blog/Creating__updating_and_checking_debian_copyright_semi_automatically.html

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   6     <title>Petter Reinholdtsen: Creating, updating and checking debian/copyright semi-automatically</title>
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  14  <h1>
  15      <a href="http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  16
  17  </h1>
  18
  19 </div>
  20
  21
  22     <div class="entry">
  23       <div class="title">Creating, updating and checking debian/copyright semi-automatically</div>
  24       <div class="date">19th February 2016</div>
  25       <div class="body"><p>Making packages for Debian requires quite a lot of attention to
  26 details.  And one of the details is the content of the
  27 debian/copyright file, which should list all relevant licenses used by
  28 the code in the package in question, preferably in
  29 <a href="https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/">machine
  30 readable DEP5 format</a>.</p>
  31
  32 <p>For large packages with lots of contributors it is hard to write
  33 and update this file manually, and if you get some detail wrong, the
  34 package is normally rejected by the ftpmasters.  So getting it right
  35 the first time around get the package into Debian faster, and save
  36 both you and the ftpmasters some work..  Today, while trying to figure
  37 out what was wrong with
  38 <a href="https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=686447">the
  39 zfsonlinux copyright file</a>, I decided to spend some time on
  40 figuring out the options for doing this job automatically, or at least
  41 semi-automatically.</p>
  42
  43 <p>Lucikly, there are at least two tools available for generating the
  44 file based on the code in the source package,
  45 <tt><a href="https://tracker.debian.org/pkg/debmake">debmake</a></tt>
  46 and <tt><a href="https://tracker.debian.org/pkg/cme">cme</a></tt>.  I'm
  47 not sure which one of them came first, but both seem to be able to
  48 create a sensible draft file.  As far as I can tell, none of them can
  49 be trusted to get the result just right, so the content need to be
  50 polished a bit before the file is OK to upload.  I found the debmake
  51 option in
  52 <a href="http://goofying-with-debian.blogspot.com/2014/07/debmake-checking-source-against-dep-5.html">a
  53 blog posts from 2014</a>.
  54
  55 <p>To generate using debmake, use the -cc option:
  56
  57 <p><pre>
  58 debmake -cc > debian/copyright
  59 </pre></p>
  60
  61 <p>Note there are some problems with python and non-ASCII names, so
  62 this might not be the best option.</p>
  63
  64 <p>The cme option is based on a config parsing library, and I found
  65 this approach in
  66 <a href="https://ddumont.wordpress.com/2015/04/05/improving-creation-of-debian-copyright-file/">a
  67 blog post from 2015</a>.  To generate using cme, use the 'update
  68 dpkg-copyright' option:
  69
  70 <p><pre>
  71 cme update dpkg-copyright
  72 </pre></p>
  73
  74 <p>This will create or update debian/copyright.  The cme tool seem to
  75 handle UTF-8 names better than debmake.</p>
  76
  77 <p>When the copyright file is created, I would also like some help to
  78 check if the file is correct.  For this I found two good options,
  79 <tt>debmake -k</tt> and <tt>license-reconcile</tt>.  The former seem
  80 to focus on license types and file matching, and is able to detect
  81 ineffective blocks in the copyright file.  The latter reports missing
  82 copyright holders and years, but was confused by inconsistent license
  83 names (like CDDL vs. CDDL-1.0).  I suspect it is good to use both and
  84 fix all issues reported by them before uploading.  But I do not know
  85 if the tools and the ftpmasters agree on what is important to fix in a
  86 copyright file, so the package might still be rejected.</p>
  87
  88 <p>The devscripts tool <tt>licensecheck</tt> deserve mentioning.  It
  89 will read through the source and try to find all copyright statements.
