify HEAD 2>/dev/null)"; then |
| # If we are at a tagged commit, we ignore it. |
| if [ -z "$(git describe --exact-match 2>/dev/null)" ]; then |
| # Add -g and 8 hex chars. |
| printf -- '-g%.8s' "$head" |
| fi |
| # Check for uncommitted changes. |
| # This script must avoid any write attempt to the source tree, |
| # which might be read-only. |
| # You cannot use 'git describe --dirty' because it tries to |
| # create .git/index.lock . |
| # First, with git-status, but --no-optional-locks is only |
| # supported in git >= 2.14, so fall back to git-diff-index if |
| # it fails. Note that git-diff-index does not refresh the |
| # index, so it may give misleading results. See |
| # git-update-index(1), git-diff-index(1), and git-status(1). |
| if { |
| git --no-optional-locks status -uno --porcelain 2>/dev/null || |
| git diff-index --name-only HEAD |
| } | read dummy; then |
| printf '%s' -dirty |
| fi |
| fi |
| } |
| |
| if [ -n "$EROFS_UTILS_VERSION" ]; then |
| echo "$EROFS_UTILS_VERSION" |
| else |
| echo $(head -n1 VERSION)$(scm_version) |
| fi |
