117680Spst//===-- Interpreter.h - Abstract Execution Engine Interface -----*- C++ -*-===// 239297Sfenner// 317680Spst// The LLVM Compiler Infrastructure 417680Spst// 517680Spst// This file is distributed under the University of Illinois Open Source 617680Spst// License. See LICENSE.TXT for details. 717680Spst// 817680Spst//===----------------------------------------------------------------------===// 917680Spst// 1017680Spst// This file forces the interpreter to link in on certain operating systems. 1117680Spst// (Windows). 1217680Spst// 1317680Spst//===----------------------------------------------------------------------===// 1417680Spst 1517680Spst#ifndef LLVM_EXECUTIONENGINE_INTERPRETER_H 1617680Spst#define LLVM_EXECUTIONENGINE_INTERPRETER_H 1717680Spst 1817680Spst#include "llvm/ExecutionEngine/ExecutionEngine.h" 1917680Spst#include <cstdlib> 2017680Spst 21190207Srpauloextern "C" void LLVMLinkInInterpreter(); 2217680Spst 2317680Spstnamespace { 2417680Spst struct ForceInterpreterLinking { 2517680Spst ForceInterpreterLinking() { 2617680Spst // We must reference the interpreter in such a way that compilers will not 2717680Spst // delete it all as dead code, even with whole program optimization, 2817680Spst // yet is effectively a NO-OP. As the compiler isn't smart enough 2917680Spst // to know that getenv() never returns -1, this will do the job. 3017680Spst if (std::getenv("bar") != (char*) -1) 31 return; 32 33 LLVMLinkInInterpreter(); 34 } 35 } ForceInterpreterLinking; 36} 37 38#endif 39