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-rw-r--r--gnu/packages/commencement.scm15
-rw-r--r--gnu/packages/ld-wrapper.in48
-rw-r--r--gnu/packages/ld-wrapper2.in207
3 files changed, 24 insertions, 246 deletions
diff --git a/gnu/packages/commencement.scm b/gnu/packages/commencement.scm
index 22da2e0fb3..4342dc56d1 100644
--- a/gnu/packages/commencement.scm
+++ b/gnu/packages/commencement.scm
@@ -708,19 +708,6 @@ COREUTILS-FINAL vs. COREUTILS, etc."
;;; GCC toolchain.
;;;
-(define (fixed-ld-wrapper)
- ;; FIXME: In this cycle, a bug was introduced in ld-wrapper: it would
- ;; incorrectly flag ~/.guix-profile/lib/libfoo.so as "impure", due to a bug
- ;; in its symlink resolution code. To work around that while avoiding a
- ;; full rebuild, use an ld-wrapper with the bug-fix for 'gcc-toolchain'.
- (let ((orig (car (assoc-ref %final-inputs "ld-wrapper"))))
- (package
- (inherit orig)
- (location (source-properties->location (current-source-location)))
- (inputs `(("wrapper" ,(search-path %load-path
- "gnu/packages/ld-wrapper2.in"))
- ,@(package-inputs orig))))))
-
(define (gcc-toolchain gcc)
"Return a complete toolchain for GCC."
(package
@@ -759,7 +746,7 @@ and binaries, plus debugging symbols in the 'debug' output), and Binutils.")
;; install everything that we need, and (2) to make sure ld-wrapper comes
;; before Binutils' ld in the user's profile.
(inputs `(("gcc" ,gcc)
- ("ld-wrapper" ,(fixed-ld-wrapper))
+ ("ld-wrapper" ,(car (assoc-ref %final-inputs "ld-wrapper")))
("binutils" ,binutils-final)
("libc" ,glibc-final)
("libc-debug" ,glibc-final "debug")))))
diff --git a/gnu/packages/ld-wrapper.in b/gnu/packages/ld-wrapper.in
index 094018de3d..f4ab17c59f 100644
--- a/gnu/packages/ld-wrapper.in
+++ b/gnu/packages/ld-wrapper.in
@@ -92,34 +92,32 @@ exec @GUILE@ -c "(load-compiled \"@SELF@.go\") (apply $main (cdr (command-line))
(let loop ((file file)
(depth 0))
- (catch 'system-error
- (lambda ()
- (if (>= depth %max-symlink-depth)
- file
- (loop (readlink file) (+ depth 1))))
- (lambda args
- (if (= EINVAL (system-error-errno args))
- file
- (apply throw args))))))
-
-(define (dereference-symlinks file)
- ;; Same as 'readlink*' but return FILE if the symlink target is invalid or
- ;; FILE does not exist.
- (catch 'system-error
- (lambda ()
- ;; When used from a user environment, FILE may refer to
- ;; ~/.guix-profile/lib/libfoo.so, which is itself a symlink to the
- ;; store. Check whether this is the case.
- (readlink* file))
- (lambda args
- (if (= ENOENT (system-error-errno args))
- file
- (apply throw args)))))
+ (define (absolute target)
+ (if (absolute-file-name? target)
+ target
+ (string-append (dirname file) "/" target)))
+
+ (if (>= depth %max-symlink-depth)
+ file
+ (call-with-values
+ (lambda ()
+ (catch 'system-error
+ (lambda ()
+ (values #t (readlink file)))
+ (lambda args
+ (let ((errno (system-error-errno args)))
+ (if (or (= errno EINVAL) (= errno ENOENT))
+ (values #f file)
+ (apply throw args))))))
+ (lambda (success? target)
+ (if success?
+ (loop (absolute target) (+ depth 1))
+ file))))))
(define (pure-file-name? file)
;; Return #t when FILE is the name of a file either within the store
;; (possibly via a symlink) or within the build directory.
