aboutsummaryrefslogtreecommitdiff
path: root/gnu/packages/pkg-config.scm
blob: 770426d779345b0006ee1989c53d79f6e409447a (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
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013, 2014, 2016 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2019 Mathieu Othacehe <m.othacehe@gmail.com>
;;; Copyright © 2021 Maxime Devos <maximedevos@telenet.be>
;;;
;;; 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 (gnu packages pkg-config)
  #:use-module (guix licenses)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix gexp)
  #:use-module (guix build-system gnu)
  #:use-module (guix build-system trivial)
  #:use-module (gnu packages bash)
  #:use-module (guix memoization)
  #:export (pkg-config))

;; This is the "primitive" pkg-config package.  People should use `pkg-config'
;; (see below) rather than `%pkg-config', but we export `%pkg-config' so that
;; `fold-packages' finds it.
(define-public %pkg-config
  (package
   (name "pkg-config")
   (version "0.29.2")
   (source (origin
            (method url-fetch)
            (uri (list
                  (string-append
                   "http://fossies.org/linux/misc/pkg-config-" version
                   ".tar.gz")

                  ;; FIXME: The following URL redirects to HTTPS, which
                  ;; creates bootstrapping problems:
                  ;; <http://bugs.gnu.org/22774>.
                  (string-append
                   "http://pkgconfig.freedesktop.org/releases/pkg-config-"
                   version ".tar.gz")))
            (sha256
             (base32
              "14fmwzki1rlz8bs2p810lk6jqdxsk966d8drgsjmi54cd00rrikg"))))
   (build-system gnu-build-system)
   (arguments
    `(#:configure-flags
      '("--with-internal-glib"
        ;; Those variables are guessed incorrectly when cross-compiling.
        ;; See: https://developer.gimp.org/api/2.0/glib/glib-cross-compiling.html.
        ,@(if (%current-target-system)
              '("glib_cv_stack_grows=no"
                "glib_cv_uscore=no"
                "ac_cv_func_posix_getpwuid_r=yes"
                "ac_cv_func_posix_getgrgid_r=yes")
              '()))))
   (native-search-paths
    (list (search-path-specification
           (variable "PKG_CONFIG_PATH")
           (files '("lib/pkgconfig" "lib64/pkgconfig" "share/pkgconfig")))))
   (home-page "https://www.freedesktop.org/wiki/Software/pkg-config")
   (license gpl2+)
   (synopsis "Helper tool used when compiling applications and libraries")
   (description
    "pkg-config is a helper tool used when compiling applications and
libraries.  It helps you insert the correct compiler options on the
command line so an application can use gcc -o test test.c `pkg-config
--libs --cflags glib-2.0` for instance, rather than hard-coding values
on where to find glib (or other libraries).  It is language-agnostic, so
it can be used for defining the location of documentation tools, for
instance.")))

(define cross-pkg-config
  (mlambda (target)
    "Return a pkg-config for TARGET, essentially just a wrapper called
`TARGET-pkg-config', as `configure' scripts like it."
    ;; See <http://www.flameeyes.eu/autotools-mythbuster/pkgconfig/cross-compiling.html>
    ;; for details.
    (package
      (inherit %pkg-config)
      (name (string-append (package-name %pkg-config) "-" target))
      (build-system trivial-build-system)
      (arguments
       `(#:modules ((guix build utils))
         #:builder (begin
                     (use-modules (guix build utils))

                     (let* ((in     (assoc-ref %build-inputs "pkg-config"))
                            (out    (assoc-ref %outputs "out"))
                            (bin    (string-append out "/bin"))
                            (prog   (string-append ,target "-pkg-config"))
                            (native (string-append in "/bin/pkg-config")))

                       (mkdir-p bin)

                       ;; Create a `TARGET-pkg-config' -> `pkg-config' symlink.
                       ;; This satisfies the pkg.m4 macros, which use
                       ;; AC_PROG_TOOL to determine the `pkg-config' program
                       ;; name.
                       (symlink native (string-append bin "/" prog))

                       ;; Also make 'pkg.m4' available, some packages might
                       ;; expect it.
                       (mkdir-p (string-append out "/share"))
                       (symlink (string-append in "/share/aclocal")
                                (string-append out "/share/aclocal"))
                       #t))))
      (native-inputs `(("pkg-config" ,%pkg-config)))

      ;; Ignore native inputs, and set `PKG_CONFIG_PATH' for target inputs.
      (native-search-paths '())
      (search-paths (package-native-search-paths %pkg-config)))))

(define (pkg-config-for-target target)
  "Return a pkg-config package for TARGET, which may be either #f for a native
build, or a GNU triplet."
  (if target
      (cross-pkg-config target)
      %pkg-config))

;; This hack allows us to automatically choose the native or the cross
;; `pkg-config' depending on whether it's being used in a cross-build
;; environment or not.
(define-syntax pkg-config
  (identifier-syntax (pkg-config-for-target (%current-target-system))))

;; This hack allows for using both "pkg-config" and "TARGET-pkg-config"
;; at the same time.  Simply using '%pkg-config' and 'pkg-config' won't
;; work because they both use the "PKG_CONFIG_PATH" environment variable.
(define-public pkg-config-for-build
  (package
    (inherit (hidden-package %pkg-config))
    (name "pkg-config-for-build")
    (version "0")
    (source #f)
    (build-system trivial-build-system)
    (inputs
     (list bash-minimal %pkg-config))
    (arguments
     `(#:modules ((guix build utils))
       #:builder
       ,#~(begin
            (use-modules (guix build utils))
            (define where (string-append #$output "/bin/pkg-config"))
            (mkdir-p (dirname where))
            (call-with-output-file where
              (lambda (port)
                (format port "#!~a
export PKG_CONFIG_PATH=\"$PKG_CONFIG_PATH_FOR_BUILD\"
exec ~a \"$@\""
                        (search-input-file %build-inputs "bin/bash")
                        (search-input-file %build-inputs "bin/pkg-config"))))
            (chmod where #o500))))
    (native-search-paths
     (map (lambda (original)
            (search-path-specification
             (inherit original)
             (variable "PKG_CONFIG_PATH_FOR_BUILD")))
          (package-native-search-paths %pkg-config)))))