summaryrefslogtreecommitdiffstats
path: root/Modules/CPackDeb.cmake
blob: 653283c0114fdd689578fe594cdb0f9ab45a5a22 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.

#.rst:
# CPackDeb
# --------
#
# The built in (binary) CPack Deb generator (Unix only)
#
# Variables specific to CPack Debian (DEB) generator
# ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
#
# CPackDeb may be used to create Deb package using :module:`CPack`.
# CPackDeb is a :module:`CPack` generator thus it uses the ``CPACK_XXX``
# variables used by :module:`CPack`.
#
# CPackDeb generator should work on any Linux host but it will produce
# better deb package when Debian specific tools ``dpkg-xxx`` are usable on
# the build system.
#
# CPackDeb has specific features which are controlled by the specifics
# :code:`CPACK_DEBIAN_XXX` variables.
#
# :code:`CPACK_DEBIAN_<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.
#
# Here are some CPackDeb wiki resources that are here for historic reasons and
# are no longer maintained but may still prove useful:
#
#  - https://cmake.org/Wiki/CMake:CPackConfiguration
#  - https://cmake.org/Wiki/CMake:CPackPackageGenerators#DEB_.28UNIX_only.29
#
# List of CPackRPM specific variables:
#
# .. variable:: CPACK_DEB_PACKAGE_COMPONENT
#
#  Enable component packaging for CPackRPM
#
#  * Mandatory : NO
#  * Default   : OFF
#
#  If enabled (ON) multiple packages are generated. By default a single package
#  containing files of all components is generated.
#
# .. variable:: CPACK_DEBIAN_PACKAGE_NAME
#               CPACK_DEBIAN_<COMPONENT>_PACKAGE_NAME
#
#  Set Package control field (variable is automatically transformed to lower
#  case).
#
#  * Mandatory : YES
#  * Default   :
#
#    - :variable:`CPACK_PACKAGE_NAME` for non-component based
#      installations
#    - :variable:`CPACK_DEBIAN_PACKAGE_NAME` suffixed with -<COMPONENT>
#      for component-based installations.
#
#  See https://www.debian.org/doc/debian-policy/ch-controlfields.html#s-f-Source
#
# .. variable:: CPACK_DEBIAN_FILE_NAME
#               CPACK_DEBIAN_<COMPONENT>_FILE_NAME
#
#  Package file name.
#
#  * Mandatory : YES
#  * Default   : ``<CPACK_PACKAGE_FILE_NAME>[-<component>].deb``
#
#  This may be set to ``DEB-DEFAULT`` to allow CPackDeb to generate package file
#  name by itself in deb format::
#
#    <PackageName>_<VersionNumber>-<DebianRevisionNumber>_<DebianArchitecture>.deb
#
#  Alternatively provided package file name must end with ``.deb`` suffix.
#
#  .. note::
#
#    Preferred setting of this variable is ``DEB-DEFAULT`` but for backward
#    compatibility with CPackDeb in CMake prior to version 3.6 this feature
#    is disabled by default.
#
#  .. note::
#
#    By using non default filenames duplicate names may occur. Duplicate files
#    get overwritten and it is up to the packager to set the variables in a
#    manner that will prevent such errors.
#
# .. variable:: CPACK_DEBIAN_PACKAGE_VERSION
#
#  The Debian package version
#
#  * Mandatory : YES
#  * Default   : :variable:`CPACK_PACKAGE_VERSION`
#
# .. variable:: CPACK_DEBIAN_PACKAGE_RELEASE
#
#  The Debian package release - Debian revision number.
#
#  * Mandatory : YES
#  * Default   : 1
#
#  This is the numbering of the DEB package itself, i.e. the version of the
#  packaging and not the version of the content (see
#  :variable:`CPACK_DEBIAN_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_DEBIAN_PACKAGE_ARCHITECTURE
#               CPACK_DEBIAN_<COMPONENT>_PACKAGE_ARCHITECTURE
#
#  The Debian package architecture
#
#  * Mandatory : YES
#  * Default   : Output of :code:`dpkg --print-architecture` (or :code:`i386`
#    if :code:`dpkg` is not found)
#
# .. variable:: CPACK_DEBIAN_PACKAGE_DEPENDS
#               CPACK_DEBIAN_<COMPONENT>_PACKAGE_DEPENDS
#
#  Sets the Debian dependencies of this package.
#
#  * Mandatory : NO
#  * Default   :
#
#    - An empty string for non-component based installations
#    - :variable:`CPACK_DEBIAN_PACKAGE_DEPENDS` for component-based
#      installations.
#
#  .. note::
#
#    If :variable:`CPACK_DEBIAN_PACKAGE_SHLIBDEPS` or
#    more specifically :variable:`CPACK_DEBIAN_<COMPONENT>_PACKAGE_SHLIBDEPS`
#    is set for this component, the discovered dependencies will be appended
#    to :variable:`CPACK_DEBIAN_<COMPONENT>_PACKAGE_DEPENDS` instead of
#    :variable:`CPACK_DEBIAN_PACKAGE_DEPENDS`. If
#    :variable:`CPACK_DEBIAN_<COMPONENT>_PACKAGE_DEPENDS` is an empty string,
#    only the automatically discovered dependencies will be set for this
#    component.
#
#  Example::
#
#    set(CPACK_DEBIAN_PACKAGE_DEPENDS "libc6 (>= 2.3.1-6), libc6 (< 2.4)")
#
# .. variable:: CPACK_DEBIAN_ENABLE_COMPONENT_DEPENDS
#
#  Sets inter component dependencies if listed with
#  :variable:`CPACK_COMPONENT_<compName>_DEPENDS` variables.
#
#  * Mandatory : NO
#  * Default   : -
#
# .. variable:: CPACK_DEBIAN_PACKAGE_MAINTAINER
#
#  The Debian package maintainer
#
#  * Mandatory : YES
#  * Default   : :code:`CPACK_PACKAGE_CONTACT`
#
# .. variable:: CPACK_DEBIAN_PACKAGE_DESCRIPTION
#               CPACK_COMPONENT_<COMPONENT>_DESCRIPTION
#
#  The Debian package description
#
#  * Mandatory : YES
#  * Default   :
#
#    - :variable:`CPACK_DEBIAN_PACKAGE_DESCRIPTION` if set or
#    - :variable:`CPACK_PACKAGE_DESCRIPTION_SUMMARY`
#
#
# .. variable:: CPACK_DEBIAN_PACKAGE_SECTION
#               CPACK_DEBIAN_<COMPONENT>_PACKAGE_SECTION
#
#  Set Section control field e.g. admin, devel, doc, ...
