bug#26341: [PATCH 5/5] build: Fix compilation warnings.

[Mathieu Othacehe <m.othacehe@gmail.com>]

* gnu/build/linux-boot.scm (define-module): Use (guix build syscalls).
* gnu/build/linux-modules.scm (define-module): Ditto.
* gnu/build/file-systems (define-module): Stop re-exporting mount, umount and
  MS_* flags as this is now safe to include (guix build syscalls) instead.
  (mount): Remove procedure.
  (umount): Ditto.
---
 gnu/build/file-systems.scm  | 15 ++-------------
 gnu/build/linux-boot.scm    |  2 ++
 gnu/build/linux-modules.scm |  2 ++
 3 files changed, 6 insertions(+), 13 deletions(-)

diff --git a/gnu/build/file-systems.scm b/gnu/build/file-systems.scm
index fe98df95d..eb9f07861 100644
--- a/gnu/build/file-systems.scm
+++ b/gnu/build/file-systems.scm
@@ -1,6 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2016, 2017 David Craven <david@craven.ch>
+;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -47,12 +48,7 @@
 
             mount-flags->bit-mask
             check-file-system
-            mount-file-system)
-  #:re-export (mount
-               umount
-               MS_BIND
-               MS_MOVE
-               MS_RDONLY))
+            mount-file-system))
 
 ;;; Commentary:
 ;;;
@@ -61,13 +57,6 @@
 ;;;
 ;;; Code:
 
-;; 'mount' is already defined in the statically linked Guile used for initial
-;; RAM disks, in which case the bindings in (guix build syscalls) do not work
-;; (the FFI bindings do not work there).  Override them in that case.
-(when (module-defined? the-scm-module 'mount)
-  (set! mount (@ (guile) mount))
-  (set! umount (@ (guile) umount)))
-
 (define (bind-mount source target)
   "Bind-mount SOURCE at TARGET."
   (mount source target "" MS_BIND))
diff --git a/gnu/build/linux-boot.scm b/gnu/build/linux-boot.scm
index c34a3f7c1..360ef3fae 100644
--- a/gnu/build/linux-boot.scm
+++ b/gnu/build/linux-boot.scm
@@ -1,5 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -26,6 +27,7 @@
   #:use-module (ice-9 match)
   #:use-module (ice-9 ftw)
   #:use-module (guix build utils)
+  #:use-module (guix build syscalls)
   #:use-module (gnu build linux-modules)
   #:use-module (gnu build file-systems)
   #:export (mount-essential-file-systems
diff --git a/gnu/build/linux-modules.scm b/gnu/build/linux-modules.scm
index d7feb3a08..5ca7bf8e3 100644
--- a/gnu/build/linux-modules.scm
+++ b/gnu/build/linux-modules.scm
@@ -1,5 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2014, 2016 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -18,6 +19,7 @@
 
 (define-module (gnu build linux-modules)
   #:use-module (guix elf)
+  #:use-module (guix build syscalls)
   #:use-module (rnrs io ports)
   #:use-module (rnrs bytevectors)
   #:use-module (srfi srfi-1)
-- 
2.12.2