Autogen: Revert adding ui files to byproducts of the timestamp target

When `ui_` include directives have different paths than `CMakeLists.txt`,
the dependency graph is not generated correctly.  This is the root cause
of #16776.  However, when #26135 was fixed by commit 5363bebc1e (Autogen:
Fix compilation of unchanged source files, 2024-07-16, v3.31.0-rc1~328^2),
it made #16776 worse: the build is always dirty.  Revert the fix for now.

Fixes: #26485
Issue: #26135
Issue: #25436

Source/cmQtAutoGenInitializer.cxx

@@ -1340,25 +1340,9 @@ bool cmQtAutoGenInitializer::InitAutogenTarget()
   }
 
   if (this->Uic.Enabled) {
-    auto const useAdvancedUicGraph = [this]() -> bool {
-      if (this->MultiConfig && this->GlobalGen->IsNinja()) {
-        return this->UseBetterGraph;
-      }
-      return true;
-    }();
-    if (useAdvancedUicGraph) {
-      // Make all ui_*.h files byproducts of the ${target}_autogen/timestamp
-      // custom command if the generation of depfile is enabled.
-      auto& byProducts = useDepfile ? timestampByproducts : autogenByproducts;
-      for (auto const& file : this->Uic.UiHeaders) {
-        this->AddGeneratedSource(file.first, this->Uic);
-        byProducts.push_back(file.second);
-      }
-    } else {
-      for (auto const& file : this->Uic.UiHeaders) {
-        this->AddGeneratedSource(file.first, this->Uic);
-        autogenByproducts.push_back(file.second);
-      }
+    for (auto const& file : this->Uic.UiHeaders) {
+      this->AddGeneratedSource(file.first, this->Uic);
+      autogenByproducts.push_back(file.second);
     }
   }
 

Tests/RunCMake/Autogen_6/RunCMakeTest.cmake

@@ -1,3 +1,4 @@
+
 include(RunCMake)
 include(Autogen_common/utils)
 
@@ -6,23 +7,22 @@ if (DEFINED with_qt_version)
     -Dwith_qt_version=${with_qt_version}
     "-DQt${with_qt_version}_DIR:PATH=${Qt${with_qt_version}_DIR}"
     "-DCMAKE_PREFIX_PATH:STRING=${CMAKE_PREFIX_PATH}"
-    "-DCMAKE_AUTOGEN_BETTER_GRAPH_MULTI_CONFIG=ON"
   )
   if (QtCore_VERSION VERSION_GREATER_EQUAL 5.15.0)
     macro(set_test_variables_for_unwanted_builds)
       if (RunCMake_GENERATOR MATCHES "Ninja")
-        set(RunCMake_TEST_NOT_EXPECT_stdout "widget2.cpp.o.d|mainwindow.cpp.o.d")
+        set(RunCMake_TEST_EXPECT_stdout "ninja: no work to do.")
       elseif (RunCMake_GENERATOR MATCHES "Make")
-        set(RunCMake_TEST_NOT_EXPECT_stdout "Building CXX object multi_ui_files/CMakeFiles/example.dir/src/widget2.cpp.o|\
-                                             Building CXX object multi_ui_files/CMakeFiles/example.dir/src/mainwindow.cpp.o")
+        set(RunCMake_TEST_NOT_EXPECT_stdout "Building CXX object multi_ui_files/CMakeFiles/example.dir/src/main.cpp.o|\
+                                             Building CXX object multi_ui_files/CMakeFiles/example.dir/src/widget.cpp.o")
       elseif (RunCMake_GENERATOR MATCHES "Visual Studio")
-        set(RunCMake_TEST_NOT_EXPECT_stdout "widget2.cpp|mainwindow.cpp")
+        set(RunCMake_TEST_NOT_EXPECT_stdout "widget.cpp")
       elseif (RunCMake_GENERATOR MATCHES "Xcode")
-        set(RunCMake_TEST_NOT_EXPECT_stdout "widget2.cpp|mainwindow.cpp")
+        set(RunCMake_TEST_NOT_EXPECT_stdout "widget.cpp")
       endif()
     endmacro()
 
-    function(uic_build_test test_name binary_dir source_dir file_to_touch test_config)
+    function(uic_incremental_build_test test_name binary_dir source_dir test_config)
       set(RunCMake_TEST_BINARY_DIR ${binary_dir})
       set(RunCMake_TEST_SOURCE_DIR ${source_dir})
 
