Add option to retain sources when generating QML cache

By default any .qrc files are filtered and QML and JS sources dropped
when generating the cache. The new QTQUICK_COMPILER_RETAINED_RESOURCES
option allows the specification of .qrc files to be kept as they are.
The source fils specified in them will be available to the application.

Change-Id: If45bcd95c29fe4b91f5817573964ff55b1db8a00
Fixes: QTBUG-72430
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

4 files changed, 18 insertions, 0 deletions

diff --git a/tests/auto/qml/qmlcachegen/Retain.qml b/tests/auto/qml/qmlcachegen/Retain.qml
new file mode 100644
index 0000000000..0e69012662
--- /dev/null
+++ b/tests/auto/qml/qmlcachegen/Retain.qml
@@ -0,0 +1,2 @@
+import QtQml 2.0
+QtObject {}
diff --git a/tests/auto/qml/qmlcachegen/qmlcachegen.pro b/tests/auto/qml/qmlcachegen/qmlcachegen.pro
index 7f7b3128cf..c7820ac1cd 100644
--- a/tests/auto/qml/qmlcachegen/qmlcachegen.pro
+++ b/tests/auto/qml/qmlcachegen/qmlcachegen.pro
@@ -21,4 +21,7 @@ RESOURCES += Enums.qml
 
 RESOURCES += jsmoduleimport.qml script.mjs
 
+RESOURCES += retain.qrc
+QTQUICK_COMPILER_RETAINED_RESOURCES += retain.qrc
+
 QT += core-private qml-private testlib
diff --git a/tests/auto/qml/qmlcachegen/retain.qrc b/tests/auto/qml/qmlcachegen/retain.qrc
new file mode 100644
index 0000000000..af042b25d8
--- /dev/null
+++ b/tests/auto/qml/qmlcachegen/retain.qrc
@@ -0,0 +1,5 @@
+<RCC>
+    <qresource prefix="/">
+        <file>Retain.qml</file>
+    </qresource>
+</RCC>
diff --git a/tests/auto/qml/qmlcachegen/tst_qmlcachegen.cpp b/tests/auto/qml/qmlcachegen/tst_qmlcachegen.cpp
index 97ac466e94..8cfa4cb6af 100644
--- a/tests/auto/qml/qmlcachegen/tst_qmlcachegen.cpp
+++ b/tests/auto/qml/qmlcachegen/tst_qmlcachegen.cpp
@@ -52,6 +52,7 @@ private slots:
     void aheadOfTimeCompilation();
     void functionExpressions();
     void versionChecksForAheadOfTimeUnits();
+    void retainedResources();
 
     void workerScripts();
 
@@ -392,6 +393,13 @@ void tst_qmlcachegen::versionChecksForAheadOfTimeUnits()
     QQmlMetaType::removeCachedUnitLookupFunction(testHandler);
 }
 
+void tst_qmlcachegen::retainedResources()
+{
+    QFile file(":/Retain.qml");
+    QVERIFY(file.open(QIODevice::ReadOnly));
+    QVERIFY(file.readAll().startsWith("import QtQml 2.0"));
+}
+
 void tst_qmlcachegen::workerScripts()
 {
     QVERIFY(QFile::exists(":/workerscripts/worker.js"));