unofficial mirror of guix-patches@gnu.org 
 help / color / mirror / code / Atom feed
blob e5f3197b0a3779cca432c6bde6aebf3ab5c9d7d2 33980 bytes (raw)
name: guix/build/gnu-build-system.scm 	 # note: path name is non-authoritative(*)

  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
 
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2018 Mark H Weaver <mhw@netris.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (guix build gnu-build-system)
  #:use-module (guix build utils)
  #:use-module (guix build gremlin)
  #:use-module (guix elf)
  #:use-module (ice-9 ftw)
  #:use-module (ice-9 match)
  #:use-module (ice-9 regex)
  #:use-module (ice-9 format)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-19)
  #:use-module (srfi srfi-34)
  #:use-module (srfi srfi-35)
  #:use-module (srfi srfi-26)
  #:use-module (rnrs io ports)
  #:export (%standard-phases
            %license-file-regexp
            dump-file-contents
            gnu-build))

;; Commentary:
;;
;; Standard build procedure for packages using the GNU Build System or
;; something compatible ("./configure && make && make install").  This is the
;; builder-side code.
;;
;; Code:

(cond-expand
  (guile-2.2
   ;; Guile 2.2.2 has a bug whereby 'time-monotonic' objects have seconds and
   ;; nanoseconds swapped (fixed in Guile commit 886ac3e).  Work around it.
   (define time-monotonic time-tai))
  (else #t))

(define* (set-SOURCE-DATE-EPOCH #:rest _)
  "Set the 'SOURCE_DATE_EPOCH' environment variable.  This is used by tools
that incorporate timestamps as a way to tell them to use a fixed timestamp.
See https://reproducible-builds.org/specs/source-date-epoch/."
  (setenv "SOURCE_DATE_EPOCH" "1")
  #t)

(define (first-subdirectory dir)
  "Return the path of the first sub-directory of DIR."
  (file-system-fold (lambda (path stat result)
                      (string=? path dir))
                    (lambda (path stat result) result) ; leaf
                    (lambda (path stat result) result) ; down
                    (lambda (path stat result) result) ; up
                    (lambda (path stat result)         ; skip
                      (or result path))
                    (lambda (path stat errno result)   ; error
                      (error "first-subdirectory" (strerror errno)))
                    #f
                    dir))

(define* (set-paths #:key target inputs native-inputs
                    (search-paths '()) (native-search-paths '())
                    #:allow-other-keys)
  (define input-directories
    (match inputs
      (((_ . dir) ...)
       dir)))

  (define native-input-directories
    (match native-inputs
      (((_ . dir) ...)
       dir)
      (#f                                         ; not cross compiling
       '())))

  ;; Tell 'ld-wrapper' to disallow non-store libraries.
  (setenv "GUIX_LD_WRAPPER_ALLOW_IMPURITIES" "no")

  ;; When cross building, $PATH must refer only to native (host) inputs since
  ;; target inputs are not executable.
  (set-path-environment-variable "PATH" '("bin" "sbin")
                                 (append native-input-directories
                                         (if target
                                             '()
                                             input-directories)))

  (for-each (match-lambda
             ((env-var (files ...) separator type pattern)
              (set-path-environment-variable env-var files
                                             input-directories
                                             #:separator separator
                                             #:type type
                                             #:pattern pattern)))
            search-paths)

  (when native-search-paths
    ;; Search paths for native inputs, when cross building.
    (for-each (match-lambda
               ((env-var (files ...) separator type pattern)
                (set-path-environment-variable env-var files
                                               native-input-directories
                                               #:separator separator
                                               #:type type
                                               #:pattern pattern)))
              native-search-paths))

  #t)

(define* (install-locale #:key
                         (locale "en_US.utf8")
                         (locale-category LC_ALL)
                         #:allow-other-keys)
  "Try to install LOCALE; emit a warning if that fails.  The main goal is to
use a UTF-8 locale so that Guile correctly interprets UTF-8 file names.

