CMake/Modules/CPackRPM.cmake

#.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 :
# http://www.cmake.org/Wiki/CMake:CPackConfiguration
#
# However CPackRPM has specific features which are controlled by the
# specifics CPACK_RPM_XXX variables.  CPackRPM is a component aware
# generator so when CPACK_RPM_COMPONENT_INSTALL is ON some more
# CPACK_RPM_<ComponentName>_XXXX variables may be used in order to have
# component specific values.  Note however that <componentName> refers
# to the **grouping name**.  This 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.  You'll find a detailed usage of
# CPackRPM on the wiki:
#
# ::
#
#   http://www.cmake.org/Wiki/CMake:CPackPackageGenerators#RPM_.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
#
#  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
#
#  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
#
#  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_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_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
#
#  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
#
#  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
#
#  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
#
#  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
#
#  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
#
#  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.

#=============================================================================
# Copyright 2007-2009 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_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_PREFIX}" PATH_PREFIX)
  else()
    file(TO_CMAKE_PATH "${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}")
    set(TMP_RPM_PREFIXES "${TMP_RPM_PREFIXES}Prefix: ${PATH_PREFIX}\n")
    list(APPEND RPM_USED_PACKAGE_PREFIXES "${PATH_PREFIX}")
  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(TMP_RPM_PREFIXES "${TMP_RPM_PREFIXES}" 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()

# 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)
  set(CPACK_RPM_PACKAGE_COMPONENT_PART_NAME "-${CPACK_RPM_PACKAGE_COMPONENT}")
  string(TOUPPER ${CPACK_RPM_PACKAGE_COMPONENT} CPACK_RPM_PACKAGE_COMPONENT_UPPER)
else()
  set(CPACK_RPM_PACKAGE_COMPONENT_PART_NAME "")
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)

# CPACK_RPM_PACKAGE_SUMMARY_ is used only locally so that it can be unset each time before use otherwise
# component packaging could leak variable content between components
unset(CPACK_RPM_PACKAGE_SUMMARY_)
if(CPACK_RPM_PACKAGE_SUMMARY)
  set(CPACK_RPM_PACKAGE_SUMMARY_ ${CPACK_RPM_PACKAGE_SUMMARY})
  unset(CPACK_RPM_PACKAGE_SUMMARY)
endif()

#Check for component summary first.
#If not set, it will use regular package summary logic.
if(CPACK_RPM_PACKAGE_COMPONENT)
  if(CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_SUMMARY)
    set(CPACK_RPM_PACKAGE_SUMMARY ${CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_SUMMARY})
  endif()
endif()

if(NOT CPACK_RPM_PACKAGE_SUMMARY)
  if(CPACK_RPM_PACKAGE_SUMMARY_)
    set(CPACK_RPM_PACKAGE_SUMMARY ${CPACK_RPM_PACKAGE_SUMMARY_})
  elseif(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()

# 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()

set(_CPACK_RPM_PACKAGE_ARCHITECTURE ${CPACK_RPM_PACKAGE_ARCHITECTURE})

#prefer component architecture
if(CPACK_RPM_PACKAGE_COMPONENT)
  if(CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_ARCHITECTURE)
    set(_CPACK_RPM_PACKAGE_ARCHITECTURE ${CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_ARCHITECTURE})
    if(CPACK_RPM_PACKAGE_DEBUG)
      message("CPackRPM:Debug: using component build arch = ${_CPACK_RPM_PACKAGE_ARCHITECTURE}")
    endif()
  endif()
endif()
if(${_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(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
#

# CPACK_RPM_PACKAGE_DESCRIPTION_ is used only locally so that it can be unset each time before use otherwise
# component packaging could leak variable content between components
unset(CPACK_RPM_PACKAGE_DESCRIPTION_)
if(CPACK_RPM_PACKAGE_DESCRIPTION)
  set(CPACK_RPM_PACKAGE_DESCRIPTION_ ${CPACK_RPM_PACKAGE_DESCRIPTION})
  unset(CPACK_RPM_PACKAGE_DESCRIPTION)
endif()

