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CMake: Fix cross-build without qt.toolchain.cmake

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If there's no qt.toolchain.cmake used, QT_HOST_PATH_CMAKE_DIR is not
set.  Use the location calculated from the Qt6HostInfo package in that
case.

This amends commit e044c94a61.

Pick-to: 6.2 6.3
Change-Id: I99aed8e920b8c1aa6efd8f18301cc34aca5559ca
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
This commit is contained in:
Joerg Bornemann 2022-02-17 14:12:19 +01:00
parent f1d521f076
commit 006224eb17
1 changed files with 4 additions and 3 deletions
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7
cmake/QtToolHelpers.cmake
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@ -112,23 +112,24 @@ function(qt_internal_add_tool target_name)
set(${tools_package_name}_BACKUP_CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH})
set(${tools_package_name}_BACKUP_CMAKE_FIND_ROOT_PATH "${CMAKE_FIND_ROOT_PATH}")
if(QT_HOST_PATH_CMAKE_DIR)
set(CMAKE_PREFIX_PATH "${QT_HOST_PATH_CMAKE_DIR}")
set(qt_host_path_cmake_dir_absolute "${QT_HOST_PATH_CMAKE_DIR}")
elseif(Qt${PROJECT_VERSION_MAJOR}HostInfo_DIR)
get_filename_component(qt_host_path_cmake_dir_absolute
"${Qt${PROJECT_VERSION_MAJOR}HostInfo_DIR}/.." ABSOLUTE)
set(CMAKE_PREFIX_PATH "${qt_host_path_cmake_dir_absolute}")
else()
# This should never happen, serves as an assert.
message(FATAL_ERROR
"Neither QT_HOST_PATH_CMAKE_DIR nor "
"Qt${PROJECT_VERSION_MAJOR}HostInfo_DIR} available.")
endif()
set(CMAKE_PREFIX_PATH "${qt_host_path_cmake_dir_absolute}")
# Look for tools in additional host Qt installations. This is done for conan support where
# we have separate installation prefixes per package. For simplicity, we assume here that
# all host Qt installations use the same value of INSTALL_LIBDIR.
if(DEFINED QT_ADDITIONAL_HOST_PACKAGES_PREFIX_PATH)
file(RELATIVE_PATH rel_host_cmake_dir "${QT_HOST_PATH}" "${QT_HOST_PATH_CMAKE_DIR}")
file(RELATIVE_PATH rel_host_cmake_dir "${QT_HOST_PATH}"
"${qt_host_path_cmake_dir_absolute}")
foreach(host_path IN LISTS QT_ADDITIONAL_HOST_PACKAGES_PREFIX_PATH)
set(host_cmake_dir "${host_path}/${rel_host_cmake_dir}")
list(PREPEND CMAKE_PREFIX_PATH "${host_cmake_dir}")