Build: Remove FindQt5.cmake

No longer needed, since we generally only support building with
Qt 6 nowadays, and the parts that still do support building with
Qt 5 handle that manually.

Change-Id: I72381589ca3ab7bf1af88d9f185cad7f0cdf149c
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Cristian Adam <cristian.adam@qt.io>

CMakeLists.txt

@@ -65,7 +65,7 @@ if(MSVC)
   add_compile_options(/wd4573)
 endif()
 
-find_package(Qt5
+find_package(Qt6
   ${IDE_QT_VERSION_MIN}
   COMPONENTS Concurrent Core Gui Network PrintSupport Qml Sql Widgets Xml Core5Compat ${QT_TEST_COMPONENT}
   REQUIRED
@@ -82,8 +82,8 @@ if (MSVC AND QT_FEATURE_static_runtime)
   set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
 endif()
 
-find_package(Qt5 COMPONENTS LinguistTools QUIET)
+find_package(Qt6 OPTIONAL_COMPONENTS Quick QuickWidgets Designer DesignerComponentsPrivate
-find_package(Qt5 COMPONENTS Quick QuickWidgets Designer DesignerComponents Help SerialPort Svg Tools QUIET)
+                                     Help SerialPort Svg Tools LinguistTools QUIET)
 
 find_package(Threads)
 find_package(Clang QUIET)

