diff --git a/CMakeLists.txt b/CMakeLists.txt
index 92040267e..3ad2d24fe 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -432,27 +432,8 @@ set(LIBRARY_OUTPUT_PATH "" CACHE INTERNAL
 # install tree.
 set(CMAKE_SKIP_RPATH ON CACHE INTERNAL "CMake does not need RPATHs.")
 
-set(CMAKE_DATA_DIR "share/cmake-${CMake_VERSION_MAJOR}.${CMake_VERSION_MINOR}" CACHE STRING
-  "Install location for data (relative to prefix).")
-set(CMAKE_DOC_DIR "doc/cmake-${CMake_VERSION_MAJOR}.${CMake_VERSION_MINOR}" CACHE STRING
-  "Install location for documentation (relative to prefix).")
-set(CMAKE_MAN_DIR "man" CACHE STRING
-  "Install location for man pages (relative to prefix).")
-mark_as_advanced(CMAKE_DATA_DIR CMAKE_DOC_DIR CMAKE_MAN_DIR)
-if(CYGWIN AND EXISTS "${CMAKE_ROOT}/Modules/CPack.cmake")
-  # Force doc, data and man dirs to conform to cygwin layout.
-  set(CMAKE_DOC_DIR  "share/doc/cmake-${CMake_VERSION}")
-  set(CMAKE_DATA_DIR "share/cmake-${CMake_VERSION}")
-  set(CMAKE_MAN_DIR  "share/man")
-  # let the user know we just forced these values
-  message(STATUS "Setup for Cygwin packaging")
-  message(STATUS "Override cache CMAKE_DOC_DIR = ${CMAKE_DOC_DIR}")
-  message(STATUS "Override cache CMAKE_DATA_DIR = ${CMAKE_DATA_DIR}")
-  message(STATUS "Override cache CMAKE_MAN_DIR = ${CMAKE_MAN_DIR}")
-endif()
-string(REGEX REPLACE "^/" "" CMAKE_DATA_DIR "${CMAKE_DATA_DIR}")
-string(REGEX REPLACE "^/" "" CMAKE_DOC_DIR "${CMAKE_DOC_DIR}")
-string(REGEX REPLACE "^/" "" CMAKE_MAN_DIR "${CMAKE_MAN_DIR}")
+# Load install destinations.
+include(Source/CMakeInstallDestinations.cmake)
 
 if(BUILD_TESTING)
   include(${CMake_SOURCE_DIR}/Tests/CMakeInstall.cmake)
diff --git a/Source/CMakeInstallDestinations.cmake b/Source/CMakeInstallDestinations.cmake
new file mode 100644
index 000000000..33e8ce863
--- /dev/null
+++ b/Source/CMakeInstallDestinations.cmake
@@ -0,0 +1,36 @@
+# Keep formatting here consistent with bootstrap script expectations.
+set(CMAKE_DATA_DIR_DEFAULT "share/cmake-${CMake_VERSION}") # OTHER
+if(BEOS)
+  set(CMAKE_MAN_DIR_DEFAULT "documentation/man") # HAIKU
+  set(CMAKE_DOC_DIR_DEFAULT "documentation/doc/cmake-${CMake_VERSION}") # HAIKU
+elseif(CYGWIN)
+  set(CMAKE_DOC_DIR_DEFAULT "share/doc/cmake-${CMake_VERSION}") # CYGWIN
+  set(CMAKE_MAN_DIR_DEFAULT "share/man") # CYGWIN
+else()
+  set(CMAKE_DOC_DIR_DEFAULT "doc/cmake-${CMake_VERSION}") # OTHER
+  set(CMAKE_MAN_DIR_DEFAULT "man") # OTHER
+endif()
+
+set(CMAKE_DATA_DIR_DESC "data")
+set(CMAKE_DOC_DIR_DESC "docs")
+set(CMAKE_MAN_DIR_DESC "man pages")
+
+foreach(v
+    CMAKE_DATA_DIR
+    CMAKE_DOC_DIR
+    CMAKE_MAN_DIR
+    )
+  # Populate the cache with empty values so we know when the user sets them.
+  set(${v} "" CACHE STRING "")
+  set_property(CACHE ${v} PROPERTY HELPSTRING
+    "Location under install prefix for ${${v}_DESC} (default \"${${v}_DEFAULT}\")"
+    )
+  set_property(CACHE ${v} PROPERTY ADVANCED 1)
+
+  # Use the default when the user did not set this variable.
+  if(NOT ${v})
+    set(${v} "${${v}_DEFAULT}")
+  endif()
+  # Remove leading slash to treat as relative to install prefix.
+  string(REGEX REPLACE "^/" "" ${v} "${${v}}")
+endforeach()
diff --git a/bootstrap b/bootstrap
index 92a88e005..1e7567f95 100755
--- a/bootstrap
+++ b/bootstrap
@@ -23,6 +23,15 @@ cmake_version_component()
 "
 }
 