#
#  * Mandatory : YES
#  * Default   : "devel"
#
#  See https://www.debian.org/doc/debian-policy/ch-archive.html#s-subsections
#
# .. variable:: CPACK_DEBIAN_ARCHIVE_TYPE
#
#  The archive format used for creating the Debian package.
#
#  * Mandatory : YES
#  * Default   : "paxr"
#
#  Possible values are:
#
#  - paxr
#  - gnutar
#
#  .. note::
#
#    Default pax archive format is the most portable format and generates
#    packages that do not treat sparse files specially.
#    GNU tar format on the other hand supports longer filenames.
#
# .. variable:: CPACK_DEBIAN_COMPRESSION_TYPE
#
#  The compression used for creating the Debian package.
#
#  * Mandatory : YES
#  * Default   : "gzip"
#
#  Possible values are:
#
#  - lzma
#  - xz
#  - bzip2
#  - gzip
#
# .. variable:: CPACK_DEBIAN_PACKAGE_PRIORITY
#               CPACK_DEBIAN_<COMPONENT>_PACKAGE_PRIORITY
#
#  Set Priority control field e.g. required, important, standard, optional,
#  extra
#
#  * Mandatory : YES
#  * Default   : "optional"
#
#  See https://www.debian.org/doc/debian-policy/ch-archive.html#s-priorities
#
# .. variable:: CPACK_DEBIAN_PACKAGE_HOMEPAGE
#
#  The URL of the web site for this package, preferably (when applicable) the
#  site from which the original source can be obtained and any additional
#  upstream documentation or information may be found.
#
#  * Mandatory : NO
#  * Default   : -
#
#  .. note::
#
#    The content of this field is a simple URL without any surrounding
#    characters such as <>.
#
# .. variable:: CPACK_DEBIAN_PACKAGE_SHLIBDEPS
#               CPACK_DEBIAN_<COMPONENT>_PACKAGE_SHLIBDEPS
#
#  May be set to ON in order to use :code:`dpkg-shlibdeps` to generate
#  better package dependency list.
#
#  * Mandatory : NO
#  * Default   :
#
#    - :variable:`CPACK_DEBIAN_PACKAGE_SHLIBDEPS` if set or
#    - OFF
#
#  .. note::
#
#    You may need set :variable:`CMAKE_INSTALL_RPATH` to an appropriate value
#    if you use this feature, because if you don't :code:`dpkg-shlibdeps`
#    may fail to find your own shared libs.
#    See https://cmake.org/Wiki/CMake_RPATH_handling.
#
# .. variable:: CPACK_DEBIAN_PACKAGE_DEBUG
#
#  May be set when invoking cpack in order to trace debug information
#  during CPackDeb run.
#
#  * Mandatory : NO
#  * Default   : -
#
# .. variable:: CPACK_DEBIAN_PACKAGE_PREDEPENDS
#               CPACK_DEBIAN_<COMPONENT>_PACKAGE_PREDEPENDS
#
#  Sets the `Pre-Depends` field of the Debian package.
#  Like :variable:`Depends <CPACK_DEBIAN_PACKAGE_DEPENDS>`, except that it
#  also forces :code:`dpkg` to complete installation of the packages named
#  before even starting the installation of the package which declares the
#  pre-dependency.
#
#  * Mandatory : NO
#  * Default   :
#
#    - An empty string for non-component based installations
#    - :variable:`CPACK_DEBIAN_PACKAGE_PREDEPENDS` for component-based
#      installations.
#
#  See http://www.debian.org/doc/debian-policy/ch-relationships.html#s-binarydeps
#
# .. variable:: CPACK_DEBIAN_PACKAGE_ENHANCES
#               CPACK_DEBIAN_<COMPONENT>_PACKAGE_ENHANCES
#
#  Sets the `Enhances` field of the Debian package.
#  Similar to :variable:`Suggests <CPACK_DEBIAN_PACKAGE_SUGGESTS>` but works
#  in the opposite direction: declares that a package can enhance the
#  functionality of another package.
#
#  * Mandatory : NO
#  * Default   :
#
#    - An empty string for non-component based installations
#    - :variable:`CPACK_DEBIAN_PACKAGE_ENHANCES` for component-based
#      installations.
#
#  See http://www.debian.org/doc/debian-policy/ch-relationships.html#s-binarydeps
#
# .. variable:: CPACK_DEBIAN_PACKAGE_BREAKS
#               CPACK_DEBIAN_<COMPONENT>_PACKAGE_BREAKS
#
#  Sets the `Breaks` field of the Debian package.
#  When a binary package (P) declares that it breaks other packages (B),
#  :code:`dpkg` will not allow the package (P) which declares `Breaks` be
#  **unpacked** unless the packages that will be broken (B) are deconfigured
#  first.
#  As long as the package (P) is configured, the previously deconfigured
#  packages (B) cannot be reconfigured again.
#
#  * Mandatory : NO
#  * Default   :
#
#    - An empty string for non-component based installations
#    - :variable:`CPACK_DEBIAN_PACKAGE_BREAKS` for component-based
#      installations.
#
#  See https://www.debian.org/doc/debian-policy/ch-relationships.html#s-breaks
#
# .. variable:: CPACK_DEBIAN_PACKAGE_CONFLICTS
#               CPACK_DEBIAN_<COMPONENT>_PACKAGE_CONFLICTS
#
#  Sets the `Conflicts` field of the Debian package.
#  When one binary package declares a conflict with another using a `Conflicts`
#  field, :code:`dpkg` will not allow them to be unpacked on the system at
#  the same time.
#
#  * Mandatory : NO
#  * Default   :
#
#    - An empty string for non-component based installations
#    - :variable:`CPACK_DEBIAN_PACKAGE_CONFLICTS` for component-based
#      installations.
#
#  See https://www.debian.org/doc/debian-policy/ch-relationships.html#s-conflicts
#
#  .. note::
#
#    This is a stronger restriction than
#    :variable:`Breaks <CPACK_DEBIAN_PACKAGE_BREAKS>`, which prevents the
#    broken package from being configured while the breaking package is in
#    the "Unpacked" state but allows both packages to be unpacked at the same
#    time.
