1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0-only
3
4 set -eu
5
6 diff_patch=$1
7
8 mkdir -p "$(dirname "${diff_patch}")"
9
10 git -C "${srctree:-.}" diff HEAD > "${diff_patch}"
11
12 if [ ! -s "${diff_patch}" ] ||
13 [ -z "$(git -C "${srctree:-.}" ls-files --other --exclude-standard | head -n1)" ]; then
14 exit
15 fi
16
17 # The source tarball, which is generated by 'git archive', contains everything
18 # you committed in the repository. If you have local diff ('git diff HEAD'),
19 # it will go into ${diff_patch}. If untracked files are remaining, the resulting
20 # source package may not be correct.
21 #
22 # Examples:
23 # - You modified a source file to add #include "new-header.h"
24 # but forgot to add new-header.h
25 # - You modified a Makefile to add 'obj-$(CONFIG_FOO) += new-dirver.o'
26 # but you forgot to add new-driver.c
27 #
28 # You need to commit them, or at least stage them by 'git add'.
29 #
30 # This script does not take care of untracked files because doing so would
31 # introduce additional complexity. Instead, print a warning message here if
32 # untracked files are found.
33 # If all untracked files are just garbage, you can ignore this warning.
34 echo >&2 "============================ WARNING ============================"
35 echo >&2 "Your working tree has diff from HEAD, and also untracked file(s)."
36 echo >&2 "Please make sure you did 'git add' for all new files you need in"
37 echo >&2 "the source package."
38 echo >&2 "================================================================="
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