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CMake: Improve Qt6HostInfo package lookup condition

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Instead of checking if QT_HOST_PATH is set during user project
configuration to find out if Qt6HostInfo should be looked up,
record if QT_HOST_PATH was provided during Qt configuration
into Qt6Dependencies.cmake and look up the package in a user
project based on that information.

This improves handling of the case where cmake is directly used
to configure a Qt project (instead of qt-cmake), which means no
QT_HOST_PATH might be set by the user, and then cmake would error out
saying that e.g. Qt6CoreTools is not found, instead of saying that
Qt6HostInfo is not found.

Pick-to: 6.4
Task-number: QTBUG-104998
Change-Id: I0377d5440e4b5b295af73cfd4b5188f61d48e440
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
This commit is contained in:
Alexandru Croitor 2022-07-18 14:14:41 +02:00
parent a41bef8ede
commit 7b24ffa936
4 changed files with 16 additions and 4 deletions
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3
cmake/QtBuild.cmake
View File

@ -558,7 +558,8 @@ if(CMAKE_CROSSCOMPILING)
endif()
endif()
_qt_internal_find_host_info_package()
_qt_internal_determine_if_host_info_package_needed(__qt_build_requires_host_info_package)
_qt_internal_find_host_info_package("${__qt_build_requires_host_info_package}")
# TODO: This block provides support for old variables. It should be removed once
# we remove all references to these variables in other Qt module repos.

3
cmake/QtConfigDependencies.cmake.in
View File

@ -1,6 +1,7 @@
set(@INSTALL_CMAKE_NAMESPACE@_FOUND FALSE)
_qt_internal_find_host_info_package()
set(__qt_platform_requires_host_info_package "@platform_requires_host_info_package@")
_qt_internal_find_host_info_package(${__qt_platform_requires_host_info_package})
# note: _third_party_deps example: "ICU\\;FALSE\\;1.0\\;i18n uc data;ZLIB\\;FALSE\\;\\;"
set(__qt_third_party_deps "@third_party_deps@")

4
cmake/QtPostProcessHelpers.cmake
View File

@ -369,7 +369,9 @@ function(qt_internal_create_qt6_dependencies_file)
endif()")
endif()
if(third_party_deps)
_qt_internal_determine_if_host_info_package_needed(platform_requires_host_info_package)
if(third_party_deps OR platform_requires_host_info_package)
# Setup build and install paths.
set(path_suffix "${INSTALL_CMAKE_NAMESPACE}")

10
cmake/QtPublicDependencyHelpers.cmake
View File

@ -192,8 +192,16 @@ macro(_qt_internal_save_find_package_context_for_debugging infix)
endif()
endmacro()
macro(_qt_internal_find_host_info_package)
function(_qt_internal_determine_if_host_info_package_needed out_var)
set(needed FALSE)
if(NOT "${QT_HOST_PATH}" STREQUAL "")
set(needed TRUE)
endif()
set(${out_var} "${needed}" PARENT_SCOPE)
endfunction()
macro(_qt_internal_find_host_info_package platform_requires_host_info)
if(${platform_requires_host_info})
find_package(Qt6HostInfo
CONFIG
REQUIRED