#
# .. variable:: CPACK_DEBIAN_PACKAGE_PROVIDES
#               CPACK_DEBIAN_<COMPONENT>_PACKAGE_PROVIDES
#
#  Sets the `Provides` field of the Debian package.
#  A virtual package is one which appears in the `Provides` control field of
#  another package.
#
#  * Mandatory : NO
#  * Default   :
#
#    - An empty string for non-component based installations
#    - :variable:`CPACK_DEBIAN_PACKAGE_PROVIDES` for component-based
#      installations.
#
#  See https://www.debian.org/doc/debian-policy/ch-relationships.html#s-virtual
#
# .. variable:: CPACK_DEBIAN_PACKAGE_REPLACES
#               CPACK_DEBIAN_<COMPONENT>_PACKAGE_REPLACES
#
#  Sets the `Replaces` field of the Debian package.
#  Packages can declare in their control file that they should overwrite
#  files in certain other packages, or completely replace other packages.
#
#  * Mandatory : NO
#  * Default   :
#
#    - An empty string for non-component based installations
#    - :variable:`CPACK_DEBIAN_PACKAGE_REPLACES` for component-based
#      installations.
#
#  See http://www.debian.org/doc/debian-policy/ch-relationships.html#s-binarydeps
#
# .. variable:: CPACK_DEBIAN_PACKAGE_RECOMMENDS
#               CPACK_DEBIAN_<COMPONENT>_PACKAGE_RECOMMENDS
#
#  Sets the `Recommends` field of the Debian package.
#  Allows packages to declare a strong, but not absolute, dependency on other
#  packages.
#
#  * Mandatory : NO
#  * Default   :
#
#    - An empty string for non-component based installations
#    - :variable:`CPACK_DEBIAN_PACKAGE_RECOMMENDS` for component-based
#      installations.
#
#  See http://www.debian.org/doc/debian-policy/ch-relationships.html#s-binarydeps
#
# .. variable:: CPACK_DEBIAN_PACKAGE_SUGGESTS
#               CPACK_DEBIAN_<COMPONENT>_PACKAGE_SUGGESTS
#
#  Sets the `Suggests` field of the Debian package.
#  Allows packages to declare a suggested package install grouping.
#
#  * Mandatory : NO
#  * Default   :
#
#    - An empty string for non-component based installations
#    - :variable:`CPACK_DEBIAN_PACKAGE_SUGGESTS` for component-based
#      installations.
#
#  See http://www.debian.org/doc/debian-policy/ch-relationships.html#s-binarydeps
#
# .. variable:: CPACK_DEBIAN_PACKAGE_GENERATE_SHLIBS
#
#  * Mandatory : NO
#  * Default   : OFF
#
#  Allows to generate shlibs control file automatically. Compatibility is defined by
#  :variable:`CPACK_DEBIAN_PACKAGE_GENERATE_SHLIBS_POLICY` variable value.
#
#  .. note::
#
#    Libraries are only considered if they have both library name and version
#    set. This can be done by setting SOVERSION property with
#    :command:`set_target_properties` command.
#
# .. variable:: CPACK_DEBIAN_PACKAGE_GENERATE_SHLIBS_POLICY
#
#  Compatibility policy for auto-generated shlibs control file.
#
#  * Mandatory : NO
#  * Default   : "="
#
#  Defines compatibility policy for auto-generated shlibs control file.
#  Possible values: "=", ">="
#
#  See https://www.debian.org/doc/debian-policy/ch-sharedlibs.html#s-sharedlibs-shlibdeps
#
# .. variable:: CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA
#               CPACK_DEBIAN_<COMPONENT>_PACKAGE_CONTROL_EXTRA
#
#  This variable allow advanced user to add custom script to the
#  control.tar.gz.
#  Typical usage is for conffiles, postinst, postrm, prerm.
#
#  * Mandatory : NO
#  * Default   : -
#
#  Usage::
#
#   set(CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA
#       "${CMAKE_CURRENT_SOURCE_DIR/prerm;${CMAKE_CURRENT_SOURCE_DIR}/postrm")
#
#  .. note::
#
#    The original permissions of the files will be used in the final
#    package unless the variable
#    :variable:`CPACK_DEBIAN_PACKAGE_CONTROL_STRICT_PERMISSION` is set.
#    In particular, the scripts should have the proper executable
#    flag prior to the generation of the package.
#
# .. variable:: CPACK_DEBIAN_PACKAGE_CONTROL_STRICT_PERMISSION
#               CPACK_DEBIAN_<COMPONENT>_PACKAGE_CONTROL_STRICT_PERMISSION
#
#  This variable indicates if the Debian policy on control files should be
#  strictly followed.
#
#  * Mandatory : NO
#  * Default   : FALSE
#
#  Usage::
#
#   set(CPACK_DEBIAN_PACKAGE_CONTROL_STRICT_PERMISSION TRUE)
#
#  .. note::
#
#    This overrides the permissions on the original files, following the rules
#    set by Debian policy
#    https://www.debian.org/doc/debian-policy/ch-files.html#s-permissions-owners
#
# .. variable:: CPACK_DEBIAN_PACKAGE_SOURCE
#               CPACK_DEBIAN_<COMPONENT>_PACKAGE_SOURCE
#
#  Sets the ``Source`` field of the binary Debian package.
#  When the binary package name is not the same as the source package name
#  (in particular when several components/binaries are generated from one
#  source) the source from which the binary has been generated should be
#  indicated with the field ``Source``.
#
#  * Mandatory : NO
#  * Default   :
#
#    - An empty string for non-component based installations
#    - :variable:`CPACK_DEBIAN_PACKAGE_SOURCE` for component-based
#      installations.
#
#  See https://www.debian.org/doc/debian-policy/ch-controlfields.html#s-f-Source
#
#  .. note::
#
#    This value is not interpreted. It is possible to pass an optional
#    revision number of the referenced source package as well.