cmake/FindQt5.cmake

@@ -1,103 +0,0 @@
-#.rst:
-# FindQt5
-# -------
-#
-# Qt5 wrapper around Qt6 CMake code.
-#
-
-unset(__arguments)
-if (Qt5_FIND_QUIETLY)
-  list(APPEND __arguments QUIET)
-endif()
-if (Qt5_FIND_REQUIRED)
-  list(APPEND __arguments REQUIRED)
-endif()
-
-if (Qt5_FIND_COMPONENTS)
-  # for some reason QUIET doesn't really work when passed to the arguments list
-  if (Qt5_FIND_QUIETLY)
-    list(APPEND __arguments OPTIONAL_COMPONENTS)
-  else()
-    list(APPEND __arguments COMPONENTS)
-  endif()
-endif()
-
-find_package(Qt6 ${Qt5_FIND_VERSION} CONFIG COMPONENTS Core QUIET)
-if (NOT Qt6_FOUND)
-  # remove Core5Compat from components to find in Qt5, but add a dummy target,
-  # which unfortunately cannot start with "Qt6::"
-  # also remove Tools, where some tools have moved in Qt6, e.g. from Help
-  list(REMOVE_ITEM Qt5_FIND_COMPONENTS Core5Compat)
-  list(REMOVE_ITEM Qt5_FIND_COMPONENTS Tools)
-  find_package(Qt5 ${Qt5_FIND_VERSION} CONFIG ${__arguments} ${Qt5_FIND_COMPONENTS})
-  if (NOT TARGET Qt6Core5Compat)
-    add_library(Qt6Core5Compat INTERFACE)
-  endif()
-
-  # Remove Qt6 from the not found packages in Qt5 mode
-  get_property(not_found_packages GLOBAL PROPERTY "PACKAGES_NOT_FOUND")
-  if(not_found_packages)
-    list(REMOVE_ITEM not_found_packages Qt6)
-    set_property(GLOBAL PROPERTY "PACKAGES_NOT_FOUND" "${not_found_packages}")
-  endif()
-  return()
-else()
-  # since Qt 6.2 some components are renamed to *Private
-  foreach(possible_private_libs DesignerComponents QmlDebug)
-      list(FIND Qt5_FIND_COMPONENTS ${possible_private_libs} dcIndex)
-      if(dcIndex GREATER_EQUAL 0)
-        find_package(Qt6${possible_private_libs}Private CONFIG QUIET)
-        if(TARGET Qt6::${possible_private_libs}Private)
-          set_property(TARGET Qt6::${possible_private_libs}Private PROPERTY IMPORTED_GLOBAL TRUE)
-          add_library(Qt5::${possible_private_libs} ALIAS Qt6::${possible_private_libs}Private)
-          list(REMOVE_AT Qt5_FIND_COMPONENTS ${dcIndex})
-        endif()
-      endif()
-  endforeach()
-  find_package(Qt6 CONFIG ${__arguments} ${Qt5_FIND_COMPONENTS})
-endif()
-
-set(__additional_imported_components ATSPI2_nolink) # Work around QTBUG-97023
-foreach(comp IN LISTS Qt5_FIND_COMPONENTS __additional_imported_components)
-  if(TARGET Qt6::${comp})
-    if (NOT TARGET Qt5::${comp})
-      if (NOT QT_FEATURE_static)
-        set_property(TARGET Qt6::${comp} PROPERTY IMPORTED_GLOBAL TRUE)
-      endif()
-      add_library(Qt5::${comp} ALIAS Qt6::${comp})
-    endif()
-    if (TARGET Qt6::${comp}Private AND NOT TARGET Qt5::${comp}Private)
-      if (NOT QT_FEATURE_static)
-        set_property(TARGET Qt6::${comp}Private PROPERTY IMPORTED_GLOBAL TRUE)
-      endif()
-      add_library(Qt5::${comp}Private ALIAS Qt6::${comp}Private)
-    endif()
-  endif()
-endforeach()
-
-# alias Qt6::Core5Compat to Qt6Core5Compat to make consistent with Qt5 path
-if (TARGET Qt6::Core5Compat AND NOT TARGET Qt6Core5Compat)
-  add_library(Qt6Core5Compat ALIAS Qt6::Core5Compat)
-endif()
-
-set(Qt5_FOUND ${Qt6_FOUND})
-set(Qt5_VERSION ${Qt6_VERSION})
-
-foreach(tool qmake lrelease lupdate moc rcc qhelpgenerator)
-  if (TARGET Qt6::${tool} AND NOT TARGET Qt5::${tool})
-    add_executable(Qt5::${tool} IMPORTED GLOBAL)
-    get_target_property(imported_location Qt6::${tool} IMPORTED_LOCATION)
-    # handle separate tools for each configuration
-    if (NOT imported_location)
-      get_target_property(imported_location Qt6::${tool} IMPORTED_LOCATION_RELEASE)
-    endif()
-    set_target_properties(Qt5::${tool} PROPERTIES IMPORTED_LOCATION "${imported_location}")
-  endif()
-endforeach()
-
-if (NOT DEFINED qt5_wrap_cpp)
-  function(qt5_wrap_cpp outfiles)
-    qt6_wrap_cpp(${outfiles} ${ARGN})
-    set(${outfiles} ${${outfiles}} PARENT_SCOPE)
-  endfunction()
-endif()

cmake/QtCreatorAPIInternal.cmake

@@ -224,7 +224,7 @@ function(set_explicit_moc target_name file)
     set(file_dependencies DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/${target_name}.json")
   endif()
   set_property(SOURCE "${file}" PROPERTY SKIP_AUTOMOC ON)
-  qt5_wrap_cpp(file_moc "${file}" ${file_dependencies})
+  qt_wrap_cpp(file_moc "${file}" ${file_dependencies})
   target_sources(${target_name} PRIVATE "${file_moc}")
 endfunction()
 

cmake/QtCreatorDocumentation.cmake

@@ -10,7 +10,7 @@ add_feature_info("Build online documentation" WITH_ONLINE_DOCS "")
 # Used for QT_INSTALL_DOCS
 function(qt5_query_qmake)
   if (NOT TARGET Qt::qmake)
-    message(FATAL_ERROR "Qmake was not found. Add find_package(Qt5 COMPONENTS Core) to CMake to enable.")
+    message(FATAL_ERROR "Qmake was not found. Add find_package(Qt6 COMPONENTS Core) to CMake to enable.")
   endif()
   # dummy check for if we already queried qmake
   if (QT_INSTALL_BINS)
@@ -154,7 +154,7 @@ function(_setup_qhelpgenerator_targets _qdocconf_file _html_outputdir)
   endif()
 