- (let ((file (dereference-symlinks file)))
+ (let ((file (readlink* file)))
(or (not (string-prefix? "/" file))
(string-prefix? %store-directory file)
(string-prefix? %temporary-directory file)
@@ -128,7 +126,7 @@ exec @GUILE@ -c "(load-compiled \"@SELF@.go\") (apply $main (cdr (command-line))
(define (store-file-name? file)
;; Return #t when FILE is a store file, possibly indirectly.
- (string-prefix? %store-directory (dereference-symlinks file)))
+ (string-prefix? %store-directory (readlink* file)))
(define (shared-library? file)
;; Return #t when FILE denotes a shared library.
diff --git a/gnu/packages/ld-wrapper2.in b/gnu/packages/ld-wrapper2.in
deleted file mode 100644
index f4ab17c59f..0000000000
--- a/gnu/packages/ld-wrapper2.in
+++ /dev/null
@@ -1,207 +0,0 @@
-#!@BASH@
-# -*- mode: scheme; coding: utf-8; -*-
-
-# XXX: We have to go through Bash because there's no command-line switch to
-# augment %load-compiled-path, and because of the silly 127-byte limit for
-# the shebang line in Linux.
-# Use `load-compiled' because `load' (and `-l') doesn't otherwise load our
-# .go file (see <http://bugs.gnu.org/12519>).
-
-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 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 (gnu build-support ld-wrapper)
- #:use-module (srfi srfi-1)
- #:use-module (ice-9 match)
- #:export (ld-wrapper))
-
-;;; Commentary:
-;;;
-;;; This is a wrapper for the linker. Its purpose is to inspect the -L and
-;;; -l switches passed to the linker, add corresponding -rpath arguments, and
-;;; invoke the actual linker with this new set of arguments.
-;;;
-;;; The alternatives to this hack would be:
-;;;
-;;; 1. Using $LD_RUN_PATH. However, that would tend to include more than
-;;; needed in the RPATH; for instance, given a package with `libfoo' as
-;;; an input, all its binaries would have libfoo in their RPATH,
-;;; regardless of whether they actually NEED it.
-;;;
-;;; 2. Use a GCC "lib" spec string such as `%{L*:-rpath %*}', which adds a
-;;; `-rpath LIBDIR' argument for each occurrence of `-L LIBDIR'.
-;;; However, this doesn't work when $LIBRARY_PATH is used, because the
-;;; additional `-L' switches are not matched by the above rule, because
-;;; the rule only matches explicit user-provided switches. See
-;;; <http://gcc.gnu.org/ml/gcc-help/2012-09/msg00110.html> for details.
-;;;
-;;; As a bonus, this wrapper checks for "impurities"--i.e., references to
-;;; libraries outside the store.
-;;;
-;;; Code:
-
-(define %real-ld
- ;; Name of the linker that we wrap.
- "@LD@")
-
-(define %store-directory
- ;; File name of the store.
- (or (getenv "NIX_STORE") "/gnu/store"))
-
-(define %temporary-directory
- ;; Temporary directory.
- (or (getenv "TMPDIR") "/tmp"))
-
-(define %build-directory
- ;; Top build directory when run from a builder.
- (getenv "NIX_BUILD_TOP"))
-
-(define %allow-impurities?
- ;; Whether to allow references to libraries outside the store.
- (getenv "GUIX_LD_WRAPPER_ALLOW_IMPURITIES"))
-
-(define %debug?
- ;; Whether to emit debugging output.
- (getenv "GUIX_LD_WRAPPER_DEBUG"))
-
-(define %disable-rpath?
- ;; Whether to disable automatic '-rpath' addition.
- (getenv "GUIX_LD_WRAPPER_DISABLE_RPATH"))
-
-(define (readlink* file)
- ;; Call 'readlink' until the result is not a symlink.
