guix/gnu/packages/pkg-config.scm
Ludovic Courtès 839285dd5b
gnu: Avoid cycle involving (gnu packages pkg-config).
Fixes a regression introduced in
7a26aee61bbbd8e37745ce13433545333eac4505 whereby (gnu packages
pkg-config) would be caught in a cycle, leading to miscompilation of
package modules, in turn leading to failure to compute the Guix
derivation with exceptions like:

  1. &package-input-error:
      package: #<package libgc@8.2.4 7fee96c4dc60>
      input: ("_" #<syntax-transformer pkg-config>)

* gnu/packages/pkg-config.scm: Autoload (gnu packages check).

Change-Id: I624e701a0c411b6f3d9ad5e10dca6ad7cf552be4
2024-08-31 10:45:02 +02:00

207 lines
8.6 KiB
Scheme

;;; 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>
;;; Copyright © 2022, 2024 Maxim Cournoyer <maxim.cournoyer@gmail.com>
;;; Copyright © 2023 Zheng Junjie <873216071@qq.com>
;;;
;;; 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 search-paths)
#:use-module (guix build-system gnu)
#:use-module (guix build-system trivial)
#:use-module (gnu packages bash)
;; Note: Because this module defines the 'pkg-config' macro, it cannot be
;; caught in a cycle with other package modules or the macro wouldn't be
;; visible at the time those other modules are compiled. To fulfill that
;; constraint, load (gnu packages check) lazily.
#:autoload (gnu packages check) (atf kyua)
#: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 $PKG_CONFIG_PATH))
(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)))))
(define-public pkgconf
(package
(name "pkgconf")
(version "2.1.0")
(source (origin
(method url-fetch)
(uri (string-append "https://distfiles.dereferenced.org/"
name "/" name "-" version ".tar.xz"))
(sha256
(base32
"0qbpczwrrsq2981mdv3iil26vq9ac8v1sfi9233jpiaixrhmhv96"))))
(build-system gnu-build-system)
(arguments
(list #:phases #~(modify-phases %standard-phases
(add-after 'unpack 'set-HOME
(lambda _
;; Kyua requires a writable HOME.
(setenv "HOME" "/tmp"))))))
(native-inputs (list atf kyua))
(native-search-paths (list $PKG_CONFIG_PATH))
(home-page "http://pkgconf.org/")
(synopsis "Package compiler and linker metadata toolkit")
(description "@command{pkgconf} is a program which helps to configure
compiler and linker flags for development libraries. It is similar to
pkg-config from freedesktop.org. @code{libpkgconf} is a library which
provides access to most of pkgconf's functionality, to allow other tooling
such as compilers and IDEs to discover and use libraries configured by
pkgconf.")
(license isc)))