176 lines
7.0 KiB
Scheme
176 lines
7.0 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2019 Danny Milosavljevic <dannym@scratchpost.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (guix build-system linux-module)
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#:use-module (guix store)
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#:use-module (guix utils)
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#:use-module (guix derivations)
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#:use-module (guix search-paths)
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#:use-module (guix build-system)
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#:use-module (guix build-system gnu)
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#:use-module (guix packages)
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#:use-module (ice-9 match)
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#:export (%linux-module-build-system-modules
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linux-module-build
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linux-module-build-system))
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;; Commentary:
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;;
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;; Code:
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(define %linux-module-build-system-modules
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;; Build-side modules imported by default.
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`((guix build linux-module-build-system)
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,@%gnu-build-system-modules))
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(define (default-linux)
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"Return the default Linux package."
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;; Do not use `@' to avoid introducing circular dependencies.
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(let ((module (resolve-interface '(gnu packages linux))))
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(module-ref module 'linux-libre)))
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(define (default-kmod)
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"Return the default kmod package."
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;; Do not use `@' to avoid introducing circular dependencies.
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(let ((module (resolve-interface '(gnu packages linux))))
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(module-ref module 'kmod)))
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(define (default-gcc)
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"Return the default gcc package."
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;; Do not use `@' to avoid introducing circular dependencies.
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(let ((module (resolve-interface '(gnu packages gcc))))
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(module-ref module 'gcc-7)))
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(define (make-linux-module-builder linux)
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(package
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(inherit linux)
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(name (string-append (package-name linux) "-module-builder"))
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(native-inputs
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`(("linux" ,linux)
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,@(package-native-inputs linux)))
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(arguments
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(substitute-keyword-arguments (package-arguments linux)
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((#:phases phases)
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`(modify-phases ,phases
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(replace 'build
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(lambda _
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(invoke "make" "modules_prepare")))
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(delete 'strip) ; faster.
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(replace 'install
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(lambda* (#:key inputs outputs #:allow-other-keys)
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(let* ((out (assoc-ref outputs "out"))
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(out-lib-build (string-append out "/lib/modules/build")))
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; TODO: Only preserve the minimum, i.e. [Kbuild], Kconfig, scripts, include, ".config".
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(copy-recursively "." out-lib-build)
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(let* ((linux (assoc-ref inputs "linux")))
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(install-file (string-append linux "/System.map")
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out-lib-build)
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(let ((source (string-append linux "/Module.symvers")))
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(if (file-exists? source)
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(install-file source out-lib-build))))
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#t)))))))))
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(define* (lower name
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#:key source inputs native-inputs outputs
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system target
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(linux (default-linux))
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#:allow-other-keys
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#:rest arguments)
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"Return a bag for NAME."
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(define private-keywords
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'(#:source #:target #:gcc #:kmod #:linux #:inputs #:native-inputs))
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(and (not target) ;XXX: no cross-compilation
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(bag
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(name name)
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(system system)
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(host-inputs `(,@(if source
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`(("source" ,source))
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'())
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,@inputs
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,@(standard-packages)))
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(build-inputs `(("linux" ,linux) ; for "Module.symvers".
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("linux-module-builder"
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,(make-linux-module-builder linux))
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,@native-inputs
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;; 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").
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,@(package-native-inputs linux)))
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(outputs outputs)
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(build linux-module-build)
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(arguments (strip-keyword-arguments private-keywords arguments)))))
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(define* (linux-module-build store name inputs
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#:key
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(search-paths '())
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(tests? #t)
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(phases '(@ (guix build linux-module-build-system)
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%standard-phases))
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(outputs '("out"))
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(system (%current-system))
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(guile #f)
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(imported-modules
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%linux-module-build-system-modules)
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(modules '((guix build linux-module-build-system)
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(guix build utils))))
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"Build SOURCE using LINUX, and with INPUTS."
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(define builder
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`(begin
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(use-modules ,@modules)
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(linux-module-build #:name ,name
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#:source ,(match (assoc-ref inputs "source")
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(((? derivation? source))
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(derivation->output-path source))
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((source)
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source)
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(source
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source))
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#:search-paths ',(map search-path-specification->sexp
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search-paths)
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#:phases ,phases
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#:system ,system
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#:tests? ,tests?
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#:outputs %outputs
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#:inputs %build-inputs)))
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(define guile-for-build
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(match guile
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((? package?)
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(package-derivation store guile system #:graft? #f))
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(#f ; the default
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(let* ((distro (resolve-interface '(gnu packages commencement)))
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(guile (module-ref distro 'guile-final)))
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(package-derivation store guile system #:graft? #f)))))
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(build-expression->derivation store name builder
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#:system system
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#:inputs inputs
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#:modules imported-modules
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#:outputs outputs
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#:guile-for-build guile-for-build))
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(define linux-module-build-system
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(build-system
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(name 'linux-module)
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(description "The Linux module build system")
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(lower lower)))
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;;; linux-module.scm ends here
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