@@ -39,13 +39,14 @@ if (DEFINED with_qt_version)
       endif()
       run_cmake_with_options(${test_name} ${RunCMake_TEST_OPTIONS} ${config_arg})
       set(RunCMake_TEST_NO_CLEAN 1)
+      set(RunCMake_TEST_VARIANT_DESCRIPTION "${RunCMake_TEST_VARIANT_DESCRIPTION}-First build")
+      run_cmake_command("${test_name}-build" ${CMAKE_COMMAND} --build . ${test_verbose_arg} ${multiconfig_config_arg})
+      set(RunCMake_TEST_VARIANT_DESCRIPTION "${config_desc}-Second build")
       run_cmake_command("${test_name}-build" ${CMAKE_COMMAND} --build . ${test_verbose_arg} ${multiconfig_config_arg})
 
-      file(TOUCH ${file_to_touch})
-      set(RunCMake_TEST_VARIANT_DESCRIPTION "${config_desc}-first_build_after_touching")
+      set(RunCMake_TEST_VARIANT_DESCRIPTION "${config_desc}-No files were built on the third build")
       set_test_variables_for_unwanted_builds()
       run_cmake_command("${test_name}-build" ${CMAKE_COMMAND} --build . ${test_verbose_arg} ${multiconfig_config_arg})
-      message(STATUS "${test_name}-build${config_desc}-Only build files that were touched were built - PASSED")
     endfunction()
 
     if(RunCMake_GENERATOR MATCHES "Make|Ninja|Visual Studio|Xcode")
@@ -60,11 +61,9 @@ if (DEFINED with_qt_version)
           set(config_desc "-${config}")
         endif()
 
-        uic_build_test(multi_ui_files_touch_ui ${RunCMake_BINARY_DIR}/multi_ui_files_touch_ui${config_desc}-build
-          ${RunCMake_SOURCE_DIR}/multi_ui_files ${RunCMake_SOURCE_DIR}/multi_ui_files/src/widget1.ui ${config})
+        uic_incremental_build_test(incremental_build_test ${RunCMake_BINARY_DIR}/incremental_build${config_desc}-build
+          ${RunCMake_SOURCE_DIR}/incremental_build ${config})
 
-        uic_build_test(multi_ui_files_touch_cpp ${RunCMake_BINARY_DIR}/multi_ui_files_touch_cpp${config_desc}-build
-          ${RunCMake_SOURCE_DIR}/multi_ui_files ${RunCMake_SOURCE_DIR}/multi_ui_files/src/widget1.cpp ${config})
       endforeach()
     endif()
   endif()

Tests/RunCMake/Autogen_6/multi_ui_files/CMakeLists.txt → Tests/RunCMake/Autogen_6/incremental_build/CMakeLists.txt

@@ -8,16 +8,10 @@ set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTOUIC ON)
 
 add_executable(example
-    src/mainwindow.ui
-    src/widget1.ui
-    src/widget2.ui
-    src/mainwindow.h
-    src/widget1.h
-    src/widget2.h
-    src/main.cpp
-    src/mainwindow.cpp
-    src/widget1.cpp
-    src/widget2.cpp
+    main.cpp
+    ui/widget.cpp
+    ui/widget.h
+    ui/widget.ui
 )
 
 target_link_libraries(example PRIVATE Qt${with_qt_version}::Widgets

Tests/RunCMake/Autogen_6/multi_ui_files/src/main.cpp → Tests/RunCMake/Autogen_6/incremental_build/main.cpp

@@ -1,11 +1,11 @@
 #include <QApplication>
 
-#include "mainwindow.h"
+#include "ui/widget.h"
 
 int main(int argc, char* argv[])
 {
   QApplication a(argc, argv);
-  MainWindow w;
+  Widget w;
   w.show();
   return a.exec();
 }

Tests/RunCMake/Autogen_6/incremental_build/ui/widget.cpp

@@ -0,0 +1,15 @@
+#include "widget.h"
+
+#include "./ui_widget.h"
+
+Widget::Widget(QWidget* parent)
+  : QWidget(parent)
+  , ui(new Ui::Widget)
+{
+  ui->setupUi(this);
+}
+
+Widget::~Widget()
+{
+  delete ui;
+}

