Added script for verifying that all installed include files compile

without including other files first, and when compiled with a C++
compiler

util/check-instincludes.sh

@@ -0,0 +1,63 @@
+#!/bin/sh
+#
+# Copyright (C) 2000  Internet Software Consortium.
+# 
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+# ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+# CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+# DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+# PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+# SOFTWARE.
+
+#
+# Check the installed bind9 header files to make sure that no header
+# depends on another header having been included first, and that
+# they all compile as C++.
+#
+
+test -f ./util/conf.sh || {
+    echo "$0: run from top of bind9 source tree" >&2;
+    exit 1;
+}
+
+# set $prefix
+. ./util/conf.sh
+
+tmp=/tmp/thdr$$.tmp
+
+status=0
+
+echo "Checking header independence and C++ compatibility..."
+
+# Make a list of header files.
+(cd $prefix/include; find . -name '*.h' -print | sed 's!^./!!') > $tmp
+
+# Check each header.
+while read h
+do
+    echo " - <$h>"
+
+    # Build a test program.
+    cat <<EOF >test.cc
+#include <$h>
+EOF
+
+    # Compile the test program.
+    if 
+       gcc  -W -Wall -Wmissing-prototypes -Wcast-qual -Wwrite-strings  -I/usr/pkg/pthreads/include -I$prefix/include -c test.cc 2>&1
+    then
+       :
+    else
+       status=1
+    fi
+done <$tmp
+
+rm -f test.c test.o $tmp
+
+exit $status

util/conf.sh

@@ -0,0 +1 @@
+prefix=/local/instbind