Move up to C++14

Change-Id: I9ab6c8537a5b5fd7f0a01848b42886961416011f
Signed-off-by: Zane Shelley <zshelle@us.ibm.com>
diff --git a/README.md b/README.md
index 3ec90a8..d377aa1 100644
--- a/README.md
+++ b/README.md
@@ -54,8 +54,8 @@
 Development Notes
 -----------------
 
- * The Hostboot and FSP environments only support up to **C++11**. Therefore,
-   this library cannot use anything newer at this time.
+ * The Hostboot environment only support up to **C++14**. Therefore, this
+   library cannot use anything newer at this time.
  * Hostboot has a very limited environment. It does not include libc or
    libstdc++. However, Hostboot has implemented select functions from those
    libraries as needed. For details, you can reference `src/include/` in the
diff --git a/meson.build b/meson.build
index 775242d..68a303a 100644
--- a/meson.build
+++ b/meson.build
@@ -3,7 +3,7 @@
         default_options: [
             'warning_level=3',
             'werror=true',
-            'cpp_std=c++11',
+            'cpp_std=c++14',
             'cpp_args=-Wno-unused-parameter'
        ])