Tests/RunCMake/Autogen_6/incremental_build/ui/widget.h

@@ -0,0 +1,23 @@
+#ifndef WIDGET_H
+#define WIDGET_H
+
+#include <QWidget>
+
+QT_BEGIN_NAMESPACE
+namespace Ui {
+class Widget;
+}
+QT_END_NAMESPACE
+
+class Widget : public QWidget
+{
+  Q_OBJECT
+
+public:
+  Widget(QWidget* parent = nullptr);
+  ~Widget();
+
+private:
+  Ui::Widget* ui;
+};
+#endif // WIDGET_H

Tests/RunCMake/Autogen_6/incremental_build/ui/widget.ui

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>Widget</class>
+ <widget class="QWidget" name="Widget">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>800</width>
+    <height>600</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Widget</string>
+  </property>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

Tests/RunCMake/Autogen_6/multi_ui_files/src/mainwindow.cpp

@@ -1,25 +0,0 @@
-#include "mainwindow.h"
-
-#include <QVBoxLayout>
-
-#include "src/ui_mainwindow.h"
-#include "widget1.h"
-
-MainWindow::MainWindow(QWidget* parent)
-  : QMainWindow(parent)
-  , ui(new Ui::MainWindow)
-{
-  ui->setupUi(this);
-  auto layout = new QVBoxLayout;
-  layout->addWidget(new Widget1);
-
-  QWidget* w = new QWidget(this);
-  w->setLayout(layout);
-
-  setCentralWidget(w);
-}
-
-MainWindow::~MainWindow()
-{
-  delete ui;
-}

Tests/RunCMake/Autogen_6/multi_ui_files/src/mainwindow.h

@@ -1,22 +0,0 @@
-#ifndef MAINWINDOW_H
-#define MAINWINDOW_H
-
-#include <QMainWindow>
-
-QT_BEGIN_NAMESPACE
-namespace Ui {
-class MainWindow;
-}
-QT_END_NAMESPACE
-
-class MainWindow : public QMainWindow
-{
-  Q_OBJECT
-public:
-  MainWindow(QWidget* parent = nullptr);
-  ~MainWindow();
-
-private:
-  Ui::MainWindow* ui;
-};
-#endif // MAINWINDOW_H

Tests/RunCMake/Autogen_6/multi_ui_files/src/mainwindow.ui

@@ -1,33 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<ui version="4.0">
- <class>MainWindow</class>
- <widget class="QMainWindow" name="MainWindow">
-  <property name="geometry">
-   <rect>
-    <x>0</x>
-    <y>0</y>
-    <width>800</width>
-    <height>600</height>
-   </rect>
-  </property>
-  <property name="windowTitle">
-   <string>MainWindow</string>
-  </property>
-  <widget class="QWidget" name="centralwidget">
-   <layout class="QGridLayout" name="gridLayout"/>
-  </widget>
-  <widget class="QMenuBar" name="menubar">
-   <property name="geometry">
-    <rect>
-     <x>0</x>
-     <y>0</y>
-     <width>800</width>
-     <height>22</height>
-    </rect>
-   </property>
-  </widget>
-  <widget class="QStatusBar" name="statusbar"/>
- </widget>
- <resources/>
- <connections/>
-</ui>

Tests/RunCMake/Autogen_6/multi_ui_files/src/widget1.cpp

@@ -1,22 +0,0 @@
-#include "widget1.h"
-
-#include "src/ui_widget1.h"
-
-Widget1::Widget1(QWidget* parent)
-  : QWidget(parent)
-  , ui(new Ui::Widget1)
-{
-  ui->setupUi(this);
-  connect(ui->lineEdit, SIGNAL(textChanged(const QString&)), this,
-          SLOT(onTextChanged(const QString&)));
-}
-
-Widget1::~Widget1()
-{
-  delete ui;
-}
-
-void Widget1::onTextChanged(const QString& text)
-{
-  ui->OnTextChanged->setText(text);
-}

Tests/RunCMake/Autogen_6/multi_ui_files/src/widget1.h

@@ -1,23 +0,0 @@
-#ifndef WIDGET1_H
-#define WIDGET1_H
-
-#include <QWidget>
-
-namespace Ui {
-class Widget1;
-}
-
-class Widget1 : public QWidget
-{
-  Q_OBJECT
-public:
-  explicit Widget1(QWidget* parent = nullptr);
-  ~Widget1();
-public slots:
-  void onTextChanged(const QString& text);
-
-private:
-  Ui::Widget1* ui;
-};
-
-#endif // WIDGET1_H

