;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2013 Ludovic Courtès <ludo@gnu.org> ;;; ;;; 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 rpath) #:use-module (ice-9 popen) #:use-module (ice-9 rdelim) #:export (%patchelf file-rpath augment-rpath)) ;;; Commentary: ;;; ;;; Tools to manipulate the RPATH and RUNPATH of ELF binaries. Currently they ;;; rely on PatchELF. ;;; ;;; Code: (define %patchelf ;; The `patchelf' command. (make-parameter "patchelf")) (define %not-colon (char-set-complement (char-set #\:))) (define (file-rpath file) "Return the RPATH (or RUNPATH) of FILE as a list of directory names, or #f on failure." (let* ((p (open-pipe* OPEN_READ (%patchelf) "--print-rpath" file)) (l (read-line p))) (and (zero? (close-pipe p)) (string-tokenize l %not-colon)))) (define (augment-rpath file dir) "Add DIR to the front of the RPATH and RUNPATH of FILE. Return the new RPATH as a list, or #f on failure." (let* ((rpath (or (file-rpath file) '())) (rpath* (cons dir rpath))) (format #t "~a: changing RPATH from ~s to ~s~%" file rpath rpath*) (and (zero? (system* (%patchelf) "--set-rpath" (string-join rpath* ":") file)) rpath*))) ;;; rpath.scm ends here