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lxqt-build-tools-packaging/cmake/FindInstallConfigPath.cmake

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# XDG standards expects system-wide configuration files in the /etc/xdg/lxqt location.
# Unfortunately QSettings we are using internally can be overriden in the Qt compilation
# time to use different path for system-wide configs. (for example configure ... -sysconfdir /etc/settings ...)
# This path can be found calling Qt4's qmake:
# qmake -query QT_INSTALL_CONFIGURATION
#
find_package(Qt5Core REQUIRED)
if(NOT DEFINED LXQT_ETC_XDG_DIR)
get_target_property(QT_QMAKE_EXECUTABLE ${Qt5Core_QMAKE_EXECUTABLE} IMPORTED_LOCATION)
message(STATUS "${QT_QMAKE_EXECUTABLE}")
if(NOT QT_QMAKE_EXECUTABLE)
message(FATAL_ERROR "LXQT_ETC_XDG_DIR: qmake executable not found (included before qt was configured?)")
endif()
execute_process(COMMAND ${QT_QMAKE_EXECUTABLE} -query QT_INSTALL_CONFIGURATION
OUTPUT_VARIABLE LXQT_ETC_XDG_DIR
OUTPUT_STRIP_TRAILING_WHITESPACE)
message(STATUS "LXQT_ETC_XDG_DIR autodetected as '${LXQT_ETC_XDG_DIR}'")
message(STATUS "You can set it manually with -DLXQT_ETC_XDG_DIR=<value>")
message(STATUS "")
endif ()