# CPack script for creating Debian package
# Author: Mathieu Malaterre
#
# http://wiki.debian.org/HowToPackageForDebian

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

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

function(cpack_deb_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(get_component_package_name var component)
  string(TOUPPER "${component}" component_upcase)
  if(CPACK_DEBIAN_${component_upcase}_PACKAGE_NAME)
    string(TOLOWER "${CPACK_DEBIAN_${component_upcase}_PACKAGE_NAME}" package_name)
  else()
    string(TOLOWER "${CPACK_DEBIAN_PACKAGE_NAME}-${component}" package_name)
  endif()

  set("${var}" "${package_name}" PARENT_SCOPE)
endfunction()

#extract library name and version for given shared object
function(extract_so_info shared_object libname version)
  if(READELF_EXECUTABLE)
    execute_process(COMMAND "${READELF_EXECUTABLE}" -d "${shared_object}"
      WORKING_DIRECTORY "${CPACK_TEMPORARY_DIRECTORY}"
      RESULT_VARIABLE result
      OUTPUT_VARIABLE output
      ERROR_QUIET
      OUTPUT_STRIP_TRAILING_WHITESPACE)
    if(result EQUAL 0)
      string(REGEX MATCH "\\(SONAME\\)[^\n]*\\[([^\n]+)\\.so\\.([^\n]*)\\]" soname "${output}")
      set(${libname} "${CMAKE_MATCH_1}" PARENT_SCOPE)
      set(${version} "${CMAKE_MATCH_2}" PARENT_SCOPE)
    else()
      message(WARNING "Error running readelf for \"${shared_object}\"")
    endif()
  else()
    message(FATAL_ERROR "Readelf utility is not available.")
  endif()
endfunction()

function(cpack_deb_prepare_package_vars)
  # CPACK_DEBIAN_PACKAGE_SHLIBDEPS
  # If specify OFF, only user depends are used
  if(NOT DEFINED CPACK_DEBIAN_PACKAGE_SHLIBDEPS)
    set(CPACK_DEBIAN_PACKAGE_SHLIBDEPS OFF)
  endif()

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

  # per component automatic discover: some of the component might not have
  # binaries.
  if(CPACK_DEB_PACKAGE_COMPONENT)
    string(TOUPPER "${CPACK_DEB_PACKAGE_COMPONENT}" _local_component_name)
    set(_component_shlibdeps_var "CPACK_DEBIAN_${_local_component_name}_PACKAGE_SHLIBDEPS")

    # if set, overrides the global configuration
    if(DEFINED ${_component_shlibdeps_var})
      set(CPACK_DEBIAN_PACKAGE_SHLIBDEPS "${${_component_shlibdeps_var}}")
      if(CPACK_DEBIAN_PACKAGE_DEBUG)
        message("CPackDeb Debug: component '${CPACK_DEB_PACKAGE_COMPONENT}' dpkg-shlibdeps set to ${CPACK_DEBIAN_PACKAGE_SHLIBDEPS}")
      endif()
    endif()
  endif()

  if(CPACK_DEBIAN_PACKAGE_SHLIBDEPS OR CPACK_DEBIAN_PACKAGE_GENERATE_SHLIBS)
    # Generating binary list - Get type of all install files
    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_ LIST_DIRECTORIES false RELATIVE "${WDIR}" "${WDIR}/*")
    cmake_policy(POP)

    # get file info so that we can determine if file is executable or not
    unset(CPACK_DEB_INSTALL_FILES)
    foreach(FILE_ IN LISTS FILE_PATHS_)
      execute_process(COMMAND file "./${FILE_}"
        WORKING_DIRECTORY "${WDIR}"
        OUTPUT_VARIABLE INSTALL_FILE_)
      list(APPEND CPACK_DEB_INSTALL_FILES "${INSTALL_FILE_}")
    endforeach()

    # Only dynamically linked ELF files are included
    # Extract only file name infront of ":"
    foreach(_FILE IN LISTS CPACK_DEB_INSTALL_FILES)
      if(_FILE MATCHES "ELF.*dynamically linked")
        string(REGEX MATCH "(^.*):" _FILE_NAME "${_FILE}")
        list(APPEND CPACK_DEB_BINARY_FILES "${CMAKE_MATCH_1}")
        set(CONTAINS_EXECUTABLE_FILES_ TRUE)
      endif()
      if(_FILE MATCHES "ELF.*shared object")
        string(REGEX MATCH "(^.*):" _FILE_NAME "${_FILE}")
        list(APPEND CPACK_DEB_SHARED_OBJECT_FILES "${CMAKE_MATCH_1}")
      endif()
    endforeach()
  endif()

  if(CPACK_DEBIAN_PACKAGE_SHLIBDEPS)
    # dpkg-shlibdeps is a Debian utility for generating dependency list
    find_program(SHLIBDEPS_EXECUTABLE dpkg-shlibdeps)

    if(SHLIBDEPS_EXECUTABLE)
      # Check version of the dpkg-shlibdeps tool using CPackRPM method
      execute_process(COMMAND env LC_ALL=C ${SHLIBDEPS_EXECUTABLE} --version
        OUTPUT_VARIABLE _TMP_VERSION
        ERROR_QUIET
        OUTPUT_STRIP_TRAILING_WHITESPACE)
      if(_TMP_VERSION MATCHES "dpkg-shlibdeps version ([0-9]+\\.[0-9]+\\.[0-9]+)")
        set(SHLIBDEPS_EXECUTABLE_VERSION "${CMAKE_MATCH_1}")
      else()
        set(SHLIBDEPS_EXECUTABLE_VERSION "")
      endif()

      if(CPACK_DEBIAN_PACKAGE_DEBUG)
        message("CPackDeb Debug: dpkg-shlibdeps --version output is '${_TMP_VERSION}'")
        message("CPackDeb Debug: dpkg-shlibdeps version is <${SHLIBDEPS_EXECUTABLE_VERSION}>")
      endif()

      if(CONTAINS_EXECUTABLE_FILES_)
        message("CPackDeb: - Generating dependency list")

        # Create blank control file for running dpkg-shlibdeps
        # There might be some other way to invoke dpkg-shlibdeps without creating this file
        # but standard debian package should not have anything that can collide with this file or directory
        file(MAKE_DIRECTORY ${CPACK_TEMPORARY_DIRECTORY}/debian)
        file(WRITE ${CPACK_TEMPORARY_DIRECTORY}/debian/control "")