+# Install destination extraction function.
+cmake_install_dest_default()
+{
+  cat "${cmake_source_dir}/Source/CMakeInstallDestinations.cmake" | sed -n '
+/^ *set(CMAKE_'"${1}"'_DIR_DEFAULT.*) # '"${2}"'$/ {
+  s/^ *set(CMAKE_'"${1}"'_DIR_DEFAULT *"\([^"]*\)").*$/\1/;p;q;}
+'
+}
+
 cmake_toupper()
 {
     echo "$1" | sed 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'
@@ -47,9 +56,12 @@ if [ "$cmake_version_rc" != "" ]; then
   cmake_version="${cmake_version}-rc${cmake_version_rc}"
 fi
 
-cmake_data_dir="share/cmake-${cmake_version_major}.${cmake_version_minor}"
-cmake_doc_dir="doc/cmake-${cmake_version_major}.${cmake_version_minor}"
-cmake_man_dir="man"
+cmake_data_dir_keyword="OTHER"
+cmake_doc_dir_keyword="OTHER"
+cmake_man_dir_keyword="OTHER"
+cmake_data_dir=""
+cmake_doc_dir=""
+cmake_man_dir=""
 cmake_init_file=""
 cmake_bootstrap_system_libs=""
 cmake_bootstrap_qt_gui=""
@@ -58,6 +70,8 @@ cmake_bootstrap_qt_qmake=""
 # Determine whether this is a Cygwin environment.
 if echo "${cmake_system}" | grep CYGWIN >/dev/null 2>&1; then
   cmake_system_cygwin=true
+  cmake_doc_dir_keyword="CYGWIN"
+  cmake_man_dir_keyword="CYGWIN"
 else
   cmake_system_cygwin=false
 fi
@@ -79,6 +93,8 @@ fi
 # Determine whether this is BeOS
 if echo "${cmake_system}" | grep BeOS >/dev/null 2>&1; then
   cmake_system_beos=true
+  cmake_doc_dir_keyword="HAIKU"
+  cmake_man_dir_keyword="HAIKU"
 else
   cmake_system_beos=false
 fi
@@ -86,6 +102,8 @@ fi
 # Determine whether this is Haiku
 if echo "${cmake_system}" | grep Haiku >/dev/null 2>&1; then
   cmake_system_haiku=true
+  cmake_doc_dir_keyword="HAIKU"
+  cmake_man_dir_keyword="HAIKU"
 else
   cmake_system_haiku=false
 fi
@@ -164,12 +182,15 @@ if ${cmake_system_mingw}; then
   fi
 elif ${cmake_system_haiku}; then
   cmake_default_prefix=`finddir B_COMMON_DIRECTORY`
-  cmake_man_dir="documentation/man"
-  cmake_doc_dir="documentation/doc/cmake-${cmake_version}"
 else
   cmake_default_prefix="/usr/local"
 fi
 
+# Lookup default install destinations.
+cmake_data_dir_default="`cmake_install_dest_default DATA ${cmake_data_dir_keyword}`"
+cmake_doc_dir_default="`cmake_install_dest_default DOC ${cmake_doc_dir_keyword}`"
+cmake_man_dir_default="`cmake_install_dest_default MAN ${cmake_man_dir_keyword}`"
+
 CMAKE_KNOWN_C_COMPILERS="cc gcc xlc icc tcc"
 CMAKE_KNOWN_CXX_COMPILERS="aCC xlC CC g++ c++ icc como "
 CMAKE_KNOWN_MAKE_PROCESSORS="gmake make"
@@ -360,11 +381,11 @@ Directory and file names:
   --prefix=PREFIX         install files in tree rooted at PREFIX
                           ['"${cmake_default_prefix}"']
   --datadir=DIR           install data files in PREFIX/DIR
-                          ['"${cmake_data_dir}"']
+                          ['"${cmake_data_dir_default}"']
   --docdir=DIR            install documentation files in PREFIX/DIR
-                          ['"${cmake_doc_dir}"']
+                          ['"${cmake_doc_dir_default}"']
   --mandir=DIR            install man pages files in PREFIX/DIR/manN
-                          ['"${cmake_man_dir}"']
+                          ['"${cmake_man_dir_default}"']
 '
   exit 10
 }
@@ -1408,7 +1429,7 @@ cmake_report cmVersionConfig.h${_tmp} "#define CMake_VERSION_PATCH ${cmake_versi
 cmake_report cmVersionConfig.h${_tmp} "#define CMake_VERSION_TWEAK ${cmake_version_tweak}"
 cmake_report cmVersionConfig.h${_tmp} "#define CMake_VERSION \"${cmake_version}\""
 cmake_report cmConfigure.h${_tmp} "#define CMAKE_ROOT_DIR \"${cmake_root_dir}\""
-cmake_report cmConfigure.h${_tmp} "#define CMAKE_DATA_DIR \"/${cmake_data_dir}\""
+cmake_report cmConfigure.h${_tmp} "#define CMAKE_DATA_DIR \"/bootstrap-not-insalled\""
 cmake_report cmConfigure.h${_tmp} "#define CMAKE_BOOTSTRAP"
 
 # Regenerate configured headers