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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2015 Manolis Fragkiskos Ragkousis <manolis837@gmail.com>
+;;; Copyright © 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 (guix build make-bootstrap)
+ #:use-module (srfi srfi-1)
+ #:use-module (srfi srfi-11)
+ #:use-module (srfi srfi-19)
+ #:use-module (srfi srfi-26)
+ #:use-module (guix build utils)
+ #:export (make-stripped-libc))
+
+;; Commentary:
+;;
+;; This module provides facilities to build the bootstrap binaries.
+;;
+;; Code:
+
+(define (make-stripped-libc output libc kernel-headers)
+ "Copy to OUTPUT the subset of LIBC and KERNEL-HEADERS that is needed
+when producing a bootstrap libc."
+
+ (define (copy-mach-headers output kernel-headers)
+ (let* ((incdir (string-append output "/include")))
+ (copy-recursively (string-append libc "/include") incdir)
+
+ (copy-recursively (string-append kernel-headers "/include/mach")
+ (string-append incdir "/mach"))
+ #t))
+
+ (define (copy-linux-headers output kernel-headers)
+ (let* ((incdir (string-append output "/include")))
+ (copy-recursively (string-append libc "/include") incdir)
+
+ ;; Copy some of the Linux-Libre headers that glibc headers
+ ;; refer to.
+ (mkdir (string-append incdir "/linux"))
+ (for-each (lambda (file)
+ (install-file (string-append kernel-headers "/include/linux/" file)
+ (string-append incdir "/linux")))
+ '("limits.h" "errno.h" "socket.h" "kernel.h"
+ "sysctl.h" "param.h" "ioctl.h" "types.h"
+ "posix_types.h" "stddef.h"))
+
+ (copy-recursively (string-append kernel-headers "/include/asm")
+ (string-append incdir "/asm"))
+ (copy-recursively (string-append kernel-headers "/include/asm-generic")
+ (string-append incdir "/asm-generic"))
+ #t))
+
+ (define %libc-object-files-rx "^(crt.*|ld.*|lib(c|m|dl|rt|pthread|nsl|\
+util).*\\.so(\\..*)?|lib(machuser|hurduser).so.*|libc(rt|)_nonshared\\.a)$")
+
+ (setvbuf (current-output-port) _IOLBF)
+ (let* ((libdir (string-append output "/lib")))
+ (mkdir-p libdir)
+ (for-each (lambda (file)
+ (let ((target (string-append libdir "/"
+ (basename file))))
+ (copy-file file target)
+ (remove-store-references target)))
+ (find-files (string-append libc "/lib") %libc-object-files-rx))
+ #t)
+
+ (if (directory-exists? (string-append kernel-headers "/include/mach"))
+ (copy-mach-headers output kernel-headers)
+ (copy-linux-headers output kernel-headers)))
+
+