This phase must typically happen after 'set-paths' so that $LOCPATH has a
chance to be set."
  (catch 'system-error
    (lambda ()
      (setlocale locale-category locale)

      ;; While we're at it, pass it to sub-processes.
      (setenv (locale-category->string locale-category) locale)

      (format (current-error-port) "using '~a' locale for category ~s~%"
              locale (locale-category->string locale-category))
      #t)
    (lambda args
      ;; This is known to fail for instance in early bootstrap where locales
      ;; are not available.
      (format (current-error-port)
              "warning: failed to install '~a' locale: ~a~%"
              locale (strerror (system-error-errno args)))
      #t)))

(define* (unpack #:key source #:allow-other-keys)
  "Unpack SOURCE in the working directory, and change directory within the
source.  When SOURCE is a directory, copy it in a sub-directory of the current
working directory."
  (if (file-is-directory? source)
      (begin
        (mkdir "source")
        (chdir "source")

        ;; Preserve timestamps (set to the Epoch) on the copied tree so that
        ;; things work deterministically.
        (copy-recursively source "."
                          #:keep-mtime? #t))
      (begin
        (if (string-suffix? ".zip" source)
            (invoke "unzip" source)
            (invoke "tar" "xvf" source))
        (chdir (first-subdirectory "."))))
  #t)

(define %bootstrap-scripts
  ;; Typical names of Autotools "bootstrap" scripts.
  '("bootstrap" "bootstrap.sh" "autogen.sh"))

(define* (bootstrap #:key (bootstrap-scripts %bootstrap-scripts)
                    #:allow-other-keys)
  "If the code uses Autotools and \"configure\" is missing, run
\"autoreconf\".  Otherwise do nothing."
  ;; Note: Run that right after 'unpack' so that the generated files are
  ;; visible when the 'patch-source-shebangs' phase runs.
  (if (not (file-exists? "configure"))

      ;; First try one of the BOOTSTRAP-SCRIPTS.  If none exists, and it's
      ;; clearly an Autoconf-based project, run 'autoreconf'.  Otherwise, do
      ;; nothing (perhaps the user removed or overrode the 'configure' phase.)
      (let ((script (find file-exists? bootstrap-scripts)))
        ;; GNU packages often invoke the 'git-version-gen' script from
        ;; 'configure.ac' so make sure it has a valid shebang.
        (false-if-file-not-found
         (patch-shebang "build-aux/git-version-gen"))

        (if script
            (let ((script (string-append "./" script)))
              (format #t "running '~a'~%" script)
              (if (executable-file? script)
                  (begin
                    (patch-shebang script)
                    (invoke script))
                  (invoke "sh" script)))
            (if (or (file-exists? "configure.ac")
                    (file-exists? "configure.in"))
                (invoke "autoreconf" "-vif")
                (format #t "no 'configure.ac' or anything like that, \
doing nothing~%"))))
      (format #t "GNU build system bootstrapping not needed~%"))
  #t)

;; See <http://bugs.gnu.org/17840>.
(define* (patch-usr-bin-file #:key native-inputs inputs
                             (patch-/usr/bin/file? #t)
                             #:allow-other-keys)
  "Patch occurrences of \"/usr/bin/file\" in all the executable 'configure'
files found in the source tree.  This works around Libtool's Autoconf macros,
which generates invocations of \"/usr/bin/file\" that are used to determine
things like the ABI being used."
  (when patch-/usr/bin/file?
    (for-each (lambda (file)
                (when (executable-file? file)
                  (patch-/usr/bin/file file)))
              (find-files "." "^configure$")))
  #t)

(define* (patch-source-shebangs #:key source #:allow-other-keys)
  "Patch shebangs in all source files; this includes non-executable
files such as `.in' templates.  Most scripts honor $SHELL and
$CONFIG_SHELL, but some don't, such as `mkinstalldirs' or Automake's
`missing' script."
  (for-each patch-shebang
            (find-files "."
                        (lambda (file stat)
                          ;; Filter out symlinks.
                          (eq? 'regular (stat:type stat)))
                        #:stat lstat))
  #t)

(define (patch-generated-file-shebangs . rest)
  "Patch shebangs in generated files, including `SHELL' variables in
makefiles."
  ;; Patch executable regular files, some of which might have been generated
  ;; by `configure'.
  (for-each patch-shebang
            (find-files "."
                        (lambda (file stat)
                          (and (eq? 'regular (stat:type stat))
                               (not (zero? (logand (stat:mode stat) #o100)))))
                        #:stat lstat))

