Compile QML files for syntax checking during build.

build_utils/waf/qml.py

@@ -25,8 +25,24 @@ import os.path
 from waflib.Configure import conf
 
 
+def configure(ctx):
+    ctx.find_program('qmlcachegen')
+
+
 @conf
 def qml_module(ctx, source):
     assert source.endswith('.qml')
 
     ctx.static_file(source)
+
+    # Compiling QML files currently only provides syntax checking during the build phase. The files
+    # are not actually used, unless packaged into and loaded from a Qt resource file
+    # (https://doc.qt.io/qt-5/qtquick-deployment.html#ahead-of-time-compilation)
+    source_node = ctx.path.find_resource(source)
+    target_node = ctx.path.find_or_declare(source + 'c')
+    ctx(
+        rule=' '.join(['${QMLCACHEGEN}', '-o', '${TGT}', '${SRC[0]}']),
+        source=[source_node],
+        target=[target_node],
+    )
+    #ctx.install_files(os.path.join(ctx.env.LIBDIR, target_node.parent.path_from(ctx.bldnode)), target_node)