Attached is CPackRPM.cmake that fixes cases where symlink points to
locations outside packaging directory.

Please confirm that it fixes your problem. Patched CPackRPM.cmake is
from master branch so please replace the file in your 3.5.0 version of
CMake.

Thanks,
Domen

2016-03-24 9:48 GMT+01:00 Attila Krasznahorkay <attila.krasznahor...@gmail.com>:
> Hi Domen,
>
> Unfortunately I can't seem to create an easy-to-package example for the 
> issue. Since it seems that the file given to the install(...) command has to 
> be in a "very different place" than the source or binary directories for the 
> issue to come up. (My guess is that if the file shares some of its path with 
> the build directory, CPackRPM uses a different method for dealing with it 
> than if the two paths don't share any prefix.)
>
> In our case some files are picked up from a network drive, while the build 
> happens (naturally) on a local drive. I can reproduce the issue with a 
> CMakeLists.txt file like:
>
> cmake_minimum_required( VERSION 2.8 )
> project( CPackRPMLinkProblem )
>
> install( FILES /afs/cern.ch/.../some_link.txt DESTINATION . )
>
> set( CPACK_PACKAGE_RELOCATABLE TRUE )
> include( CPack )
>
> As long as the build directory's path name ends up being longer than the path 
> name of the file specified in the install(...) command, the RPM building 
> fails. As it does for instance here:
>
> http://atlas-computing.web.cern.ch/atlas-computing/links/distDirectory/nightlies/experimentalWebArea/nicos_web_areaCMAKE64BS6G49AnlOpt/NICOS_Log_rel_4/nicos_rpm_build.html
>
> Cheers,
>            Attila
>
>> On 23 Mar 2016, at 15:57, Domen Vrankar <domen.vran...@gmail.com> wrote:
>>
>> As a workaround you could set files that you would like to be excluded
>> from symlink relocation with CPACK_RPM_USER_FILELIST or
>> CPACK_RPM_<COMPONENT>_USER_FILELIST.
>>
>> I'll have a look at how this could be solved for later versions of CPack.
>> Do I understand correctly that those errors occur when a symlink is
>> pointing to another simlink outside your project?
>> Could you please provide a minimal example of all your cases?
>>
>> Thanks,
>> Domen
>>
>>
>> 2016-03-23 14:13 GMT+01:00 Attila Krasznahorkay
>> <attila.krasznahor...@gmail.com>:
>>> Hi Brad,
>>>
>>> I did. Then I get:
>>>
>>> CMake Error at 
>>> /afs/cern.ch/work/k/krasznaa/public/cmake/3.5.0/share/cmake-3.5/Modules/CPackRPM.cmake:981
>>>  (string):
>>> string begin index: 164 is out of range 0 - 156
>>> Call Stack (most recent call first):
>>> /afs/cern.ch/work/k/krasznaa/public/cmake/3.5.0/share/cmake-3.5/Modules/CPackRPM.cmake:1625
>>>  (cpack_rpm_prepare_install_files)
>>> /afs/cern.ch/work/k/krasznaa/public/cmake/3.5.0/share/cmake-3.5/Modules/CPackRPM.cmake:1787
>>>  (cpack_rpm_generate_package)
>>>
>>> You can find the full output here:
>>>
>>> http://atlas-computing.web.cern.ch/atlas-computing/links/distDirectory/nightlies/experimentalWebArea/nicos_web_areaCMAKE64BS6G49TrgOpt/NICOS_Log_rel_3/nicos_rpm_build.html
>>>
>>> Note that when I tried to build the project in a build area with a shorter 
>>> path, then the RPM building succeeded. Just because by chance in that case 
>>> in the expression
>>>
>>> string(SUBSTRING "${SYMLINK_POINT_}" ${WDR_LEN_} -1 SYMLINK_POINT_WD_)
>>>
>>> the work directory length was shorter than the length of the path outside 
>>> of the project.
>>>
>>> Of course this is the code that we're talking about:
>>>
>>> https://cmake.org/gitweb?p=cmake.git;a=blob;f=Modules/CPackRPM.cmake;h=7ffec136deabb8f28d6293cdc96e43cd4a2af70d;hb=HEAD#l994
>>>
>>> Cheers,
>>>             Attila
>>>
>>>> On 23 Mar 2016, at 13:50, Brad King <brad.k...@kitware.com> wrote:
>>>>
>>>> On 03/23/2016 08:44 AM, Attila Krasznahorkay wrote:
>>>>> CMake Error at /afs/cern.ch/sw/lcg/contrib/CMake/3.3.2/...
>>>>
>>>> Please try with CMake 3.5.
>>>>
>>>> -Brad
>>>>
>>>
>
#.rst:
# CPackRPM
# --------
#
# The builtin (binary) CPack RPM generator (Unix only)
#
# Variables specific to CPack RPM generator
# ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
#
# CPackRPM may be used to create RPM package using CPack.
# CPackRPM is a CPack generator thus it uses the ``CPACK_XXX`` variables
# used by CPack : https://cmake.org/Wiki/CMake:CPackConfiguration.
#
# CPackRPM has specific features which are controlled by the specifics
# :code:`CPACK_RPM_XXX` variables.
#
# :code:`CPACK_RPM_<COMPONENT>_XXXX` variables may be used in order to have
# **component** specific values.  Note however that ``<COMPONENT>`` refers to the
# **grouping name** written in upper case. It may be either a component name or
# a component GROUP name. Usually those vars correspond to RPM spec file
# entities, one may find information about spec files here
# http://www.rpm.org/wiki/Docs
#
# .. note::
#
#  `<COMPONENT>` part of variables is prefered to be in upper case (for e.g. if
#  component is named `foo` then use `CPACK_RPM_FOO_XXXX` variable name format)
#  as is with other `CPACK_<COMPONENT>_XXXX` variables.
#  For the purposes of back compatibility (CMake/CPack version 3.5 and lower)
#  support for same cased component (e.g. `fOo` would be used as
#  `CPACK_RPM_fOo_XXXX`) is still supported for variables defined in older
#  versions of CMake/CPack but is not guaranteed for variables that
#  will be added in the future. For the sake of back compatibility same cased
#  component variables also override upper cased versions where both are
#  present.
#
# List of CPack/RPM specific variables:
# https://cmake.org/Wiki/CMake:CPackPackageGenerators#DEB_.28UNIX_only.29 .
# However as a handy reminder here comes the list of specific variables:
#
# .. variable:: CPACK_RPM_PACKAGE_SUMMARY
#               CPACK_RPM_<component>_PACKAGE_SUMMARY
#
#  The RPM package summary.
#
#  * Mandatory : YES
#  * Default   : CPACK_PACKAGE_DESCRIPTION_SUMMARY
#
# .. variable:: CPACK_RPM_PACKAGE_NAME
#               CPACK_RPM_<component>_PACKAGE_NAME
#
#  The RPM package name.
#
#  * Mandatory : YES
#  * Default   : CPACK_PACKAGE_NAME
#
# .. variable:: CPACK_RPM_PACKAGE_VERSION
#
#  The RPM package version.
#
#  * Mandatory : YES
#  * Default   : CPACK_PACKAGE_VERSION
#
# .. variable:: CPACK_RPM_PACKAGE_ARCHITECTURE
#               CPACK_RPM_<component>_PACKAGE_ARCHITECTURE
#
#  The RPM package architecture.
#
#  * Mandatory : YES
#  * Default   : Native architecture output by "uname -m"
#
#  This may be set to "noarch" if you know you are building a noarch package.
#
# .. variable:: CPACK_RPM_PACKAGE_RELEASE
#
#  The RPM package release.
#
#  * Mandatory : YES
#  * Default   : 1
#
#  This is the numbering of the RPM package itself, i.e. the version of the
#  packaging and not the version of the content (see
#  CPACK_RPM_PACKAGE_VERSION). One may change the default value if the
#  previous packaging was buggy and/or you want to put here a fancy Linux
#  distro specific numbering.
#
# .. variable:: CPACK_RPM_PACKAGE_LICENSE
#
#  The RPM package license policy.
#
#  * Mandatory : YES
#  * Default   : "unknown"
#
# .. variable:: CPACK_RPM_PACKAGE_GROUP
#               CPACK_RPM_<component>_PACKAGE_GROUP
#
#  The RPM package group.
#
#  * Mandatory : YES
#  * Default   : "unknown"
#
# .. variable:: CPACK_RPM_PACKAGE_VENDOR
#
#  The RPM package vendor.
#
#  * Mandatory : YES
#  * Default   : CPACK_PACKAGE_VENDOR if set or "unknown"
#
# .. variable:: CPACK_RPM_PACKAGE_URL
#               CPACK_RPM_<component>_PACKAGE_URL
#
#  The projects URL.
#
#  * Mandatory : NO
#  * Default   : -
#
# .. variable:: CPACK_RPM_PACKAGE_DESCRIPTION
#               CPACK_RPM_<component>_PACKAGE_DESCRIPTION
#
#  RPM package description.
#
#  * Mandatory : YES
#  * Default : CPACK_COMPONENT_<compName>_DESCRIPTION (component based installers
#    only) if set, CPACK_PACKAGE_DESCRIPTION_FILE if set or "no package
#    description available"
#
# .. variable:: CPACK_RPM_COMPRESSION_TYPE
#
#  RPM compression type.
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to override RPM compression type to be used to build the
#  RPM. For example some Linux distribution now default to lzma or xz
#  compression whereas older cannot use such RPM.  Using this one can enforce
#  compression type to be used.  Possible value are: lzma, xz, bzip2 and gzip.
#
# .. variable:: CPACK_RPM_PACKAGE_AUTOREQ
#               CPACK_RPM_<component>_PACKAGE_AUTOREQ
#
#  RPM spec autoreq field.
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to enable (1, yes) or disable (0, no) automatic shared libraries
#  dependency detection. Dependencies are added to requires list.
#
#  .. note::
#
#    By defalut automatic dependency detection is enabled by rpm generator.
#
# .. variable:: CPACK_RPM_PACKAGE_AUTOPROV
#               CPACK_RPM_<component>_PACKAGE_AUTOPROV
#
#  RPM spec autoprov field.
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to enable (1, yes) or disable (0, no) automatic listing of shared
#  libraries that are provided by the package. Shared libraries are added to
#  provides list.
#
#  .. note::
#
#    By defalut automatic provides detection is enabled by rpm generator.
#
# .. variable:: CPACK_RPM_PACKAGE_AUTOREQPROV
#               CPACK_RPM_<component>_PACKAGE_AUTOREQPROV
#
#  RPM spec autoreqprov field.
#
#  * Mandatory : NO
#  * Default   : -
#
#  Variable enables/disables autoreq and autoprov at the same time.
#  See :variable:`CPACK_RPM_PACKAGE_AUTOREQ` and :variable:`CPACK_RPM_PACKAGE_AUTOPROV`
#  for more details.
#
#  .. note::
#
#    By defalut automatic detection feature is enabled by rpm.
#
# .. variable:: CPACK_RPM_PACKAGE_REQUIRES
#               CPACK_RPM_<component>_PACKAGE_REQUIRES
#
#  RPM spec requires field.
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to set RPM dependencies (requires).  Note that you must enclose
#  the complete requires string between quotes, for example::
#
#   set(CPACK_RPM_PACKAGE_REQUIRES "python >= 2.5.0, cmake >= 2.8")
#
#  The required package list of an RPM file could be printed with::
#
#   rpm -qp --requires file.rpm
#
# .. variable:: CPACK_RPM_PACKAGE_CONFLICTS
#               CPACK_RPM_<component>_PACKAGE_CONFLICTS
#
#  RPM spec conflicts field.
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to set negative RPM dependencies (conflicts). Note that you must enclose
#  the complete requires string between quotes, for example::
#
#   set(CPACK_RPM_PACKAGE_CONFLICTS "libxml2")
#
#  The conflicting package list of an RPM file could be printed with::
#
#   rpm -qp --conflicts file.rpm
#
# .. variable:: CPACK_RPM_PACKAGE_REQUIRES_PRE
#               CPACK_RPM_<component>_PACKAGE_REQUIRES_PRE
#
#  RPM spec requires(pre) field.
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to set RPM preinstall dependencies (requires(pre)).  Note that you must enclose
#  the complete requires string between quotes, for example::
#
#   set(CPACK_RPM_PACKAGE_REQUIRES_PRE "shadow-utils, initscripts")
#
# .. variable:: CPACK_RPM_PACKAGE_REQUIRES_POST
#               CPACK_RPM_<component>_PACKAGE_REQUIRES_POST
#
#  RPM spec requires(post) field.
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to set RPM postinstall dependencies (requires(post)).  Note that you must enclose
#  the complete requires string between quotes, for example::
#
#   set(CPACK_RPM_PACKAGE_REQUIRES_POST "shadow-utils, initscripts")
#
#
# .. variable:: CPACK_RPM_PACKAGE_REQUIRES_POSTUN
#               CPACK_RPM_<component>_PACKAGE_REQUIRES_POSTUN
#
#  RPM spec requires(postun) field.
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to set RPM postuninstall dependencies (requires(postun)).  Note that you must enclose
