--- calligra-3.2.1/CMakeLists.txt

+++ calligra-3.2.1/CMakeLists.txt

@@ -108,7 +108,7 @@ message(STATUS "Release build: ${RELEASE

 if (CMAKE_VERSION VERSION_LESS "3.1")

     set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

 else ()

-    set (CMAKE_CXX_STANDARD 11)

+    set (CMAKE_CXX_STANDARD 17)

 endif ()

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