Initial commit: BobinkQtOpcUa app template with demo UI

Qt 6 QML application template using BobinkQtOpcUa as a submodule for
OPC UA connectivity. Includes discovery, PKI, auth, node monitoring
with read/write, and a multi-page demo UI.

1 files changed, 47 insertions, 0 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..b464cce
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,47 @@
+cmake_minimum_required(VERSION 3.16)
+project(BobinkQtOpcUaAppTemplate LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+# ── Qt setup (must come before BobinkQtOpcUa so AUTOMOC is enabled) ───────
+find_package(Qt6 6.10.2 REQUIRED COMPONENTS Quick)
+qt_standard_project_setup(REQUIRES 6.10.2)
+
+# ── BobinkQtOpcUa ──────────────────────────────────────────────────────────
+# Builds open62541 and QtOpcUa from submodules automatically on first
+# configure. Subsequent configures skip the dep builds (delete
+# build/deps/*-install/ to force a rebuild).
+#
+# Prerequisites: Qt 6.10.2+ with qt-cmake in PATH, OpenSSL dev headers,
+# Ninja, and initialized submodules:
+#   git submodule update --init --recursive
+add_subdirectory(deps/BobinkQtOpcUa)
+
+qt_add_executable(BobinkQtOpcUaAppTemplate main.cpp)
+qt_add_qml_module(BobinkQtOpcUaAppTemplate URI BobinkQtOpcUaAppTemplate VERSION 1.0 QML_FILES Main.qml NodePage.qml)
+
+# Executable goes to bin/ to avoid clashing with the QML module directory
+set_target_properties(BobinkQtOpcUaAppTemplate PROPERTIES
+    RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
+
+# Link against BobinkQtOpcUaplugin (not BobinkQtOpcUa). The "plugin"
+# target includes the QML type registration needed for `import Bobink`.
+target_link_libraries(BobinkQtOpcUaAppTemplate PRIVATE Qt6::Quick BobinkQtOpcUaplugin)
+
+# ── Runtime quirks ──────────────────────────────────────────────────────────
+# BobinkQtOpcUa builds open62541 as a shared library. The QtOpcUa backend
+# plugin (loaded at runtime via dlopen) needs to find it. These two lines
+# make that work during development:
+
+# 1. RPATH: embed the dep lib dirs so the dynamic linker finds libopen62541
+#    and libQt6OpcUa at runtime without installing them system-wide.
+set(CMAKE_BUILD_RPATH "${QTOPCUA_INSTALL_DIR}/lib"
+                      "${OPEN62541_INSTALL_DIR}/lib")
+
+# 2. Plugin path: Qt's plugin loader doesn't know about our locally-built
+#    QtOpcUa backend. Pass the path as a compile definition and call
+#    QCoreApplication::addLibraryPath(QTOPCUA_PLUGIN_PATH) in main.cpp
+#    *before* creating the QGuiApplication.
+target_compile_definitions(BobinkQtOpcUaAppTemplate PRIVATE
+    QTOPCUA_PLUGIN_PATH="${QTOPCUA_INSTALL_DIR}/plugins")