#  the complete requires string between quotes, for example::
#
#   set(CPACK_RPM_PACKAGE_REQUIRES_POSTUN "shadow-utils, initscripts")
#
#
# .. variable:: CPACK_RPM_PACKAGE_REQUIRES_PREUN
#               CPACK_RPM_<component>_PACKAGE_REQUIRES_PREUN
#
#  RPM spec requires(preun) field.
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to set RPM preuninstall dependencies (requires(preun)).  Note that you must enclose
#  the complete requires string between quotes, for example::
#
#   set(CPACK_RPM_PACKAGE_REQUIRES_PREUN "shadow-utils, initscripts")
#
# .. variable:: CPACK_RPM_PACKAGE_SUGGESTS
#               CPACK_RPM_<component>_PACKAGE_SUGGESTS
#
#  RPM spec suggest field.
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to set weak RPM dependencies (suggests).  Note that you must
#  enclose the complete requires string between quotes.
#
# .. variable:: CPACK_RPM_PACKAGE_PROVIDES
#               CPACK_RPM_<component>_PACKAGE_PROVIDES
#
#  RPM spec provides field.
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to set RPM dependencies (provides).  The provided package list
#  of an RPM file could be printed with::
#
#   rpm -qp --provides file.rpm
#
# .. variable:: CPACK_RPM_PACKAGE_OBSOLETES
#               CPACK_RPM_<component>_PACKAGE_OBSOLETES
#
#  RPM spec obsoletes field.
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to set RPM packages that are obsoleted by this one.
#
# .. variable:: CPACK_RPM_PACKAGE_RELOCATABLE
#
#  build a relocatable RPM.
#
#  * Mandatory : NO
#  * Default   : CPACK_PACKAGE_RELOCATABLE
#
#  If this variable is set to TRUE or ON CPackRPM will try
#  to build a relocatable RPM package. A relocatable RPM may
#  be installed using::
#
#   rpm --prefix or --relocate
#
#  in order to install it at an alternate place see rpm(8).  Note that
#  currently this may fail if CPACK_SET_DESTDIR is set to ON.  If
#  CPACK_SET_DESTDIR is set then you will get a warning message but if there
#  is file installed with absolute path you'll get unexpected behavior.
#
# .. variable:: CPACK_RPM_SPEC_INSTALL_POST
#
#  * Mandatory : NO
#  * Default   : -
#  * Deprecated: YES
#
#  This way of specifying post-install script is deprecated, use
#  CPACK_RPM_POST_INSTALL_SCRIPT_FILE.
#  May be used to set an RPM post-install command inside the spec file.
#  For example setting it to "/bin/true" may be used to prevent
#  rpmbuild to strip binaries.
#
# .. variable:: CPACK_RPM_SPEC_MORE_DEFINE
#
#  RPM extended spec definitions lines.
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to add any %define lines to the generated spec file.
#
# .. variable:: CPACK_RPM_PACKAGE_DEBUG
#
#  Toggle CPackRPM debug output.
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be set when invoking cpack in order to trace debug information
#  during CPack RPM run. For example you may launch CPack like this::
#
#   cpack -D CPACK_RPM_PACKAGE_DEBUG=1 -G RPM
#
# .. variable:: CPACK_RPM_USER_BINARY_SPECFILE
#
#  A user provided spec file.
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be set by the user in order to specify a USER binary spec file
#  to be used by CPackRPM instead of generating the file.
#  The specified file will be processed by configure_file( @ONLY).
#  One can provide a component specific file by setting
#  CPACK_RPM_<componentName>_USER_BINARY_SPECFILE.
#
# .. variable:: CPACK_RPM_GENERATE_USER_BINARY_SPECFILE_TEMPLATE
#
#  Spec file template.
#
#  * Mandatory : NO
#  * Default   : -
#
#  If set CPack will generate a template for USER specified binary
#  spec file and stop with an error. For example launch CPack like this::
#
#   cpack -D CPACK_RPM_GENERATE_USER_BINARY_SPECFILE_TEMPLATE=1 -G RPM
#
#  The user may then use this file in order to hand-craft is own
#  binary spec file which may be used with CPACK_RPM_USER_BINARY_SPECFILE.
#
# .. variable:: CPACK_RPM_PRE_INSTALL_SCRIPT_FILE
#               CPACK_RPM_PRE_UNINSTALL_SCRIPT_FILE
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to embed a pre (un)installation script in the spec file.
#  The refered script file(s) will be read and directly
#  put after the %pre or %preun section
#  If CPACK_RPM_COMPONENT_INSTALL is set to ON the (un)install script for
#  each component can be overridden with
#  CPACK_RPM_<COMPONENT>_PRE_INSTALL_SCRIPT_FILE and
#  CPACK_RPM_<COMPONENT>_PRE_UNINSTALL_SCRIPT_FILE.
#  One may verify which scriptlet has been included with::
#
#   rpm -qp --scripts  package.rpm
#
# .. variable:: CPACK_RPM_POST_INSTALL_SCRIPT_FILE
#               CPACK_RPM_POST_UNINSTALL_SCRIPT_FILE
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to embed a post (un)installation script in the spec file.
#  The refered script file(s) will be read and directly
#  put after the %post or %postun section.
#  If CPACK_RPM_COMPONENT_INSTALL is set to ON the (un)install script for
#  each component can be overridden with
#  CPACK_RPM_<COMPONENT>_POST_INSTALL_SCRIPT_FILE and
#  CPACK_RPM_<COMPONENT>_POST_UNINSTALL_SCRIPT_FILE.
#  One may verify which scriptlet has been included with::
#
#   rpm -qp --scripts  package.rpm
#
# .. variable:: CPACK_RPM_USER_FILELIST
#               CPACK_RPM_<COMPONENT>_USER_FILELIST
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to explicitly specify %(<directive>) file line
#  in the spec file. Like %config(noreplace) or any other directive
#  that be found in the %files section. Since CPackRPM is generating
#  the list of files (and directories) the user specified files of
#  the CPACK_RPM_<COMPONENT>_USER_FILELIST list will be removed from
#  the generated list.
#
# .. variable:: CPACK_RPM_CHANGELOG_FILE
#
#  RPM changelog file.
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to embed a changelog in the spec file.
#  The refered file will be read and directly put after the %changelog
#  section.
#
# .. variable:: CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST
#
#  list of path to be excluded.
#
#  * Mandatory : NO
#  * Default   : /etc /etc/init.d /usr /usr/share /usr/share/doc /usr/bin /usr/lib /usr/lib64 /usr/include
#
#  May be used to exclude path (directories or files) from the auto-generated
#  list of paths discovered by CPack RPM. The defaut value contains a
#  reasonable set of values if the variable is not defined by the user. If the
#  variable is defined by the user then CPackRPM will NOT any of the default
#  path.  If you want to add some path to the default list then you can use
#  CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST_ADDITION variable.
#
# .. variable:: CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST_ADDITION
#
#  additional list of path to be excluded.
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to add more exclude path (directories or files) from the initial
#  default list of excluded paths. See CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST.
#
# .. variable:: CPACK_RPM_RELOCATION_PATHS
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to specify more than one relocation path per relocatable RPM.
#  Variable contains a list of relocation paths that if relative are prefixed
#  by the value of CPACK_RPM_<COMPONENT>_PACKAGE_PREFIX or by the value of
#  CPACK_PACKAGING_INSTALL_PREFIX if the component version is not provided.
#  Variable is not component based as its content can be used to set a different
#  path prefix for e.g. binary dir and documentation dir at the same time.
#  Only prefixes that are required by a certain component are added to that
#  component - component must contain at least one file/directory/symbolic link
#  with CPACK_RPM_RELOCATION_PATHS prefix for a certain relocation path
#  to be added. Package will not contain any relocation paths if there are no
#  files/directories/symbolic links on any of the provided prefix locations.
#  Packages that either do not contain any relocation paths or contain
#  files/directories/symbolic links that are outside relocation paths print
#  out an AUTHOR_WARNING that RPM will be partially relocatable.
#
# .. variable:: CPACK_RPM_<COMPONENT>_PACKAGE_PREFIX
#
#  * Mandatory : NO
#  * Default   : CPACK_PACKAGING_INSTALL_PREFIX
#
#  May be used to set per component CPACK_PACKAGING_INSTALL_PREFIX for
#  relocatable RPM packages.
#
# .. variable:: CPACK_RPM_NO_INSTALL_PREFIX_RELOCATION
#               CPACK_RPM_NO_<COMPONENT>_INSTALL_PREFIX_RELOCATION
#
#  * Mandatory : NO
#  * Default   : CPACK_PACKAGING_INSTALL_PREFIX or CPACK_RPM_<COMPONENT>_PACKAGE_PREFIX
#                are treated as one of relocation paths
#
#  May be used to remove CPACK_PACKAGING_INSTALL_PREFIX and CPACK_RPM_<COMPONENT>_PACKAGE_PREFIX
#  from relocatable RPM prefix paths.
#
# .. variable:: CPACK_RPM_ADDITIONAL_MAN_DIRS
#
#  * Mandatory : NO
#  * Default   : -
#
#  May be used to set additional man dirs that could potentially be compressed
#  by brp-compress RPM macro. Variable content must be a list of regular
#  expressions that point to directories containing man files or to man files
#  directly. Note that in order to compress man pages a path must also be
#  present in brp-compress RPM script and that brp-compress script must be
#  added to RPM configuration by the operating system.
#
#  Regular expressions that are added by default were taken from brp-compress
#  RPM macro:
#
#  - /usr/man/man.*
#  - /usr/man/.*/man.*
#  - /usr/info.*
#  - /usr/share/man/man.*
#  - /usr/share/man/.*/man.*
#  - /usr/share/info.*
#  - /usr/kerberos/man.*
#  - /usr/X11R6/man/man.*
#  - /usr/lib/perl5/man/man.*
#  - /usr/share/doc/.*/man/man.*
#  - /usr/lib/.*/man/man.*
#
# Packaging of Symbolic Links
# ^^^^^^^^^^^^^^^^^^^^^^^^^^^
#
# CPackRPM supports packaging of symbolic links::
#
#   execute_process(COMMAND ${CMAKE_COMMAND}
#     -E create_symlink <relative_path_location> <symlink_name>)
#   install(FILES ${CMAKE_CURRENT_BINARY_DIR}/<symlink_name>
#     DESTINATION <symlink_location> COMPONENT libraries)
#
# Symbolic links will be optimized (paths will be shortened if possible)
# before being added to the package or if multiple relocation paths are
# detected, a post install symlink relocation script will be generated.
#
# Symbolic links may point to locations that are not packaged by the same
# package (either a different component or even not packaged at all) but
# those locations will be treated as if they were a part of the package
# while determining if symlink should be either created or present in a
# post install script - depending on relocation paths.
#
# Currenty there are a few limitations though:
#
# * Only symbolic links with relative path can be packaged.
#
# * For component based packaging component interdependency is not checked
#   when processing symbolic links. Symbolic links pointing to content of
#   a different component are treated the same way as if pointing to location
#   that will not be packaged.
#
# * Symbolic links pointing to a location through one or more intermediate
#   symbolic links will not be handled differently - if the intermediate
#   symbolic link(s) is also on a relocatable path, relocating it during
#   package installation may cause initial symbolic link to point to an
#   invalid location.