#Check for a component description first.
#If not set, it will use regular package description logic.
if(CPACK_RPM_PACKAGE_COMPONENT)
  if(CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_DESCRIPTION)
    set(CPACK_RPM_PACKAGE_DESCRIPTION ${CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_DESCRIPTION})
  elseif(CPACK_COMPONENT_${CPACK_RPM_PACKAGE_COMPONENT_UPPER}_DESCRIPTION)
    set(CPACK_RPM_PACKAGE_DESCRIPTION ${CPACK_COMPONENT_${CPACK_RPM_PACKAGE_COMPONENT_UPPER}_DESCRIPTION})
  endif()
endif()

if(NOT CPACK_RPM_PACKAGE_DESCRIPTION)
  if(CPACK_RPM_PACKAGE_DESCRIPTION_)
    set(CPACK_RPM_PACKAGE_DESCRIPTION ${CPACK_RPM_PACKAGE_DESCRIPTION_})
  elseif(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)
  set(CPACK_RPM_PACKAGE_RELOCATABLE TRUE)
endif()
if(CPACK_RPM_PACKAGE_RELOCATABLE)
  unset(TMP_RPM_PREFIXES)

  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.")
  else()
    set(CPACK_RPM_PACKAGE_PREFIX ${CPACK_PACKAGING_INSTALL_PREFIX}) # kept for back compatibility (provided external RPM spec files)
    cpack_rpm_prepare_relocation_paths()
  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 ${_RPM_SPEC_HEADER}")
    endif()
    if(CPACK_RPM_PACKAGE_COMPONENT)
        if(DEFINED CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_${_RPM_SPEC_HEADER})
            if(CPACK_RPM_PACKAGE_DEBUG)
              message("CPackRPM:Debug: using CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_${_RPM_SPEC_HEADER}")
            endif()
            set(CPACK_RPM_PACKAGE_${_RPM_SPEC_HEADER}_TMP ${CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_${_RPM_SPEC_HEADER}})
        else()
            if(DEFINED CPACK_RPM_PACKAGE_${_RPM_SPEC_HEADER})
              if(CPACK_RPM_PACKAGE_DEBUG)
                message("CPackRPM:Debug: CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PACKAGE_${_RPM_SPEC_HEADER} not defined")
                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()
        endif()
    else()
        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()
    endif()

  # Do not forget to unset previously set header (from previous component)
  unset(TMP_RPM_${_RPM_SPEC_HEADER})
  # Treat the RPM Spec keyword iff it has been properly defined
  if(DEFINED CPACK_RPM_PACKAGE_${_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
if(CPACK_RPM_PACKAGE_COMPONENT)
  if(CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_POST_INSTALL_SCRIPT_FILE)
    set(CPACK_RPM_POST_INSTALL_READ_FILE ${CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_POST_INSTALL_SCRIPT_FILE})
  else()
    set(CPACK_RPM_POST_INSTALL_READ_FILE ${CPACK_RPM_POST_INSTALL_SCRIPT_FILE})
  endif()
  if(CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_POST_UNINSTALL_SCRIPT_FILE)
    set(CPACK_RPM_POST_UNINSTALL_READ_FILE ${CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_POST_UNINSTALL_SCRIPT_FILE})
  else()
    set(CPACK_RPM_POST_UNINSTALL_READ_FILE ${CPACK_RPM_POST_UNINSTALL_SCRIPT_FILE})
  endif()
else()
  set(CPACK_RPM_POST_INSTALL_READ_FILE ${CPACK_RPM_POST_INSTALL_SCRIPT_FILE})
  set(CPACK_RPM_POST_UNINSTALL_READ_FILE ${CPACK_RPM_POST_UNINSTALL_SCRIPT_FILE})
endif()

