CMake: Use host variables instead of hardcoded directories

'QT_HOST_PATH' indicates that we use crosscompilation toolchain
to build project. In this case 'Qt6Config.cmake' loads
'Qt6HostInfoConfig.cmake' from host QT_HOST_PATH, that defines
correct paths to host tools.

Replace hardcoded paths for host tools by paths recorded
in Qt6HostInfoConfig.cmake.

Correct conditions for QT_HOST_PATH, evaluate it explicitly as
string, but not as boolean expression.

Fixes: QTBUG-86557
Change-Id: Ib52bbd32478051d019a932dcb1f735e2d4aacfbf
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
(cherry picked from commit 56bdef94379479f27858dccc73a95614648735bb)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

cmake/QtConfig.cmake.in

@@ -19,6 +19,16 @@ else()
                              QT_VERSION_PATCH @PROJECT_VERSION_PATCH@)
 endif()
 
+if(NOT "${QT_HOST_PATH}" STREQUAL "")
+    find_package(Qt@PROJECT_VERSION_MAJOR@HostInfo
+                 CONFIG
+                 REQUIRED
+                 PATHS "${QT_HOST_PATH}"
+                       "${QT_HOST_PATH_CMAKE_DIR}"
+                 NO_CMAKE_FIND_ROOT_PATH
+                 NO_DEFAULT_PATH)
+endif()
+
 # if (NOT @INSTALL_CMAKE_NAMESPACE@_FIND_COMPONENTS)
 #     set(@INSTALL_CMAKE_NAMESPACE@_NOT_FOUND_MESSAGE "The Qt package requires at least one component")
 #     set(@INSTALL_CMAKE_NAMESPACE@_FOUND False)

cmake/QtModuleDependencies.cmake.in

@@ -43,7 +43,7 @@ endforeach()
 # Find Qt tool package.
 set(_tool_deps "@main_module_tool_deps@")
 
-if(QT_HOST_PATH)
+if(NOT "${QT_HOST_PATH}" STREQUAL "")
      # Make sure that the tools find the host tools first
      set(BACKUP_@target@_CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH})
      set(BACKUP_@target@_CMAKE_FIND_ROOT_PATH ${CMAKE_FIND_ROOT_PATH})
@@ -64,14 +64,14 @@ foreach(_target_dep ${_tool_deps})
     endif()
     find_package(${pkg} ${version} ${find_package_args})
     if (NOT ${pkg}_FOUND)
-        if(QT_HOST_PATH)
+        if(NOT "${QT_HOST_PATH}" STREQUAL "")
              set(CMAKE_PREFIX_PATH ${BACKUP_@target@_CMAKE_PREFIX_PATH})
              set(CMAKE_FIND_ROOT_PATH ${BACKUP_@target@_CMAKE_FIND_ROOT_PATH})
         endif()
         return()
     endif()
 endforeach()
-if(QT_HOST_PATH)
+if(NOT "${QT_HOST_PATH}" STREQUAL "")
      set(CMAKE_PREFIX_PATH ${BACKUP_@target@_CMAKE_PREFIX_PATH})
      set(CMAKE_FIND_ROOT_PATH ${BACKUP_@target@_CMAKE_FIND_ROOT_PATH})
 endif()

cmake/QtPlatformAndroid.cmake

@@ -127,8 +127,8 @@ define_property(TARGET
 
 # Returns test execution arguments for Android targets
 function(qt_internal_android_test_arguments target out_test_runner out_test_arguments)
-    set(${out_test_runner} "${QT_HOST_PATH}/bin/androidtestrunner" PARENT_SCOPE)
+    set(${out_test_runner} "${QT_HOST_PATH}/${QT${PROJECT_VERSION_MAJOR}_HOST_INFO_BINDIR}/androidtestrunner" PARENT_SCOPE)
-    set(deployment_tool "${QT_HOST_PATH}/bin/androiddeployqt")
+    set(deployment_tool "${QT_HOST_PATH}/${QT${PROJECT_VERSION_MAJOR}_HOST_INFO_BINDIR}/androiddeployqt")
 
     get_target_property(deployment_file ${target} QT_ANDROID_DEPLOYMENT_SETTINGS_FILE)
     if (NOT deployment_file)

cmake/QtSetup.cmake

@@ -174,11 +174,12 @@ if (CMAKE_CROSSCOMPILING)
     endif()
 endif()
 
