Debugging: added header and build flag for valgrind run-time

extensions.

Signed-off-by: James Yonan <james@openvpn.net>

openvpn/common/valgrind.hpp

@@ -0,0 +1,29 @@
+//    OpenVPN -- An application to securely tunnel IP networks
+//               over a single port, with support for SSL/TLS-based
+//               session authentication and key exchange,
+//               packet encryption, packet authentication, and
+//               packet compression.
+//
+//    Copyright (C) 2012-2017 OpenVPN Technologies, Inc.
+//
+//    This program is free software: you can redistribute it and/or modify
+//    it under the terms of the GNU General Public License Version 3
+//    as published by the Free Software Foundation.
+//
+//    This program is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//    GNU General Public License for more details.
+//
+//    You should have received a copy of the GNU General Public License
+//    along with this program in the COPYING file.
+//    If not, see <http://www.gnu.org/licenses/>.
+
+#pragma once
+
+#if defined(HAVE_VALGRIND)
+#include <valgrind/memcheck.h>
+#define OPENVPN_MAKE_MEM_DEFINED(addr, len) VALGRIND_MAKE_MEM_DEFINED(addr, len)
+#else
+#define OPENVPN_MAKE_MEM_DEFINED(addr, len)
+#endif

scripts/build

@@ -48,6 +48,7 @@ if [ -z "$1" ]; then
     echo " LZ4_SYS=1 -- build with system LZ4 compression library"
     echo " SNAP=1 -- build with Snappy compression library"
     echo " CITY=1 -- build with Cityhash hash library"
+    echo " VAL=1 -- build with valgrind run-time extensions"
     echo " JAVA=1 -- build with JVM"
     echo ' EXTRA_CPP="foo1.cpp foo2.cpp" -- add extra .cpp files'
     echo " GTEST_DIR=<dir> -- specify googletest tree, required for building unit tests"
@@ -240,6 +241,11 @@ if [ "$CITY" = "1" ]; then
     CPPFLAGS="$CPPFLAGS -DHAVE_CITYHASH"
 fi
 
+# Valgrind
+if [ "$VAL" = "1" ]; then
+    CPPFLAGS="$CPPFLAGS -DHAVE_VALGRIND"
+fi
+
 # JVM
 if [ "$JAVA" = "1" ]; then
     if [ -z "$JAVA_HOME" ]; then