#=============================================================================
# Copyright 2007-2016 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
#  License text for the above reference.)

# Author: Eric Noulard with the help of Alexander Neundorf.

function(cpack_rpm_prepare_relocation_paths)
  # set appropriate prefix, remove possible trailing slash and convert backslashes to slashes
  if(CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_PREFIX)
    file(TO_CMAKE_PATH "${CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_PREFIX}" PATH_PREFIX)
  elseif(CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT_UPPER}_PACKAGE_PREFIX)
    file(TO_CMAKE_PATH "${CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT_UPPER}_PACKAGE_PREFIX}" PATH_PREFIX)
  else()
    file(TO_CMAKE_PATH "${CPACK_PACKAGING_INSTALL_PREFIX}" PATH_PREFIX)
  endif()

  set(RPM_RELOCATION_PATHS "${CPACK_RPM_RELOCATION_PATHS}")
  list(REMOVE_DUPLICATES RPM_RELOCATION_PATHS)

  # set base path prefix
  if(EXISTS "${WDIR}/${PATH_PREFIX}")
    if(NOT CPACK_RPM_NO_INSTALL_PREFIX_RELOCATION AND
       NOT CPACK_RPM_NO_${CPACK_RPM_PACKAGE_COMPONENT}_INSTALL_PREFIX_RELOCATION AND
       NOT CPACK_RPM_NO_${CPACK_RPM_PACKAGE_COMPONENT_UPPER}_INSTALL_PREFIX_RELOCATION)
      set(TMP_RPM_PREFIXES "${TMP_RPM_PREFIXES}Prefix: ${PATH_PREFIX}\n")
      list(APPEND RPM_USED_PACKAGE_PREFIXES "${PATH_PREFIX}")

      if(CPACK_RPM_PACKAGE_DEBUG)
        message("CPackRPM:Debug: removing '${PATH_PREFIX}' from relocation paths")
      endif()
    endif()
  endif()

  # set other path prefixes
  foreach(RELOCATION_PATH ${RPM_RELOCATION_PATHS})
    if(IS_ABSOLUTE "${RELOCATION_PATH}")
      set(PREPARED_RELOCATION_PATH "${RELOCATION_PATH}")
    else()
      set(PREPARED_RELOCATION_PATH "${PATH_PREFIX}/${RELOCATION_PATH}")
    endif()

    if(EXISTS "${WDIR}/${PREPARED_RELOCATION_PATH}")
      set(TMP_RPM_PREFIXES "${TMP_RPM_PREFIXES}Prefix: ${PREPARED_RELOCATION_PATH}\n")
      list(APPEND RPM_USED_PACKAGE_PREFIXES "${PREPARED_RELOCATION_PATH}")
    endif()
  endforeach()

  # warn about all the paths that are not relocatable
  cmake_policy(PUSH)
    # Tell file(GLOB_RECURSE) not to follow directory symlinks
    # even if the project does not set this policy to NEW.
    cmake_policy(SET CMP0009 NEW)
    file(GLOB_RECURSE FILE_PATHS_ "${WDIR}/*")
  cmake_policy(POP)
  foreach(TMP_PATH ${FILE_PATHS_})
    string(LENGTH "${WDIR}" WDIR_LEN)
    string(SUBSTRING "${TMP_PATH}" ${WDIR_LEN} -1 TMP_PATH)
    unset(TMP_PATH_FOUND_)

    foreach(RELOCATION_PATH ${RPM_USED_PACKAGE_PREFIXES})
      file(RELATIVE_PATH REL_PATH_ "${RELOCATION_PATH}" "${TMP_PATH}")
      string(SUBSTRING "${REL_PATH_}" 0 2 PREFIX_)

      if(NOT "${PREFIX_}" STREQUAL "..")
        set(TPM_PATH_FOUND_ TRUE)
        break()
      endif()
    endforeach()

    if(NOT TPM_PATH_FOUND_)
      message(AUTHOR_WARNING "CPackRPM:Warning: Path ${TMP_PATH} is not on one of the relocatable paths! Package will be partially relocatable.")
    endif()
  endforeach()

  set(RPM_USED_PACKAGE_PREFIXES "${RPM_USED_PACKAGE_PREFIXES}" PARENT_SCOPE)
  set(TMP_RPM_PREFIXES "${TMP_RPM_PREFIXES}" PARENT_SCOPE)
endfunction()

function(cpack_rpm_prepare_content_list)
  # get files list
  cmake_policy(PUSH)
    cmake_policy(SET CMP0009 NEW)
    file(GLOB_RECURSE CPACK_RPM_INSTALL_FILES LIST_DIRECTORIES true RELATIVE "${WDIR}" "${WDIR}/*")
  cmake_policy(POP)
  set(CPACK_RPM_INSTALL_FILES "/${CPACK_RPM_INSTALL_FILES}")
  string(REPLACE ";" ";/" CPACK_RPM_INSTALL_FILES "${CPACK_RPM_INSTALL_FILES}")

  # if we are creating a relocatable package, omit parent directories of
  # CPACK_RPM_PACKAGE_PREFIX. This is achieved by building a "filter list"
  # which is passed to the find command that generates the content-list
  if(CPACK_RPM_PACKAGE_RELOCATABLE)
    # get a list of the elements in CPACK_RPM_PACKAGE_PREFIXES that are
    # destinct parent paths of other relocation paths and remove the
    # final element (so the install-prefix dir itself is not omitted
    # from the RPM's content-list)
    list(SORT RPM_USED_PACKAGE_PREFIXES)
    set(_DISTINCT_PATH "NOT_SET")
    foreach(_RPM_RELOCATION_PREFIX ${RPM_USED_PACKAGE_PREFIXES})
      if(NOT "${_RPM_RELOCATION_PREFIX}" MATCHES "${_DISTINCT_PATH}/.*")
        set(_DISTINCT_PATH "${_RPM_RELOCATION_PREFIX}")

        string(REPLACE "/" ";" _CPACK_RPM_PACKAGE_PREFIX_ELEMS " ${_RPM_RELOCATION_PREFIX}")
        list(REMOVE_AT _CPACK_RPM_PACKAGE_PREFIX_ELEMS -1)
        unset(_TMP_LIST)
        # Now generate all of the parent dirs of the relocation path
        foreach(_PREFIX_PATH_ELEM ${_CPACK_RPM_PACKAGE_PREFIX_ELEMS})
          list(APPEND _TMP_LIST "${_PREFIX_PATH_ELEM}")
          string(REPLACE ";" "/" _OMIT_DIR "${_TMP_LIST}")
          separate_arguments(_OMIT_DIR)
          list(APPEND _RPM_DIRS_TO_OMIT ${_OMIT_DIR})
        endforeach()
      endif()
    endforeach()
  endif()

  if(CPACK_RPM_PACKAGE_DEBUG)
    message("CPackRPM:Debug: Initial list of path to OMIT in RPM: ${_RPM_DIRS_TO_OMIT}")
  endif()

  if(NOT DEFINED CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST)
    set(CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST /etc /etc/init.d /usr /usr/share /usr/share/doc /usr/bin /usr/lib /usr/lib64 /usr/include)
    if(CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST_ADDITION)
      message("CPackRPM:Debug: Adding ${CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST_ADDITION} to builtin omit list.")
      list(APPEND CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST "${CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST_ADDITION}")
    endif()
  endif()

  if(CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST)
    if(CPACK_RPM_PACKAGE_DEBUG)
      message("CPackRPM:Debug: CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST= ${CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST}")
    endif()
    list(APPEND _RPM_DIRS_TO_OMIT ${CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST})
  endif()

  if(CPACK_RPM_PACKAGE_DEBUG)
    message("CPackRPM:Debug: Final list of path to OMIT in RPM: ${_RPM_DIRS_TO_OMIT}")
  endif()

  list(REMOVE_ITEM CPACK_RPM_INSTALL_FILES ${_RPM_DIRS_TO_OMIT})

  # add man paths that will be compressed
  # (copied from /usr/lib/rpm/brp-compress - script that does the actual
  # compressing)
  list(APPEND MAN_LOCATIONS "/usr/man/man.*" "/usr/man/.*/man.*" "/usr/info.*"
    "/usr/share/man/man.*" "/usr/share/man/.*/man.*" "/usr/share/info.*"
    "/usr/kerberos/man.*" "/usr/X11R6/man/man.*" "/usr/lib/perl5/man/man.*"
    "/usr/share/doc/.*/man/man.*" "/usr/lib/.*/man/man.*")

  if(CPACK_RPM_ADDITIONAL_MAN_DIRS)
    if(CPACK_RPM_PACKAGE_DEBUG)
      message("CPackRPM:Debug: CPACK_RPM_ADDITIONAL_MAN_DIRS= ${CPACK_RPM_ADDITIONAL_MAN_DIRS}")
    endif()
    list(APPEND MAN_LOCATIONS ${CPACK_RPM_ADDITIONAL_MAN_DIRS})
  endif()

  foreach(PACK_LOCATION IN LISTS CPACK_RPM_INSTALL_FILES)
    foreach(MAN_LOCATION IN LISTS MAN_LOCATIONS)
      # man pages are files inside a certain location
      if(PACK_LOCATION MATCHES "${MAN_LOCATION}/"
        AND NOT IS_DIRECTORY "${WDIR}${PACK_LOCATION}"
        AND NOT IS_SYMLINK "${WDIR}${PACK_LOCATION}")
        list(FIND CPACK_RPM_INSTALL_FILES "${PACK_LOCATION}" INDEX)
        # insert file location that covers compressed man pages
        # even if using a wildcard causes duplicates as those are
        # handled by RPM and we still keep the same file list
        # in spec file - wildcard only represents file type (e.g. .gz)
        list(INSERT CPACK_RPM_INSTALL_FILES ${INDEX} "${PACK_LOCATION}*")
        # remove file location that doesn't cover compressed man pages
        math(EXPR INDEX ${INDEX}+1)
        list(REMOVE_AT CPACK_RPM_INSTALL_FILES ${INDEX})

        break()
      endif()
    endforeach()
  endforeach()

  set(CPACK_RPM_INSTALL_FILES "${CPACK_RPM_INSTALL_FILES}" PARENT_SCOPE)
endfunction()

function(cpack_rpm_symlink_get_relocation_prefixes LOCATION PACKAGE_PREFIXES RETURN_VARIABLE)
  foreach(PKG_PREFIX IN LISTS PACKAGE_PREFIXES)
    string(REGEX MATCH "^${PKG_PREFIX}/.*" FOUND_ "${LOCATION}")
    if(FOUND_)
      list(APPEND TMP_PREFIXES "${PKG_PREFIX}")
    endif()
  endforeach()

  set(${RETURN_VARIABLE} "${TMP_PREFIXES}" PARENT_SCOPE)
endfunction()

function(cpack_rpm_symlink_create_relocation_script PACKAGE_PREFIXES)
  list(LENGTH PACKAGE_PREFIXES LAST_INDEX)
  set(SORTED_PACKAGE_PREFIXES "${PACKAGE_PREFIXES}")
  list(SORT SORTED_PACKAGE_PREFIXES)
  list(REVERSE SORTED_PACKAGE_PREFIXES)
  math(EXPR LAST_INDEX ${LAST_INDEX}-1)

  foreach(SYMLINK_INDEX RANGE ${LAST_INDEX})
    list(GET SORTED_PACKAGE_PREFIXES ${SYMLINK_INDEX} SRC_PATH)
    list(FIND PACKAGE_PREFIXES "${SRC_PATH}" SYMLINK_INDEX) # reverse magic
    string(LENGTH "${SRC_PATH}" SRC_PATH_LEN)

    set(PARTS_CNT 0)
    set(SCRIPT_PART "if [ \"$RPM_INSTALL_PREFIX${SYMLINK_INDEX}\" != \"${SRC_PATH}\" ]; then\n")

