Add gn bootstrap to build system

Bootstraps gn wihout rebuild.

Change-Id: I09ee4d6b6f458f16f0d9ac18433823153ab75995
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

1 files changed, 39 insertions, 0 deletions

diff --git a/src/core/gn_run.pro b/src/core/gn_run.pro
new file mode 100644
index 000000000..c379f9510
--- /dev/null
+++ b/src/core/gn_run.pro
@@ -0,0 +1,39 @@
+isQtMinimum(5, 8) {
+    include($$QTWEBENGINE_OUT_ROOT/qtwebengine-config.pri)
+    QT_FOR_CONFIG += webengine-private
+}
+
+TEMPLATE = aux
+
+build_pass|!debug_and_release {
+
+    ninja_binary = ninja
+    runninja.target = run_ninja
+
+    !qtConfig(system-ninja) {
+        ninja_binary = $$shell_quote($$shell_path($$ninjaPath()))
+        buildninja.target = build_ninja
+        buildninja.commands = $$buildNinja()
+        QMAKE_EXTRA_TARGETS += buildninja
+        runninja.depends = buildninja
+    }
+
+    !qtConfig(system-gn) {
+        buildgn.target = build_gn
+        buildgn.commands = $$buildGn()
+        !qtConfig(system-ninja): buildgn.depends = buildninja
+        QMAKE_EXTRA_TARGETS += buildgn
+        runninja.depends = buildgn
+    }
+
+    runninja.commands = $$ninja_binary \$\(NINJAFLAGS\) -C $$shell_quote($$OUT_PWD/$$getConfigDir())
+    QMAKE_EXTRA_TARGETS += runninja
+
+    default_target.depends = buildgn
+
+    QMAKE_EXTRA_TARGETS += default_target
+} else {
+    # Special GNU make target for the meta Makefile that ensures that our debug and release Makefiles won't both run ninja in parallel.
+    notParallel.target = .NOTPARALLEL
+    QMAKE_EXTRA_TARGETS += notParallel
+}