--- cmake/xapian-config.cmake.in	2019-03-02 02:45:31.000000000 +0100
+++ -	2019-05-15 15:59:12.059370469 +0200
@@ -1,4 +1,14 @@
-SET(prefix "@prefix@")
+get_filename_component(prefix "${CMAKE_CURRENT_LIST_DIR}/../../../" ABSOLUTE)
+# Use original install prefix when loaded through a "/usr move"
+# cross-prefix symbolic link such as /lib -> /usr/lib.
+get_filename_component(_realCurr "${CMAKE_CURRENT_LIST_DIR}" REALPATH)
+get_filename_component(_realOrig "@prefix@/lib/cmake/xapian" REALPATH)
+if(_realCurr STREQUAL _realOrig)
+  set(prefix "@prefix@")
+endif()
+unset(_realOrig)
+unset(_realCurr)
+
 SET(exec_prefix "@exec_prefix@")
 SET(XAPIAN_LIBRARIES "@libdir@/libxapian@LIBRARY_VERSION_SUFFIX@@SHLIBEXT@" CACHE FILEPATH "Libraries for Xapian")
 SET(XAPIAN_INCLUDE_DIR "@incdir@" CACHE PATH "Include path for Xapian")