diff -rupN --no-dereference gmsh-4.11.1-source/CMakeLists.txt gmsh-4.11.1-source-new/CMakeLists.txt
--- gmsh-4.11.1-source/CMakeLists.txt	2022-12-21 15:34:04.867442050 +0100
+++ gmsh-4.11.1-source-new/CMakeLists.txt	2022-12-21 15:34:04.872442050 +0100
@@ -275,7 +275,7 @@ 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