--- sbcl-0.9.5/src/runtime/linux-os.c.pers	2005-09-24 09:29:54.000000000 -0500
+++ sbcl-0.9.5/src/runtime/linux-os.c	2005-09-27 09:37:33.463478519 -0500
@@ -177,6 +177,10 @@
                 if (i != -1) {
                     runtime[i] = '\0';
                     execve(runtime, argv, envp);
+                } else {
+                    /* if /proc isn't available (like in chroot builds, like mock), 
+                     * try using execvp with argv[0] instead */
+                    execvp(argv[0], argv);
                 }
             }
             /* Either changing the personality or execve() failed. Either