  90 It is not comparing the result to the content of debian/copyright, but
  91 can be useful when verifying the content of the copyright file.</p>
  92
  93 <p>Are you aware of better tools in Debian to create and update
  94 debian/copyright file.  Please let me know, or blog about it on
  95 planet.debian.org.</p>
  96
  97 <p>As usual, if you use Bitcoin and want to show your support of my
  98 activities, please send Bitcoin donations to my address
  99 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
 100
 101 <p><strong>Update 2016-02-20</strong>: I got a tip from Mike Gabriel
 102 on how to use licensecheck and cdbs to create a draft copyright file
 103
 104 <p><pre>
 105 licensecheck --copyright -r `find * -type f` | \
 106   /usr/lib/cdbs/licensecheck2dep5 > debian/copyright.auto
 107 </pre></p>
 108
 109 <p>He mentioned that he normally check the generated file into the
 110 version control system to make it easier to discover license and
 111 copyright changes in the upstream source.  I will try to do the same
 112 with my packages in the future.</p>
 113
 114 <p><strong>Update 2016-02-21</strong>: The cme author recommended
 115 against using -quiet for new users, so I removed it from the proposed
 116 command line.</p>
 117 </div>
 118
 119       <div class="tags">Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.</div>
 120
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 122     </div>
 123
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 127     <div id="sidebar">
 128
 129
 130
 131 <h2>Archive</h2>
 132 <ul>
 133
 134 <li>2019
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 152
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 173
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 175
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 177
 178 </ul></li>
 179
 180 <li>2017
 181 <ul>
 182
 183 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/01/">January (4)</a></li>
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 190
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 192
 193 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/07/">July (1)</a></li>
 194
 195 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/08/">August (1)</a></li>
 196
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 198
 199 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/10/">October (5)</a></li>
 200
 201 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/11/">November (3)</a></li>
 202
 203 <li><a href="http://people.skolelinux.org/pere/blog/archive/2017/12/">December (4)</a></li>
 204
 205 </ul></li>
 206
 207 <li>2016
 208 <ul>
 209
 210 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 211
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 213
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 217
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 219
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 221
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 223
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 225
 226 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/09/">September (2)</a></li>
 227
 228 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/10/">October (3)</a></li>
 229
 230 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/11/">November (8)</a></li>
 231
 232 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/12/">December (5)</a></li>
 233
 234 </ul></li>
 235
 236 <li>2015
 237 <ul>
 238
 239 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 240
 241 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 242
 243 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
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 252
 253 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/08/">August (2)</a></li>
 254
 255 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 256
 257 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 258
 259 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 260
 261 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 262
 263 </ul></li>
 264
 265 <li>2014
 266 <ul>
 267
 268 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 269
 270 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 271
 272 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 273
 274 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 275
 276 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 277
 278 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 279
 280 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 281
 282 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 283
 284 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
 285
 286 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 287
 288 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 289
 290 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 291
 292 </ul></li>
 293
 294 <li>2013
 295 <ul>
 296
 297 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 298
 299 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 300
 301 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 302
 303 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 304
 305 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 306
 307 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 308
 309 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 310
 311 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 312
 313 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 314
 315 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 316
 317 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 318
 319 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 320
 321 </ul></li>
 322
 323 <li>2012
 324 <ul>
 325
 326 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 327
 328 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 329
 330 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 331
 332 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 333
 334 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 335
 336 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 337
 338 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 339
 340 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 341
 342 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 343
 344 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 345
 346 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 347
 348 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 349
 350 </ul></li>
 351
 352 <li>2011
 353 <ul>
 354
 355 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
 356
 357 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
 358
 359 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
 360
 361 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
 362
 363 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
 364
 365 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
 366
 367 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
 368
 369 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
 370
 371 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
 372
 373 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
 374
 375 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
 376
 377 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
 378
 379 </ul></li>
 380
 381 <li>2010
 382 <ul>
 383
 384 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
 385
 386 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
 387
 388 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
 389
 390 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
 391
 392 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
 393
 394 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
 395
 396 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
 397
 398 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
 399
 400 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
 401
 402 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
 403
 404 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
 405
 406 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
 407
 408 </ul></li>
 409
 410 <li>2009
 411 <ul>
 412
 413 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 414
 415 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
 416
 417 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
 418
 419 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
 420
 421 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
 422
 423 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
 424
 425 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
 426
 427 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
 428
 429 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
 430
 431 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
 432
 433 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
 434
 435 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
 436
 437 </ul></li>
 438
 439 <li>2008
 440 <ul>
 441
 442 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
 443
 444 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
 445
 446 </ul></li>
 447
 448 </ul>
 449
 450
 451
 452 <h2>Tags</h2>
 453 <ul>
 454
 455  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (16)</a></li>
 456
 457  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
 458
 459  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
 460
 461  <li><a href="http://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
 462
 463  <li><a href="http://people.skolelinux.org/pere/blog/tags/betalkontant">betalkontant (8)</a></li>
 464
 465  <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (11)</a></li>
 466
 467  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (17)</a></li>
 468
 469  <li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
 470
 471  <li><a href="http://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
 472
 473  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (168)</a></li>
 474
 475  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (158)</a></li>
 476
 477  <li><a href="http://people.skolelinux.org/pere/blog/tags/debian-handbook">debian-handbook (4)</a></li>
 478
 479  <li><a href="http://people.skolelinux.org/pere/blog/tags/digistan">digistan (11)</a></li>
 480
 481  <li><a href="http://people.skolelinux.org/pere/blog/tags/dld">dld (17)</a></li>
 482
 483  <li><a href="http://people.skolelinux.org/pere/blog/tags/docbook">docbook (26)</a></li>
 484
 485  <li><a href="http://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
 486
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 586     </div>
 587     <p style="text-align: right">
 588  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
 589 </p>
 590
 591   </body>
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