3 # this script is used to regenerate a number of special build files
4 # based on either information contained in a file called .patch or
6 # The files involved are:
7 # .patchnum # information about the current checkout
8 # lib/Config_git.pl # holds some special configure settings related to git
9 # unpushed.h # header file used by patchlevel.h to store unpushed commits
11 existing_patchnum=`cat .patchnum 2>/dev/null`
12 existing_config=`cat lib/Config_git.pl 2>/dev/null`
13 existing_unpushed=`cat unpushed.h 2>/dev/null`
15 unpushed_commits='/*no-op*/'
16 if [ -s ".patch" ] ; then
17 read branch snapshot_created commit_id describe < .patch
19 extra_info="git_snapshot_date='$snapshot_created'"
20 commit_title='Snapshot of:'
21 elif [ -d ".git" ]; then
22 branch=`git branch | awk 'BEGIN{ORS=""} /\*/ { print $2 }'`
23 test -n "$branch" && remote=`git config branch.$branch.remote`
24 commit_id=`git rev-parse HEAD`
25 changed=`git diff-index --name-only HEAD`
26 describe=`git describe --tags`
27 commit_created=`git log -1 --pretty='format:%ci'`
28 new_patchnum="describe: $describe"
29 extra_info="git_commit_date='$commit_created'"
30 if [ -n "$branch" ] && [ -n "$remote" ]; then
31 unpushed_commit_list=`git cherry $remote/$branch | awk 'BEGIN{ORS=","} /+/ {print $2}' | sed -e 's/,$//'`
32 unpushed_commits=`git cherry $remote/$branch | awk 'BEGIN{ORS="\t\\\n"} /+/ {print ",\"" $2 "\""}'`
34 if [ -n "$unpushed_commits" ]; then
35 commit_title="Local Commit:"
36 ancestor=`git rev-parse $remote/$branch`
37 extra_info="$extra_info
38 git_ancestor='$ancestor'
39 git_unpushed='$unpushed_commit_list'"
43 if [ -n "$changed" ]; then
45 commit_title="Derived from:"
46 new_patchnum="$new_patchnum
47 status: uncommitted-changes"
49 test -z "$commit_title" && commit_title='Commit id:'
52 new_unpushed=`cat <<EOFTEXT
53 /*********************************************************************
54 * WARNING: unpushed.h is automatically generated by make_patchnum.sh *
55 * DO NOT EDIT DIRECTLY - edit make_patchnum.sh instead *
56 *********************************************************************/
57 #define PERL_GIT_UNPUSHED_COMMITS $unpushed_commits
58 /*leave-this-comment*/
61 new_config=`cat <<EOFDATA
62 #################################################################
63 # WARNING: lib/Config_git.pl is generated by make_patchnum.sh #
64 # DO NOT EDIT DIRECTLY - edit make_patchnum.sh instead #
65 #################################################################
66 \$Config::Git_Data=<<'ENDOFGIT';
67 git_commit_id='$commit_id'
68 git_describe='$describe'
70 git_uncommitted_changes='$changed'
71 git_commit_id_title='$commit_title'
76 # only update the files if necessary, other build product depends on these files
77 if [ "$existing_patchnum" != "$new_patchnum" ] || [ "$new_config" != "$existing_config" ] || [ "$existing_unpushed" != "$new_unpushed" ]; then
78 echo "Updating .patchnum and lib/Config_git.pl"
79 echo "$new_patchnum" > .patchnum
80 echo "$new_config" > lib/Config_git.pl
81 echo "$new_unpushed" > unpushed.h
83 echo "Reusing .patchnum and lib/Config_git.pl"