- (define %max-symlink-depth 50)
-
- (let loop ((file file)
- (depth 0))
- (define (absolute target)
- (if (absolute-file-name? target)
- target
- (string-append (dirname file) "/" target)))
-
- (if (>= depth %max-symlink-depth)
- file
- (call-with-values
- (lambda ()
- (catch 'system-error
- (lambda ()
- (values #t (readlink file)))
- (lambda args
- (let ((errno (system-error-errno args)))
- (if (or (= errno EINVAL) (= errno ENOENT))
- (values #f file)
- (apply throw args))))))
- (lambda (success? target)
- (if success?
- (loop (absolute target) (+ depth 1))
- file))))))
-
-(define (pure-file-name? file)
- ;; Return #t when FILE is the name of a file either within the store
- ;; (possibly via a symlink) or within the build directory.
- (let ((file (readlink* file)))
- (or (not (string-prefix? "/" file))
- (string-prefix? %store-directory file)
- (string-prefix? %temporary-directory file)
- (and %build-directory
- (string-prefix? %build-directory file)))))
-
-(define (store-file-name? file)
- ;; Return #t when FILE is a store file, possibly indirectly.
- (string-prefix? %store-directory (readlink* file)))
-
-(define (shared-library? file)
- ;; Return #t when FILE denotes a shared library.
- (or (string-suffix? ".so" file)
- (let ((index (string-contains file ".so.")))
- ;; Since we cannot use regexps during bootstrap, roll our own.
- (and index
- (string-every (char-set-union (char-set #\.) char-set:digit)
- (string-drop file (+ index 3)))))))
-
-(define (library-files-linked args)
- ;; Return the file names of shared libraries explicitly linked against via
- ;; `-l' or with an absolute file name in ARGS.
- (define path+files
- (fold (lambda (argument result)
- (match result
- ((library-path . library-files)
- (cond ((string-prefix? "-L" argument) ;augment the search path
- (cons (append library-path
- (list (string-drop argument 2)))
- library-files))
- ((string-prefix? "-l" argument) ;add library
- (let* ((lib (string-append "lib"
- (string-drop argument 2)
- ".so"))
- (full (search-path library-path lib)))
- (if full
- (cons library-path
- (cons full library-files))
- result)))
- ((and (string-prefix? %store-directory argument)
- (shared-library? argument)) ;add library
- (cons library-path
- (cons argument library-files)))
- (else
- result)))))
- (cons '() '())
- args))
-
- (match path+files
- ((path . files)
- (reverse files))))
-
-(define (rpath-arguments library-files)
- ;; Return the `-rpath' argument list for each of LIBRARY-FILES, a list of
- ;; absolute file names.
- (fold-right (lambda (file args)
- ;; Add '-rpath' if and only if FILE is in the store; we don't
- ;; want to add '-rpath' for files under %BUILD-DIRECTORY or
- ;; %TEMPORARY-DIRECTORY because that could leak to installed
- ;; files.
- (cond ((and (not %disable-rpath?)
- (store-file-name? file))
- (cons* "-rpath" (dirname file) args))
- ((or %allow-impurities?
- (pure-file-name? file))
- args)
- (else
- (begin
- (format (current-error-port)
- "ld-wrapper: error: attempt to use \
-impure library ~s~%"
- file)
- (exit 1)))))
- '()
- library-files))
-
-(define (ld-wrapper . args)
- ;; Invoke the real `ld' with ARGS, augmented with `-rpath' switches.
- (let* ((libs (library-files-linked args))
- (args (append args (rpath-arguments libs))))
- (when %debug?
- (format (current-error-port)
- "ld-wrapper: invoking `~a' with ~s~%"
- %real-ld args))
- (apply execl %real-ld (basename %real-ld) args)))
-
-;;; ld-wrapper.scm ends here
generated by cgit v1.2.3 (git 2.45.0) at 2024-12-27 17:44:59 +0000