diff -rupN --no-dereference gmsh-4.10.2-source/CMakeLists.txt gmsh-4.10.2-source-new/CMakeLists.txt
--- gmsh-4.10.2-source/CMakeLists.txt	2022-05-13 16:28:41.031593330 +0200
+++ gmsh-4.10.2-source-new/CMakeLists.txt	2022-05-13 16:28:41.035593330 +0200
@@ -270,7 +270,7 @@ if(ENABLE_RPATH)
   # when building, don't use the install RPATH already (but later on when
   # installing)
   set(CMAKE_BUILD_WITH_INSTALL_RPATH FALSE)
-  set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")
+  set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_LIBDIR}")
 
   # add the automatically determined parts of the RPATH which point to
   # directories outside the build tree to the install RPATH