Tests/RunCMake/Autogen_6/multi_ui_files/src/widget1.ui

@@ -1,52 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<ui version="4.0">
- <class>Widget1</class>
- <widget class="QWidget" name="Widget1">
-  <property name="geometry">
-   <rect>
-    <x>0</x>
-    <y>0</y>
-    <width>400</width>
-    <height>300</height>
-   </rect>
-  </property>
-  <property name="windowTitle">
-   <string>Form</string>
-  </property>
-  <layout class="QFormLayout" name="formLayout">
-   <item row="0" column="0">
-    <widget class="QLabel" name="label_3">
-     <property name="text">
-      <string>Input:</string>
-     </property>
-    </widget>
-   </item>
-   <item row="0" column="1">
-    <widget class="QLineEdit" name="lineEdit"/>
-   </item>
-   <item row="1" column="0">
-    <widget class="QLabel" name="label">
-     <property name="text">
-      <string>OnTextChanged:</string>
-     </property>
-    </widget>
-   </item>
-   <item row="1" column="1">
-    <widget class="QLabel" name="OnTextChanged">
-     <property name="text">
-      <string/>
-     </property>
-    </widget>
-   </item>
-   <item row="2" column="0">
-    <widget class="QLabel" name="label_2">
-     <property name="text">
-      <string>TextLabel</string>
-     </property>
-    </widget>
-   </item>
-  </layout>
- </widget>
- <resources/>
- <connections/>
-</ui>

Tests/RunCMake/Autogen_6/multi_ui_files/src/widget2.cpp

@@ -1,22 +0,0 @@
-#include "widget2.h"
-
-#include "src/ui_widget2.h"
-
-Widget2::Widget2(QWidget* parent)
-  : QWidget(parent)
-  , ui(new Ui::Widget2)
-{
-  ui->setupUi(this);
-  connect(ui->lineEdit, SIGNAL(textChanged(const QString&)), this,
-          SLOT(onTextChanged(const QString&)));
-}
-
-Widget2::~Widget2()
-{
-  delete ui;
-}
-
-void Widget2::onTextChanged(const QString& text)
-{
-  ui->OnTextChanged->setText(text);
-}

Tests/RunCMake/Autogen_6/multi_ui_files/src/widget2.h

@@ -1,24 +0,0 @@
-#ifndef WIDGET2_H
-#define WIDGET2_H
-
-#include <QWidget>
-
-namespace Ui {
-class Widget2;
-}
-
-class Widget2 : public QWidget
-{
-  Q_OBJECT
-
-public:
-  explicit Widget2(QWidget* parent = nullptr);
-  ~Widget2();
-public slots:
-  void onTextChanged(const QString& text);
-
-private:
-  Ui::Widget2* ui;
-};
-
-#endif // WIDGET2_H

Tests/RunCMake/Autogen_6/multi_ui_files/src/widget2.ui

@@ -1,45 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<ui version="4.0">
- <class>Widget2</class>
- <widget class="QWidget" name="Widget2">
-  <property name="geometry">
-   <rect>
-    <x>0</x>
-    <y>0</y>
-    <width>400</width>
-    <height>300</height>
-   </rect>
-  </property>
-  <property name="windowTitle">
-   <string>Form</string>
-  </property>
-  <layout class="QFormLayout" name="formLayout">
-   <item row="0" column="0">
-    <widget class="QLabel" name="label_3">
-     <property name="text">
-      <string>Input:</string>
-     </property>
-    </widget>
-   </item>
-   <item row="0" column="1">
-    <widget class="QLineEdit" name="lineEdit"/>
-   </item>
-   <item row="1" column="0">
-    <widget class="QLabel" name="label">
-     <property name="text">
-      <string>OnTextChanged:</string>
-     </property>
-    </widget>
-   </item>
-   <item row="1" column="1">
-    <widget class="QLabel" name="OnTextChanged">
-     <property name="text">
-      <string/>
-     </property>
-    </widget>
-   </item>
-  </layout>
- </widget>
- <resources/>
- <connections/>
-</ui>