diff --git a/cmake/macros.cmake b/cmake/macros.cmake
index 38c72b1df..44de00bfb 100644
--- a/cmake/macros.cmake
+++ b/cmake/macros.cmake
@@ -68,71 +68,21 @@ ENDIF(WIN32)
 SET(SD_TOOLS_EXECPREFIX "sd2-" CACHE STRING "Prefix for the tools executable names")
 MARK_AS_ADVANCED(SD_TOOLS_EXECPREFIX)
 
-# Determine the default value of the data, bin and lib (and man) folders.
-IF(IN_SOURCETREE)
-  IF(CMAKE_SIZEOF_VOID_P MATCHES 4)
-    SET(_DEFLIBDIR "lib")
-  ELSE()
-    SET(_DEFLIBDIR "lib64")
-  ENDIF()
-  IF(WIN32)
-    SET(SD_BINDIR bin CACHE PATH "Place where the executables should go")
-    SET(SD_LIBDIR ${_DEFLIBDIR} CACHE PATH "Place where the libraries should go")
-    SET(SD_INCLUDEDIR include CACHE PATH "Place where the include files should go")
-  ELSE(WIN32) #UNIX
-    SET(SD_BINDIR games CACHE PATH "Place where the executables should go")
-    SET(SD_LIBDIR ${_DEFLIBDIR}/games/speed-dreams-2 CACHE PATH "Place where the libraries should go")
-    SET(SD_INCLUDEDIR include/speed-dreams-2 CACHE PATH "Place where the include files should go")
-    SET(SD_MANDIR share/man CACHE PATH "Place where the manual pages should go")
-  ENDIF(WIN32)
-  MARK_AS_ADVANCED(SD_BINDIR)
-  MARK_AS_ADVANCED(SD_LIBDIR)
-  MARK_AS_ADVANCED(SD_INCLUDEDIR)
-  IF(UNIX)
-    MARK_AS_ADVANCED(SD_MANDIR)
-  ENDIF(UNIX)
-ELSE(IN_SOURCETREE)
-  SET(SD_LIBDIR ${SD_LIBDIR_ABS})
-  SET(SD_BINDIR ${SD_BINDIR_ABS})
-  SET(SD_INCLUDEDIR ${SD_INCLUDEDIR_ABS})
-  IF(UNIX)
-    SET(SD_MANDIR ${SD_MANDIR_ABS})
-  ENDIF(UNIX)
-ENDIF(IN_SOURCETREE)
+IF(WIN32)
+  SET(SD_BINDIR ${CMAKE_INSTALL_BINDIR} CACHE PATH "Place where the executables should go")
+ELSE()
+  SET(SD_BINDIR games CACHE PATH "Place where the executables should go")
+ENDIF()
 
-# Determine the aboslute paths of the data, bin and lib (and man) folders.
-
-IF(IS_ABSOLUTE ${SD_LIBDIR})
-  GET_FILENAME_COMPONENT(SD_LIBDIR_ABS ${SD_LIBDIR} ABSOLUTE)
-ELSE(IS_ABSOLUTE ${SD_LIBDIR})
-  GET_FILENAME_COMPONENT(SD_LIBDIR_ABS ${CMAKE_INSTALL_PREFIX}/${SD_LIBDIR} ABSOLUTE)
-ENDIF(IS_ABSOLUTE ${SD_LIBDIR})
-
-IF(IS_ABSOLUTE ${SD_BINDIR})
-  GET_FILENAME_COMPONENT(SD_BINDIR_ABS ${SD_BINDIR} ABSOLUTE)
-ELSE(IS_ABSOLUTE ${SD_BINDIR})
-  GET_FILENAME_COMPONENT(SD_BINDIR_ABS ${CMAKE_INSTALL_PREFIX}/${SD_BINDIR} ABSOLUTE)
-ENDIF(IS_ABSOLUTE ${SD_BINDIR})
-
-IF(IS_ABSOLUTE ${SD_INCLUDEDIR})
-  GET_FILENAME_COMPONENT(SD_INCLUDEDIR_ABS ${SD_INCLUDEDIR} ABSOLUTE)
-ELSE(IS_ABSOLUTE ${SD_INCLUDEDIR})
-  GET_FILENAME_COMPONENT(SD_INCLUDEDIR_ABS ${CMAKE_INSTALL_PREFIX}/${SD_INCLUDEDIR} ABSOLUTE)
-ENDIF(IS_ABSOLUTE ${SD_INCLUDEDIR})
-
-IF(UNIX)
-  IF(IS_ABSOLUTE ${SD_MANDIR})
-    GET_FILENAME_COMPONENT(SD_MANDIR_ABS ${SD_MANDIR} ABSOLUTE)
-  ELSE(IS_ABSOLUTE ${SD_MANDIR})
-    GET_FILENAME_COMPONENT(SD_MANDIR_ABS ${CMAKE_INSTALL_PREFIX}/${SD_MANDIR} ABSOLUTE)
-  ENDIF(IS_ABSOLUTE ${SD_MANDIR})
-ENDIF(UNIX)
+SET(SD_LIBDIR ${CMAKE_INSTALL_LIBDIR}/games/speed-dreams-2 CACHE PATH "Place where the libraries should go")
+SET(SD_INCLUDEDIR ${CMAKE_INSTALL_INCLUDEDIR}/speed-dreams-2 CACHE PATH "Place where the include files should go")
+SET(SD_MANDIR ${CMAKE_INSTALL_MANDIR} CACHE PATH "Place where the manual pages should go")
 
 STRING(REGEX REPLACE "^(.*[^/])/*$" "\\1" SD_LOCALDIR_TMP ${SD_LOCALDIR})
 SET(SD_LOCALDIR ${SD_LOCALDIR_TMP})
 
 SET(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_LIST_DIR})
-SET(CMAKE_INSTALL_RPATH "${SD_LIBDIR_ABS}/lib")
+SET(CMAKE_INSTALL_RPATH ${CMAKE_INSTALL_PREFIX}/${SD_LIBDIR}/lib)
 
 # Configuration options macros.
 INCLUDE(${CMAKE_CURRENT_LIST_DIR}/options.cmake)