Merge remote-tracking branch 'remotes/armbru/tags/pull-monitor-2018-06-18' into staging

[qemu.git] / scripts / git-submodule.sh

diff --git a/scripts/git-submodule.sh b/scripts/git-submodule.sh
index 039f782d8140763befc5f98af8034d90906d84ea..807ca0b4f80c22b12bc131474b9e4a126b018e1b 100755 (executable)
--- a/scripts/git-submodule.sh
+++ b/scripts/git-submodule.sh
@@ -7,7 +7,7 @@ substat=".git-submodule-status"
 
 command=$1
 shift
-modules="$@"
+maybe_modules="$@"
 
 test -z "$GIT" && GIT=git
 
@@ -21,16 +21,31 @@ error() {
     echo
     echo " $ ./configure --with-git='tsocks git'"
     echo
+    echo "Alternatively you may disable automatic GIT submodule checkout"
+    echo "with:"
+    echo
+    echo " $ ./configure --disable-git-update"
+    echo
+    echo "and then manually update submodules prior to running make, with:"
+    echo
+    echo " $ scripts/git-submodule.sh update $modules"
+    echo
     exit 1
 }
 
-if test -z "$modules"
-then
-    test -e $substat || touch $substat
-    exit 0
-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
 
-if ! test -e ".git"
+if test -n "$maybe_modules" && ! test -e ".git"
 then
     echo "$0: unexpectedly called with submodules but no git checkout exists"
     exit 1
@@ -38,14 +53,24 @@ fi
 
 case "$command" in
 status)
+    if test -z "$maybe_modules"
+    then
+         test -s ${substat} && exit 1 || exit 0
+    fi
+
     test -f "$substat" || exit 1
-    trap "rm -f ${substat}.tmp" EXIT
-    $GIT submodule status $modules > "${substat}.tmp"
-    test $? -ne 0 && error "failed to query git submodule status"
-    diff "${substat}" "${substat}.tmp" >/dev/null
+    CURSTATUS=`$GIT submodule status $modules`
+    OLDSTATUS=`cat $substat`
+    test "$CURSTATUS" = "$OLDSTATUS"
     exit $?
     ;;
 update)
+    if test -z "$maybe_modules"
+    then
+        test -e $substat || touch $substat
+        exit 0
+    fi
+
     $GIT submodule update --init $modules 1>/dev/null
     test $? -ne 0 && error "failed to update modules"