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ld-wrapper: Read arguments from "response files".

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Fixes <http://bugs.gnu.org/25882>.
Reported by Federico Beffa <beffa@fbengineering.ch>.

* gnu/packages/ld-wrapper.in (expand-arguments): New procedure.
(ld-wrapper): Use it.
This commit is contained in:
Ludovic Courtès 2017-05-25 14:34:18 +02:00
parent 596649313c
commit 696487d665
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GPG key ID: 090B11993D9AEBB5
1 changed files with 38 additions and 2 deletions
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40
gnu/packages/ld-wrapper.in
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@ -15,7 +15,7 @@ main="(@ (gnu build-support ld-wrapper) ld-wrapper)"
exec @GUILE@ -c "(load-compiled \"@SELF@.go\") (apply $main (cdr (command-line)))" "$@"
!#
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@ -35,6 +35,7 @@ exec @GUILE@ -c "(load-compiled \"@SELF@.go\") (apply $main (cdr (command-line))
(define-module (gnu build-support ld-wrapper)
#:use-module (srfi srfi-1)
#:use-module (ice-9 match)
#:autoload (ice-9 rdelim) (read-string)
#:export (ld-wrapper))
;;; Commentary:
@ -222,9 +223,44 @@ impure library ~s~%"
'()
library-files))
(define (expand-arguments args)
;; Expand ARGS such that "response file" arguments, such as "@args.txt", are
;; expanded (info "(gcc) Overall Options").
(define (response-file-arguments file)
(when %debug?
(format (current-error-port)
"ld-wrapper: attempting to read arguments from '~a'~%" file))
;; FIXME: Options can contain whitespace if they are protected by single
;; or double quotes; this is not implemented here.
(string-tokenize (call-with-input-file file read-string)))
(define result
(fold-right (lambda (arg result)
(if (string-prefix? "@" arg)
(let ((file (string-drop arg 1)))
(append (catch 'system-error
(lambda ()
(response-file-arguments file))
(lambda args
;; FILE doesn't exist or cannot be read so
;; leave ARG as is.
(list arg)))
result))
(cons arg result)))
'()
args))
;; If there are "@" arguments in RESULT *and* we can expand them (they don't
;; refer to nonexistent files), then recurse.
(if (equal? result args)
result
(expand-arguments result)))
(define (ld-wrapper . args)
;; Invoke the real `ld' with ARGS, augmented with `-rpath' switches.
(let* ((path (library-search-path args))
(let* ((args (expand-arguments args))
(path (library-search-path args))
(libs (library-files-linked args path))
(args (append args (rpath-arguments libs))))
(when %debug?