Remove __stdcall from non-windows builds.

src/common/event_tracer.cpp

@@ -14,8 +14,8 @@ AddTraceEventFunc g_addTraceEvent;
 
 extern "C" {
 
-void __stdcall SetTraceFunctionPointers(GetCategoryEnabledFlagFunc getCategoryEnabledFlag,
-                                        AddTraceEventFunc addTraceEvent)
+void TRACE_ENTRY SetTraceFunctionPointers(GetCategoryEnabledFlagFunc getCategoryEnabledFlag,
+                                          AddTraceEventFunc addTraceEvent)
 {
     gl::g_getCategoryEnabledFlag = getCategoryEnabledFlag;
     gl::g_addTraceEvent = addTraceEvent;

src/common/event_tracer.h

@@ -5,6 +5,14 @@
 #ifndef COMMON_EVENT_TRACER_H_
 #define COMMON_EVENT_TRACER_H_
 
+#if !defined(TRACE_ENTRY)
+#if defined(_WIN32)
+#define TRACE_ENTRY __stdcall
+#else
+#define TRACE_ENTRY
+#endif // // _WIN32
+#endif //TRACE_ENTRY
+
 extern "C" {
 
 typedef const unsigned char* (*GetCategoryEnabledFlagFunc)(const char* name);
@@ -14,8 +22,8 @@ typedef void (*AddTraceEventFunc)(char phase, const unsigned char* categoryGroup
                                   unsigned char flags);
 
 // extern "C" so that it has a reasonable name for GetProcAddress.
-void __stdcall SetTraceFunctionPointers(GetCategoryEnabledFlagFunc get_category_enabled_flag,
-                                        AddTraceEventFunc add_trace_event_func);
+void TRACE_ENTRY SetTraceFunctionPointers(GetCategoryEnabledFlagFunc get_category_enabled_flag,
+                                          AddTraceEventFunc add_trace_event_func);
 
 }