  ;; Patch `SHELL' in generated makefiles.
  (for-each patch-makefile-SHELL (find-files "." "^(GNU)?[mM]akefile$"))

  #t)

(define* (configure #:key build target native-inputs inputs outputs
                    (configure-flags '()) out-of-source?
                    #:allow-other-keys)
  (define (package-name)
    (let* ((out  (assoc-ref outputs "out"))
           (base (basename out))
           (dash (string-rindex base #\-)))
      ;; XXX: We'd rather use `package-name->name+version' or similar.
      (string-drop (if dash
                       (substring base 0 dash)
                       base)
                   (+ 1 (string-index base #\-)))))

  (let* ((prefix     (assoc-ref outputs "out"))
         (bindir     (assoc-ref outputs "bin"))
         (libdir     (assoc-ref outputs "lib"))
         (includedir (assoc-ref outputs "include"))
         (docdir     (assoc-ref outputs "doc"))
         (bash       (or (and=> (assoc-ref (or native-inputs inputs) "bash")
                                (cut string-append <> "/bin/bash"))
                         "/bin/sh"))
         (flags      `(,@(if target             ; cross building
                             '("CC_FOR_BUILD=gcc")
                             '())
                       ,(string-append "CONFIG_SHELL=" bash)
                       ,(string-append "SHELL=" bash)
                       ,(string-append "--prefix=" prefix)
                       "--enable-fast-install"    ; when using Libtool

                       ;; Produce multiple outputs when specific output names
                       ;; are recognized.
                       ,@(if bindir
                              (list (string-append "--bindir=" bindir "/bin"))
                              '())
                       ,@(if libdir
                              (cons (string-append "--libdir=" libdir "/lib")
                                    (if includedir
                                        '()
                                        (list
                                         (string-append "--includedir="
                                                        libdir "/include"))))
                              '())
                       ,@(if includedir
                             (list (string-append "--includedir="
                                                  includedir "/include"))
                             '())
                       ,@(if docdir
                             (list (string-append "--docdir=" docdir
                                                  "/share/doc/" (package-name)))
                             '())
                       ,@(if build
                             (list (string-append "--build=" build))
                             '())
                       ,@(if target               ; cross building
                             (list (string-append "--host=" target))
                             '())
                       ,@configure-flags))
         (abs-srcdir (getcwd))
         (srcdir     (if out-of-source?
                         (string-append "../" (basename abs-srcdir))
                         ".")))
    (format #t "source directory: ~s (relative from build: ~s)~%"
            abs-srcdir srcdir)
    (if out-of-source?
        (begin
          (mkdir "../build")
          (chdir "../build")))
    (format #t "build directory: ~s~%" (getcwd))
    (format #t "configure flags: ~s~%" flags)

    ;; Use BASH to reduce reliance on /bin/sh since it may not always be
    ;; reliable (see
    ;; <http://thread.gmane.org/gmane.linux.distributions.nixos/9748>
    ;; for a summary of the situation.)
    ;;
    ;; Call `configure' with a relative path.  Otherwise, GCC's build system
    ;; (for instance) records absolute source file names, which typically
    ;; contain the hash part of the `.drv' file, leading to a reference leak.
    (apply invoke bash
           (string-append srcdir "/configure")
           flags)))

(define* (build #:key (make-flags '()) (parallel-build? #t)
                #:allow-other-keys)
  (apply invoke "make"
         `(,@(if parallel-build?
                 `("-j" ,(number->string (parallel-job-count)))
                 '())
           ,@make-flags)))

(define* (dump-file-contents directory file-regexp
                             #:optional (port (current-error-port)))
  "Dump to PORT the contents of files in DIRECTORY that match FILE-REGEXP."
  (define (dump file)
    (let ((prefix (string-append "\n--- " file " ")))
      (display (if (< (string-length prefix) 78)
                   (string-pad-right prefix 78 #\-)
                   prefix)
               port)
      (display "\n\n" port)
      (call-with-input-file file
        (lambda (log)
          (dump-port log port)))
      (display "\n" port)))

  (for-each dump (find-files directory file-regexp)))