    # both paths relocated
    foreach(POINT_INDEX RANGE ${LAST_INDEX})
      list(GET SORTED_PACKAGE_PREFIXES ${POINT_INDEX} POINT_PATH)
      list(FIND PACKAGE_PREFIXES "${POINT_PATH}" POINT_INDEX) # reverse magic
      string(LENGTH "${POINT_PATH}" POINT_PATH_LEN)

      if(_RPM_RELOCATION_SCRIPT_${SYMLINK_INDEX}_${POINT_INDEX})
        if("${SYMLINK_INDEX}" EQUAL "${POINT_INDEX}")
          set(INDENT "")
        else()
          set(SCRIPT_PART "${SCRIPT_PART}  if [ \"$RPM_INSTALL_PREFIX${POINT_INDEX}\" != \"${POINT_PATH}\" ]; then\n")
          set(INDENT "  ")
        endif()

        foreach(RELOCATION_NO IN LISTS _RPM_RELOCATION_SCRIPT_${SYMLINK_INDEX}_${POINT_INDEX})
          math(EXPR PARTS_CNT ${PARTS_CNT}+1)

          math(EXPR RELOCATION_INDEX ${RELOCATION_NO}-1)
          list(GET _RPM_RELOCATION_SCRIPT_PAIRS ${RELOCATION_INDEX} RELOCATION_SCRIPT_PAIR)
          string(FIND "${RELOCATION_SCRIPT_PAIR}" ":" SPLIT_INDEX)

          math(EXPR SRC_PATH_END ${SPLIT_INDEX}-${SRC_PATH_LEN})
          string(SUBSTRING ${RELOCATION_SCRIPT_PAIR} ${SRC_PATH_LEN} ${SRC_PATH_END} SYMLINK_)

          math(EXPR POINT_PATH_START ${SPLIT_INDEX}+1+${POINT_PATH_LEN})
          string(SUBSTRING ${RELOCATION_SCRIPT_PAIR} ${POINT_PATH_START} -1 POINT_)

          set(SCRIPT_PART "${SCRIPT_PART}  ${INDENT}if [ -z \"$CPACK_RPM_RELOCATED_SYMLINK_${RELOCATION_INDEX}\" ]; then\n")
          set(SCRIPT_PART "${SCRIPT_PART}    ${INDENT}ln -s \"$RPM_INSTALL_PREFIX${POINT_INDEX}${POINT_}\" \"$RPM_INSTALL_PREFIX${SYMLINK_INDEX}${SYMLINK_}\"\n")
          set(SCRIPT_PART "${SCRIPT_PART}    ${INDENT}CPACK_RPM_RELOCATED_SYMLINK_${RELOCATION_INDEX}=true\n")
          set(SCRIPT_PART "${SCRIPT_PART}  ${INDENT}fi\n")
        endforeach()

        if(NOT "${SYMLINK_INDEX}" EQUAL "${POINT_INDEX}")
          set(SCRIPT_PART "${SCRIPT_PART}  fi\n")
        endif()
      endif()
    endforeach()

    # source path relocated
    if(_RPM_RELOCATION_SCRIPT_${SYMLINK_INDEX}_X)
      foreach(RELOCATION_NO IN LISTS _RPM_RELOCATION_SCRIPT_${SYMLINK_INDEX}_X)
        math(EXPR PARTS_CNT ${PARTS_CNT}+1)

        math(EXPR RELOCATION_INDEX ${RELOCATION_NO}-1)
        list(GET _RPM_RELOCATION_SCRIPT_PAIRS ${RELOCATION_INDEX} RELOCATION_SCRIPT_PAIR)
        string(FIND "${RELOCATION_SCRIPT_PAIR}" ":" SPLIT_INDEX)

        math(EXPR SRC_PATH_END ${SPLIT_INDEX}-${SRC_PATH_LEN})
        string(SUBSTRING ${RELOCATION_SCRIPT_PAIR} ${SRC_PATH_LEN} ${SRC_PATH_END} SYMLINK_)

        math(EXPR POINT_PATH_START ${SPLIT_INDEX}+1)
        string(SUBSTRING ${RELOCATION_SCRIPT_PAIR} ${POINT_PATH_START} -1 POINT_)

        set(SCRIPT_PART "${SCRIPT_PART}  if [ -z \"$CPACK_RPM_RELOCATED_SYMLINK_${RELOCATION_INDEX}\" ]; then\n")
        set(SCRIPT_PART "${SCRIPT_PART}    ln -s \"${POINT_}\" \"$RPM_INSTALL_PREFIX${SYMLINK_INDEX}${SYMLINK_}\"\n")
        set(SCRIPT_PART "${SCRIPT_PART}    CPACK_RPM_RELOCATED_SYMLINK_${RELOCATION_INDEX}=true\n")
        set(SCRIPT_PART "${SCRIPT_PART}  fi\n")
      endforeach()
    endif()

    if(PARTS_CNT)
      set(SCRIPT "${SCRIPT_PART}")
      set(SCRIPT "${SCRIPT}fi\n")
    endif()
  endforeach()

  # point path relocated
  foreach(POINT_INDEX RANGE ${LAST_INDEX})
    list(GET SORTED_PACKAGE_PREFIXES ${POINT_INDEX} POINT_PATH)
    list(FIND PACKAGE_PREFIXES "${POINT_PATH}" POINT_INDEX) # reverse magic
    string(LENGTH "${POINT_PATH}" POINT_PATH_LEN)

    if(_RPM_RELOCATION_SCRIPT_X_${POINT_INDEX})
      set(SCRIPT "${SCRIPT}if [ \"$RPM_INSTALL_PREFIX${POINT_INDEX}\" != \"${POINT_PATH}\" ]; then\n")

      foreach(RELOCATION_NO IN LISTS _RPM_RELOCATION_SCRIPT_X_${POINT_INDEX})
        math(EXPR RELOCATION_INDEX ${RELOCATION_NO}-1)
        list(GET _RPM_RELOCATION_SCRIPT_PAIRS ${RELOCATION_INDEX} RELOCATION_SCRIPT_PAIR)
        string(FIND "${RELOCATION_SCRIPT_PAIR}" ":" SPLIT_INDEX)

        string(SUBSTRING ${RELOCATION_SCRIPT_PAIR} 0 ${SPLIT_INDEX} SYMLINK_)

        math(EXPR POINT_PATH_START ${SPLIT_INDEX}+1+${POINT_PATH_LEN})
        string(SUBSTRING ${RELOCATION_SCRIPT_PAIR} ${POINT_PATH_START} -1 POINT_)

        set(SCRIPT "${SCRIPT}  if [ -z \"$CPACK_RPM_RELOCATED_SYMLINK_${RELOCATION_INDEX}\" ]; then\n")
        set(SCRIPT "${SCRIPT}    ln -s \"$RPM_INSTALL_PREFIX${POINT_INDEX}${POINT_}\" \"${SYMLINK_}\"\n")
        set(SCRIPT "${SCRIPT}    CPACK_RPM_RELOCATED_SYMLINK_${RELOCATION_INDEX}=true\n")
        set(SCRIPT "${SCRIPT}  fi\n")
      endforeach()

      set(SCRIPT "${SCRIPT}fi\n")
    endif()
  endforeach()

  # no path relocated
  if(_RPM_RELOCATION_SCRIPT_X_X)
    foreach(RELOCATION_NO IN LISTS _RPM_RELOCATION_SCRIPT_X_X)
      math(EXPR RELOCATION_INDEX ${RELOCATION_NO}-1)
      list(GET _RPM_RELOCATION_SCRIPT_PAIRS ${RELOCATION_INDEX} RELOCATION_SCRIPT_PAIR)
      string(FIND "${RELOCATION_SCRIPT_PAIR}" ":" SPLIT_INDEX)

      string(SUBSTRING ${RELOCATION_SCRIPT_PAIR} 0 ${SPLIT_INDEX} SYMLINK_)

      math(EXPR POINT_PATH_START ${SPLIT_INDEX}+1)
      string(SUBSTRING ${RELOCATION_SCRIPT_PAIR} ${POINT_PATH_START} -1 POINT_)

      set(SCRIPT "${SCRIPT}if [ -z \"$CPACK_RPM_RELOCATED_SYMLINK_${RELOCATION_INDEX}\" ]; then\n")
      set(SCRIPT "${SCRIPT}  ln -s \"${POINT_}\" \"${SYMLINK_}\"\n")
      set(SCRIPT "${SCRIPT}fi\n")
    endforeach()
  endif()

  set(RPM_SYMLINK_POSTINSTALL "${SCRIPT}" PARENT_SCOPE)
endfunction()

function(cpack_rpm_symlink_add_for_relocation_script PACKAGE_PREFIXES SYMLINK SYMLINK_RELOCATION_PATHS POINT POINT_RELOCATION_PATHS)
  list(LENGTH SYMLINK_RELOCATION_PATHS SYMLINK_PATHS_COUTN)
  list(LENGTH POINT_RELOCATION_PATHS POINT_PATHS_COUNT)

  list(APPEND _RPM_RELOCATION_SCRIPT_PAIRS "${SYMLINK}:${POINT}")
  list(LENGTH _RPM_RELOCATION_SCRIPT_PAIRS PAIR_NO)

  if(SYMLINK_PATHS_COUTN)
    foreach(SYMLINK_RELOC_PATH IN LISTS SYMLINK_RELOCATION_PATHS)
      list(FIND PACKAGE_PREFIXES "${SYMLINK_RELOC_PATH}" SYMLINK_INDEX)

      # source path relocated
      list(APPEND _RPM_RELOCATION_SCRIPT_${SYMLINK_INDEX}_X "${PAIR_NO}")
      list(APPEND RELOCATION_VARS "_RPM_RELOCATION_SCRIPT_${SYMLINK_INDEX}_X")

      foreach(POINT_RELOC_PATH IN LISTS POINT_RELOCATION_PATHS)
        list(FIND PACKAGE_PREFIXES "${POINT_RELOC_PATH}" POINT_INDEX)

        # both paths relocated
        list(APPEND _RPM_RELOCATION_SCRIPT_${SYMLINK_INDEX}_${POINT_INDEX} "${PAIR_NO}")
        list(APPEND RELOCATION_VARS "_RPM_RELOCATION_SCRIPT_${SYMLINK_INDEX}_${POINT_INDEX}")

        # point path relocated
        list(APPEND _RPM_RELOCATION_SCRIPT_X_${POINT_INDEX} "${PAIR_NO}")
        list(APPEND RELOCATION_VARS "_RPM_RELOCATION_SCRIPT_X_${POINT_INDEX}")
      endforeach()
    endforeach()
  elseif(POINT_PATHS_COUNT)
    foreach(POINT_RELOC_PATH IN LISTS POINT_RELOCATION_PATHS)
      list(FIND PACKAGE_PREFIXES "${POINT_RELOC_PATH}" POINT_INDEX)

      # point path relocated
      list(APPEND _RPM_RELOCATION_SCRIPT_X_${POINT_INDEX} "${PAIR_NO}")
      list(APPEND RELOCATION_VARS "_RPM_RELOCATION_SCRIPT_X_${POINT_INDEX}")
    endforeach()
  endif()

  # no path relocated
  list(APPEND _RPM_RELOCATION_SCRIPT_X_X "${PAIR_NO}")
  list(APPEND RELOCATION_VARS "_RPM_RELOCATION_SCRIPT_X_X")

  # place variables into parent scope
  foreach(VAR IN LISTS RELOCATION_VARS)
    set(${VAR} "${${VAR}}" PARENT_SCOPE)
  endforeach()
  set(_RPM_RELOCATION_SCRIPT_PAIRS "${_RPM_RELOCATION_SCRIPT_PAIRS}" PARENT_SCOPE)
  set(REQUIRES_SYMLINK_RELOCATION_SCRIPT "true" PARENT_SCOPE)
  set(DIRECTIVE "%ghost " PARENT_SCOPE)
endfunction()

function(cpack_rpm_prepare_install_files INSTALL_FILES_LIST WDIR PACKAGE_PREFIXES IS_RELOCATABLE)
  # Prepend directories in ${CPACK_RPM_INSTALL_FILES} with %dir
  # This is necessary to avoid duplicate files since rpmbuild does
  # recursion on its own when encountering a pathname which is a directory
  # which is not flagged as %dir
  string(STRIP "${INSTALL_FILES_LIST}" INSTALL_FILES_LIST)
  string(REPLACE "\n" ";" INSTALL_FILES_LIST
                          "${INSTALL_FILES_LIST}")
  string(REPLACE "\"" "" INSTALL_FILES_LIST
                          "${INSTALL_FILES_LIST}")
  string(LENGTH "${WDIR}" WDR_LEN_)

  list(SORT INSTALL_FILES_LIST) # make file order consistent on all platforms

  foreach(F IN LISTS INSTALL_FILES_LIST)
    unset(DIRECTIVE)

    if(IS_SYMLINK "${WDIR}/${F}")
      if(IS_RELOCATABLE)
        # check that symlink has relocatable format
        get_filename_component(SYMLINK_LOCATION_ "${WDIR}/${F}" DIRECTORY)
        execute_process(COMMAND ls -la "${WDIR}/${F}"
                  WORKING_DIRECTORY "${WDIR}"
                  OUTPUT_VARIABLE SYMLINK_POINT_
                  OUTPUT_STRIP_TRAILING_WHITESPACE)

        string(FIND "${SYMLINK_POINT_}" "->" SYMLINK_POINT_INDEX_ REVERSE)
        math(EXPR SYMLINK_POINT_INDEX_ ${SYMLINK_POINT_INDEX_}+3)
        string(LENGTH "${SYMLINK_POINT_}" SYMLINK_POINT_LENGTH_)