   if (NOT TARGET Qt::qhelpgenerator)
-    message(WARNING "qhelpgenerator missing: No QCH documentation targets were generated. Add find_package(Qt5 COMPONENTS Help) to CMake to enable.")
+    message(WARNING "qhelpgenerator missing: No QCH documentation targets were generated. Add find_package(Qt6 COMPONENTS Help) to CMake to enable.")
     return()
   endif()
 

cmake/QtCreatorTranslations.cmake

@@ -126,7 +126,7 @@ endfunction()
 function(add_translation_targets file_prefix)
   if (NOT TARGET Qt::lrelease OR NOT TARGET Qt::lupdate)
     # No Qt translation tools were found: Skip this directory
-    message(WARNING "No Qt translation tools found, skipping translation targets. Add find_package(Qt5 COMPONENTS LinguistTools) to CMake to enable.")
+    message(WARNING "No Qt translation tools found, skipping translation targets. Add find_package(Qt6 COMPONENTS LinguistTools) to CMake to enable.")
     return()
   endif()
 

src/CMakeLists.txt

@@ -36,9 +36,6 @@ install(EXPORT QtCreator
 )
 
 file(WRITE ${CMAKE_BINARY_DIR}/cmake/QtCreatorConfig.cmake "
-\# add module path for special FindQt5.cmake that considers Qt6 too
-list(APPEND CMAKE_MODULE_PATH \${CMAKE_CURRENT_LIST_DIR})
-
 \# force plugins to same path naming conventions as Qt Creator
 \# otherwise plugins will not be found
 if(UNIX AND NOT APPLE)
@@ -50,10 +47,10 @@ if(UNIX AND NOT APPLE)
 endif()
 
 include(CMakeFindDependencyMacro)
-find_dependency(Qt5 ${IDE_QT_VERSION_MIN}
+find_dependency(Qt6 ${IDE_QT_VERSION_MIN}
   COMPONENTS Concurrent Core Gui Widgets Core5Compat Network PrintSupport Qml Sql REQUIRED
 )
-find_dependency(Qt5 COMPONENTS Quick QuickWidgets QUIET)
+find_dependency(Qt6 COMPONENTS Quick QuickWidgets QUIET)
 
 if (NOT IDE_VERSION)
   include(\${CMAKE_CURRENT_LIST_DIR}/QtCreatorIDEBranding.cmake)
@@ -87,7 +84,6 @@ file(COPY
   ${PROJECT_SOURCE_DIR}/cmake/QtCreatorDocumentation.cmake
   ${PROJECT_SOURCE_DIR}/cmake/QtCreatorAPI.cmake
   ${PROJECT_SOURCE_DIR}/cmake/QtCreatorAPIInternal.cmake
-  ${PROJECT_SOURCE_DIR}/cmake/FindQt5.cmake
   ${PROJECT_SOURCE_DIR}/cmake/Config.cmake.in
   ${PROJECT_SOURCE_DIR}/cmake/QtcSeparateDebugInfo.cmake
   ${PROJECT_SOURCE_DIR}/cmake/QtcSeparateDebugInfo.Info.plist.in
@@ -102,7 +98,6 @@ install(
     ${PROJECT_SOURCE_DIR}/cmake/QtCreatorDocumentation.cmake
     ${PROJECT_SOURCE_DIR}/cmake/QtCreatorAPI.cmake
     ${PROJECT_SOURCE_DIR}/cmake/QtCreatorAPIInternal.cmake
-    ${PROJECT_SOURCE_DIR}/cmake/FindQt5.cmake
     ${PROJECT_SOURCE_DIR}/cmake/Config.cmake.in
     ${PROJECT_SOURCE_DIR}/cmake/QtcSeparateDebugInfo.cmake
     ${PROJECT_SOURCE_DIR}/cmake/QtcSeparateDebugInfo.Info.plist.in

src/libs/extensionsystem/CMakeLists.txt

@@ -19,7 +19,7 @@ add_qtc_library(ExtensionSystem
   SKIP_AUTOMOC pluginmanager.cpp
 )
 
