Add stuff to add platform-specific compiler flags; currently, we have

only flags for HP's ANSI C compiler, as suggested by Jost Martin.

svn path=/trunk/; revision=1517

configure.in

@@ -1,4 +1,4 @@
-# $Id: configure.in,v 1.79 2000/01/21 06:18:16 guy Exp $
+# $Id: configure.in,v 1.80 2000/01/21 08:44:40 guy Exp $
 dnl
 dnl Process this file with autoconf 2.13 or later to produce a
 dnl configure script; 2.12 doesn't generate a "configure" script that
@@ -40,6 +40,34 @@ else
   AC_MSG_RESULT(no)
 fi
 
+#
+# Add any platform-specific compiler flags needed.
+#
+AC_MSG_CHECKING(for platform-specific compiler flags)
+if test "x$GCC" = x
+then
+	#
+	# Not GCC - assume it's the vendor's compiler.
+	#
+	case "$host_os" in
+	hpux*)
+		#
+		# HP's ANSI C compiler; flags suggested by Jost Martin.
+		# "-Aa" for ANSI C
+		# "-Ae" for extensions to ANSI, for "long long".
+		# "+O2", for optimization.  XXX - works with "-g"?
+		#
+		CFLAGS="-Aa -Ae +O2 $CFLAGS"
+		AC_MSG_RESULT(HP ANSI C compiler - added -Aa -Ae +O2)
+		;;
+	*)
+		AC_MSG_RESULT(none needed)
+		;;
+	esac
+else
+	AC_MSG_RESULT(none needed)
+fi
+
 #
 # Arrange that we search for header files in the source directory
 # and in its "wiretap" subdirectory, as well as in "/usr/local/include",