diff --git a/racket/src/cs/absify.rkt b/racket/src/cs/absify.rkt
index 82e3284d76..76a704d78b 100644
--- a/racket/src/cs/absify.rkt
+++ b/racket/src/cs/absify.rkt
@@ -4,6 +4,7 @@
 
 (define same-up? #f)
 (define exec? #f)
+(define no-trailing-sep? #f)
 
 (define-values (orig-p extras)
   (command-line
@@ -12,6 +13,8 @@
     (set! same-up? #t)]
    [("--exec") "Find executable path"
     (set! exec? #t)]
+   [("--no-trailing-sep") "Avoid a trailing \"/\""
+    (set! no-trailing-sep? #t)]
    #:args
    (path . extra)
    (values path extra)))
@@ -29,8 +32,14 @@
 		  p)
 	      p))
 	orig-p))
+
+  (define (fix-trailing p)
+    (if no-trailing-sep?
+        (let-values ([(base name dir?) (split-path p)])
+          (build-path base name))
+        p))
   
-  (display (simplify-path (path->complete-path p)))])
+  (display (fix-trailing (simplify-path (path->complete-path p))))])
   
 ;; In case there are extra arguments to an executable, preserve them
 (for ([e (in-list extras)])
diff --git a/racket/src/cs/c/Makefile.in b/racket/src/cs/c/Makefile.in
index ccc05c0ff5..806512113e 100644
--- a/racket/src/cs/c/Makefile.in
+++ b/racket/src/cs/c/Makefile.in
@@ -57,8 +57,8 @@ SETUP_COMMON_BOOT = -l- setup $(SETUP_BOOT_MODE) $(srcdir)/../../setup-go.rkt $(
 ABS_BOOT = $(SETUP_COMMON_BOOT) ignored $(builddir)/ignored.d
 ABS_RACKET = "`$(RACKET) $(ABS_BOOT) $(srcdir)/../absify.rkt --exec $(RACKET)`"
 ABS_SCHEME_SRC = "`$(RACKET) $(ABS_BOOT) $(srcdir)/../absify.rkt $(SCHEME_SRC)`"
-ABS_SRCDIR = "`$(RACKET) $(ABS_BOOT) $(srcdir)/../absify.rkt $(srcdir)`"
-ABS_BUILDDIR = "`$(RACKET) $(ABS_BOOT) $(srcdir)/../absify.rkt $(builddir)`"
+ABS_SRCDIR = "`$(RACKET) $(ABS_BOOT) $(srcdir)/../absify.rkt --no-trailing-sep $(srcdir)`"
+ABS_BUILDDIR = "`$(RACKET) $(ABS_BOOT) $(srcdir)/../absify.rkt --no-trailing-sep $(builddir)`"
 
 SETUP_BOOT = -O 'info@compiler/cm' $(SETUP_COMMON_BOOT)