Don't try to install Qt plugins outside of the install prefix
Even if QMake tells us that would be the right location because it breaks development setups which use a custom install prefix and set QT_PLUGIN_PATH accordingly.
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fc9e1ff703
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@ -382,12 +382,22 @@ if (NOT META_NO_INSTALL_TARGETS AND ENABLE_INSTALL_TARGETS)
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query_qmake_variable(QT_INSTALL_PLUGINS)
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endif ()
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if (QT_INSTALL_PLUGINS)
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set(LIBRARY_DESTINATION ${QT_INSTALL_PLUGINS})
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else ()
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string(FIND "${QT_INSTALL_PLUGINS}" "${CMAKE_INSTALL_PREFIX}"
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CMAKE_INSTALL_PREFIX_INDEX_IN_QT_INSTALL_PLUGINS)
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if ("${CMAKE_INSTALL_PREFIX_INDEX_IN_QT_INSTALL_PLUGINS}" EQUAL 0)
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set(LIBRARY_DESTINATION ${QT_INSTALL_PLUGINS})
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else ()
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message(
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WARNING
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"According to qmake the Qt plugin directory is \"${QT_INSTALL_PLUGINS}\". However, that path is not within the install prefix \"${CMAKE_INSTALL_PREFIX}\" and therefore ignored."
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)
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endif ()
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endif ()
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if (NOT LIBRARY_DESTINATION)
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set(LIBRARY_DESTINATION lib${SELECTED_LIB_SUFFIX}/qt/plugins)
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message(
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WARNING
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"Unable to detect appropriate install directory for Qt plugins (assuming \"${LIBRARY_DESTINATION}\")."
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"Unable to detect appropriate install directory for Qt plugins (assuming \"${LIBRARY_DESTINATION}\"). Set QT_PLUGIN_DIR to specify the directory to install Qt plugins to manually."
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)
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endif ()
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endif ()
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