| 1 | #!/bin/sh |
| 2 | # SPDX-License-Identifier: GPL-2.0 |
| 3 | # |
| 4 | # This scripts adds local version information from the version |
| 5 | # control systems git, mercurial (hg) and subversion (svn). |
| 6 | # |
| 7 | # If something goes wrong, send a mail the kernel build mailinglist |
| 8 | # (see MAINTAINERS) and CC Nico Schottelius |
| 9 | # <nico-linuxsetlocalversion -at- schottelius.org>. |
| 10 | # |
| 11 | # |
| 12 | |
| 13 | usage() { |
| 14 | echo "Usage: $0 [--save-scmversion] [srctree]" >&2 |
| 15 | exit 1 |
| 16 | } |
| 17 | |
| 18 | scm_only=false |
| 19 | srctree=. |
| 20 | if test "$1" = "--save-scmversion"; then |
| 21 | scm_only=true |
| 22 | shift |
| 23 | fi |
| 24 | if test $# -gt 0; then |
| 25 | srctree=$1 |
| 26 | shift |
| 27 | fi |
| 28 | if test $# -gt 0 -o ! -d "$srctree"; then |
| 29 | usage |
| 30 | fi |
| 31 | |
| 32 | scm_version() |
| 33 | { |
| 34 | local short |
| 35 | short=false |
| 36 | |
| 37 | cd "$srctree" |
| 38 | if test -e .scmversion; then |
| 39 | cat .scmversion |
| 40 | return |
| 41 | fi |
| 42 | if test "$1" = "--short"; then |
| 43 | short=true |
| 44 | fi |
| 45 | |
| 46 | # Check for git and a git repo. |
| 47 | if test -z "$(git rev-parse --show-cdup 2>/dev/null)" && |
| 48 | head=$(git rev-parse --verify HEAD 2>/dev/null); then |
| 49 | |
| 50 | # If we are at a tagged commit (like "v2.6.30-rc6"), we ignore |
| 51 | # it, because this version is defined in the top level Makefile. |
| 52 | if [ -z "$(git describe --exact-match 2>/dev/null)" ]; then |
| 53 | |
| 54 | # If only the short version is requested, don't bother |
| 55 | # running further git commands |
| 56 | if $short; then |
| 57 | echo "+" |
| 58 | return |
| 59 | fi |
| 60 | # If we are past a tagged commit (like |
| 61 | # "v2.6.30-rc5-302-g72357d5"), we pretty print it. |
| 62 | if atag="$(git describe 2>/dev/null)"; then |
| 63 | echo "$atag" | awk -F- '{printf("-%05d", $(NF-1))}' |
| 64 | fi |
| 65 | |
| 66 | # Add -g and exactly 12 hex chars. |
| 67 | printf '%s%s' -g "$(echo $head | cut -c1-12)" |
| 68 | fi |
| 69 | |
| 70 | # Check for uncommitted changes. |
| 71 | # This script must avoid any write attempt to the source tree, |
| 72 | # which might be read-only. |
| 73 | # You cannot use 'git describe --dirty' because it tries to |
| 74 | # create .git/index.lock . |
| 75 | # First, with git-status, but --no-optional-locks is only |
| 76 | # supported in git >= 2.14, so fall back to git-diff-index if |
| 77 | # it fails. Note that git-diff-index does not refresh the |
| 78 | # index, so it may give misleading results. See |
| 79 | # git-update-index(1), git-diff-index(1), and git-status(1). |
| 80 | if { |
| 81 | git --no-optional-locks status -uno --porcelain 2>/dev/null || |
| 82 | git diff-index --name-only HEAD |
| 83 | } | read dummy; then |
| 84 | printf '%s' -dirty |
| 85 | fi |
| 86 | fi |
| 87 | } |
| 88 | |
| 89 | collect_files() |
| 90 | { |
| 91 | local file res= |
| 92 | |
| 93 | for file; do |
| 94 | case "$file" in |
| 95 | *\~*) |
| 96 | continue |
| 97 | ;; |
| 98 | esac |
| 99 | if test -e "$file"; then |
| 100 | res="$res$(cat "$file")" |
| 101 | fi |
| 102 | done |
| 103 | echo "$res" |
| 104 | } |
| 105 | |
| 106 | if $scm_only; then |
| 107 | if test ! -e .scmversion; then |
| 108 | res=$(scm_version) |
| 109 | echo "$res" >.scmversion |
| 110 | fi |
| 111 | exit |
| 112 | fi |
| 113 | |
| 114 | if test -e include/config/auto.conf; then |
| 115 | . include/config/auto.conf |
| 116 | else |
| 117 | echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2 |
| 118 | exit 1 |
| 119 | fi |
| 120 | |
| 121 | # localversion* files in the build and source directory |
| 122 | res="$(collect_files localversion*)" |
| 123 | if test ! "$srctree" -ef .; then |
| 124 | res="$res$(collect_files "$srctree"/localversion*)" |
| 125 | fi |
| 126 | |
| 127 | # CONFIG_LOCALVERSION and LOCALVERSION (if set) |
| 128 | res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}" |
| 129 | |
| 130 | # scm version string if not at a tagged commit |
| 131 | if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then |
| 132 | # full scm version string |
| 133 | res="$res$(scm_version)" |
| 134 | elif [ "${LOCALVERSION+set}" != "set" ]; then |
| 135 | # If the variable LOCALVERSION is not set, append a plus |
| 136 | # sign if the repository is not in a clean annotated or |
| 137 | # signed tagged state (as git describe only looks at signed |
| 138 | # or annotated tags - git tag -a/-s). |
| 139 | # |
| 140 | # If the variable LOCALVERSION is set (including being set |
| 141 | # to an empty string), we don't want to append a plus sign. |
| 142 | scm=$(scm_version --short) |
| 143 | res="$res${scm:++}" |
| 144 | fi |
| 145 | |
| 146 | echo "$res" |