(define %test-suite-log-regexp
  ;; Name of test suite log files as commonly found in GNU-based build systems
  ;; and CMake.
  "^(test-?suite\\.log|LastTestFailed\\.log)$")

(define* (check #:key target (make-flags '()) (tests? (not target))
                (test-target "check") (parallel-tests? #t)
                (test-suite-log-regexp %test-suite-log-regexp)
                #:allow-other-keys)
  (if tests?
      (guard (c ((invoke-error? c)
                 ;; Dump the test suite log to facilitate debugging.
                 (display "\nTest suite failed, dumping logs.\n"
                          (current-error-port))
                 (dump-file-contents "." test-suite-log-regexp)
                 (raise c)))
        (apply invoke "make" test-target
               `(,@(if parallel-tests?
                       `("-j" ,(number->string (parallel-job-count)))
                       '())
                 ,@make-flags)))
      (format #t "test suite not run~%"))
  #t)

(define* (install #:key (make-flags '()) #:allow-other-keys)
  (apply invoke "make" "install" make-flags))

(define* (patch-shebangs #:key inputs outputs (patch-shebangs? #t)
                         #:allow-other-keys)
  (define (list-of-files dir)
    (map (cut string-append dir "/" <>)
         (or (scandir dir (lambda (f)
                            (let ((s (lstat (string-append dir "/" f))))
                              (eq? 'regular (stat:type s)))))
             '())))

  (define bin-directories
    (match-lambda
     ((_ . dir)
      (list (string-append dir "/bin")
            (string-append dir "/sbin")))))

  (define output-bindirs
    (append-map bin-directories outputs))

  (define input-bindirs
    ;; Shebangs should refer to binaries of the target system---i.e., from
    ;; "inputs", not from "native-inputs".
    (append-map bin-directories inputs))

  (when patch-shebangs?
    (let ((path (append output-bindirs input-bindirs)))
      (for-each (lambda (dir)
                  (let ((files (list-of-files dir)))
                    (for-each (cut patch-shebang <> path) files)))
                output-bindirs)))
  #t)

(define* (strip #:key target outputs (strip-binaries? #t)
                (strip-command (if target
                                   (string-append target "-strip")
                                   "strip"))
                (objcopy-command (if target
                                     (string-append target "-objcopy")
                                     "objcopy"))
                (strip-flags '("--strip-debug"
                               "--enable-deterministic-archives"))
                (strip-directories '("lib" "lib64" "libexec"
                                     "bin" "sbin"))
                #:allow-other-keys)
  (define debug-output
    ;; If an output is called "debug", then that's where debugging information
    ;; will be stored instead of being discarded.
    (assoc-ref outputs "debug"))

  (define debug-file-extension
    ;; File name extension for debugging information.
    ".debug")

  (define (debug-file file)
    ;; Return the name of the debug file for FILE, an absolute file name.
    ;; Once installed in the user's profile, it is in $PROFILE/lib/debug/FILE,
    ;; which is where GDB looks for it (info "(gdb) Separate Debug Files").
    (string-append debug-output "/lib/debug/"
                   file debug-file-extension))

  (define (make-debug-file file)
    ;; Create a file in DEBUG-OUTPUT containing the debugging info of FILE.
    (let ((debug (debug-file file)))
      (mkdir-p (dirname debug))
      (copy-file file debug)
      (invoke strip-command "--only-keep-debug" debug)
      (chmod debug #o400)))

  (define (add-debug-link file)
    ;; Add a debug link in FILE (info "(binutils) strip").

    ;; `objcopy --add-gnu-debuglink' wants to have the target of the debug
    ;; link around so it can compute a CRC of that file (see the
    ;; `bfd_fill_in_gnu_debuglink_section' function.)  No reference to
    ;; DEBUG-OUTPUT is kept because bfd keeps only the basename of the debug
    ;; file.
    (invoke objcopy-command "--enable-deterministic-archives"
            (string-append "--add-gnu-debuglink="
                           (debug-file file))
            file))

  (define (strip-dir dir)
    (format #t "stripping binaries in ~s with ~s and flags ~s~%"
            dir strip-command strip-flags)
    (when debug-output
      (format #t "debugging output written to ~s using ~s~%"
              debug-output objcopy-command))