-find_package(Qt5 COMPONENTS Test QUIET)
+find_package(Qt6 COMPONENTS Test QUIET)
 
 extend_qtc_library(ExtensionSystem
   CONDITION TARGET Qt::Test

src/libs/utils/CMakeLists.txt

@@ -2,7 +2,7 @@ add_qtc_library(Utils
   DEPENDS Qt::Qml Qt::Xml
   PUBLIC_DEPENDS
     Qt::Concurrent Qt::Core Qt::Network Qt::Gui Qt::Widgets
-    Qt6Core5Compat
+    Qt::Core5Compat
   SOURCES
     ../3rdparty/span/span.hpp
     ../3rdparty/tl_expected/include/tl/expected.hpp

src/plugins/clangtools/unit-tests/exported-diagnostics/CMakeLists.txt

@@ -11,7 +11,7 @@ set(CMAKE_AUTORCC ON)
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
-find_package(Qt5 COMPONENTS Widgets REQUIRED)
+find_package(Qt6 COMPONENTS Widgets REQUIRED)
 
 add_executable(clangtools
   main.cpp

src/plugins/haskell/CMakeLists.txt

@@ -1,7 +1,6 @@
 add_qtc_plugin(Haskell
   PLUGIN_DEPENDS
     QtCreator::Core QtCreator::TextEditor QtCreator::ProjectExplorer
-  DEPENDS Qt5::Widgets
   SOURCES
     haskell.qrc
     haskell_global.h

src/plugins/help/CMakeLists.txt

@@ -45,7 +45,7 @@ extend_qtc_plugin(Help
 )
 
 option(BUILD_HELPVIEWERBACKEND_QTWEBENGINE "Build QtWebEngine based help viewer backend." YES)
-find_package(Qt5 COMPONENTS WebEngineWidgets QUIET)
+find_package(Qt6 COMPONENTS WebEngineWidgets QUIET)
 extend_qtc_plugin(Help
   CONDITION BUILD_HELPVIEWERBACKEND_QTWEBENGINE AND TARGET Qt::WebEngineWidgets
   FEATURE_INFO "QtWebEngine help viewer"

src/plugins/imageviewer/CMakeLists.txt

@@ -1,4 +1,4 @@
-find_package(Qt5 COMPONENTS SvgWidgets QUIET)
+find_package(Qt6 COMPONENTS SvgWidgets QUIET)
 if (TARGET Qt::SvgWidgets)
   set(SVG_WIDGETS Qt::SvgWidgets)
 endif()

tests/auto/debugger/CMakeLists.txt

@@ -27,7 +27,7 @@ if (NOT QT_CREATOR_API_DEFINED)
 
   set(WITH_TESTS ON)
 
-  find_package(Qt5
+  find_package(Qt6
     COMPONENTS
       Gui Core Core5Compat Widgets Network Qml Concurrent Test Xml MODULE)
   find_package(Threads)

tests/unit/CMakeLists.txt

@@ -30,7 +30,7 @@ if (NOT QT_CREATOR_API_DEFINED)
   set(GOOGLETEST_DIR ${CMAKE_CURRENT_LIST_DIR}/unittest/3rdparty/googletest)
 
   find_package(Clang MODULE)
-  find_package(Qt5
+  find_package(Qt6
     COMPONENTS
       Gui Core Core5Compat Widgets Network Qml Concurrent Test Xml MODULE)
   find_package(Threads)

tests/unit/unittest/CMakeLists.txt

@@ -24,7 +24,7 @@ add_qtc_test(unittest GTEST
   DEPENDS
     Qt::Core Qt::Network Qt::Widgets
     Qt::Xml Qt::Concurrent Qt::Qml Qt::Gui
-    Qt6Core5Compat QmlJS Sqlite SqliteC
+    Qt::Core5Compat QmlJS Sqlite SqliteC
     Googletest
   DEFINES
     QT_NO_CAST_TO_ASCII