diff -up ./cmake_modules/SetupDirectories.cmake.libdir ./cmake_modules/SetupDirectories.cmake
--- ./cmake_modules/SetupDirectories.cmake.libdir	2014-05-05 18:27:34.066386294 -0400
+++ ./cmake_modules/SetupDirectories.cmake	2014-05-05 18:28:14.961891390 -0400
@@ -8,7 +8,7 @@ ENDIF (PROJECT_OS_WIN)
 STRING (TOLOWER ${PROJECT_NAME} projectNameLower)
 SET (PROJECT_INCLUDE_INSTALL_DIR "include/${projectNameLower}")
 SET (PROJECT_MANPAGE_INSTALL_DIR "share/man")
-SET (PROJECT_LIBRARY_INSTALL_DIR "lib")
+SET (PROJECT_LIBRARY_INSTALL_DIR "lib${LIB_SUFFIX}" CACHE PATH "Library installation directory")
 
 MESSAGE (STATUS "${PROJECT_NAME} will be installed to ${CMAKE_INSTALL_PREFIX}")
 MESSAGE (STATUS "Headers will be installed to ${CMAKE_INSTALL_PREFIX}/${PROJECT_INCLUDE_INSTALL_DIR}")