--- a/src/sys/make-compile
+++ b/src/sys/make-compile
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 cc="`head -n 1 conf-cc`"
 cat warn-auto.sh
--- a/src/sys/make-compilefordynlib
+++ b/src/sys/make-compilefordynlib
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 cc="`head -n 1 conf-cc`"
 cat warn-auto.sh
--- a/src/sys/make-load
+++ b/src/sys/make-load
@@ -1,4 +1,4 @@
-#!/bin/sh -e
+#!/bin/bash -e
 
 ld="`head -n 1 conf-ld`"
 strip="`head -n 1 conf-stripbins`"
--- a/src/sys/make-makelib
+++ b/src/sys/make-makelib
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 cat warn-auto.sh
 echo 'main="$1"; shift'
--- a/src/sysdeps/Makefile
+++ b/src/sysdeps/Makefile
@@ -218,7 +218,7 @@ hasclockmon.h: choose compile load hasclockmon.h1 hasclockmon.h2 rt.lib
 	exec ./choose cl tryclockmon hasclockmon.h1 hasclockmon.h2 `cat rt.lib` > hasclockmon.h
 
 hasclockrt.h: compile load tryclockrt.c hasclockrt.h1 hasclockrt.h2
-	exec ./compile tryclockrt.c
+	./compile tryclockrt.c; :
 	if ./load tryclockrt 2>/dev/null ; then cat hasclockrt.h2 > hasclockrt.h ; : > rt.lib ; \
 	elif ./load tryclockrt -lrt 2>/dev/null ; then cat hasclockrt.h2 > hasclockrt.h ; echo -lrt > rt.lib ; \
 	else cat hasclockrt.h1 > hasclockrt.h ; : > rt.lib ; \