# Handle post-install file if it has been specified
if(CPACK_RPM_POST_INSTALL_READ_FILE)
  if(EXISTS ${CPACK_RPM_POST_INSTALL_READ_FILE})
    file(READ ${CPACK_RPM_POST_INSTALL_READ_FILE} CPACK_RPM_SPEC_POSTINSTALL)
  else()
    message("CPackRPM:Warning: CPACK_RPM_POST_INSTALL_SCRIPT_FILE <${CPACK_RPM_POST_INSTALL_READ_FILE}> does not exists - ignoring")
  endif()
else()
  # reset SPEC var value if no post install file has been specified
  # (either globally or component-wise)
  set(CPACK_RPM_SPEC_POSTINSTALL "")
endif()

# Handle post-uninstall file if it has been specified
if(CPACK_RPM_POST_UNINSTALL_READ_FILE)
  if(EXISTS ${CPACK_RPM_POST_UNINSTALL_READ_FILE})
    file(READ ${CPACK_RPM_POST_UNINSTALL_READ_FILE} CPACK_RPM_SPEC_POSTUNINSTALL)
  else()
    message("CPackRPM:Warning: CPACK_RPM_POST_UNINSTALL_SCRIPT_FILE <${CPACK_RPM_POST_UNINSTALL_READ_FILE}> does not exists - ignoring")
  endif()
else()
  # reset SPEC var value if no post uninstall file has been specified
  # (either globally or component-wise)
  set(CPACK_RPM_SPEC_POSTUNINSTALL "")
endif()

# 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
if(CPACK_RPM_PACKAGE_COMPONENT)
  if(CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PRE_INSTALL_SCRIPT_FILE)
    set(CPACK_RPM_PRE_INSTALL_READ_FILE ${CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PRE_INSTALL_SCRIPT_FILE})
  else()
    set(CPACK_RPM_PRE_INSTALL_READ_FILE ${CPACK_RPM_PRE_INSTALL_SCRIPT_FILE})
  endif()
  if(CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PRE_UNINSTALL_SCRIPT_FILE)
    set(CPACK_RPM_PRE_UNINSTALL_READ_FILE ${CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_PRE_UNINSTALL_SCRIPT_FILE})
  else()
    set(CPACK_RPM_PRE_UNINSTALL_READ_FILE ${CPACK_RPM_PRE_UNINSTALL_SCRIPT_FILE})
  endif()
else()
  set(CPACK_RPM_PRE_INSTALL_READ_FILE ${CPACK_RPM_PRE_INSTALL_SCRIPT_FILE})
  set(CPACK_RPM_PRE_UNINSTALL_READ_FILE ${CPACK_RPM_PRE_UNINSTALL_SCRIPT_FILE})
endif()

# Handle pre-install file if it has been specified
if(CPACK_RPM_PRE_INSTALL_READ_FILE)
  if(EXISTS ${CPACK_RPM_PRE_INSTALL_READ_FILE})
    file(READ ${CPACK_RPM_PRE_INSTALL_READ_FILE} CPACK_RPM_SPEC_PREINSTALL)
  else()
    message("CPackRPM:Warning: CPACK_RPM_PRE_INSTALL_SCRIPT_FILE <${CPACK_RPM_PRE_INSTALL_READ_FILE}> does not exists - ignoring")
  endif()
else()
  # reset SPEC var value if no pre-install file has been specified
  # (either globally or component-wise)
  set(CPACK_RPM_SPEC_PREINSTALL "")
endif()

# Handle pre-uninstall file if it has been specified
if(CPACK_RPM_PRE_UNINSTALL_READ_FILE)
  if(EXISTS ${CPACK_RPM_PRE_UNINSTALL_READ_FILE})
    file(READ ${CPACK_RPM_PRE_UNINSTALL_READ_FILE} CPACK_RPM_SPEC_PREUNINSTALL)
  else()
    message("CPackRPM:Warning: CPACK_RPM_PRE_UNINSTALL_SCRIPT_FILE <${CPACK_RPM_PRE_UNINSTALL_READ_FILE}> does not exists - ignoring")
  endif()
else()
  # reset SPEC var value if no pre-uninstall file has been specified
  # (either globally or component-wise)
  set(CPACK_RPM_SPEC_PREUNINSTALL "")
endif()

