summaryrefslogtreecommitdiff
path: root/guix/build-system/linux-module.scm
blob: e82a9ca65c0d718c1c3275a4b31aaae7985338b8 (about) (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
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2019 Danny Milosavljevic <dannym@scratchpost.org>
;;; Copyright © 2020 Mathieu Othacehe <m.othacehe@gmail.com>
;;; Copyright © 2021 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2021 Tobias Geerinckx-Rice <me@tobias.gr>
;;;
;;; 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-system linux-module)
  #:use-module (guix store)
  #:use-module (guix utils)
  #:use-module (guix gexp)
  #:use-module (guix monads)
  #:use-module (guix search-paths)
  #:use-module (guix build-system)
  #:use-module (guix build-system gnu)
  #:use-module (guix packages)
  #:use-module (ice-9 match)
  #:export (%linux-module-build-system-modules
            linux-module-build
            linux-module-build-system))

;; Commentary:
;;
;; Code:

(define %linux-module-build-system-modules
  ;; Build-side modules imported by default.
  `((guix build linux-module-build-system)
    ,@%gnu-build-system-modules))

(define (default-linux)
  "Return the default Linux package."

  ;; Do not use `@' to avoid introducing circular dependencies.
  (let ((module (resolve-interface '(gnu packages linux))))
    (module-ref module 'linux-libre)))

(define (system->arch system)
  (let ((module (resolve-interface '(gnu packages linux))))
    ((module-ref module 'system->linux-architecture) system)))

(define (make-linux-module-builder linux)
  (package
    (inherit linux)
    (name (string-append (package-name linux) "-module-builder"))
    (inputs
     `(("linux" ,linux)))
    (arguments
     (substitute-keyword-arguments (package-arguments linux)
       ((#:phases phases)
        #~(modify-phases #$phases
            (replace 'build
              (lambda _
                (invoke "make" "modules_prepare")))
            (delete 'strip)             ; faster
            (replace 'install
              (lambda* (#:key inputs #:allow-other-keys)
                (let ((out-lib-build (string-append #$output "/lib/modules/build")))
                  ;; Delete some huge items that we probably don't need.
                  ;; TODO: Only preserve the minimum, i.e. [Kbuild], Kconfig,
                  ;; scripts, include, ".config".
                  (copy-recursively "." out-lib-build)
                  (for-each (lambda (name)
                              (when (file-exists? name)
                                (delete-file-recursively name)))
                            (map (lambda (name)
                                   (string-append out-lib-build "/" name))
                                 '("arch"          ; 137 MB
                                   ;;"tools"       ; 44 MB built by our 'build phase
                                   "tools/testing" ; 14 MB
                                   "tools/perf"    ; 17 MB
                                   "drivers"       ; 600 MB
                                   "Documentation" ; 52 MB
                                   "fs"            ; 43 MB
                                   "net"           ; 33 MB
                                   "samples"       ; 2 MB
                                   "sound")))      ; 40 MB
                  ;; Reinstate arch/**/dts since "scripts/dtc" depends on it.
                  ;; Reinstate arch/**/include directories.
                  ;; Reinstate arch/**/Makefile.
                  ;; Reinstate arch/**/module.lds.
                  (for-each
                   (lambda (name)
                     (mkdir-p (dirname (string-append out-lib-build "/" name)))
                     (copy-recursively name
                                       (string-append out-lib-build "/" name)))
                   (append (find-files "arch" "^(dts|include)$"
                                       #:directories? #t)
                       (find-files "arch" "^(Makefile|module.lds)$")))
                  (let* ((linux #$(this-package-input "linux")))
                    (install-file (string-append linux "/System.map")
                                  out-lib-build)
                    (let ((source (string-append linux "/Module.symvers")))
                      (when (file-exists? source)
                        (install-file source out-lib-build)))))))))))))

(define* (lower name
                #:key source inputs native-inputs outputs
                system target
                (linux (default-linux))
                #:allow-other-keys
                #:rest arguments)
  "Return a bag for NAME."
  (define private-keywords
    `(#:target #:gcc #:kmod #:linux #:inputs #:native-inputs
      ,@(if target '() '(#:target))))