        # Create a DEBIAN directory so that dpkg-shlibdeps can find the package dir when resolving $ORIGIN.
        file(MAKE_DIRECTORY "${CPACK_TEMPORARY_DIRECTORY}/DEBIAN")

        # Add --ignore-missing-info if the tool supports it
        execute_process(COMMAND env LC_ALL=C ${SHLIBDEPS_EXECUTABLE} --help
          OUTPUT_VARIABLE _TMP_HELP
          ERROR_QUIET
          OUTPUT_STRIP_TRAILING_WHITESPACE)
        if(_TMP_HELP MATCHES "--ignore-missing-info")
          set(IGNORE_MISSING_INFO_FLAG "--ignore-missing-info")
        endif()

        # Execute dpkg-shlibdeps
        # --ignore-missing-info : allow dpkg-shlibdeps to run even if some libs do not belong to a package
        # -O : print to STDOUT
        execute_process(COMMAND ${SHLIBDEPS_EXECUTABLE} ${IGNORE_MISSING_INFO_FLAG} -O ${CPACK_DEB_BINARY_FILES}
          WORKING_DIRECTORY "${CPACK_TEMPORARY_DIRECTORY}"
          OUTPUT_VARIABLE SHLIBDEPS_OUTPUT
          RESULT_VARIABLE SHLIBDEPS_RESULT
          ERROR_VARIABLE SHLIBDEPS_ERROR
          OUTPUT_STRIP_TRAILING_WHITESPACE )
        if(CPACK_DEBIAN_PACKAGE_DEBUG)
          # dpkg-shlibdeps will throw some warnings if some input files are not binary
          message( "CPackDeb Debug: dpkg-shlibdeps warnings \n${SHLIBDEPS_ERROR}")
        endif()
        if(NOT SHLIBDEPS_RESULT EQUAL 0)
          message (FATAL_ERROR "CPackDeb: dpkg-shlibdeps: '${SHLIBDEPS_ERROR}';\n"
              "executed command: '${SHLIBDEPS_EXECUTABLE} ${IGNORE_MISSING_INFO_FLAG} -O ${CPACK_DEB_BINARY_FILES}';\n"
              "found files: '${INSTALL_FILE_}';\n"
              "files info: '${CPACK_DEB_INSTALL_FILES}';\n"
              "binary files: '${CPACK_DEB_BINARY_FILES}'")
        endif()

        #Get rid of prefix generated by dpkg-shlibdeps
        string(REGEX REPLACE "^.*Depends=" "" CPACK_DEBIAN_PACKAGE_AUTO_DEPENDS "${SHLIBDEPS_OUTPUT}")

        if(CPACK_DEBIAN_PACKAGE_DEBUG)
          message("CPackDeb Debug: Found dependency: ${CPACK_DEBIAN_PACKAGE_AUTO_DEPENDS} from output ${SHLIBDEPS_OUTPUT}")
        endif()

        # Remove blank control file
        # Might not be safe if package actual contain file or directory named debian
        file(REMOVE_RECURSE "${CPACK_TEMPORARY_DIRECTORY}/debian")

        # remove temporary directory that was created only for dpkg-shlibdeps execution
        file(REMOVE_RECURSE "${CPACK_TEMPORARY_DIRECTORY}/DEBIAN")
      else()
        if(CPACK_DEBIAN_PACKAGE_DEBUG)
          message(AUTHOR_WARNING "CPackDeb Debug: Using only user-provided depends because package does not contain executable files that link to shared libraries.")
        endif()
      endif()
    else()
      message("CPackDeb: Using only user-provided dependencies because dpkg-shlibdeps is not found.")
    endif()

  else()
    if(CPACK_DEBIAN_PACKAGE_DEBUG)
      message("CPackDeb Debug: Using only user-provided dependencies")
    endif()
  endif()

  # Let's define the control file found in debian package:

  # Binary package:
  # http://www.debian.org/doc/debian-policy/ch-controlfields.html#s-binarycontrolfiles

  # DEBIAN/control
  # debian policy enforce lower case for package name
  # Package: (mandatory)
  if(NOT CPACK_DEBIAN_PACKAGE_NAME)
    string(TOLOWER "${CPACK_PACKAGE_NAME}" CPACK_DEBIAN_PACKAGE_NAME)
  endif()

  # Version: (mandatory)
  if(NOT CPACK_DEBIAN_PACKAGE_VERSION)
    if(NOT CPACK_PACKAGE_VERSION)
      message(FATAL_ERROR "CPackDeb: Debian package requires a package version")
    endif()
    set(CPACK_DEBIAN_PACKAGE_VERSION ${CPACK_PACKAGE_VERSION})
  endif()

  # Architecture: (mandatory)
  if(CPACK_DEB_PACKAGE_COMPONENT AND CPACK_DEBIAN_${_local_component_name}_PACKAGE_ARCHITECTURE)
    set(CPACK_DEBIAN_PACKAGE_ARCHITECTURE "${CPACK_DEBIAN_${_local_component_name}_PACKAGE_ARCHITECTURE}")
  elseif(NOT CPACK_DEBIAN_PACKAGE_ARCHITECTURE)
    # There is no such thing as i686 architecture on debian, you should use i386 instead
    # $ dpkg --print-architecture
    find_program(DPKG_CMD dpkg)
    if(NOT DPKG_CMD)
      message(STATUS "CPackDeb: Can not find dpkg in your path, default to i386.")
      set(CPACK_DEBIAN_PACKAGE_ARCHITECTURE i386)
    endif()
    execute_process(COMMAND "${DPKG_CMD}" --print-architecture
      OUTPUT_VARIABLE CPACK_DEBIAN_PACKAGE_ARCHITECTURE
      OUTPUT_STRIP_TRAILING_WHITESPACE
      )
  endif()

  # Source: (optional)
  # in case several packages are constructed from a unique source
  # (multipackaging), the source may be indicated as well.
  # The source might contain a version if the generated package
  # version is different from the source version
  if(NOT CPACK_DEBIAN_PACKAGE_SOURCE)
    set(CPACK_DEBIAN_PACKAGE_SOURCE "")
  endif()