# 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.noulard@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}")

# 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_PREFIX and remove
  # the final element (so the install-prefix dir itself is not omitted
  # from the RPM's content-list)
  foreach(CPACK_RPM_PACKAGE_PREFIX ${RPM_PACKAGE_PREFIXES})
    string(REPLACE "/" ";" _CPACK_RPM_PACKAGE_PREFIX_ELEMS ".${CPACK_RPM_PACKAGE_PREFIX}")
    list(REMOVE_AT _CPACK_RPM_PACKAGE_PREFIX_ELEMS -1)
    unset(_TMP_LIST)
    # Now generate all of the parent dirs of CPACK_RPM_PACKAGE_PREFIX
    foreach(_ELEM ${_CPACK_RPM_PACKAGE_PREFIX_ELEMS})
      list(APPEND _TMP_LIST "${_ELEM}")
      string(REPLACE ";" "/" _OMIT_DIR "${_TMP_LIST}")
      list(FIND _RPM_DIRS_TO_OMIT "${_OMIT_DIR}" _DUPLICATE_FOUND)
      if(_DUPLICATE_FOUND EQUAL -1)
        set(_OMIT_DIR "-o -path ${_OMIT_DIR}")
        separate_arguments(_OMIT_DIR)
        list(APPEND _RPM_DIRS_TO_OMIT ${_OMIT_DIR})
      endif()
    endforeach()
  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()
  foreach(_DIR ${CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST})
    list(APPEND _RPM_DIRS_TO_OMIT "-o;-path;.${_DIR}")
  endforeach()
endif()
if (CPACK_RPM_PACKAGE_DEBUG)
   message("CPackRPM:Debug: Final list of path to OMIT in RPM: ${_RPM_DIRS_TO_OMIT}")
endif()

# Use files tree to construct files command (spec file)
# We should not forget to include symlinks (thus -o -type l)
# We should include directory as well (thus -type d)
#   but not the main local dir "." (thus -a -not -name ".")
# We must remove the './' due to the local search and escape the
# file name by enclosing it between double quotes (thus the sed)
# Then we must authorize any man pages extension (adding * at the end)
# because rpmbuild may automatically compress those files
execute_process(COMMAND find . -type f -o -type l -o (-type d -a -not ( -name "." ${_RPM_DIRS_TO_OMIT} ) )
                COMMAND sed s:.*/man.*/.*:&*:
                COMMAND sed s/\\.\\\(.*\\\)/\"\\1\"/
                WORKING_DIRECTORY "${WDIR}"
                OUTPUT_VARIABLE CPACK_RPM_INSTALL_FILES)

# 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)
   set(COMPONENT_FILES_TAG "CPACK_ABSOLUTE_DESTINATION_FILES_${CPACK_RPM_PACKAGE_COMPONENT}")
   set(CPACK_ABSOLUTE_DESTINATION_FILES_INTERNAL "${${COMPONENT_FILES_TAG}}")
   if(CPACK_RPM_PACKAGE_DEBUG)
     message("CPackRPM:Debug: Handling Absolute Destination Files: <${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.
if(CPACK_RPM_PACKAGE_COMPONENT)
  if(CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_USER_FILELIST)
    set(CPACK_RPM_USER_FILELIST_INTERNAL ${CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_USER_FILELIST})
    if(CPACK_RPM_PACKAGE_DEBUG)
      message("CPackRPM:Debug: Handling User Filelist: <${CPACK_RPM_USER_FILELIST_INTERNAL}>")
      message("CPackRPM:Debug: in component = ${CPACK_RPM_PACKAGE_COMPONENT}")
    endif()
  else()
    set(CPACK_RPM_USER_FILELIST_INTERNAL "")
  endif()
else()
  if(CPACK_RPM_USER_FILELIST)
    set(CPACK_RPM_USER_FILELIST_INTERNAL "${CPACK_RPM_USER_FILELIST}")
  else()
    set(CPACK_RPM_USER_FILELIST_INTERNAL "")
  endif()
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()