  (bag
    (name name)
    (system system) (target target)
    (build-inputs `(,@(if source
                          `(("source" ,source))
                          '())
                    ,@native-inputs
                    ;; TODO: Remove "gmp", "mpfr", "mpc" since they are
                    ;; only needed to compile the gcc plugins.  Maybe
                    ;; remove "flex", "bison", "elfutils", "perl",
                    ;; "openssl".  That leaves very little ("bc", "gcc",
                    ;; "kmod").
                    ,@(package-native-inputs linux)
                    ,@(if target
                          ;; Use the standard cross inputs of
                          ;; 'gnu-build-system'.
                          (standard-cross-packages target 'host)
                          '())
                    ;; Keep the standard inputs of 'gnu-build-system'.
                    ,@(standard-packages)))
    (host-inputs `(,@inputs
                   ("linux" ,linux)
                   ("linux-module-builder"
                    ,(make-linux-module-builder linux))))
    (target-inputs (if target
                       (standard-cross-packages target 'target)
                       '()))
    (outputs outputs)
    (build (if target linux-module-build-cross linux-module-build))
    (arguments (strip-keyword-arguments private-keywords arguments))))

(define* (linux-module-build name inputs
                             #:key
                             source target
                             (search-paths '())
                             (tests? #t)
                             (phases '%standard-phases)
                             (outputs '("out"))
                             (make-flags ''())
                             (parallel-build? #t)
                             (system (%current-system))
                             (source-directory ".")
                             (guile #f)
                             (substitutable? #t)
                             (imported-modules
                              %linux-module-build-system-modules)
                             (modules '((guix build linux-module-build-system)
                                        (guix build utils))))
  "Build SOURCE using LINUX, and with INPUTS."
  (define builder
    (with-imported-modules imported-modules
      #~(begin
          (use-modules #$@(sexp->gexp modules))
          #$(with-build-variables inputs outputs
              #~(linux-module-build #:name #$name
                                    #:source #+source
                                    #:source-directory #$source-directory
                                    #:search-paths '#$(sexp->gexp
                                                       (map search-path-specification->sexp
                                                            search-paths))
                                    #:phases #$phases
                                    #:system #$system
                                    #:target #$target
                                    #:arch #$(system->arch (or target system))
                                    #:tests? #$tests?
                                    #:outputs #$(outputs->gexp outputs)
                                    #:make-flags #$make-flags
                                    #:parallel-build? #$parallel-build?
                                    #:inputs #$(input-tuples->gexp inputs))))))

  (mlet %store-monad ((guile (package->derivation (or guile (default-guile))
                                                  system #:graft? #f)))
    (gexp->derivation name builder
                      #:system system
                      #:guile-for-build guile
                      #:substitutable? substitutable?)))

(define* (linux-module-build-cross
          name
          #:key
          source target
          build-inputs target-inputs host-inputs
          (guile #f)
          (outputs '("out"))
          (make-flags ''())
          (parallel-build? #t)
          (search-paths '())
          (native-search-paths '())
          (tests? #f)
          (phases '%standard-phases)
          (system (%current-system))
          (substitutable? #t)
          (imported-modules
           %linux-module-build-system-modules)
          (modules '((guix build linux-module-build-system)
                     (guix build utils))))
  (define builder
    (with-imported-modules imported-modules
      #~(begin
          (use-modules #$@(sexp->gexp modules))

          (define %build-host-inputs
            '#+(input-tuples->gexp build-inputs))

          (define %build-target-inputs
            (append #$(input-tuples->gexp host-inputs)
                    #+(input-tuples->gexp target-inputs)))

          (linux-module-build #:name #$name
                              #:source #+source
                              #:system #$system
                              #:target #$target
                              #:arch #$(system->arch (or target system))
                              #:outputs #$(outputs->gexp outputs)
                              #:make-flags #$make-flags
                              #:inputs %build-target-inputs
                              #:native-inputs %build-host-inputs
                              #:search-paths
                              '#$(sexp->gexp
                                  (map search-path-specification->sexp
                                       search-paths))
                              #:native-search-paths
                              '#$(map
                                  search-path-specification->sexp
                                  native-search-paths)
                              #:phases #$phases
                              #:tests? #$tests?))))

  (mlet %store-monad ((guile (package->derivation (or guile (default-guile))
                                                  system #:graft? #f)))
    (gexp->derivation name builder
                      #:system system
                      #:guile-for-build guile
                      #:substitutable? substitutable?)))

(define linux-module-build-system
  (build-system
    (name 'linux-module)
    (description "The Linux module build system")
    (lower lower)))

;;; linux-module.scm ends here