diff -ur vigra-1.7.0-src/CMakeLists.txt vigra-1.7.0-src.new/CMakeLists.txt
--- vigra-1.7.0-src/CMakeLists.txt	2010-04-15 19:27:25.000000000 +0100
+++ vigra-1.7.0-src.new/CMakeLists.txt	2010-04-21 00:09:48.000000000 +0100
@@ -113,6 +113,8 @@
 INSTALL(DIRECTORY ${PROJECT_SOURCE_DIR}/include/vigra DESTINATION include)
 INSTALL(DIRECTORY ${PROJECT_BINARY_DIR}/include/vigra DESTINATION include)
 
+set(LIB_SUFFIX "" CACHE STRING "Define suffix of lib directory name (32/64)" )
+
 ##################################################
 #
 #     enable CPack package generation
@@ -145,8 +147,8 @@
 
 # export targets:
 #export(TARGETS all FILE 
-INSTALL(EXPORT vigra-targets DESTINATION lib/vigra)
-INSTALL(FILES ${PROJECT_BINARY_DIR}/lib/vigra/CMake/VigraConfig.cmake DESTINATION lib/vigra)
+INSTALL(EXPORT vigra-targets DESTINATION lib${LIB_SUFFIX}/vigra)
+INSTALL(FILES ${PROJECT_BINARY_DIR}/lib/vigra/CMake/VigraConfig.cmake DESTINATION lib${LIB_SUFFIX}/vigra)
 EXPORT(TARGETS vigraimpex FILE vigra-targets.cmake)
 
 ##################################################
@@ -205,7 +207,7 @@
 	MESSAGE( STATUS "---------------------------------------------------------" )
 
 MESSAGE( STATUS "  includes will be installed at: ${CMAKE_INSTALL_PREFIX}/include")
-MESSAGE( STATUS "  libraries will be installed at: ${CMAKE_INSTALL_PREFIX}/lib")
+MESSAGE( STATUS "  libraries will be installed at: ${CMAKE_INSTALL_PREFIX}/lib${LIB_SUFFIX}")
 
 IF (MSVC)
   MESSAGE( STATUS "  binaries and DLLs will be installed at: ${CMAKE_INSTALL_PREFIX}/bin")
diff -ur vigra-1.7.0-src/config/FindVIGRANUMPY_DEPENDENCIES.cmake vigra-1.7.0-src.new/config/FindVIGRANUMPY_DEPENDENCIES.cmake
--- vigra-1.7.0-src/config/FindVIGRANUMPY_DEPENDENCIES.cmake	2010-04-15 19:27:25.000000000 +0100
+++ vigra-1.7.0-src.new/config/FindVIGRANUMPY_DEPENDENCIES.cmake	2010-04-20 23:30:16.000000000 +0100
@@ -36,7 +36,7 @@
     ######################################################################
     IF(NOT DEFINED VIGRANUMPY_INSTALL_DIR OR VIGRANUMPY_INSTALL_DIR MATCHES "^$")
         execute_process ( COMMAND ${PYTHON_EXECUTABLE} -c 
-                         "from distutils.sysconfig import *; print get_python_lib()"
+                         "from distutils.sysconfig import *; print get_python_lib(1)"
                           OUTPUT_VARIABLE PYTHON_SITE_PACKAGES OUTPUT_STRIP_TRAILING_WHITESPACE)
         FILE(TO_CMAKE_PATH ${PYTHON_SITE_PACKAGES} VIGRANUMPY_INSTALL_DIR)
     ENDIF()
diff -ur vigra-1.7.0-src/src/impex/CMakeLists.txt vigra-1.7.0-src.new/src/impex/CMakeLists.txt
--- vigra-1.7.0-src/src/impex/CMakeLists.txt	2010-04-15 19:27:39.000000000 +0100
+++ vigra-1.7.0-src.new/src/impex/CMakeLists.txt	2010-04-20 23:24:44.000000000 +0100
@@ -62,5 +62,5 @@
 INSTALL(TARGETS vigraimpex
         EXPORT vigra-targets
         RUNTIME DESTINATION bin 
-        LIBRARY DESTINATION lib 
-        ARCHIVE DESTINATION lib)
+        LIBRARY DESTINATION lib${LIB_SUFFIX} 
+        ARCHIVE DESTINATION lib${LIB_SUFFIX})