Introduce ECMQmlModule.cmake

This contains some helper functions to make it easier to create QML
modules through CMake. It takes care of several things that currently
need to be done manually.

It adds four tests for the four primary ways that it can be used,
either as shared/static library and with or without C++ plugin.

11 files changed, 162 insertions, 0 deletions

diff --git a/tests/ECMQmlModuleTest/CMakeLists.txt b/tests/ECMQmlModuleTest/CMakeLists.txt
new file mode 100644
index 00000000..49d76594
--- /dev/null
+++ b/tests/ECMQmlModuleTest/CMakeLists.txt
@@ -0,0 +1,32 @@
+#
+# SPDX-FileCopyrightText: 2021 Arjen Hiemstra <ahiemstra@heimr.nl>
+#
+# SPDX-License-Identifier: BSD-3-Clause
+
+project(extra-cmake-modules)
+cmake_minimum_required(VERSION 3.5)
+
+set(ECM_MODULE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../../modules)
+set(CMAKE_MODULE_PATH "${ECM_FIND_MODULE_DIR}" "${ECM_MODULE_DIR}")
+
+find_package(Qt5 REQUIRED COMPONENTS Qml)
+include(ECMQmlModule)
+
+if(QML_ONLY)
+    ecm_add_qml_module(TestModule URI Test NO_PLUGIN)
+else()
+    ecm_add_qml_module(TestModule URI Test)
+    target_sources(TestModule PRIVATE qmlmodule.cpp)
+    target_link_libraries(TestModule Qt5::Qml)
+endif()
+
+if (DEPENDS)
+    ecm_add_qml_module_dependencies(TestModule DEPENDS OtherTest)
+endif()
+
+ecm_target_qml_sources(TestModule SOURCES QmlModule.qml)
+
+ecm_finalize_qml_module(TestModule DESTINATION "test")
+
+# this will be run by CTest
+configure_file(check.cmake.in "${CMAKE_CURRENT_BINARY_DIR}/check.cmake" @ONLY)
diff --git a/tests/ECMQmlModuleTest/QmlModule.qml b/tests/ECMQmlModuleTest/QmlModule.qml
new file mode 100644
index 00000000..ce16c9db
--- /dev/null
+++ b/tests/ECMQmlModuleTest/QmlModule.qml
@@ -0,0 +1,11 @@
+/**
+ * SPDX-FileCopyrightText: 2021 Arjen Hiemstra <ahiemstra@heimr.nl>
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+import QtQuick 2.15
+
+Item {
+
+}
diff --git a/tests/ECMQmlModuleTest/check.cmake.in b/tests/ECMQmlModuleTest/check.cmake.in
new file mode 100644
index 00000000..af64a120
--- /dev/null
+++ b/tests/ECMQmlModuleTest/check.cmake.in
@@ -0,0 +1,64 @@
+#
+# SPDX-FileCopyrightText: 2021 Arjen Hiemstra <ahiemstra@heimr.nl>
+#
+# SPDX-License-Identifier: BSD-3-Clause
+
+set(SOURCE_DIR "@CMAKE_CURRENT_SOURCE_DIR@")
+set(INSTALL_DIR "@CMAKE_INSTALL_PREFIX@/test")
+set(SHARED "@BUILD_SHARED_LIBS@")
+set(QML_ONLY "@QML_ONLY@")
+set(DEPENDS "@DEPENDS@")
+
+function(check_file_exists file)
+    if (NOT EXISTS ${file})
+        message(FATAL_ERROR "File \"${file}\" does not exist")
+    endif()
+endfunction()
+
+function (check_file_contents)
+    cmake_parse_arguments(ARGS "" "GENERATED;EXPECTED" "" ${ARGN})
+
+    if (NOT EXISTS "${ARGS_GENERATED}")
+        message(FATAL_ERROR "${ARGS_GENERATED} was not generated")
+    endif()
+    file(READ "${ARGS_GENERATED}" generated_contents)
+    if (NOT EXISTS "${ARGS_EXPECTED}")
+        message(FATAL_ERROR "Original ${ARGS_EXPECTED} was not found")
+    endif()
+    file(READ "${ARGS_EXPECTED}" original_contents)
+    if (NOT "${generated_contents}" STREQUAL "${original_contents}")
+        message(FATAL_ERROR "${generated_file} contains '${generated_contents}' instead of '${original_contents}'")
+    endif()
+endfunction()
+
+if (SHARED)
+    check_file_contents(
+        GENERATED "${INSTALL_DIR}/Test/QmlModule.qml"
+        EXPECTED "${SOURCE_DIR}/QmlModule.qml"
+    )
+
+    if (NOT QML_ONLY AND NOT DEPENDS)
+        check_file_exists("${INSTALL_DIR}/Test/libTestModule.so")
+
+        check_file_contents(
+            GENERATED "${INSTALL_DIR}/Test/qmldir"
+            EXPECTED "${SOURCE_DIR}/qmldir_expected_full"
+        )
+    endif()
+
+    if (QML_ONLY AND NOT DEPENDS)
+        check_file_contents(
