diff --git a/configure.inc b/configure.inc
index 7bb335f..705128b 100755
--- a/configure.inc
+++ b/configure.inc
@@ -183,27 +183,33 @@ AC_CHECK_HEADERS () {
 AC_CHECK_FUNCS () {
     AC_PROG_CC
 
-F=$1
-shift
-rm -f /tmp/ngc$$.c
+    B=`echo "$1" | sed -e 's/(.*)//'`
+
+    case "$B" in
+    "$1") F="$1()" ;;
+    *)    F="$1" ;;
+    esac
 
-while [ "$1" ]; do
-    echo "#include <$1>" >> /tmp/ngc$$.c
     shift
-done
+    rm -f /tmp/ngc$$.c
+
+    while [ "$1" ]; do
+	echo "#include <$1>" >> /tmp/ngc$$.c
+	shift
+    done
 
     cat >> /tmp/ngc$$.c << EOF
 main()
 {
 
-    $F();
+    $F;
 }
 EOF
 
-    LOGN "looking for the $F function"
+    LOGN "looking for the $B function"
 
     if $AC_CC -o /tmp/ngc$$ /tmp/ngc$$.c $LIBS; then
-	AC_DEFINE `echo ${2:-HAVE_$F} | $AC_UPPERCASE` 1
+	AC_DEFINE `echo ${2:-HAVE_$B} | $AC_UPPERCASE` 1
 	TLOG " (found)"
 	rc=0
     else
diff --git a/configure.sh b/configure.sh
index 50cd259..caf2c8a 100755
--- a/configure.sh
+++ b/configure.sh
@@ -76,6 +76,14 @@ else
     AC_DEFINE 'INITRNG(x)' '(void)1'
 fi
 
+if AC_CHECK_FUNCS 'bzero((char*)0,0)'; then
+    : # Yay
+elif AC_CHECK_FUNCS 'memset((char*)0,0,0)'; then
+    AC_DEFINE 'bzero(p,s)' 'memset(p,s,0)'
+else
+    AC_FAIL "$TARGET requires bzero or memset"
+fi
+
 if AC_CHECK_FUNCS random; then
     AC_DEFINE 'COINTOSS()' '(random()&1)'
 elif AC_CHECK_FUNCS rand; then