  # have a look at get_property(result GLOBAL PROPERTY ENABLED_FEATURES),
  # this returns the successful find_package() calls, maybe this can help
  # Depends:
  # You should set: DEBIAN_PACKAGE_DEPENDS
  # TODO: automate 'objdump -p | grep NEEDED'

  # if per-component variable, overrides the global CPACK_DEBIAN_PACKAGE_${variable_type_}
  # automatic dependency discovery will be performed afterwards.
  if(CPACK_DEB_PACKAGE_COMPONENT)
    foreach(value_type_ DEPENDS RECOMMENDS SUGGESTS PREDEPENDS ENHANCES BREAKS CONFLICTS PROVIDES REPLACES SOURCE SECTION PRIORITY NAME)
      set(_component_var "CPACK_DEBIAN_${_local_component_name}_PACKAGE_${value_type_}")

      # if set, overrides the global variable
      if(DEFINED ${_component_var})
        set(CPACK_DEBIAN_PACKAGE_${value_type_} "${${_component_var}}")
        if(CPACK_DEBIAN_PACKAGE_DEBUG)
          message("CPackDeb Debug: component '${_local_component_name}' ${value_type_} "
            "value set to '${CPACK_DEBIAN_PACKAGE_${value_type_}}'")
        endif()
      endif()
    endforeach()

    if(CPACK_DEBIAN_ENABLE_COMPONENT_DEPENDS)
      set(COMPONENT_DEPENDS "")
      foreach (_PACK ${CPACK_COMPONENT_${_local_component_name}_DEPENDS})
        get_component_package_name(_PACK_NAME "${_PACK}")
        if(COMPONENT_DEPENDS)
          set(COMPONENT_DEPENDS "${_PACK_NAME} (= ${CPACK_DEBIAN_PACKAGE_VERSION}), ${COMPONENT_DEPENDS}")
        else()
          set(COMPONENT_DEPENDS "${_PACK_NAME} (= ${CPACK_DEBIAN_PACKAGE_VERSION})")
        endif()
      endforeach()
      if(COMPONENT_DEPENDS)
        if(CPACK_DEBIAN_PACKAGE_DEPENDS)
          set(CPACK_DEBIAN_PACKAGE_DEPENDS "${COMPONENT_DEPENDS}, ${CPACK_DEBIAN_PACKAGE_DEPENDS}")
        else()
          set(CPACK_DEBIAN_PACKAGE_DEPENDS "${COMPONENT_DEPENDS}")
        endif()
      endif()
    endif()
  endif()

  # at this point, the CPACK_DEBIAN_PACKAGE_DEPENDS is properly set
  # to the minimal dependency of the package
  # Append automatically discovered dependencies .
  if(NOT "${CPACK_DEBIAN_PACKAGE_AUTO_DEPENDS}" STREQUAL "")
    if (CPACK_DEBIAN_PACKAGE_DEPENDS)
      set (CPACK_DEBIAN_PACKAGE_DEPENDS "${CPACK_DEBIAN_PACKAGE_DEPENDS}, ${CPACK_DEBIAN_PACKAGE_AUTO_DEPENDS}")
    else ()
      set (CPACK_DEBIAN_PACKAGE_DEPENDS "${CPACK_DEBIAN_PACKAGE_AUTO_DEPENDS}")
    endif ()
  endif()

  if(NOT CPACK_DEBIAN_PACKAGE_DEPENDS)
    message(STATUS "CPACK_DEBIAN_PACKAGE_DEPENDS not set, the package will have no dependencies.")
  endif()

  # Maintainer: (mandatory)
  if(NOT CPACK_DEBIAN_PACKAGE_MAINTAINER)
    if(NOT CPACK_PACKAGE_CONTACT)
      message(FATAL_ERROR "CPackDeb: Debian package requires a maintainer for a package, set CPACK_PACKAGE_CONTACT or CPACK_DEBIAN_PACKAGE_MAINTAINER")
    endif()
    set(CPACK_DEBIAN_PACKAGE_MAINTAINER ${CPACK_PACKAGE_CONTACT})
  endif()

  # Description: (mandatory)
  if(NOT CPACK_DEB_PACKAGE_COMPONENT)
    if(NOT CPACK_DEBIAN_PACKAGE_DESCRIPTION)
      if(NOT CPACK_PACKAGE_DESCRIPTION_SUMMARY)
        message(FATAL_ERROR "CPackDeb: Debian package requires a summary for a package, set CPACK_PACKAGE_DESCRIPTION_SUMMARY or CPACK_DEBIAN_PACKAGE_DESCRIPTION")
      endif()
      set(CPACK_DEBIAN_PACKAGE_DESCRIPTION ${CPACK_PACKAGE_DESCRIPTION_SUMMARY})
    endif()
  else()
    set(component_description_var CPACK_COMPONENT_${_local_component_name}_DESCRIPTION)

    # component description overrides package description
    if(${component_description_var})
      set(CPACK_DEBIAN_PACKAGE_DESCRIPTION ${${component_description_var}})
    elseif(NOT CPACK_DEBIAN_PACKAGE_DESCRIPTION)
      if(NOT CPACK_PACKAGE_DESCRIPTION_SUMMARY)
        message(FATAL_ERROR "CPackDeb: Debian package requires a summary for a package, set CPACK_PACKAGE_DESCRIPTION_SUMMARY or CPACK_DEBIAN_PACKAGE_DESCRIPTION or ${component_description_var}")
      endif()
      set(CPACK_DEBIAN_PACKAGE_DESCRIPTION ${CPACK_PACKAGE_DESCRIPTION_SUMMARY})
    endif()
  endif()

  # Section: (recommended)
  if(NOT CPACK_DEBIAN_PACKAGE_SECTION)
    set(CPACK_DEBIAN_PACKAGE_SECTION "devel")
  endif()

  # Priority: (recommended)
  if(NOT CPACK_DEBIAN_PACKAGE_PRIORITY)
    set(CPACK_DEBIAN_PACKAGE_PRIORITY "optional")
  endif()

  if(CPACK_DEBIAN_ARCHIVE_TYPE)
    set(archive_types_ "paxr;gnutar")
    cmake_policy(PUSH)
      cmake_policy(SET CMP0057 NEW)
      if(NOT CPACK_DEBIAN_ARCHIVE_TYPE IN_LIST archive_types_)
        message(FATAL_ERROR "CPACK_DEBIAN_ARCHIVE_TYPE set to unsupported"
          "type ${CPACK_DEBIAN_ARCHIVE_TYPE}")
      endif()
    cmake_policy(POP)
  else()
    set(CPACK_DEBIAN_ARCHIVE_TYPE "paxr")
  endif()