    (for-each (lambda (file)
                (when (or (elf-file? file) (ar-file? file))
                  ;; If an error occurs while processing a file, issue a
                  ;; warning and continue to the next file.
                  (guard (c ((invoke-error? c)
                             (format (current-error-port)
                                     "warning: ~a: program ~s exited\
~@[ with non-zero exit status ~a~]\
~@[ terminated by signal ~a~]~%"
                                     file
                                     (invoke-error-program c)
                                     (invoke-error-exit-status c)
                                     (invoke-error-term-signal c))))
                    (when debug-output
                      (make-debug-file file))

                    ;; Ensure the file is writable.
                    (make-file-writable file)

                    (apply invoke strip-command
                           (append strip-flags (list file)))

                    (when debug-output
                      (add-debug-link file)))))
              (find-files dir
                          (lambda (file stat)
                            ;; Ignore symlinks such as:
                            ;; libfoo.so -> libfoo.so.0.0.
                            (eq? 'regular (stat:type stat)))
                          #:stat lstat)))

  (when strip-binaries?
    (for-each
     strip-dir
     (append-map (match-lambda
                   ((_ . dir)
                    (filter-map (lambda (d)
                                  (let ((sub (string-append dir "/" d)))
                                    (and (directory-exists? sub) sub)))
                                strip-directories)))
                 outputs)))
  #t)

(define* (validate-runpath #:key
                           (validate-runpath? #t)
                           (elf-directories '("lib" "lib64" "libexec"
                                              "bin" "sbin"))
                           outputs #:allow-other-keys)
  "When VALIDATE-RUNPATH? is true, validate that all the ELF files in
ELF-DIRECTORIES have their dependencies found in their 'RUNPATH'.

Since the ELF parser needs to have a copy of files in memory, better run this
phase after stripping."
  (define (sub-directory parent)
    (lambda (directory)
      (let ((directory (string-append parent "/" directory)))
        (and (directory-exists? directory) directory))))

  (define (validate directory)
    (define (file=? file1 file2)
      (let ((st1 (stat file1))
            (st2 (stat file2)))
        (= (stat:ino st1) (stat:ino st2))))

    ;; There are always symlinks from '.so' to '.so.1' and so on, so delete
    ;; duplicates.
    (let ((files (delete-duplicates (find-files directory (lambda (file stat)
                                                            (elf-file? file)))
                                    file=?)))
      (format (current-error-port)
              "validating RUNPATH of ~a binaries in ~s...~%"
              (length files) directory)
      (every* validate-needed-in-runpath files)))

  (if validate-runpath?
      (let ((dirs (append-map (match-lambda
                                (("debug" . _)
                                 ;; The "debug" output is full of ELF files
                                 ;; that are not worth checking.
                                 '())
                                ((name . output)
                                 (filter-map (sub-directory output)
                                             elf-directories)))
                              outputs)))
        (unless (every* validate dirs)
          (error "RUNPATH validation failed")))
      (format (current-error-port) "skipping RUNPATH validation~%"))

  #t)

(define* (validate-documentation-location #:key outputs
                                          #:allow-other-keys)
  "Documentation should go to 'share/info' and 'share/man', not just 'info/'
and 'man/'.  This phase moves directories to the right place if needed."
  (define (validate-sub-directory output sub-directory)
    (let ((directory (string-append output "/" sub-directory)))
      (when (directory-exists? directory)
        (let ((target (string-append output "/share/" sub-directory)))
          (format #t "moving '~a' to '~a'~%" directory target)
          (mkdir-p (dirname target))
          (rename-file directory target)))))

  (define (validate-output output)
    (for-each (cut validate-sub-directory output <>)
              '("man" "info")))

  (match outputs
    (((names . directories) ...)
     (for-each validate-output directories)))
  #t)

(define* (reset-gzip-timestamps #:key outputs #:allow-other-keys)
  "Reset embedded timestamps in gzip files found in OUTPUTS."
  (define (process-directory directory)
    (let ((files (find-files directory
                             (lambda (file stat)
                               (and (eq? 'regular (stat:type stat))
                                    (or (string-suffix? ".gz" file)
                                        (string-suffix? ".tgz" file))
                                    (gzip-file? file)))
                             #:stat lstat)))
      (for-each reset-gzip-timestamp files)))

