Put a system-wide lock on the build directory.

So that two qbs instances can't overwrite each other's
build graphs. In practice, this is probably most relevant
for IDEs, as these hold a build graph for potentially long
periods of time.
Facilitates QLockFile that was introduced in Qt 5.1. For older
Qt versions, no locking happens.

Task-number: QBS-162
Change-Id: Ib598617fb1742eb57b6a017f40b9631d1d54e627
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/tests/auto/api/testdata/buildgraph-locking/project.qbs b/tests/auto/api/testdata/buildgraph-locking/project.qbs
new file mode 100644
index 000000000..e08b008bc
--- /dev/null
+++ b/tests/auto/api/testdata/buildgraph-locking/project.qbs
@@ -0,0 +1,4 @@
+import qbs
+
+Project {
+}