https://github.com/lagadic/visp/issues/423

--- CMakeLists.txt.orig	2021-03-05 01:09:20 UTC
+++ CMakeLists.txt
@@ -230,7 +230,7 @@ else() # UNIX
     vp_update(VISP_LIB_INSTALL_PATH       "${CMAKE_INSTALL_LIBDIR}")
   endif()
   vp_update(VISP_BIN_INSTALL_PATH         "${CMAKE_INSTALL_BINDIR}")
-  vp_update(VISP_INSTALL_DATAROOTDIR      "${CMAKE_INSTALL_DATAROOTDIR}/visp-${VISP_VERSION}")
+  vp_update(VISP_INSTALL_DATAROOTDIR      "${CMAKE_INSTALL_DATAROOTDIR}/visp")
   vp_update(VISP_3P_LIB_INSTALL_PATH      "${VISP_LIB_INSTALL_PATH}/visp/3rdparty")
   vp_update(VISP_SAMPLES_SRC_INSTALL_PATH "${VISP_INSTALL_DATAROOTDIR}/samples")
   vp_update(VISP_JAR_INSTALL_PATH         "${VISP_INSTALL_DATAROOTDIR}/java")