gnu: Add 'make-ld-wrapper' procedure.

* gnu/packages/base.scm (make-ld-wrapper): New procedure.  Abstracted
  from...
* gnu/packages/commencement.scm (ld-wrapper-boot3): ... here.  Use it.

2 files changed, 60 insertions, 48 deletions

diff --git a/gnu/packages/base.scm b/gnu/packages/base.scm
index 3ff3172f0f..9eb90dca5b 100644
--- a/gnu/packages/base.scm
+++ b/gnu/packages/base.scm
@@ -358,6 +358,62 @@ included.")
    (license gpl3+)
    (home-page "http://www.gnu.org/software/binutils/")))
 
+(define* (make-ld-wrapper name #:key binutils guile bash
+                          (guile-for-build guile))
+  "Return a package called NAME that contains a wrapper for the 'ld' program
+of BINUTILS, which adds '-rpath' flags to the actual 'ld' command line.  The
+wrapper uses GUILE and BASH."
+  (package
+    (name name)
+    (version "0")
+    (source #f)
+    (build-system trivial-build-system)
+    (inputs `(("binutils" ,binutils)
+              ("guile"    ,guile)
+              ("bash"     ,bash)
+              ("wrapper"  ,(search-path %load-path
+                                        "gnu/packages/ld-wrapper.scm"))))
+    (arguments
+     `(#:guile ,guile-for-build
+       #:modules ((guix build utils))
+       #:builder (begin
+                   (use-modules (guix build utils)
+                                (system base compile))
+
+                   (let* ((out (assoc-ref %outputs "out"))
+                          (bin (string-append out "/bin"))
+                          (ld  (string-append bin "/ld"))
+                          (go  (string-append bin "/ld.go")))
+
+                     (setvbuf (current-output-port) _IOLBF)
+                     (format #t "building ~s/bin/ld wrapper in ~s~%"
+                             (assoc-ref %build-inputs "binutils")
+                             out)
+
+                     (mkdir-p bin)
+                     (copy-file (assoc-ref %build-inputs "wrapper") ld)
+                     (substitute* ld
+                       (("@GUILE@")
+                        (string-append (assoc-ref %build-inputs "guile")
+                                       "/bin/guile"))
+                       (("@BASH@")
+                        (string-append (assoc-ref %build-inputs "bash")
+                                       "/bin/bash"))
+                       (("@LD@")
+                        (string-append (assoc-ref %build-inputs "binutils")
+                                       "/bin/ld")))
+                     (chmod ld #o555)
+                     (compile-file ld #:output-file go)))))
+    (synopsis "The linker wrapper")
+    (description
+     "The linker wrapper (or 'ld-wrapper') wraps the linker to add any
+missing '-rpath' flags, and to detect any misuse of libraries outside of the
+store.")
+    (home-page "http://www.gnu.org/software/guix/")
+    (license gpl3+)))
+
+(export make-ld-wrapper)
+
 (define-public glibc
   (package
    (name "glibc")
diff --git a/gnu/packages/commencement.scm b/gnu/packages/commencement.scm
index b421ab08ef..766aea4bfd 100644
--- a/gnu/packages/commencement.scm
+++ b/gnu/packages/commencement.scm
@@ -545,54 +545,10 @@ exec ~a/bin/~a-~a -B~a/lib -Wl,-dynamic-linker -Wl,~a/~a \"$@\"~%"
 
 (define ld-wrapper-boot3
   ;; A linker wrapper that uses the bootstrap Guile.
-  (package
-    (name "ld-wrapper-boot3")
-    (version "0")
-    (source #f)
-    (build-system trivial-build-system)
-    (inputs `(("binutils" ,binutils-final)
-              ("guile"    ,%bootstrap-guile)
-              ("bash"     ,@(assoc-ref %boot2-inputs "bash"))
-              ("wrapper"  ,(search-path %load-path
-                                        "gnu/packages/ld-wrapper.scm"))))
-    (arguments
-     `(#:guile ,%bootstrap-guile
-       #:modules ((guix build utils))
-       #:builder (begin
-                   (use-modules (guix build utils)
-                                (system base compile))
-
-                   (let* ((out (assoc-ref %outputs "out"))
-                          (bin (string-append out "/bin"))
-                          (ld  (string-append bin "/ld"))
-                          (go  (string-append bin "/ld.go")))
-
-                     (setvbuf (current-output-port) _IOLBF)
-                     (format #t "building ~s/bin/ld wrapper in ~s~%"
-                             (assoc-ref %build-inputs "binutils")
-                             out)
-
-                     (mkdir-p bin)
-                     (copy-file (assoc-ref %build-inputs "wrapper") ld)
-                     (substitute* ld
-                       (("@GUILE@")
-                        (string-append (assoc-ref %build-inputs "guile")
-                                       "/bin/guile"))
-                       (("@BASH@")
-                        (string-append (assoc-ref %build-inputs "bash")
-                                       "/bin/bash"))
-                       (("@LD@")
-                        (string-append (assoc-ref %build-inputs "binutils")
-                                       "/bin/ld")))
-                     (chmod ld #o555)
-                     (compile-file ld #:output-file go)))))
-    (synopsis "The linker wrapper")
-    (description
-     "The linker wrapper (or `ld-wrapper') wraps the linker to add any
-missing `-rpath' flags, and to detect any misuse of libraries outside of the
-store.")
-    (home-page #f)
-    (license gpl3+)))
+  (make-ld-wrapper "ld-wrapper-boot3"
+                   #:binutils binutils-final
+                   #:guile %bootstrap-guile
+                   #:bash (car (assoc-ref %boot2-inputs "bash"))))
 
 (define %boot3-inputs
   ;; 4th stage inputs.