Shooting in the dark

tests/CMakeLists.txt

@@ -20,9 +20,33 @@ add_subdirectory(qmoperators)
 add_subdirectory(solventeffect)
 
 target_link_libraries(mrchem-tests
-    PUBLIC
-    mrchem
-    Catch2::Catch2WithMain
+    PUBLIC mrchem Catch2::Catch2WithMain
+  )
+
+# RPATH fixing
+file(RELATIVE_PATH _rel ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_BINDIR} ${CMAKE_INSTALL_PREFIX})
+if(APPLE)
+  set(_rpath "@loader_path/${_rel}")
+else()
+  set(_rpath "\$ORIGIN/${_rel}")
+endif()
+file(TO_NATIVE_PATH "${_rpath}/${CMAKE_INSTALL_LIBDIR}" _RPATH)
+
+set_target_properties(mrchem-tests
+  PROPERTIES
+  MACOSX_RPATH ON
+  SKIP_BUILD_RPATH OFF
+  BUILD_WITH_INSTALL_RPATH OFF
+  INSTALL_RPATH "${_RPATH}"
+  INSTALL_RPATH_USE_LINK_PATH ON
+  )
+
+install(
+  TARGETS
+  mrchem-tests
+  RUNTIME
+  DESTINATION ${CMAKE_INSTALL_BINDIR}
+  COMPONENT bin
   )
 
 # Integration tests