From 1ffa7090b99dfd2f54fa883929c5e78d7852657a Mon Sep 17 00:00:00 2001 From: Ludovic Courtès Date: Fri, 18 Jan 2013 01:06:24 +0100 Subject: distro: Change the module name space to (gnu ...). * distro: Rename to... * gnu: ... this. Update module names accordingly. * Makefile.am: Adjust accordingly. * po/POTFILES.in: Likewise. * distro.scm: Search for files under /gnu/packages instead of /distro/packages. * gnu/packages/base.scm (ld-wrapper-boot3): Likewise. --- distro/packages/ld-wrapper.scm | 147 ----------------------------------------- 1 file changed, 147 deletions(-) delete mode 100644 distro/packages/ld-wrapper.scm (limited to 'distro/packages/ld-wrapper.scm') diff --git a/distro/packages/ld-wrapper.scm b/distro/packages/ld-wrapper.scm deleted file mode 100644 index fd5a4cbd0c..0000000000 --- a/distro/packages/ld-wrapper.scm +++ /dev/null @@ -1,147 +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 ). - -main="(@ (gnu build-support ld-wrapper) ld-wrapper)" -exec @GUILE@ -c "(load-compiled \"$0.go\") (apply $main (cdr (command-line)))" "$@" -!# -;;; GNU Guix --- Functional package management for GNU -;;; Copyright © 2012 Ludovic Courtès -;;; -;;; 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 . - -(define-module (gnu build-support ld-wrapper) - #:use-module (srfi srfi-1) - #: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 -;;; 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") "/nix/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 (pure-file-name? file) - ;; Return #t when FILE is the name of a file either within the store or - ;; within the build directory. - (or (not (string-prefix? "/" file)) - (string-prefix? %store-directory file) - (string-prefix? %temporary-directory file) - (and %build-directory - (string-prefix? %build-directory file)))) - -(define (switch-arguments switch args) - ;; Return the arguments passed for the occurrences of SWITCH--e.g., - ;; "-L"--in ARGS. - (let ((prefix-len (string-length switch))) - (fold-right (lambda (arg path) - (if (string-prefix? switch arg) - (cons (substring arg prefix-len) path) - path)) - '() - args))) - -(define (library-path args) - ;; Return the library search path extracted from `-L' switches in ARGS. - ;; Note: allow references to out-of-store directories. When this leads to - ;; actual impurities, this is caught later. - (switch-arguments "-L" args)) - -(define (library-files-linked args) - ;; Return the file names of shared libraries explicitly linked against via - ;; `-l' in ARGS. - (map (lambda (lib) - (string-append "lib" lib ".so")) - (switch-arguments "-l" args))) - -(define (rpath-arguments lib-path library-files) - ;; Return the `-rpath' argument list for each of LIBRARY-FILES found in - ;; LIB-PATH. - (fold-right (lambda (file args) - (let ((absolute (search-path lib-path file))) - (if absolute - (if (or %allow-impurities? - (pure-file-name? absolute)) - (cons* "-rpath" (dirname absolute) - args) - (begin - (format (current-error-port) - "ld-wrapper: error: attempt to use impure library ~s~%" - absolute) - (exit 1))) - args))) - '() - library-files)) - -(define (ld-wrapper . args) - ;; Invoke the real `ld' with ARGS, augmented with `-rpath' switches. - (let* ((lib-path (library-path args)) - (libs (library-files-linked args)) - (args (append args (rpath-arguments lib-path libs)))) - (if %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 -- cgit v1.2.3