From 33d3a8cc61efb2d01565f41afdd7240a120f189f Mon Sep 17 00:00:00 2001
From: Roberto Santalla <roobre@users.noreply.github.com>
Date: Tue, 7 Jul 2020 11:53:27 +0200
Subject: [PATCH] doc: fix documentation error in usage section

The example provided in the documentation used a different name for g_pFuncTableInfo, whic caused compilation to fail in GPAIL_LoadApi due to an undefined symbol:

    /tmp/ccuhxdcO.o: In function `GPAIL_LoadApi(GPA_API_Type, char const*)':
    main.cpp:(.text+0x502): undefined reference to `g_pFuncTableInfo'

The documentation now includes the proper snippet taken from `include/gpu_perf_api_interface_loader.h`
---
 docs/sphinx/source/usage.rst | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/docs/sphinx/source/usage.rst b/docs/sphinx/source/usage.rst
index c90727fa..a61888b8 100644
--- a/docs/sphinx/source/usage.rst
+++ b/docs/sphinx/source/usage.rst
@@ -65,9 +65,10 @@ initialize the DirectX 12 version of GPA:
 
     #include "GPAInterfaceLoader.h"
 
+    #ifdef __cplusplus
     GPAApiManager* GPAApiManager::m_pGpaApiManager = nullptr;
-
-    GPAFunctionTable* pGpaFunctionTable = nullptr;
+    #endif
+    GPAFuncTableInfo* g_pFuncTableInfo = NULL;
 
     bool InitializeGPA()
     {