# Prepend directories in ${CPACK_RPM_INSTALL_FILES} with %dir
# This is necessary to avoid duplicate files since rpmbuild do
# recursion on its own when encountering a pathname which is a directory
# which is not flagged as %dir
string(STRIP "${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_INSTALL_FILES "")
foreach(F IN LISTS CPACK_RPM_INSTALL_FILES_LIST)
  if(IS_DIRECTORY "${WDIR}/${F}")
    set(CPACK_RPM_INSTALL_FILES "${CPACK_RPM_INSTALL_FILES}%dir \"${F}\"\n")
  else()
    set(CPACK_RPM_INSTALL_FILES "${CPACK_RPM_INSTALL_FILES}\"${F}\"\n")
  endif()
endforeach()
set(CPACK_RPM_INSTALL_FILES_LIST "")

# 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}${CPACK_RPM_PACKAGE_COMPONENT_PART_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 AND CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_USER_BINARY_SPECFILE)
  set(CPACK_RPM_USER_BINARY_SPECFILE ${CPACK_RPM_${CPACK_RPM_PACKAGE_COMPONENT}_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\@\@CPACK_RPM_PACKAGE_COMPONENT_PART_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
\@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${CPACK_RPM_PACKAGE_COMPONENT_PART_NAME}.err"
    OUTPUT_FILE "${CPACK_TOPLEVEL_DIRECTORY}/rpmbuild${CPACK_RPM_PACKAGE_COMPONENT_PART_NAME}.out")
  if(CPACK_RPM_PACKAGE_DEBUG OR CPACK_RPMBUILD_EXEC_RESULT)
    file(READ ${CPACK_TOPLEVEL_DIRECTORY}/rpmbuild${CPACK_RPM_PACKAGE_COMPONENT_PART_NAME}.err RPMBUILDERR)
    file(READ ${CPACK_TOPLEVEL_DIRECTORY}/rpmbuild${CPACK_RPM_PACKAGE_COMPONENT_PART_NAME}.out RPMBUILDOUT)
    message("CPackRPM:Debug: You may consult rpmbuild logs in: ")
    message("CPackRPM:Debug:    - ${CPACK_TOPLEVEL_DIRECTORY}/rpmbuild${CPACK_RPM_PACKAGE_COMPONENT_PART_NAME}.err")
    message("CPackRPM:Debug: *** ${RPMBUILDERR} ***")
    message("CPackRPM:Debug:    - ${CPACK_TOPLEVEL_DIRECTORY}/rpmbuild${CPACK_RPM_PACKAGE_COMPONENT_PART_NAME}.out")
    message("CPackRPM:Debug: *** ${RPMBUILDERR} ***")
  endif()
else()
  if(ALIEN_EXECUTABLE)
    message(FATAL_ERROR "RPM packaging through alien not done (yet)")
  endif()
endif()

# reset variables from temporary variables
if(CPACK_RPM_PACKAGE_SUMMARY_)
  set(CPACK_RPM_PACKAGE_SUMMARY ${CPACK_RPM_PACKAGE_SUMMARY_})
else()
  unset(CPACK_RPM_PACKAGE_SUMMARY)
endif()
if(CPACK_RPM_PACKAGE_DESCRIPTION_)
  set(CPACK_RPM_PACKAGE_DESCRIPTION ${CPACK_RPM_PACKAGE_DESCRIPTION_})
else()
  unset(CPACK_RPM_PACKAGE_DESCRIPTION)
endif()