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# SPDX-FileCopyrightText: 2014 Rohan Garg <rohan16garg@gmail.com>
# SPDX-FileCopyrightText: 2014 Alex Merry <alex.merry@kde.org>
# SPDX-FileCopyrightText: 2014-2016 Aleix Pol <aleixpol@kde.org>
# SPDX-FileCopyrightText: 2017 Friedrich W. H. Kossebau <kossebau@kde.org>
# SPDX-FileCopyrightText: 2022 Ahmad Samir <a.samir78@gmail.com>
#
# SPDX-License-Identifier: BSD-3-Clause
#[=======================================================================[.rst:
ECMQueryQt
---------------
This module can be used to query the installation paths used by Qt.
For Qt5 this uses ``qmake``, and for Qt6 this used ``qtpaths`` (the latter has built-in
support to query the paths of a target platform when cross-compiling).
This module defines the following function:
::
ecm_query_qt(<result_variable> <qt_variable> [TRY])
Passing ``TRY`` will result in the method not making the build fail if the executable
used for querying has not been found, but instead simply print a warning message and
return an empty string.
Example usage:
.. code-block:: cmake
include(ECMQueryQt)
ecm_query_qt(bin_dir QT_INSTALL_BINS)
If the call succeeds ``${bin_dir}`` will be set to ``<prefix>/path/to/bin/dir`` (e.g.
``/usr/lib64/qt/bin/``).
Since: 5.93
#]=======================================================================]
include(${CMAKE_CURRENT_LIST_DIR}/QtVersionOption.cmake)
if (QT_MAJOR_VERSION STREQUAL "5")
find_package(Qt${QT_MAJOR_VERSION}Core QUIET)
get_target_property(_qmake_executable_default Qt5::qmake LOCATION)
set(QUERY_EXECUTABLE ${_qmake_executable_default}
CACHE FILEPATH "Location of the Qt5 qmake executable")
set(_exec_name_text "Qt5 qmake")
set(_cli_option "-query")
elseif(QT_MAJOR_VERSION STREQUAL "6")
find_package(Qt6 COMPONENTS CoreTools REQUIRED CONFIG)
get_target_property(_qtpaths_executable Qt6::qtpaths LOCATION)
set(QUERY_EXECUTABLE ${_qtpaths_executable}
CACHE FILEPATH "Location of the Qt6 qtpaths executable")
set(_exec_name_text "Qt6 qtpaths")
set(_cli_option "--query")
endif()
function(ecm_query_qt result_variable qt_variable)
set(options TRY)
set(oneValueArgs)
set(multiValueArgs)
cmake_parse_arguments(ARGS "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
if(NOT QUERY_EXECUTABLE)
if(ARGS_TRY)
set(${result_variable} "" PARENT_SCOPE)
message(STATUS "No ${_exec_name_text} executable found. Can't check ${qt_variable}")
return()
else()
message(FATAL_ERROR "No ${_exec_name_text} executable found. Can't check ${qt_variable} as required")
endif()
endif()
execute_process(
COMMAND ${QUERY_EXECUTABLE} ${_cli_option} "${qt_variable}"
RESULT_VARIABLE return_code
OUTPUT_VARIABLE output
)
if(return_code EQUAL 0)
string(STRIP "${output}" output)
file(TO_CMAKE_PATH "${output}" output_path)
set(${result_variable} "${output_path}" PARENT_SCOPE)
else()
message(WARNING "Failed call: ${_command} \"${qt_variable}\"")
message(FATAL_ERROR "${_exec_name_text} call failed: ${return_code}")
endif()
endfunction()
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