  # Compression: (recommended)
  if(NOT CPACK_DEBIAN_COMPRESSION_TYPE)
    set(CPACK_DEBIAN_COMPRESSION_TYPE "gzip")
  endif()

  # Recommends:
  # You should set: CPACK_DEBIAN_PACKAGE_RECOMMENDS

  # Suggests:
  # You should set: CPACK_DEBIAN_PACKAGE_SUGGESTS

  # CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA
  # This variable allow advanced user to add custom script to the control.tar.gz (inside the .deb archive)
  # Typical examples are:
  # - conffiles
  # - postinst
  # - postrm
  # - prerm
  # Usage:
  # set(CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA
  #    "${CMAKE_CURRENT_SOURCE_DIR/prerm;${CMAKE_CURRENT_SOURCE_DIR}/postrm")

  # Are we packaging components ?
  if(CPACK_DEB_PACKAGE_COMPONENT)
    # override values with per component version if set
    foreach(VAR_NAME_ "PACKAGE_CONTROL_EXTRA" "PACKAGE_CONTROL_STRICT_PERMISSION")
      if(CPACK_DEBIAN_${_local_component_name}_${VAR_NAME_})
        set(CPACK_DEBIAN_${VAR_NAME_} "${CPACK_DEBIAN_${_local_component_name}_${VAR_NAME_}}")
      endif()
    endforeach()
    get_component_package_name(CPACK_DEBIAN_PACKAGE_NAME ${_local_component_name})
  endif()

  set(CPACK_DEBIAN_PACKAGE_SHLIBS_LIST "")

  if (NOT CPACK_DEBIAN_PACKAGE_GENERATE_SHLIBS_POLICY)
    set(CPACK_DEBIAN_PACKAGE_GENERATE_SHLIBS_POLICY "=")
  endif()

  find_program(READELF_EXECUTABLE NAMES readelf)

  if(CPACK_DEBIAN_PACKAGE_GENERATE_SHLIBS)
    if(READELF_EXECUTABLE)
      foreach(_FILE IN LISTS CPACK_DEB_SHARED_OBJECT_FILES)
        extract_so_info("${_FILE}" libname soversion)
        if(libname AND soversion)
          list(APPEND CPACK_DEBIAN_PACKAGE_SHLIBS_LIST
               "${libname} ${soversion} ${CPACK_DEBIAN_PACKAGE_NAME} (${CPACK_DEBIAN_PACKAGE_GENERATE_SHLIBS_POLICY} ${CPACK_PACKAGE_VERSION})")
        else()
          message(AUTHOR_WARNING "Shared library '${_FILE}' is missing soname or soversion. Library will not be added to DEBIAN/shlibs control file.")
        endif()
      endforeach()
      if (CPACK_DEBIAN_PACKAGE_SHLIBS_LIST)
        string(REPLACE ";" "\n" CPACK_DEBIAN_PACKAGE_SHLIBS_LIST "${CPACK_DEBIAN_PACKAGE_SHLIBS_LIST}")
      endif()
    else()
      message(FATAL_ERROR "Readelf utility is not available. CPACK_DEBIAN_PACKAGE_GENERATE_SHLIBS option is not available.")
    endif()
  endif()

  # add ldconfig call in default postrm and postint
  set(CPACK_ADD_LDCONFIG_CALL 0)
  foreach(_FILE ${CPACK_DEB_SHARED_OBJECT_FILES})
    get_filename_component(_DIR ${_FILE} DIRECTORY)
    # all files in CPACK_DEB_SHARED_OBJECT_FILES have dot at the beginning
    if(_DIR STREQUAL "./lib" OR _DIR STREQUAL "./usr/lib")
      set(CPACK_ADD_LDCONFIG_CALL 1)
    endif()
  endforeach()

  if(CPACK_ADD_LDCONFIG_CALL)
    set(CPACK_DEBIAN_GENERATE_POSTINST 1)
    set(CPACK_DEBIAN_GENERATE_POSTRM 1)
    foreach(f ${PACKAGE_CONTROL_EXTRA})
      get_filename_component(n "${f}" NAME)
      if("${n}" STREQUAL "postinst")
        set(CPACK_DEBIAN_GENERATE_POSTINST 0)
      endif()
      if("${n}" STREQUAL "postrm")
        set(CPACK_DEBIAN_GENERATE_POSTRM 0)
      endif()
    endforeach()
  else()
    set(CPACK_DEBIAN_GENERATE_POSTINST 0)
    set(CPACK_DEBIAN_GENERATE_POSTRM 0)
  endif()

  if(NOT CPACK_DEBIAN_PACKAGE_RELEASE)
    set(CPACK_DEBIAN_PACKAGE_RELEASE 1)
  endif()


  cpack_deb_variable_fallback("CPACK_DEBIAN_FILE_NAME"
    "CPACK_DEBIAN_${_local_component_name}_FILE_NAME"
    "CPACK_DEBIAN_FILE_NAME")
  if(CPACK_DEBIAN_FILE_NAME)
    if(CPACK_DEBIAN_FILE_NAME STREQUAL "DEB-DEFAULT")
      # Patch package file name to be in corrent debian format:
      # <foo>_<VersionNumber>-<DebianRevisionNumber>_<DebianArchitecture>.deb
      set(CPACK_OUTPUT_FILE_NAME
        "${CPACK_DEBIAN_PACKAGE_NAME}_${CPACK_PACKAGE_VERSION}-${CPACK_DEBIAN_PACKAGE_RELEASE}_${CPACK_DEBIAN_PACKAGE_ARCHITECTURE}.deb")
    else()
      cmake_policy(PUSH)
        cmake_policy(SET CMP0010 NEW)
        if(NOT CPACK_DEBIAN_FILE_NAME MATCHES ".*\\.deb")
      cmake_policy(POP)
          message(FATAL_ERROR "'${CPACK_DEBIAN_FILE_NAME}' is not a valid DEB package file name as it must end with '.deb'!")
        endif()
      cmake_policy(POP)

      set(CPACK_OUTPUT_FILE_NAME "${CPACK_DEBIAN_FILE_NAME}")
    endif()

    set(CPACK_TEMPORARY_PACKAGE_FILE_NAME "${CPACK_TOPLEVEL_DIRECTORY}/${CPACK_OUTPUT_FILE_NAME}")
    get_filename_component(BINARY_DIR "${CPACK_OUTPUT_FILE_PATH}" DIRECTORY)
    set(CPACK_OUTPUT_FILE_PATH "${BINARY_DIR}/${CPACK_OUTPUT_FILE_NAME}")
  endif() # else() back compatibility - don't change the name