        # get destination path
        string(SUBSTRING "${SYMLINK_POINT_}" ${SYMLINK_POINT_INDEX_} ${SYMLINK_POINT_LENGTH_} SYMLINK_POINT_)

        # check if path is relative or absolute
        string(SUBSTRING "${SYMLINK_POINT_}" 0 1 SYMLINK_IS_ABSOLUTE_)

        if(${SYMLINK_IS_ABSOLUTE_} STREQUAL "/")
          # prevent absolute paths from having /../ or /./ section inside of them
          get_filename_component(SYMLINK_POINT_ "${SYMLINK_POINT_}" ABSOLUTE)
        else()
          # handle relative path
          get_filename_component(SYMLINK_POINT_ "${SYMLINK_LOCATION_}/${SYMLINK_POINT_}" ABSOLUTE)
        endif()

        # recalculate path length after conversion to canonical form
        string(LENGTH "${SYMLINK_POINT_}" SYMLINK_POINT_LENGTH_)

        if(SYMLINK_POINT_ MATCHES "${WDIR}/.*")
          # only symlinks that are pointing inside the packaging structure should be checked for relocation
          string(SUBSTRING "${SYMLINK_POINT_}" ${WDR_LEN_} -1 SYMLINK_POINT_WD_)
          cpack_rpm_symlink_get_relocation_prefixes("${F}" "${PACKAGE_PREFIXES}" "SYMLINK_RELOCATIONS")
          cpack_rpm_symlink_get_relocation_prefixes("${SYMLINK_POINT_WD_}" "${PACKAGE_PREFIXES}" "POINT_RELOCATIONS")

          list(LENGTH SYMLINK_RELOCATIONS SYMLINK_RELOCATIONS_COUNT)
          list(LENGTH POINT_RELOCATIONS POINT_RELOCATIONS_COUNT)
        else()
          # location pointed to is ouside WDR so it should be treated as a permanent symlink
          set(SYMLINK_POINT_WD_ "${SYMLINK_POINT_}")

          unset(SYMLINK_RELOCATIONS)
          unset(POINT_RELOCATIONS)
          unset(SYMLINK_RELOCATIONS_COUNT)
          unset(POINT_RELOCATIONS_COUNT)
        endif()

        if(SYMLINK_RELOCATIONS_COUNT AND POINT_RELOCATIONS_COUNT)
          # find matching
          foreach(SYMLINK_RELOCATION_PREFIX IN LISTS SYMLINK_RELOCATIONS)
            list(FIND POINT_RELOCATIONS "${SYMLINK_RELOCATION_PREFIX}" FOUND_INDEX)
            if(NOT ${FOUND_INDEX} EQUAL -1)
              break()
            endif()
          endforeach()

          if(NOT ${FOUND_INDEX} EQUAL -1)
            # symlinks have the same subpath
            if(${SYMLINK_RELOCATIONS_COUNT} EQUAL 1 AND ${POINT_RELOCATIONS_COUNT} EQUAL 1)
              # permanent symlink
              get_filename_component(SYMLINK_LOCATION_ "${F}" DIRECTORY)
              file(RELATIVE_PATH FINAL_PATH_ ${SYMLINK_LOCATION_} ${SYMLINK_POINT_WD_})
              execute_process(COMMAND "${CMAKE_COMMAND}" -E create_symlink "${FINAL_PATH_}" "${WDIR}/${F}")
            else()
              # relocation subpaths
              cpack_rpm_symlink_add_for_relocation_script("${PACKAGE_PREFIXES}" "${F}" "${SYMLINK_RELOCATIONS}"
                  "${SYMLINK_POINT_WD_}" "${POINT_RELOCATIONS}")
            endif()
          else()
            # not on the same relocation path
            cpack_rpm_symlink_add_for_relocation_script("${PACKAGE_PREFIXES}" "${F}" "${SYMLINK_RELOCATIONS}"
                "${SYMLINK_POINT_WD_}" "${POINT_RELOCATIONS}")
          endif()
        elseif(POINT_RELOCATIONS_COUNT)
          # point is relocatable
          cpack_rpm_symlink_add_for_relocation_script("${PACKAGE_PREFIXES}" "${F}" "${SYMLINK_RELOCATIONS}"
              "${SYMLINK_POINT_WD_}" "${POINT_RELOCATIONS}")
        else()
          # is not relocatable or points to non relocatable path - permanent symlink
          execute_process(COMMAND "${CMAKE_COMMAND}" -E create_symlink "${SYMLINK_POINT_WD_}" "${WDIR}/${F}")
        endif()
      endif()
    elseif(IS_DIRECTORY "${WDIR}/${F}")
      set(DIRECTIVE "%dir ")
    endif()

    set(INSTALL_FILES "${INSTALL_FILES}${DIRECTIVE}\"${F}\"\n")
  endforeach()

  if(REQUIRES_SYMLINK_RELOCATION_SCRIPT)
    cpack_rpm_symlink_create_relocation_script("${PACKAGE_PREFIXES}")
  endif()

  set(RPM_SYMLINK_POSTINSTALL "${RPM_SYMLINK_POSTINSTALL}" PARENT_SCOPE)
  set(CPACK_RPM_INSTALL_FILES "${INSTALL_FILES}" PARENT_SCOPE)
endfunction()

if(CMAKE_BINARY_DIR)
  message(FATAL_ERROR "CPackRPM.cmake may only be used by CPack internally.")
endif()

if(NOT UNIX)
  message(FATAL_ERROR "CPackRPM.cmake may only be used under UNIX.")
endif()

function(cpack_rpm_variable_fallback OUTPUT_VAR_NAME)
  set(FALLBACK_VAR_NAMES ${ARGN})

  foreach(variable_name IN LISTS FALLBACK_VAR_NAMES)
    if(${variable_name})
      set(${OUTPUT_VAR_NAME} "${${variable_name}}" PARENT_SCOPE)
      break()
    endif()
  endforeach()
endfunction()

function(cpack_rpm_generate_package)
  # rpmbuild is the basic command for building RPM package
  # it may be a simple (symbolic) link to rpm command.
  find_program(RPMBUILD_EXECUTABLE rpmbuild)

  # Check version of the rpmbuild tool this would be easier to
  # track bugs with users and CPackRPM debug mode.
  # We may use RPM version in order to check for available version dependent features
  if(RPMBUILD_EXECUTABLE)
    execute_process(COMMAND ${RPMBUILD_EXECUTABLE} --version
                    OUTPUT_VARIABLE _TMP_VERSION
                    ERROR_QUIET
                    OUTPUT_STRIP_TRAILING_WHITESPACE)
    string(REGEX REPLACE "^.* " ""
           RPMBUILD_EXECUTABLE_VERSION
           ${_TMP_VERSION})
    if(CPACK_RPM_PACKAGE_DEBUG)
      message("CPackRPM:Debug: rpmbuild version is <${RPMBUILD_EXECUTABLE_VERSION}>")
    endif()
  endif()

  if(NOT RPMBUILD_EXECUTABLE)
    message(FATAL_ERROR "RPM package requires rpmbuild executable")
  endif()

  # Display lsb_release output if DEBUG mode enable
  # This will help to diagnose problem with CPackRPM
  # because we will know on which kind of Linux we are
  if(CPACK_RPM_PACKAGE_DEBUG)
    find_program(LSB_RELEASE_EXECUTABLE lsb_release)
    if(LSB_RELEASE_EXECUTABLE)
      execute_process(COMMAND ${LSB_RELEASE_EXECUTABLE} -a
                      OUTPUT_VARIABLE _TMP_LSB_RELEASE_OUTPUT
                      ERROR_QUIET
                      OUTPUT_STRIP_TRAILING_WHITESPACE)
      string(REGEX REPLACE "\n" ", "
             LSB_RELEASE_OUTPUT
             ${_TMP_LSB_RELEASE_OUTPUT})
    else ()
      set(LSB_RELEASE_OUTPUT "lsb_release not installed/found!")
    endif()
    message("CPackRPM:Debug: LSB_RELEASE  = ${LSB_RELEASE_OUTPUT}")
  endif()

  # We may use RPM version in the future in order
  # to shut down warning about space in buildtree
  # some recent RPM version should support space in different places.
  # not checked [yet].
  if(CPACK_TOPLEVEL_DIRECTORY MATCHES ".* .*")
    message(FATAL_ERROR "${RPMBUILD_EXECUTABLE} can't handle paths with spaces, use a build directory without spaces for building RPMs.")
  endif()

  # If rpmbuild is found
  # we try to discover alien since we may be on non RPM distro like Debian.
  # In this case we may try to to use more advanced features
  # like generating RPM directly from DEB using alien.
  # FIXME feature not finished (yet)
  find_program(ALIEN_EXECUTABLE alien)
  if(ALIEN_EXECUTABLE)
    message(STATUS "alien found, we may be on a Debian based distro.")
  endif()

  # Are we packaging components ?
  if(CPACK_RPM_PACKAGE_COMPONENT)
    string(TOUPPER ${CPACK_RPM_PACKAGE_COMPONENT} CPACK_RPM_PACKAGE_COMPONENT_UPPER)
  endif()

  set(WDIR "${CPACK_TOPLEVEL_DIRECTORY}/${CPACK_PACKAGE_FILE_NAME}${CPACK_RPM_PACKAGE_COMPONENT_PART_PATH}")

  #
  # Use user-defined RPM specific variables value
  # or generate reasonable default value from
  # CPACK_xxx generic values.
  # The variables comes from the needed (mandatory or not)
  # values found in the RPM specification file aka ".spec" file.
  # The variables which may/should be defined are:
  #

  # CPACK_RPM_PACKAGE_SUMMARY (mandatory)

  if(CPACK_RPM_PACKAGE_COMPONENT)
    cpack_rpm_variable_fallback("CPACK_RPM_PACKAGE_SUMMARY"
      "CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_SUMMARY"
      "CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT_UPPER}_PACKAGE_SUMMARY")
  endif()

  if(NOT CPACK_RPM_PACKAGE_SUMMARY)
    if(CPACK_PACKAGE_DESCRIPTION_SUMMARY)
      set(CPACK_RPM_PACKAGE_SUMMARY ${CPACK_PACKAGE_DESCRIPTION_SUMMARY})
    else()
      # if neither var is defined lets use the name as summary
      string(TOLOWER "${CPACK_PACKAGE_NAME}" CPACK_RPM_PACKAGE_SUMMARY)
    endif()
  endif()

  # CPACK_RPM_PACKAGE_NAME (mandatory)
  if(NOT CPACK_RPM_PACKAGE_NAME)
    string(TOLOWER "${CPACK_PACKAGE_NAME}" CPACK_RPM_PACKAGE_NAME)
  endif()

  if(CPACK_RPM_PACKAGE_COMPONENT)
    set(CPACK_RPM_PACKAGE_NAME "${CPACK_RPM_PACKAGE_NAME}-${CPACK_RPM_PACKAGE_COMPONENT}")
    cpack_rpm_variable_fallback("CPACK_RPM_PACKAGE_NAME"
      "CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_NAME"
      "CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT_UPPER}_PACKAGE_NAME")
  endif()

