blob: 7be41f594832eccf711140cdbd6f7c3e65b3e04d [file] [log] [blame]
#!/bin/sh
#
# This code is licensed under the GPL version 2 or later. See
# the COPYING file in the top-level directory.
substat=".git-submodule-status"
command=$1
shift
maybe_modules="$@"
# if --with-git-submodules=ignore, do nothing
test "$command" = "ignore" && exit 0
test -z "$GIT" && GIT=git
cd "$(dirname "$0")/.."
update_error() {
echo "$0: $*"
echo
echo "Unable to automatically checkout GIT submodules '$modules'."
echo "If you require use of an alternative GIT binary (for example to"
echo "enable use of a transparent proxy), then please specify it by"
echo "running configure by with the '--with-git' argument. e.g."
echo
echo " $ ./configure --with-git='tsocks git'"
echo
echo "Alternatively you may disable automatic GIT submodule checkout"
echo "with:"
echo
echo " $ ./configure --with-git-submodules=validate"
echo
echo "and then manually update submodules prior to running make, with:"
echo
echo " $ scripts/git-submodule.sh update $modules"
echo
exit 1
}
validate_error() {
if test "$1" = "validate"; then
echo "GIT submodules checkout is out of date, and submodules"
echo "configured for validate only. Please run"
echo " scripts/git-submodule.sh update $maybe_modules"
echo "from the source directory or call configure with"
echo " --with-git-submodules=update"
echo "To disable GIT submodules validation, use"
echo " --with-git-submodules=ignore"
fi
exit 1
}
if test -n "$maybe_modules" && ! test -e ".git"
then
echo "$0: unexpectedly called with submodules but no git checkout exists"
exit 1
fi
modules=""
for m in $maybe_modules
do
$GIT submodule status $m 1> /dev/null 2>&1
if test $? = 0
then
modules="$modules $m"
else
echo "warn: ignoring non-existent submodule $m"
fi
done
case "$command" in
status|validate)
if test -z "$maybe_modules"
then
test -s ${substat} && validate_error "$command" || exit 0
fi
test -f "$substat" || validate_error "$command"
for module in $modules; do
CURSTATUS=$($GIT submodule status $module)
OLDSTATUS=$(cat $substat | grep $module)
if test "$CURSTATUS" != "$OLDSTATUS"; then
validate_error "$command"
fi
done
exit 0
;;
update)
if test -z "$maybe_modules"
then
test -e $substat || touch $substat
exit 0
fi
$GIT submodule update --init $modules 1>/dev/null
test $? -ne 0 && update_error "failed to update modules"
$GIT submodule status $modules > "${substat}"
test $? -ne 0 && update_error "failed to save git submodule status" >&2
;;
esac
exit 0