mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 10:49:33 +00:00
![Roland Dreier](/assets/img/avatar_default.png)
In some circumstances (eg when running a build in an emacs shell buffer), I get a spew of messages like grep: writing output: Broken pipe from setlocalversion, because the "read" subshell apparently exits as soon as it reads one line and gives EPIPE to grep. It's not clear to me why this way of writing the check was used instead of just using grep -q to suppress output, but unless there is some deep reason I don't know, this way looks cleaner to me anyway, and gets rid of the ugly message spew. (I double checked at http://pubs.opengroup.org/onlinepubs/009604499/utilities/grep.html and "grep -q" is specified in POSIX / SuS, so hopefully even people cross-compiling the kernel on some bizarre host OS can't complain about this change) Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
176 lines
3.9 KiB
Bash
Executable file
176 lines
3.9 KiB
Bash
Executable file
#!/bin/sh
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#
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# This scripts adds local version information from the version
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# control systems git, mercurial (hg) and subversion (svn).
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#
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# If something goes wrong, send a mail the kernel build mailinglist
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# (see MAINTAINERS) and CC Nico Schottelius
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# <nico-linuxsetlocalversion -at- schottelius.org>.
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#
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#
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usage() {
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echo "Usage: $0 [--save-scmversion] [srctree]" >&2
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exit 1
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}
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scm_only=false
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srctree=.
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if test "$1" = "--save-scmversion"; then
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scm_only=true
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shift
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fi
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if test $# -gt 0; then
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srctree=$1
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shift
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fi
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if test $# -gt 0 -o ! -d "$srctree"; then
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usage
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fi
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scm_version()
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{
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local short
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short=false
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cd "$srctree"
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if test -e .scmversion; then
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cat .scmversion
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return
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fi
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if test "$1" = "--short"; then
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short=true
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fi
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# Check for git and a git repo.
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if test -d .git && head=`git rev-parse --verify --short HEAD 2>/dev/null`; then
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# If we are at a tagged commit (like "v2.6.30-rc6"), we ignore
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# it, because this version is defined in the top level Makefile.
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if [ -z "`git describe --exact-match 2>/dev/null`" ]; then
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# If only the short version is requested, don't bother
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# running further git commands
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if $short; then
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echo "+"
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return
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fi
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# If we are past a tagged commit (like
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# "v2.6.30-rc5-302-g72357d5"), we pretty print it.
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if atag="`git describe 2>/dev/null`"; then
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echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),$(NF))}'
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# If we don't have a tag at all we print -g{commitish}.
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else
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printf '%s%s' -g $head
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fi
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fi
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# Is this git on svn?
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if git config --get svn-remote.svn.url >/dev/null; then
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printf -- '-svn%s' "`git svn find-rev $head`"
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fi
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# Update index only on r/w media
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[ -w . ] && git update-index --refresh --unmerged > /dev/null
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# Check for uncommitted changes
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if git diff-index --name-only HEAD | grep -qv "^scripts/package"; then
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printf '%s' -dirty
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fi
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# All done with git
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return
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fi
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# Check for mercurial and a mercurial repo.
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if test -d .hg && hgid=`hg id 2>/dev/null`; then
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# Do we have an tagged version? If so, latesttagdistance == 1
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if [ "`hg log -r . --template '{latesttagdistance}'`" == "1" ]; then
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id=`hg log -r . --template '{latesttag}'`
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printf '%s%s' -hg "$id"
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else
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tag=`printf '%s' "$hgid" | cut -d' ' -f2`
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if [ -z "$tag" -o "$tag" = tip ]; then
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id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
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printf '%s%s' -hg "$id"
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fi
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fi
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# Are there uncommitted changes?
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# These are represented by + after the changeset id.
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case "$hgid" in
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*+|*+\ *) printf '%s' -dirty ;;
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esac
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# All done with mercurial
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return
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fi
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# Check for svn and a svn repo.
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if rev=`svn info 2>/dev/null | grep '^Last Changed Rev'`; then
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rev=`echo $rev | awk '{print $NF}'`
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printf -- '-svn%s' "$rev"
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# All done with svn
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return
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fi
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}
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collect_files()
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{
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local file res
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for file; do
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case "$file" in
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*\~*)
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continue
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;;
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esac
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if test -e "$file"; then
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res="$res$(cat "$file")"
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fi
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done
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echo "$res"
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}
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if $scm_only; then
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if test ! -e .scmversion; then
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res=$(scm_version)
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echo "$res" >.scmversion
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fi
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exit
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fi
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if test -e include/config/auto.conf; then
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. include/config/auto.conf
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else
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echo "Error: kernelrelease not valid - run 'make prepare' to update it"
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exit 1
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fi
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# localversion* files in the build and source directory
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res="$(collect_files localversion*)"
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if test ! "$srctree" -ef .; then
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res="$res$(collect_files "$srctree"/localversion*)"
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fi
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# CONFIG_LOCALVERSION and LOCALVERSION (if set)
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res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"
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# scm version string if not at a tagged commit
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if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
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# full scm version string
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res="$res$(scm_version)"
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else
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# append a plus sign if the repository is not in a clean
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# annotated or signed tagged state (as git describe only
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# looks at signed or annotated tags - git tag -a/-s) and
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# LOCALVERSION= is not specified
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if test "${LOCALVERSION+set}" != "set"; then
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scm=$(scm_version --short)
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res="$res${scm:++}"
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fi
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fi
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echo "$res"
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