  (match outputs
    (((names . directories) ...)
     (for-each process-directory directories)))
  #t)

(define* (compress-documentation #:key outputs
                                 (compress-documentation? #t)
                                 (documentation-compressor "gzip")
                                 (documentation-compressor-flags
                                  '("--best" "--no-name"))
                                 (compressed-documentation-extension ".gz")
                                 #:allow-other-keys)
  "When COMPRESS-DOCUMENTATION? is true, compress man pages and Info files
found in OUTPUTS using DOCUMENTATION-COMPRESSOR, called with
DOCUMENTATION-COMPRESSOR-FLAGS."
  (define (retarget-symlink link)
    (let ((target (readlink link)))
      (delete-file link)
      (symlink (string-append target compressed-documentation-extension)
               link)))

  (define (has-links? file)
    ;; Return #t if FILE has hard links.
    (> (stat:nlink (lstat file)) 1))

  (define (points-to-symlink? symlink)
    ;; Return #t if SYMLINK points to another symbolic link.
    (let* ((target (readlink symlink))
           (target-absolute (if (string-prefix? "/" target)
                                target
                                (string-append (dirname symlink)
                                               "/" target))))
      (catch 'system-error
        (lambda ()
          (symbolic-link? target-absolute))
        (lambda args
          (if (= ENOENT (system-error-errno args))
              (begin
                (format (current-error-port)
                        "The symbolic link '~a' target is missing: '~a'\n"
                        symlink target-absolute)
                #f)
              (apply throw args))))))

  (define (maybe-compress-directory directory regexp)
    (when (directory-exists? directory)
      (match (find-files directory regexp)
        (()                                     ;nothing to compress
         #t)
        ((files ...)                            ;one or more files
         (format #t
                 "compressing documentation in '~a' with ~s and flags ~s~%"
                 directory documentation-compressor
                 documentation-compressor-flags)
         (call-with-values
             (lambda ()
               (partition symbolic-link? files))
           (lambda (symlinks regular-files)
             ;; Compress the non-symlink files, and adjust symlinks to refer
             ;; to the compressed files.  Leave files that have hard links
             ;; unchanged ('gzip' would refuse to compress them anyway.)
             ;; Also, do not retarget symbolic links pointing to other
             ;; symbolic links, since these are not compressed.
             (for-each retarget-symlink
                       (filter (lambda (symlink)
                                 (and (not (points-to-symlink? symlink))
                                      (string-match regexp symlink)))
                               symlinks))
             (apply invoke documentation-compressor
                    (append documentation-compressor-flags
                            (remove has-links? regular-files)))))))))

  (define (maybe-compress output)
    (maybe-compress-directory (string-append output "/share/man")
                              "\\.[0-9]+$")
    (maybe-compress-directory (string-append output "/share/info")
                              "\\.info(-[0-9]+)?$"))

  (if compress-documentation?
      (match outputs
        (((names . directories) ...)
         (for-each maybe-compress directories)))
      (format #t "not compressing documentation~%"))
  #t)

(define* (delete-info-dir-file #:key outputs #:allow-other-keys)
  "Delete any 'share/info/dir' file from OUTPUTS."
  (for-each (match-lambda
          ((output . directory)
           (let ((info-dir-file (string-append directory "/share/info/dir")))
             (when (file-exists? info-dir-file)
               (delete-file info-dir-file)))))
            outputs)
  #t)


(define* (patch-dot-desktop-files #:key outputs inputs #:allow-other-keys)
  "Replace any references to executables in '.desktop' files with their
absolute file names."
  (define bin-directories
    (append-map (match-lambda
                  ((_ . directory)
                   (list (string-append directory "/bin")
                         (string-append directory "/sbin"))))
                outputs))

  (define (which program)
    (or (search-path bin-directories program)
        (begin
          (format (current-error-port)
                  "warning: '.desktop' file refers to '~a', \
which cannot be found~%"
                  program)
          program)))

  (for-each (match-lambda
              ((_ . directory)
               (let ((applications (string-append directory
                                                  "/share/applications")))
                 (when (directory-exists? applications)
                   (let ((files (find-files applications "\\.desktop$")))
                     (format #t "adjusting ~a '.desktop' files in ~s~%"
                             (length files) applications)