+            GENERATED "${INSTALL_DIR}/Test/qmldir"
+            EXPECTED "${SOURCE_DIR}/qmldir_expected_qmlonly"
+        )
+    endif()
+
+    if (DEPENDS)
+        check_file_contents(
+            GENERATED "${INSTALL_DIR}/Test/qmldir"
+            EXPECTED "${SOURCE_DIR}/qmldir_expected_depends"
+        )
+    endif()
+else()
+    check_file_exists("${INSTALL_DIR}/Test/libTestModule.a")
+endif()
diff --git a/tests/ECMQmlModuleTest/qmldir_expected_depends b/tests/ECMQmlModuleTest/qmldir_expected_depends
new file mode 100644
index 00000000..2f373e2f
--- /dev/null
+++ b/tests/ECMQmlModuleTest/qmldir_expected_depends
@@ -0,0 +1,6 @@
+# This file was automatically generated by ECMQmlModule and should not be modified
+module Test
+plugin TestModule
+classname TestModule
+depends OtherTest
+QmlModule 1.0 QmlModule.qml
diff --git a/tests/ECMQmlModuleTest/qmldir_expected_depends.license b/tests/ECMQmlModuleTest/qmldir_expected_depends.license
new file mode 100644
index 00000000..8ebd85e2
--- /dev/null
+++ b/tests/ECMQmlModuleTest/qmldir_expected_depends.license
@@ -0,0 +1,2 @@
+SPDX-FileCopyrightText: 2021 Arjen Hiemstra <ahiemstra@heimr.nl>
+SPDX-License-Identifier: CC0
diff --git a/tests/ECMQmlModuleTest/qmldir_expected_full b/tests/ECMQmlModuleTest/qmldir_expected_full
new file mode 100644
index 00000000..9a13246c
--- /dev/null
+++ b/tests/ECMQmlModuleTest/qmldir_expected_full
@@ -0,0 +1,5 @@
+# This file was automatically generated by ECMQmlModule and should not be modified
+module Test
+plugin TestModule
+classname TestModule
+QmlModule 1.0 QmlModule.qml
diff --git a/tests/ECMQmlModuleTest/qmldir_expected_full.license b/tests/ECMQmlModuleTest/qmldir_expected_full.license
new file mode 100644
index 00000000..8ebd85e2
--- /dev/null
+++ b/tests/ECMQmlModuleTest/qmldir_expected_full.license
@@ -0,0 +1,2 @@
+SPDX-FileCopyrightText: 2021 Arjen Hiemstra <ahiemstra@heimr.nl>
+SPDX-License-Identifier: CC0
diff --git a/tests/ECMQmlModuleTest/qmldir_expected_qmlonly b/tests/ECMQmlModuleTest/qmldir_expected_qmlonly
new file mode 100644
index 00000000..01823063
--- /dev/null
+++ b/tests/ECMQmlModuleTest/qmldir_expected_qmlonly
@@ -0,0 +1,3 @@
+# This file was automatically generated by ECMQmlModule and should not be modified
+module Test
+QmlModule 1.0 QmlModule.qml
diff --git a/tests/ECMQmlModuleTest/qmldir_expected_qmlonly.license b/tests/ECMQmlModuleTest/qmldir_expected_qmlonly.license
new file mode 100644
index 00000000..8ebd85e2
--- /dev/null
+++ b/tests/ECMQmlModuleTest/qmldir_expected_qmlonly.license
@@ -0,0 +1,2 @@
+SPDX-FileCopyrightText: 2021 Arjen Hiemstra <ahiemstra@heimr.nl>
+SPDX-License-Identifier: CC0
diff --git a/tests/ECMQmlModuleTest/qmlmodule.cpp b/tests/ECMQmlModuleTest/qmlmodule.cpp
new file mode 100644
index 00000000..a1552a86
--- /dev/null
+++ b/tests/ECMQmlModuleTest/qmlmodule.cpp
@@ -0,0 +1,14 @@
+/**
+ * SPDX-FileCopyrightText: 2021 Arjen Hiemstra <ahiemstra@heimr.nl>
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include "qmlmodule.h"
+
+#include <QtQml/QQmlEngine>
+
+void QmlModule::registerTypes(const char* uri)
+{
+    Q_ASSERT(QLatin1String(uri) == QLatin1String("Test"));
+}
diff --git a/tests/ECMQmlModuleTest/qmlmodule.h b/tests/ECMQmlModuleTest/qmlmodule.h
new file mode 100644
index 00000000..49cd83a9
--- /dev/null
+++ b/tests/ECMQmlModuleTest/qmlmodule.h
@@ -0,0 +1,21 @@
+/**
+ * SPDX-FileCopyrightText: 2021 Arjen Hiemstra <ahiemstra@heimr.nl>
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef QMLMODULE_H
+#define QMLMODULE_H
+
+#include <QtQml/QQmlExtensionPlugin>
+
+class QmlModule : public QQmlExtensionPlugin
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QQmlExtensionInterface")
+
+public:
+    void registerTypes(const char* uri) override;
+};
+
+#endif