  # CPACK_RPM_PACKAGE_VERSION (mandatory)
  if(NOT CPACK_RPM_PACKAGE_VERSION)
    if(NOT CPACK_PACKAGE_VERSION)
      message(FATAL_ERROR "RPM package requires a package version")
    endif()
    set(CPACK_RPM_PACKAGE_VERSION ${CPACK_PACKAGE_VERSION})
  endif()
  # Replace '-' in version with '_'
  # '-' character is  an Illegal RPM version character
  # it is illegal because it is used to separate
  # RPM "Version" from RPM "Release"
  string(REPLACE "-" "_" CPACK_RPM_PACKAGE_VERSION ${CPACK_RPM_PACKAGE_VERSION})

  # CPACK_RPM_PACKAGE_ARCHITECTURE (mandatory)
  if(NOT CPACK_RPM_PACKAGE_ARCHITECTURE)
    execute_process(COMMAND uname "-m"
                    OUTPUT_VARIABLE CPACK_RPM_PACKAGE_ARCHITECTURE
                    OUTPUT_STRIP_TRAILING_WHITESPACE)
  else()
    if(CPACK_RPM_PACKAGE_DEBUG)
      message("CPackRPM:Debug: using user-specified build arch = ${CPACK_RPM_PACKAGE_ARCHITECTURE}")
    endif()
  endif()

  if(CPACK_RPM_PACKAGE_COMPONENT)
    cpack_rpm_variable_fallback("CPACK_RPM_PACKAGE_ARCHITECTURE"
      "CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_ARCHITECTURE"
      "CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT_UPPER}_PACKAGE_ARCHITECTURE")

    if(CPACK_RPM_PACKAGE_DEBUG)
      message("CPackRPM:Debug: using component build arch = ${CPACK_RPM_PACKAGE_ARCHITECTURE}")
    endif()
  endif()

  if(${CPACK_RPM_PACKAGE_ARCHITECTURE} STREQUAL "noarch")
    set(TMP_RPM_BUILDARCH "Buildarch: ${CPACK_RPM_PACKAGE_ARCHITECTURE}")
  else()
    set(TMP_RPM_BUILDARCH "")
  endif()

  # CPACK_RPM_PACKAGE_RELEASE
  # The RPM release is the numbering of the RPM package ITSELF
  # this is the version of the PACKAGING and NOT the version
  # of the CONTENT of the package.
  # You may well need to generate a new RPM package release
  # without changing the version of the packaged software.
  # This is the case when the packaging is buggy (not) the software :=)
  # If not set, 1 is a good candidate
  if(NOT CPACK_RPM_PACKAGE_RELEASE)
    set(CPACK_RPM_PACKAGE_RELEASE 1)
  endif()

  # CPACK_RPM_PACKAGE_LICENSE
  if(NOT CPACK_RPM_PACKAGE_LICENSE)
    set(CPACK_RPM_PACKAGE_LICENSE "unknown")
  endif()

  # CPACK_RPM_PACKAGE_GROUP
  if(CPACK_RPM_PACKAGE_COMPONENT)
    cpack_rpm_variable_fallback("CPACK_RPM_PACKAGE_GROUP"
      "CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_GROUP"
      "CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT_UPPER}_PACKAGE_GROUP")
  endif()

  if(NOT CPACK_RPM_PACKAGE_GROUP)
    set(CPACK_RPM_PACKAGE_GROUP "unknown")
  endif()

  # CPACK_RPM_PACKAGE_VENDOR
  if(NOT CPACK_RPM_PACKAGE_VENDOR)
    if(CPACK_PACKAGE_VENDOR)
      set(CPACK_RPM_PACKAGE_VENDOR "${CPACK_PACKAGE_VENDOR}")
    else()
      set(CPACK_RPM_PACKAGE_VENDOR "unknown")
    endif()
  endif()

  # CPACK_RPM_PACKAGE_SOURCE
  # The name of the source tarball in case we generate a source RPM

  # CPACK_RPM_PACKAGE_DESCRIPTION
  # The variable content may be either
  #   - explicitly given by the user or
  #   - filled with the content of CPACK_PACKAGE_DESCRIPTION_FILE
  #     if it is defined
  #   - set to a default value
  #

  if(CPACK_RPM_PACKAGE_COMPONENT)
    cpack_rpm_variable_fallback("CPACK_RPM_PACKAGE_DESCRIPTION"
      "CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_DESCRIPTION"
      "CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT_UPPER}_PACKAGE_DESCRIPTION"
      "CPACK_COMPONENT_${CPACK_RPM_PACKAGE_COMPONENT_UPPER}_DESCRIPTION")
  endif()

  if(NOT CPACK_RPM_PACKAGE_DESCRIPTION)
    if(CPACK_PACKAGE_DESCRIPTION_FILE)
      file(READ ${CPACK_PACKAGE_DESCRIPTION_FILE} CPACK_RPM_PACKAGE_DESCRIPTION)
    else ()
      set(CPACK_RPM_PACKAGE_DESCRIPTION "no package description available")
    endif ()
  endif ()

  # CPACK_RPM_COMPRESSION_TYPE
  #
  if (CPACK_RPM_COMPRESSION_TYPE)
     if(CPACK_RPM_PACKAGE_DEBUG)
       message("CPackRPM:Debug: User Specified RPM compression type: ${CPACK_RPM_COMPRESSION_TYPE}")
     endif()
     if(CPACK_RPM_COMPRESSION_TYPE STREQUAL "lzma")
       set(CPACK_RPM_COMPRESSION_TYPE_TMP "%define _binary_payload w9.lzdio")
     endif()
     if(CPACK_RPM_COMPRESSION_TYPE STREQUAL "xz")
       set(CPACK_RPM_COMPRESSION_TYPE_TMP "%define _binary_payload w7.xzdio")
     endif()
     if(CPACK_RPM_COMPRESSION_TYPE STREQUAL "bzip2")
       set(CPACK_RPM_COMPRESSION_TYPE_TMP "%define _binary_payload w9.bzdio")
     endif()
     if(CPACK_RPM_COMPRESSION_TYPE STREQUAL "gzip")
       set(CPACK_RPM_COMPRESSION_TYPE_TMP "%define _binary_payload w9.gzdio")
     endif()
  else()
     set(CPACK_RPM_COMPRESSION_TYPE_TMP "")
  endif()

  if(CPACK_PACKAGE_RELOCATABLE OR CPACK_RPM_PACKAGE_RELOCATABLE)
    if(CPACK_RPM_PACKAGE_DEBUG)
      message("CPackRPM:Debug: Trying to build a relocatable package")
    endif()
    if(CPACK_SET_DESTDIR AND (NOT CPACK_SET_DESTDIR STREQUAL "I_ON"))
      message("CPackRPM:Warning: CPACK_SET_DESTDIR is set (=${CPACK_SET_DESTDIR}) while requesting a relocatable package (CPACK_RPM_PACKAGE_RELOCATABLE is set): this is not supported, the package won't be relocatable.")
      set(CPACK_RPM_PACKAGE_RELOCATABLE FALSE)
    else()
      set(CPACK_RPM_PACKAGE_PREFIX ${CPACK_PACKAGING_INSTALL_PREFIX}) # kept for back compatibility (provided external RPM spec files)
      cpack_rpm_prepare_relocation_paths()
      set(CPACK_RPM_PACKAGE_RELOCATABLE TRUE)
    endif()
  endif()

  # Check if additional fields for RPM spec header are given
  # There may be some COMPONENT specific variables as well
  # If component specific var is not provided we use the global one
  # for each component
  foreach(_RPM_SPEC_HEADER URL REQUIRES SUGGESTS PROVIDES OBSOLETES PREFIX CONFLICTS AUTOPROV AUTOREQ AUTOREQPROV REQUIRES_PRE REQUIRES_POST REQUIRES_PREUN REQUIRES_POSTUN)
    if(CPACK_RPM_PACKAGE_DEBUG)
      message("CPackRPM:Debug: processing ${_RPM_SPEC_HEADER}")
    endif()
    if(CPACK_RPM_PACKAGE_COMPONENT)
      cpack_rpm_variable_fallback("CPACK_RPM_PACKAGE_${_RPM_SPEC_HEADER}"
        "CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_${_RPM_SPEC_HEADER}"
        "CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT_UPPER}_PACKAGE_${_RPM_SPEC_HEADER}")
    endif()

    if(DEFINED CPACK_RPM_PACKAGE_${_RPM_SPEC_HEADER})
      if(CPACK_RPM_PACKAGE_DEBUG)
        message("CPackRPM:Debug: using CPACK_RPM_PACKAGE_${_RPM_SPEC_HEADER}")
      endif()
      set(CPACK_RPM_PACKAGE_${_RPM_SPEC_HEADER}_TMP ${CPACK_RPM_PACKAGE_${_RPM_SPEC_HEADER}})
    endif()

    # Treat the RPM Spec keyword iff it has been properly defined
    if(DEFINED CPACK_RPM_PACKAGE_${_RPM_SPEC_HEADER}_TMP)
      # Transform NAME --> Name e.g. PROVIDES --> Provides
      # The Upper-case first letter and lowercase tail is the
      # appropriate value required in the final RPM spec file.
      string(SUBSTRING ${_RPM_SPEC_HEADER} 1 -1 _PACKAGE_HEADER_TAIL)
      string(TOLOWER "${_PACKAGE_HEADER_TAIL}" _PACKAGE_HEADER_TAIL)
      string(SUBSTRING ${_RPM_SPEC_HEADER} 0 1 _PACKAGE_HEADER_NAME)
      set(_PACKAGE_HEADER_NAME "${_PACKAGE_HEADER_NAME}${_PACKAGE_HEADER_TAIL}")
      # The following keywords require parentheses around the "pre" or "post" suffix in the final RPM spec file.
      set(SCRIPTS_REQUIREMENTS_LIST REQUIRES_PRE REQUIRES_POST REQUIRES_PREUN REQUIRES_POSTUN)
      list(FIND SCRIPTS_REQUIREMENTS_LIST ${_RPM_SPEC_HEADER} IS_SCRIPTS_REQUIREMENT_FOUND)
      if(NOT ${IS_SCRIPTS_REQUIREMENT_FOUND} EQUAL -1)
        string(REPLACE "_" "(" _PACKAGE_HEADER_NAME "${_PACKAGE_HEADER_NAME}")
        set(_PACKAGE_HEADER_NAME "${_PACKAGE_HEADER_NAME})")
      endif()
      if(CPACK_RPM_PACKAGE_DEBUG)
        message("CPackRPM:Debug: User defined ${_PACKAGE_HEADER_NAME}:\n ${CPACK_RPM_PACKAGE_${_RPM_SPEC_HEADER}_TMP}")
      endif()
      set(TMP_RPM_${_RPM_SPEC_HEADER} "${_PACKAGE_HEADER_NAME}: ${CPACK_RPM_PACKAGE_${_RPM_SPEC_HEADER}_TMP}")
      unset(CPACK_RPM_PACKAGE_${_RPM_SPEC_HEADER}_TMP)
    endif()
  endforeach()

  # CPACK_RPM_SPEC_INSTALL_POST
  # May be used to define a RPM post intallation script
  # for example setting it to "/bin/true" may prevent
  # rpmbuild from stripping binaries.
  if(CPACK_RPM_SPEC_INSTALL_POST)
    if(CPACK_RPM_PACKAGE_DEBUG)
      message("CPackRPM:Debug: User defined CPACK_RPM_SPEC_INSTALL_POST = ${CPACK_RPM_SPEC_INSTALL_POST}")
    endif()
    set(TMP_RPM_SPEC_INSTALL_POST "%define __spec_install_post ${CPACK_RPM_SPEC_INSTALL_POST}")
  endif()

