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blob 06b4cd7bebbf8a48739daba23997a7c07dd7b639 2218 bytes (raw)
name: guix/build/absolute-inclusions.scm 	 # note: path name is non-authoritative(*)

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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2022 Maxime Devos <maximedevos@telenet.be>
;;; Copyright © 2022 Olivier Dion <olivier.dion@polymtl.ca>
;;;
;;; 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 absolute-inclusions)
  #:use-module (guix build utils)
  #:use-module (ice-9 match)
  #:use-module (rnrs exceptions)
  #:export (absolute-inclusions patch-header-inclusions))

(define (absolute-inclusions files header-locations)
  (substitute* files
    (("^[ \t]*#[ \t]*include[ \t]*<(.*)>[ \t]*" original header-name)
     (guard (c ((search-error? c) original))
       ;; TODO: verify with libgcc & etc, maybe avoid increasing the
       ;; closure size by skipping glibc and linux headers ...
       (format #f "#include <~a>"
               (search-input-file header-locations
                (string-append "include/" header-name)))))))

(define header-file?
  ;; See gcc(1) for the list of suffixes.
  (let ((suffixes (list "h" "hh" "H" "hp" "hxx" "hpp" "HPP" "h++" "tcc")))
    (file-name-predicate
     (format #f "\\.(~a)$" (string-join suffixes "|" 'infix)))))

(define* (patch-header-inclusions #:key inputs outputs #:allow-other-keys)
  "Patch inclusions in C headers in OUTPUTS to use absolute file names."
  (define header-locations (append outputs inputs))
  (for-each (match-lambda
              ((_ . output)
               (absolute-inclusions
                (find-files (string-append output "/include")
                            header-file?)
                header-locations)))
            outputs))

debug log:

solving 06b4cd7beb ...
found 06b4cd7beb in https://yhetil.org/guix/4b19827ee0d266ecd80dc7c5d776f3ffd764a575.1649459701.git.olivier.dion@polymtl.ca/

applying [1/1] https://yhetil.org/guix/4b19827ee0d266ecd80dc7c5d776f3ffd764a575.1649459701.git.olivier.dion@polymtl.ca/
diff --git a/guix/build/absolute-inclusions.scm b/guix/build/absolute-inclusions.scm
new file mode 100644
index 0000000000..06b4cd7beb

Checking patch guix/build/absolute-inclusions.scm...
Applied patch guix/build/absolute-inclusions.scm cleanly.

index at:
100644 06b4cd7bebbf8a48739daba23997a7c07dd7b639	guix/build/absolute-inclusions.scm

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    Blobs themselves have no identifier aside from the hash of its contents.^

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