                     ;; '.desktop' files contain translations and are always
                     ;; UTF-8-encoded.
                     (with-fluids ((%default-port-encoding "UTF-8"))
                       (substitute* files
                         (("^Exec=([^/[:blank:]\r\n]*)(.*)$" _ binary rest)
                          (string-append "Exec=" (which binary) rest))
                         (("^TryExec=([^/[:blank:]\r\n]*)(.*)$" _ binary rest)
                          (string-append "TryExec="
                                         (which binary) rest)))))))))
            outputs)
  #t)

(define %license-file-regexp
  ;; Regexp matching license files.
  "^(COPYING.*|LICEN[CS]E.*|[Ll]icen[cs]e.*|Copy[Rr]ight(\\.(txt|md))?)$")

(define* (install-license-files #:key outputs
                                (license-file-regexp %license-file-regexp)
                                #:allow-other-keys)
  "Install license files matching LICENSE-FILE-REGEXP to 'share/doc'."
  (let* ((regexp    (make-regexp license-file-regexp))
         (out       (or (assoc-ref outputs "out")
                        (match outputs
                          (((_ . output) _ ...)
                           output))))
         (package   (strip-store-file-name out))
         (directory (string-append out "/share/doc/" package))
         (files     (scandir "." (lambda (file)
                                   (regexp-exec regexp file)))))
    (format #t "installing ~a license files~%" (length files))
    (for-each (lambda (file)
                (if (file-is-directory? file)
                    (copy-recursively file directory)
                    (install-file file directory)))
              files)
    #t))

(define %standard-phases
  ;; Standard build phases, as a list of symbol/procedure pairs.
  (let-syntax ((phases (syntax-rules ()
                         ((_ p ...) `((p . ,p) ...)))))
    (phases set-SOURCE-DATE-EPOCH set-paths install-locale unpack
            bootstrap
            patch-usr-bin-file
            patch-source-shebangs configure patch-generated-file-shebangs
            build check install
            patch-shebangs strip
            validate-runpath
            validate-documentation-location
            delete-info-dir-file
            patch-dot-desktop-files
            install-license-files
            reset-gzip-timestamps
            compress-documentation)))

\f
(define* (gnu-build #:key (source #f) (outputs #f) (inputs #f)
                    (phases %standard-phases)
                    #:allow-other-keys
                    #:rest args)
  "Build from SOURCE to OUTPUTS, using INPUTS, and by running all of PHASES
in order.  Return #t if all the PHASES succeeded, #f otherwise."
  (define (elapsed-time end start)
    (let ((diff (time-difference end start)))
      (+ (time-second diff)
         (/ (time-nanosecond diff) 1e9))))

  (setvbuf (current-output-port) _IOLBF)
  (setvbuf (current-error-port) _IOLBF)

  ;; Encoding/decoding errors shouldn't be silent.
  (fluid-set! %default-port-conversion-strategy 'error)

  ;; The trick is to #:allow-other-keys everywhere, so that each procedure in
  ;; PHASES can pick the keyword arguments it's interested in.
  (every (match-lambda
           ((name . proc)
            (let ((start (current-time time-monotonic)))
              (format #t "starting phase `~a'~%" name)
              (let ((result (apply proc args))
                    (end    (current-time time-monotonic)))
                (format #t "phase `~a' ~:[failed~;succeeded~] after ~,1f seconds~%"
                        name result
                        (elapsed-time end start))

                ;; Issue a warning unless the result is #t.
                (unless (eqv? result #t)
                  (format (current-error-port) "\
## WARNING: phase `~a' returned `~s'.  Return values other than #t
## are deprecated.  Please migrate this package so that its phase
## procedures report errors by raising an exception, and otherwise
## always return #t.~%"
                          name result))

                ;; Dump the environment variables as a shell script, for handy debugging.
                (system "export > $NIX_BUILD_TOP/environment-variables")
                result))))
         phases))

debug log:

solving e5f3197b0 ...
found e5f3197b0 in https://git.savannah.gnu.org/cgit/guix.git

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/guix.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).