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29
30// ---
31// All Rights Reserved.
32//
33// Author: Craig Silverstein
34//
35// This file is needed for windows -- unittests are not part of the
36// perftools dll, but still want to include config.h just like the
37// dll does, so they can use internal tools and APIs for testing.
38//
39// The problem is that config.h declares PERFTOOLS_DLL_DECL to be
40// for exporting symbols, but the unittest needs to *import* symbols
41// (since it's not the dll).
42//
43// The solution is to have this file, which is just like config.h but
44// sets PERFTOOLS_DLL_DECL to do a dllimport instead of a dllexport.
45//
46// The reason we need this extra PERFTOOLS_DLL_DECL_FOR_UNITTESTS
47// variable is in case people want to set PERFTOOLS_DLL_DECL explicitly
48// to something other than __declspec(dllexport).  In that case, they
49// may want to use something other than __declspec(dllimport) for the
50// unittest case.  For that, we allow folks to define both
51// PERFTOOLS_DLL_DECL and PERFTOOLS_DLL_DECL_FOR_UNITTESTS explicitly.
52//
53// NOTE: This file is equivalent to config.h on non-windows systems,
54// which never defined PERFTOOLS_DLL_DECL_FOR_UNITTESTS and always
55// define PERFTOOLS_DLL_DECL to the empty string.
56
57#include "config.h"
58
59#undef PERFTOOLS_DLL_DECL
60#ifdef PERFTOOLS_DLL_DECL_FOR_UNITTESTS
61# define PERFTOOLS_DLL_DECL  PERFTOOLS_DLL_DECL_FOR_UNITTESTS
62#else
63# define PERFTOOLS_DLL_DECL  // if DLL_DECL_FOR_UNITTESTS isn't defined, use ""
64#endif
65