-if(QT_HOST_PATH)
+if(NOT "${QT_HOST_PATH}" STREQUAL "")
     find_package(Qt${PROJECT_VERSION_MAJOR}HostInfo
                  CONFIG
                  REQUIRED
-                 PATHS "${QT_HOST_PATH}" "${QT_HOST_PATH}/lib/cmake"
+                 PATHS "${QT_HOST_PATH}"
+                       "${QT_HOST_PATH_CMAKE_DIR}"
                  NO_CMAKE_FIND_ROOT_PATH
                  NO_DEFAULT_PATH)
 endif()

cmake/QtSyncQtHelpers.cmake

@@ -27,7 +27,7 @@ function(qt_ensure_sync_qt)
         qt_path_join(syncqt_install_dir ${QT_INSTALL_DIR} ${INSTALL_BINDIR})
         qt_copy_or_install(PROGRAMS "${SYNCQT_FROM_SOURCE}"
                            DESTINATION "${syncqt_install_dir}")
-    elseif(QT_HOST_PATH)
+    elseif(NOT "${QT_HOST_PATH}" STREQUAL "")
         get_filename_component(syncqt_absolute_path
                                "${QT_HOST_PATH}/${QT${PROJECT_VERSION_MAJOR}_HOST_INFO_LIBEXECDIR}/syncqt.pl"
                                ABSOLUTE)

cmake/QtTargetHelpers.cmake

@@ -501,7 +501,7 @@ function(qt_internal_create_tracepoints name tracepoints_file)
             set(tracegen_arg "etw")
         endif()
 
-        if(QT_HOST_PATH)
+        if(NOT "${QT_HOST_PATH}" STREQUAL "")
             qt_path_join(tracegen
                 "${QT_HOST_PATH}"
                 "${QT${PROJECT_VERSION_MAJOR}_HOST_INFO_BINDIR}"

cmake/QtToolchainHelpers.cmake

@@ -2,7 +2,7 @@
 # as well as CMake application projects.
 # Expects various global variables to be set.
 function(qt_internal_create_toolchain_file)
-    if(QT_HOST_PATH)
+    if(NOT "${QT_HOST_PATH}" STREQUAL "")
         # TODO: Figure out how to make these relocatable.
 
         get_filename_component(__qt_host_path_absolute "${QT_HOST_PATH}" ABSOLUTE)
@@ -22,10 +22,10 @@ function(qt_internal_create_toolchain_file)
     endif()")
 
         set(init_qt_host_path_checks "
-    if(NOT QT_HOST_PATH OR NOT EXISTS \"\${QT_HOST_PATH}\")
+    if(\"\${QT_HOST_PATH}\" STREQUAL \"\" OR NOT EXISTS \"\${QT_HOST_PATH}\")
         message(FATAL_ERROR \"To use a cross-compiled Qt, please specify a path to a host Qt installation by setting the QT_HOST_PATH cache variable.\")
     endif()
-    if(NOT QT_HOST_PATH_CMAKE_DIR OR NOT EXISTS \"\${QT_HOST_PATH_CMAKE_DIR}\")
+    if(\"\${QT_HOST_PATH_CMAKE_DIR}\" STREQUAL \"\" OR NOT EXISTS \"\${QT_HOST_PATH_CMAKE_DIR}\")
         message(FATAL_ERROR \"To use a cross-compiled Qt, please specify a path to a host Qt installation CMake directory by setting the QT_HOST_PATH_CMAKE_DIR cache variable.\")
     endif()")
     endif()

src/corelib/Qt6AndroidMacros.cmake

@@ -180,7 +180,7 @@ function(qt6_android_generate_deployment_settings target)
     endif()
 
     # Override qmlimportscanner binary path
-    set(qml_importscanner_binary_path "${QT_HOST_PATH}/bin/qmlimportscanner")
+    set(qml_importscanner_binary_path "${QT_HOST_PATH}/${QT6_HOST_INFO_BINDIR}/qmlimportscanner")
     if (WIN32)
         string(APPEND qml_importscanner_binary_path ".exe")
     endif()
@@ -189,7 +189,7 @@ function(qt6_android_generate_deployment_settings target)
         "   \"qml-importscanner-binary\" : \"${qml_importscanner_binary_path_native}\",\n")
 
     # Override rcc binary path
-    set(rcc_binary_path "${QT_HOST_PATH}/bin/rcc")
+    set(rcc_binary_path "${QT_HOST_PATH}/${QT6_HOST_INFO_BINDIR}/rcc")
     if (WIN32)
         string(APPEND rcc_binary_path ".exe")
     endif()
@@ -269,7 +269,7 @@ function(qt6_android_add_apk_target target)
         set(should_add_to_global_apk TRUE)
     endif()
 
-    set(deployment_tool "${QT_HOST_PATH}/bin/androiddeployqt")
+    set(deployment_tool "${QT_HOST_PATH}/${QT6_HOST_INFO_BINDIR}/androiddeployqt")
     set(apk_dir "$<TARGET_PROPERTY:${target},BINARY_DIR>/android-build")
     add_custom_target(${target}_prepare_apk_dir
         DEPENDS ${target}

src/gui/CMakeLists.txt

@@ -885,7 +885,7 @@ if (QT_FEATURE_vulkan)
     set(vulkan_fun_p_cpp "qvulkanfunctions_p.cpp")
     list(APPEND vulkan_fun_outputs "vulkan/${vulkan_fun_p_cpp}")
 
-    if(QT_HOST_PATH)
+    if(NOT "${QT_HOST_PATH}" STREQUAL "")
         qt_path_join(qvkgen
             "${QT_HOST_PATH}"
             "${QT${PROJECT_VERSION_MAJOR}_HOST_INFO_BINDIR}"