  # CPACK_RPM_POST_INSTALL_SCRIPT_FILE (or CPACK_RPM_<COMPONENT>_POST_INSTALL_SCRIPT_FILE)
  # CPACK_RPM_POST_UNINSTALL_SCRIPT_FILE (or CPACK_RPM_<COMPONENT>_POST_UNINSTALL_SCRIPT_FILE)
  # May be used to embed a post (un)installation script in the spec file.
  # The refered script file(s) will be read and directly
  # put after the %post or %postun section
  # ----------------------------------------------------------------
  # CPACK_RPM_PRE_INSTALL_SCRIPT_FILE (or CPACK_RPM_<COMPONENT>_PRE_INSTALL_SCRIPT_FILE)
  # CPACK_RPM_PRE_UNINSTALL_SCRIPT_FILE (or CPACK_RPM_<COMPONENT>_PRE_UNINSTALL_SCRIPT_FILE)
  # May be used to embed a pre (un)installation script in the spec file.
  # The refered script file(s) will be read and directly
  # put after the %pre or %preun section
  foreach(RPM_SCRIPT_FILE_TYPE_ "INSTALL" "UNINSTALL")
    foreach(RPM_SCRIPT_FILE_TIME_ "PRE" "POST")
      set("CPACK_RPM_${RPM_SCRIPT_FILE_TIME_}_${RPM_SCRIPT_FILE_TYPE_}_READ_FILE"
        "${CPACK_RPM_${RPM_SCRIPT_FILE_TIME_}_${RPM_SCRIPT_FILE_TYPE_}_SCRIPT_FILE}")

      if(CPACK_RPM_PACKAGE_COMPONENT)
        cpack_rpm_variable_fallback("CPACK_RPM_${RPM_SCRIPT_FILE_TIME_}_${RPM_SCRIPT_FILE_TYPE_}_READ_FILE"
          "CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_${RPM_SCRIPT_FILE_TIME_}_${RPM_SCRIPT_FILE_TYPE_}_SCRIPT_FILE"
          "CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT_UPPER}_${RPM_SCRIPT_FILE_TIME_}_${RPM_SCRIPT_FILE_TYPE_}_SCRIPT_FILE")
      endif()

      # Handle file if it has been specified
      if(CPACK_RPM_${RPM_SCRIPT_FILE_TIME_}_${RPM_SCRIPT_FILE_TYPE_}_READ_FILE)
        if(EXISTS ${CPACK_RPM_${RPM_SCRIPT_FILE_TIME_}_${RPM_SCRIPT_FILE_TYPE_}_READ_FILE})
          file(READ ${CPACK_RPM_${RPM_SCRIPT_FILE_TIME_}_${RPM_SCRIPT_FILE_TYPE_}_READ_FILE}
            "CPACK_RPM_SPEC_${RPM_SCRIPT_FILE_TIME_}${RPM_SCRIPT_FILE_TYPE_}")
        else()
          message("CPackRPM:Warning: CPACK_RPM_${RPM_SCRIPT_FILE_TIME_}_${RPM_SCRIPT_FILE_TYPE_}_SCRIPT_FILE <${CPACK_RPM_${RPM_SCRIPT_FILE_TIME_}_${RPM_SCRIPT_FILE_TYPE_}_READ_FILE}> does not exists - ignoring")
        endif()
      else()
        # reset SPEC var value if no file has been specified
        # (either globally or component-wise)
        set("CPACK_RPM_SPEC_${RPM_SCRIPT_FILE_TIME_}${RPM_SCRIPT_FILE_TYPE_}" "")
      endif()
    endforeach()
  endforeach()

  # CPACK_RPM_CHANGELOG_FILE
  # May be used to embed a changelog in the spec file.
  # The refered file will be read and directly put after the %changelog section
  if(CPACK_RPM_CHANGELOG_FILE)
    if(EXISTS ${CPACK_RPM_CHANGELOG_FILE})
      file(READ ${CPACK_RPM_CHANGELOG_FILE} CPACK_RPM_SPEC_CHANGELOG)
    else()
      message(SEND_ERROR "CPackRPM:Warning: CPACK_RPM_CHANGELOG_FILE <${CPACK_RPM_CHANGELOG_FILE}> does not exists - ignoring")
    endif()
  else()
    set(CPACK_RPM_SPEC_CHANGELOG "* Sun Jul 4 2010 Eric Noulard <eric.noul...@gmail.com> - ${CPACK_RPM_PACKAGE_VERSION}-${CPACK_RPM_PACKAGE_RELEASE}\n  Generated by CPack RPM (no Changelog file were provided)")
  endif()

  # CPACK_RPM_SPEC_MORE_DEFINE
  # This is a generated spec rpm file spaceholder
  if(CPACK_RPM_SPEC_MORE_DEFINE)
    if(CPACK_RPM_PACKAGE_DEBUG)
      message("CPackRPM:Debug: User defined more define spec line specified:\n ${CPACK_RPM_SPEC_MORE_DEFINE}")
    endif()
  endif()

  # Now we may create the RPM build tree structure
  set(CPACK_RPM_ROOTDIR "${CPACK_TOPLEVEL_DIRECTORY}")
  message(STATUS "CPackRPM:Debug: Using CPACK_RPM_ROOTDIR=${CPACK_RPM_ROOTDIR}")
  # Prepare RPM build tree
  file(MAKE_DIRECTORY ${CPACK_RPM_ROOTDIR})
  file(MAKE_DIRECTORY ${CPACK_RPM_ROOTDIR}/tmp)
  file(MAKE_DIRECTORY ${CPACK_RPM_ROOTDIR}/BUILD)
  file(MAKE_DIRECTORY ${CPACK_RPM_ROOTDIR}/RPMS)
  file(MAKE_DIRECTORY ${CPACK_RPM_ROOTDIR}/SOURCES)
  file(MAKE_DIRECTORY ${CPACK_RPM_ROOTDIR}/SPECS)
  file(MAKE_DIRECTORY ${CPACK_RPM_ROOTDIR}/SRPMS)

  #set(CPACK_RPM_FILE_NAME "${CPACK_RPM_PACKAGE_NAME}-${CPACK_RPM_PACKAGE_VERSION}-${CPACK_RPM_PACKAGE_RELEASE}-${CPACK_RPM_PACKAGE_ARCHITECTURE}.rpm")
  set(CPACK_RPM_FILE_NAME "${CPACK_OUTPUT_FILE_NAME}")
  # it seems rpmbuild can't handle spaces in the path
  # neither escaping (as below) nor putting quotes around the path seem to help
  #string(REGEX REPLACE " " "\\\\ " CPACK_RPM_DIRECTORY "${CPACK_TOPLEVEL_DIRECTORY}")
  set(CPACK_RPM_DIRECTORY "${CPACK_TOPLEVEL_DIRECTORY}")

  cpack_rpm_prepare_content_list()

  # In component case, put CPACK_ABSOLUTE_DESTINATION_FILES_<COMPONENT>
  #                   into CPACK_ABSOLUTE_DESTINATION_FILES_INTERNAL
  #         otherwise, put CPACK_ABSOLUTE_DESTINATION_FILES
  # This must be done BEFORE the CPACK_ABSOLUTE_DESTINATION_FILES_INTERNAL handling
  if(CPACK_RPM_PACKAGE_COMPONENT)
    if(CPACK_ABSOLUTE_DESTINATION_FILES)
      cpack_rpm_variable_fallback("COMPONENT_FILES_TAG"
        "CPACK_ABSOLUTE_DESTINATION_FILES_${CPACK_RPM_PACKAGE_COMPONENT}"
        "CPACK_ABSOLUTE_DESTINATION_FILES_${CPACK_RPM_PACKAGE_COMPONENT_UPPER}")
      set(CPACK_ABSOLUTE_DESTINATION_FILES_INTERNAL "${${COMPONENT_FILES_TAG}}")
      if(CPACK_RPM_PACKAGE_DEBUG)
        message("CPackRPM:Debug: Handling Absolute Destination Files: <${CPACK_ABSOLUTE_DESTINATION_FILES_INTERNAL}>")
        message("CPackRPM:Debug: in component = ${CPACK_RPM_PACKAGE_COMPONENT}")
      endif()
    endif()
  else()
    if(CPACK_ABSOLUTE_DESTINATION_FILES)
      set(CPACK_ABSOLUTE_DESTINATION_FILES_INTERNAL "${CPACK_ABSOLUTE_DESTINATION_FILES}")
    endif()
  endif()

  # In component case, set CPACK_RPM_USER_FILELIST_INTERNAL with CPACK_RPM_<COMPONENT>_USER_FILELIST.
  set(CPACK_RPM_USER_FILELIST_INTERNAL "")
  if(CPACK_RPM_PACKAGE_COMPONENT)
    cpack_rpm_variable_fallback("CPACK_RPM_USER_FILELIST_INTERNAL"
      "CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_USER_FILELIST"
      "CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT_UPPER}_USER_FILELIST")

    if(CPACK_RPM_PACKAGE_DEBUG AND CPACK_RPM_USER_FILELIST_INTERNAL)
      message("CPackRPM:Debug: Handling User Filelist: <${CPACK_RPM_USER_FILELIST_INTERNAL}>")
      message("CPackRPM:Debug: in component = ${CPACK_RPM_PACKAGE_COMPONENT}")
    endif()
  elseif(CPACK_RPM_USER_FILELIST)
    set(CPACK_RPM_USER_FILELIST_INTERNAL "${CPACK_RPM_USER_FILELIST}")
  endif()

  # Handle user specified file line list in CPACK_RPM_USER_FILELIST_INTERNAL
  # Remove those files from CPACK_ABSOLUTE_DESTINATION_FILES_INTERNAL
  #                      or CPACK_RPM_INSTALL_FILES,
  # hence it must be done before these auto-generated lists are processed.
  if(CPACK_RPM_USER_FILELIST_INTERNAL)
    if(CPACK_RPM_PACKAGE_DEBUG)
      message("CPackRPM:Debug: Handling User Filelist: <${CPACK_RPM_USER_FILELIST_INTERNAL}>")
    endif()

    # Create CMake list from CPACK_RPM_INSTALL_FILES
    string(STRIP "${CPACK_RPM_INSTALL_FILES}" CPACK_RPM_INSTALL_FILES_LIST)
    string(REPLACE "\n" ";" CPACK_RPM_INSTALL_FILES_LIST
                            "${CPACK_RPM_INSTALL_FILES_LIST}")
    string(REPLACE "\"" "" CPACK_RPM_INSTALL_FILES_LIST
                            "${CPACK_RPM_INSTALL_FILES_LIST}")

    set(CPACK_RPM_USER_INSTALL_FILES "")
    foreach(F IN LISTS CPACK_RPM_USER_FILELIST_INTERNAL)
      string(REGEX REPLACE "%[A-Za-z0-9\(\),-]* " "" F_PATH ${F})
      string(REGEX MATCH "%[A-Za-z0-9\(\),-]*" F_PREFIX ${F})

      if(CPACK_RPM_PACKAGE_DEBUG)
        message("CPackRPM:Debug: F_PREFIX=<${F_PREFIX}>, F_PATH=<${F_PATH}>")
      endif()
      if(F_PREFIX)
        set(F_PREFIX "${F_PREFIX} ")
      endif()
      # Rebuild the user list file
      set(CPACK_RPM_USER_INSTALL_FILES "${CPACK_RPM_USER_INSTALL_FILES}${F_PREFIX}\"${F_PATH}\"\n")

      # Remove from CPACK_RPM_INSTALL_FILES and CPACK_ABSOLUTE_DESTINATION_FILES_INTERNAL
      list(REMOVE_ITEM CPACK_RPM_INSTALL_FILES_LIST ${F_PATH})
      # ABSOLUTE destination files list may not exists at all
      if (CPACK_ABSOLUTE_DESTINATION_FILES_INTERNAL)
        list(REMOVE_ITEM CPACK_ABSOLUTE_DESTINATION_FILES_INTERNAL ${F_PATH})
      endif()
    endforeach()

