diff -rupN --no-dereference gmsh-4.6.0-source/CMakeLists.txt gmsh-4.6.0-source-new/CMakeLists.txt
--- gmsh-4.6.0-source/CMakeLists.txt	2020-06-23 09:36:32.743203267 +0200
+++ gmsh-4.6.0-source-new/CMakeLists.txt	2020-06-23 09:36:32.879202567 +0200
@@ -1872,7 +1872,7 @@ endif()
 if(ENABLE_BUILD_LIB OR ENABLE_BUILD_SHARED OR ENABLE_BUILD_DYNAMIC)
   install(FILES ${GMSH_API} DESTINATION ${GMSH_INC})
   install(FILES ${GMSH_PY} DESTINATION ${PYTHON3_SITE_PACKAGES})
-  install(FILES ${GMSH_JL} DESTINATION ${GMSH_LIB})
+  install(FILES ${GMSH_JL} DESTINATION share/gmsh)
   if(ENABLE_PRIVATE_API)
     install(FILES ${GMSH_PRIVATE_API} DESTINATION ${GMSH_INC}/gmsh)
   endif()