1 files changed, 31 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/common/system_utils.cpp b/gfx/angle/checkout/src/common/system_utils.cpp
new file mode 100644
index 0000000000..257fc42c2e
--- /dev/null
+++ b/gfx/angle/checkout/src/common/system_utils.cpp
@@ -0,0 +1,31 @@
+//
+// Copyright 2018 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// system_utils.cpp: Implementation of common functions
+
+#include "system_utils.h"
+
+namespace angle
+{
+bool PrependPathToEnvironmentVar(const char *variableName, const char *path)
+{
+    std::string oldValue = GetEnvironmentVar(variableName);
+    const char *newValue = nullptr;
+    std::string buf;
+    if (oldValue.empty())
+    {
+        newValue = path;
+    }
+    else
+    {
+        buf = path;
+        buf += GetPathSeparator();
+        buf += oldValue;
+        newValue = buf.c_str();
+    }
+    return SetEnvironmentVar(variableName, newValue);
+}
+}  // namespace angle