Index: gap-4.11.0/cnf/gac.in
===================================================================
--- gap-4.11.0.orig/cnf/gac.in
+++ gap-4.11.0/cnf/gac.in
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #############################################################################
 ##
 ##  This file is part of GAP, a system for computational discrete algebra.
@@ -56,10 +56,10 @@
 SHELL="@SHELL@"
 
 # absolute path of the directory in which GAP was compiled
-abs_top_builddir="@abs_top_builddir@"
+abs_top_builddir="@GAP_BIN@"
 
 # path of the directory the GAP sources contained in
-abs_top_srcdir="@abs_top_srcdir@"
+abs_top_srcdir="@GAP_BIN@"
 
 #
 libdir="@libdir@"