    # Rebuild CPACK_RPM_INSTALL_FILES
    set(CPACK_RPM_INSTALL_FILES "")
    foreach(F IN LISTS CPACK_RPM_INSTALL_FILES_LIST)
      set(CPACK_RPM_INSTALL_FILES "${CPACK_RPM_INSTALL_FILES}\"${F}\"\n")
    endforeach()
  else()
    set(CPACK_RPM_USER_INSTALL_FILES "")
  endif()

  if (CPACK_ABSOLUTE_DESTINATION_FILES_INTERNAL)
    if(CPACK_RPM_PACKAGE_DEBUG)
      message("CPackRPM:Debug: Handling Absolute Destination Files: ${CPACK_ABSOLUTE_DESTINATION_FILES_INTERNAL}")
    endif()
    # Remove trailing space
    string(STRIP "${CPACK_RPM_INSTALL_FILES}" CPACK_RPM_INSTALL_FILES_LIST)
    # Transform endline separated - string into CMake List
    string(REPLACE "\n" ";" CPACK_RPM_INSTALL_FILES_LIST "${CPACK_RPM_INSTALL_FILES_LIST}")
    # Remove unecessary quotes
    string(REPLACE "\"" "" CPACK_RPM_INSTALL_FILES_LIST "${CPACK_RPM_INSTALL_FILES_LIST}")
    # Remove ABSOLUTE install file from INSTALL FILE LIST
    list(REMOVE_ITEM CPACK_RPM_INSTALL_FILES_LIST ${CPACK_ABSOLUTE_DESTINATION_FILES_INTERNAL})
    # Rebuild INSTALL_FILES
    set(CPACK_RPM_INSTALL_FILES "")
    foreach(F IN LISTS CPACK_RPM_INSTALL_FILES_LIST)
      set(CPACK_RPM_INSTALL_FILES "${CPACK_RPM_INSTALL_FILES}\"${F}\"\n")
    endforeach()
    # Build ABSOLUTE_INSTALL_FILES
    set(CPACK_RPM_ABSOLUTE_INSTALL_FILES "")
    foreach(F IN LISTS CPACK_ABSOLUTE_DESTINATION_FILES_INTERNAL)
      set(CPACK_RPM_ABSOLUTE_INSTALL_FILES "${CPACK_RPM_ABSOLUTE_INSTALL_FILES}%config \"${F}\"\n")
    endforeach()
    if(CPACK_RPM_PACKAGE_DEBUG)
      message("CPackRPM:Debug: CPACK_RPM_ABSOLUTE_INSTALL_FILES=${CPACK_RPM_ABSOLUTE_INSTALL_FILES}")
      message("CPackRPM:Debug: CPACK_RPM_INSTALL_FILES=${CPACK_RPM_INSTALL_FILES}")
    endif()
  else()
    # reset vars in order to avoid leakage of value(s) from one component to another
    set(CPACK_RPM_ABSOLUTE_INSTALL_FILES "")
  endif()

  # Prepare install files
  cpack_rpm_prepare_install_files(
      "${CPACK_RPM_INSTALL_FILES}"
      "${WDIR}"
      "${RPM_USED_PACKAGE_PREFIXES}"
      "${CPACK_RPM_PACKAGE_RELOCATABLE}"
    )

  # The name of the final spec file to be used by rpmbuild
  set(CPACK_RPM_BINARY_SPECFILE "${CPACK_RPM_ROOTDIR}/SPECS/${CPACK_RPM_PACKAGE_NAME}.spec")

  # Print out some debug information if we were asked for that
  if(CPACK_RPM_PACKAGE_DEBUG)
     message("CPackRPM:Debug: CPACK_TOPLEVEL_DIRECTORY          = ${CPACK_TOPLEVEL_DIRECTORY}")
     message("CPackRPM:Debug: CPACK_TOPLEVEL_TAG                = ${CPACK_TOPLEVEL_TAG}")
     message("CPackRPM:Debug: CPACK_TEMPORARY_DIRECTORY         = ${CPACK_TEMPORARY_DIRECTORY}")
     message("CPackRPM:Debug: CPACK_OUTPUT_FILE_NAME            = ${CPACK_OUTPUT_FILE_NAME}")
     message("CPackRPM:Debug: CPACK_OUTPUT_FILE_PATH            = ${CPACK_OUTPUT_FILE_PATH}")
     message("CPackRPM:Debug: CPACK_PACKAGE_FILE_NAME           = ${CPACK_PACKAGE_FILE_NAME}")
     message("CPackRPM:Debug: CPACK_RPM_BINARY_SPECFILE         = ${CPACK_RPM_BINARY_SPECFILE}")
     message("CPackRPM:Debug: CPACK_PACKAGE_INSTALL_DIRECTORY   = ${CPACK_PACKAGE_INSTALL_DIRECTORY}")
     message("CPackRPM:Debug: CPACK_TEMPORARY_PACKAGE_FILE_NAME = ${CPACK_TEMPORARY_PACKAGE_FILE_NAME}")
  endif()

  #
  # USER generated/provided spec file handling.
  #

  # We can have a component specific spec file.
  if(CPACK_RPM_PACKAGE_COMPONENT)
    cpack_rpm_variable_fallback("CPACK_RPM_USER_BINARY_SPECFILE"
      "CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_USER_BINARY_SPECFILE"
      "CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT_UPPER}_USER_BINARY_SPECFILE")
  endif()

  # We should generate a USER spec file template:
  #  - either because the user asked for it : CPACK_RPM_GENERATE_USER_BINARY_SPECFILE_TEMPLATE
  #  - or the user did not provide one : NOT CPACK_RPM_USER_BINARY_SPECFILE
  if(CPACK_RPM_GENERATE_USER_BINARY_SPECFILE_TEMPLATE OR NOT CPACK_RPM_USER_BINARY_SPECFILE)
     file(WRITE ${CPACK_RPM_BINARY_SPECFILE}.in
      "# -*- rpm-spec -*-
BuildRoot:      \@CPACK_RPM_DIRECTORY\@/\@CPACK_PACKAGE_FILE_NAME\@\@CPACK_RPM_PACKAGE_COMPONENT_PART_PATH\@
Summary:        \@CPACK_RPM_PACKAGE_SUMMARY\@
Name:           \@CPACK_RPM_PACKAGE_NAME\@
Version:        \@CPACK_RPM_PACKAGE_VERSION\@
Release:        \@CPACK_RPM_PACKAGE_RELEASE\@
License:        \@CPACK_RPM_PACKAGE_LICENSE\@
Group:          \@CPACK_RPM_PACKAGE_GROUP\@
Vendor:         \@CPACK_RPM_PACKAGE_VENDOR\@
\@TMP_RPM_URL\@
\@TMP_RPM_REQUIRES\@
\@TMP_RPM_REQUIRES_PRE\@
\@TMP_RPM_REQUIRES_POST\@
\@TMP_RPM_REQUIRES_PREUN\@
\@TMP_RPM_REQUIRES_POSTUN\@
\@TMP_RPM_PROVIDES\@
\@TMP_RPM_OBSOLETES\@
\@TMP_RPM_CONFLICTS\@
\@TMP_RPM_AUTOPROV\@
\@TMP_RPM_AUTOREQ\@
\@TMP_RPM_AUTOREQPROV\@
\@TMP_RPM_BUILDARCH\@
\@TMP_RPM_PREFIXES\@

%define _rpmdir \@CPACK_RPM_DIRECTORY\@
%define _rpmfilename \@CPACK_RPM_FILE_NAME\@
%define _unpackaged_files_terminate_build 0
%define _topdir \@CPACK_RPM_DIRECTORY\@
\@TMP_RPM_SPEC_INSTALL_POST\@
\@CPACK_RPM_SPEC_MORE_DEFINE\@
\@CPACK_RPM_COMPRESSION_TYPE_TMP\@

%description
\@CPACK_RPM_PACKAGE_DESCRIPTION\@

# This is a shortcutted spec file generated by CMake RPM generator
# we skip _install step because CPack does that for us.
# We do only save CPack installed tree in _prepr
# and then restore it in build.
%prep
mv $RPM_BUILD_ROOT \"\@CPACK_TOPLEVEL_DIRECTORY\@/tmpBBroot\"

#p build

%install
if [ -e $RPM_BUILD_ROOT ];
then
  rm -rf $RPM_BUILD_ROOT
fi
mv \"\@CPACK_TOPLEVEL_DIRECTORY\@/tmpBBroot\" $RPM_BUILD_ROOT

%clean

%post
\@RPM_SYMLINK_POSTINSTALL\@
\@CPACK_RPM_SPEC_POSTINSTALL\@

%postun
\@CPACK_RPM_SPEC_POSTUNINSTALL\@

%pre
\@CPACK_RPM_SPEC_PREINSTALL\@

%preun
\@CPACK_RPM_SPEC_PREUNINSTALL\@

%files
%defattr(-,root,root,-)
\@CPACK_RPM_INSTALL_FILES\@
\@CPACK_RPM_ABSOLUTE_INSTALL_FILES\@
\@CPACK_RPM_USER_INSTALL_FILES\@

%changelog
\@CPACK_RPM_SPEC_CHANGELOG\@
")
    # Stop here if we were asked to only generate a template USER spec file
    # The generated file may then be used as a template by user who wants
    # to customize their own spec file.
    if(CPACK_RPM_GENERATE_USER_BINARY_SPECFILE_TEMPLATE)
       message(FATAL_ERROR "CPackRPM: STOP here Generated USER binary spec file templare is: ${CPACK_RPM_BINARY_SPECFILE}.in")
    endif()
  endif()

  # After that we may either use a user provided spec file
  # or generate one using appropriate variables value.
  if(CPACK_RPM_USER_BINARY_SPECFILE)
    # User may have specified SPECFILE just use it
    message("CPackRPM: Will use USER specified spec file: ${CPACK_RPM_USER_BINARY_SPECFILE}")
    # The user provided file is processed for @var replacement
    configure_file(${CPACK_RPM_USER_BINARY_SPECFILE} ${CPACK_RPM_BINARY_SPECFILE} @ONLY)
  else()
    # No User specified spec file, will use the generated spec file
    message("CPackRPM: Will use GENERATED spec file: ${CPACK_RPM_BINARY_SPECFILE}")
    # Note the just created file is processed for @var replacement
    configure_file(${CPACK_RPM_BINARY_SPECFILE}.in ${CPACK_RPM_BINARY_SPECFILE} @ONLY)
  endif()

  if(RPMBUILD_EXECUTABLE)
    # Now call rpmbuild using the SPECFILE
    execute_process(
      COMMAND "${RPMBUILD_EXECUTABLE}" -bb
              --define "_topdir ${CPACK_RPM_DIRECTORY}"
              --buildroot "${CPACK_RPM_DIRECTORY}/${CPACK_PACKAGE_FILE_NAME}${CPACK_RPM_PACKAGE_COMPONENT_PART_PATH}"
              --target "${CPACK_RPM_PACKAGE_ARCHITECTURE}"
              "${CPACK_RPM_BINARY_SPECFILE}"
      WORKING_DIRECTORY "${CPACK_TOPLEVEL_DIRECTORY}/${CPACK_PACKAGE_FILE_NAME}${CPACK_RPM_PACKAGE_COMPONENT_PART_PATH}"
      RESULT_VARIABLE CPACK_RPMBUILD_EXEC_RESULT
      ERROR_FILE "${CPACK_TOPLEVEL_DIRECTORY}/rpmbuild${CPACK_RPM_PACKAGE_NAME}.err"
      OUTPUT_FILE "${CPACK_TOPLEVEL_DIRECTORY}/rpmbuild${CPACK_RPM_PACKAGE_NAME}.out")
    if(CPACK_RPM_PACKAGE_DEBUG OR CPACK_RPMBUILD_EXEC_RESULT)
      file(READ ${CPACK_TOPLEVEL_DIRECTORY}/rpmbuild${CPACK_RPM_PACKAGE_NAME}.err RPMBUILDERR)
      file(READ ${CPACK_TOPLEVEL_DIRECTORY}/rpmbuild${CPACK_RPM_PACKAGE_NAME}.out RPMBUILDOUT)
      message("CPackRPM:Debug: You may consult rpmbuild logs in: ")
      message("CPackRPM:Debug:    - ${CPACK_TOPLEVEL_DIRECTORY}/rpmbuild${CPACK_RPM_PACKAGE_NAME}.err")
      message("CPackRPM:Debug: *** ${RPMBUILDERR} ***")
      message("CPackRPM:Debug:    - ${CPACK_TOPLEVEL_DIRECTORY}/rpmbuild${CPACK_RPM_PACKAGE_NAME}.out")
      message("CPackRPM:Debug: *** ${RPMBUILDOUT} ***")
    endif()
  else()
    if(ALIEN_EXECUTABLE)
      message(FATAL_ERROR "RPM packaging through alien not done (yet)")
    endif()
  endif()
endfunction()

cpack_rpm_generate_package()
-- 

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