  # Print out some debug information if we were asked for that
  if(CPACK_DEBIAN_PACKAGE_DEBUG)
     message("CPackDeb:Debug: CPACK_TOPLEVEL_DIRECTORY          = '${CPACK_TOPLEVEL_DIRECTORY}'")
     message("CPackDeb:Debug: CPACK_TOPLEVEL_TAG                = '${CPACK_TOPLEVEL_TAG}'")
     message("CPackDeb:Debug: CPACK_TEMPORARY_DIRECTORY         = '${CPACK_TEMPORARY_DIRECTORY}'")
     message("CPackDeb:Debug: CPACK_OUTPUT_FILE_NAME            = '${CPACK_OUTPUT_FILE_NAME}'")
     message("CPackDeb:Debug: CPACK_OUTPUT_FILE_PATH            = '${CPACK_OUTPUT_FILE_PATH}'")
     message("CPackDeb:Debug: CPACK_PACKAGE_FILE_NAME           = '${CPACK_PACKAGE_FILE_NAME}'")
     message("CPackDeb:Debug: CPACK_PACKAGE_INSTALL_DIRECTORY   = '${CPACK_PACKAGE_INSTALL_DIRECTORY}'")
     message("CPackDeb:Debug: CPACK_TEMPORARY_PACKAGE_FILE_NAME = '${CPACK_TEMPORARY_PACKAGE_FILE_NAME}'")
     message("CPackDeb:Debug: CPACK_DEBIAN_PACKAGE_CONTROL_STRICT_PERMISSION = '${CPACK_DEBIAN_PACKAGE_CONTROL_STRICT_PERMISSION}'")
     message("CPackDeb:Debug: CPACK_DEBIAN_PACKAGE_SOURCE       = '${CPACK_DEBIAN_PACKAGE_SOURCE}'")
  endif()

  # For debian source packages:
  # debian/control
  # http://www.debian.org/doc/debian-policy/ch-controlfields.html#s-sourcecontrolfiles

  # .dsc
  # http://www.debian.org/doc/debian-policy/ch-controlfields.html#s-debiansourcecontrolfiles

  # Builds-Depends:
  #if(NOT CPACK_DEBIAN_PACKAGE_BUILDS_DEPENDS)
  #  set(CPACK_DEBIAN_PACKAGE_BUILDS_DEPENDS
  #    "debhelper (>> 5.0.0), libncurses5-dev, tcl8.4"
  #  )
  #endif()

  # move variables to parent scope so that they may be used to create debian package
  set(GEN_CPACK_OUTPUT_FILE_NAME "${CPACK_OUTPUT_FILE_NAME}" PARENT_SCOPE)
  set(GEN_CPACK_TEMPORARY_PACKAGE_FILE_NAME "${CPACK_TEMPORARY_PACKAGE_FILE_NAME}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_NAME "${CPACK_DEBIAN_PACKAGE_NAME}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_VERSION "${CPACK_DEBIAN_PACKAGE_VERSION}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_SECTION "${CPACK_DEBIAN_PACKAGE_SECTION}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_PRIORITY "${CPACK_DEBIAN_PACKAGE_PRIORITY}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_ARCHITECTURE "${CPACK_DEBIAN_PACKAGE_ARCHITECTURE}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_MAINTAINER "${CPACK_DEBIAN_PACKAGE_MAINTAINER}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_DESCRIPTION "${CPACK_DEBIAN_PACKAGE_DESCRIPTION}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_DEPENDS "${CPACK_DEBIAN_PACKAGE_DEPENDS}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_ARCHIVE_TYPE "${CPACK_DEBIAN_ARCHIVE_TYPE}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_COMPRESSION_TYPE "${CPACK_DEBIAN_COMPRESSION_TYPE}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_RECOMMENDS "${CPACK_DEBIAN_PACKAGE_RECOMMENDS}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_SUGGESTS "${CPACK_DEBIAN_PACKAGE_SUGGESTS}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_HOMEPAGE "${CPACK_DEBIAN_PACKAGE_HOMEPAGE}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_PREDEPENDS "${CPACK_DEBIAN_PACKAGE_PREDEPENDS}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_ENHANCES "${CPACK_DEBIAN_PACKAGE_ENHANCES}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_BREAKS "${CPACK_DEBIAN_PACKAGE_BREAKS}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_CONFLICTS "${CPACK_DEBIAN_PACKAGE_CONFLICTS}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_PROVIDES "${CPACK_DEBIAN_PACKAGE_PROVIDES}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_REPLACES "${CPACK_DEBIAN_PACKAGE_REPLACES}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_SHLIBS "${CPACK_DEBIAN_PACKAGE_SHLIBS_LIST}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA "${CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_CONTROL_STRICT_PERMISSION
      "${CPACK_DEBIAN_PACKAGE_CONTROL_STRICT_PERMISSION}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_PACKAGE_SOURCE
     "${CPACK_DEBIAN_PACKAGE_SOURCE}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_GENERATE_POSTINST "${CPACK_DEBIAN_GENERATE_POSTINST}" PARENT_SCOPE)
  set(GEN_CPACK_DEBIAN_GENERATE_POSTRM "${CPACK_DEBIAN_GENERATE_POSTRM}" PARENT_SCOPE)
  set(GEN_WDIR "${WDIR}" PARENT_SCOPE)
endfunction()

cpack_deb_prepare_package_vars()