diff -rupN --no-dereference geos-3.8.1/CMakeLists.txt geos-3.8.1-new/CMakeLists.txt
--- geos-3.8.1/CMakeLists.txt	2020-01-05 17:44:53.000000000 +0100
+++ geos-3.8.1-new/CMakeLists.txt	2020-03-11 14:56:49.760174088 +0100
@@ -281,16 +281,16 @@ configure_file(cmake/geos-config.cmake
 
 install(TARGETS geos geos_cxx_flags
   EXPORT geos-targets
-  LIBRARY DESTINATION lib NAMELINK_SKIP
-  ARCHIVE DESTINATION lib
+  LIBRARY DESTINATION lib${LIB_SUFFIX} NAMELINK_SKIP
+  ARCHIVE DESTINATION lib${LIB_SUFFIX}
   RUNTIME DESTINATION bin
   INCLUDES DESTINATION include
   )
 
 install(TARGETS geos_c
   EXPORT geos-targets
-  LIBRARY DESTINATION lib
-  ARCHIVE DESTINATION lib
+  LIBRARY DESTINATION lib${LIB_SUFFIX}
+  ARCHIVE DESTINATION lib${LIB_SUFFIX}
   RUNTIME DESTINATION bin
   INCLUDES DESTINATION include
   )
@@ -298,12 +298,12 @@ install(TARGETS geos_c
 install(EXPORT geos-targets
   FILE geos-targets.cmake
   NAMESPACE GEOS::
-  DESTINATION lib/cmake/GEOS)
+  DESTINATION lib${LIB_SUFFIX}/cmake/GEOS)
 
 install(FILES
   "${CMAKE_CURRENT_BINARY_DIR}/geos-config.cmake"
   "${CMAKE_CURRENT_BINARY_DIR}/geos-config-version.cmake"
-  DESTINATION lib/cmake/GEOS)
+  DESTINATION lib${LIB_SUFFIX}/cmake/GEOS)
 install(DIRECTORY
   "${CMAKE_CURRENT_LIST_DIR}/include/geos"
   "${CMAKE_CURRENT_BINARY_DIR}/include/geos"
diff -rupN --no-dereference geos-3.8.1/tools/geos-config.cmake geos-3.8.1-new/tools/geos-config.cmake
--- geos-3.8.1/tools/geos-config.cmake	2019-10-29 23:44:33.000000000 +0100
+++ geos-3.8.1-new/tools/geos-config.cmake	2020-03-11 14:56:49.760174088 +0100
@@ -2,7 +2,7 @@
 
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=@CMAKE_INSTALL_PREFIX@/bin
-libdir=@CMAKE_INSTALL_PREFIX@/lib
+libdir=@CMAKE_INSTALL_PREFIX@/lib@LIB_SUFFIX@@LIB_SUFFIX@
 
 usage()
 {
@@ -44,22 +44,22 @@ case $1 in
       echo -I@CMAKE_INSTALL_PREFIX@/include
       ;;
     --libs)
-      echo -L@CMAKE_INSTALL_PREFIX@/lib -lgeos-@GEOS_VERSION_MAJOR@
+      echo -L@CMAKE_INSTALL_PREFIX@/lib@LIB_SUFFIX@ -lgeos-@GEOS_VERSION_MAJOR@
       ;;
     --clibs)
-      echo -L@CMAKE_INSTALL_PREFIX@/lib -lgeos_c
+      echo -L@CMAKE_INSTALL_PREFIX@/lib@LIB_SUFFIX@ -lgeos_c
       ;;
     --cclibs)
-      echo -L@CMAKE_INSTALL_PREFIX@/lib -lgeos
+      echo -L@CMAKE_INSTALL_PREFIX@/lib@LIB_SUFFIX@ -lgeos
       ;;
     --static-clibs)
-      echo -L@CMAKE_INSTALL_PREFIX@/lib -lgeos_c -lgeos -lm
+      echo -L@CMAKE_INSTALL_PREFIX@/lib@LIB_SUFFIX@ -lgeos_c -lgeos -lm
       ;;
     --static-cclibs)
-      echo -L@CMAKE_INSTALL_PREFIX@/lib -lgeos -lm
+      echo -L@CMAKE_INSTALL_PREFIX@/lib@LIB_SUFFIX@ -lgeos -lm
       ;;
     --ldflags)
-      echo -L@CMAKE_INSTALL_PREFIX@/lib 
+      echo -L@CMAKE_INSTALL_PREFIX@/lib@LIB_SUFFIX@
       ;;
     --includes)
       echo @CMAKE_INSTALL_PREFIX@/include