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The return value of sys::getDefaultTargetTriple, which is derived from -DLLVM_DEFAULT_TRIPLE, is used to construct tool names, default target, and in the future also to control the search path directly; as such it should be used textually, without interpretation by LLVM. Normalization of this value may lead to unexpected results, for example if we configure LLVM with -DLLVM_DEFAULT_TARGET_TRIPLE=x86_64-linux-gnu, normalization will transform that value to x86_64--linux-gnu. Driver will use that value to search for tools prefixed with x86_64--linux-gnu- which may be confusing. This is also inconsistent with the behavior of the --target flag which is taken as-is without any normalization and overrides the value of LLVM_DEFAULT_TARGET_TRIPLE. Users of sys::getDefaultTargetTriple already perform their own normalization as needed, so this change shouldn't impact existing logic. Differential Revision: https://reviews.llvm.org/D46910 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@332750 91177308-0d34-0410-b5e6-96231b3b80d8
35 lines
993 B
C++
35 lines
993 B
C++
//===- llvm/Support/Win32/Host.inc ------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the Win32 Host support.
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//
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//===----------------------------------------------------------------------===//
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#include "WindowsSupport.h"
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#include <cstdio>
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#include <string>
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using namespace llvm;
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static std::string updateTripleOSVersion(std::string Triple) {
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return Triple;
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}
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std::string sys::getDefaultTargetTriple() {
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const char *Triple = LLVM_DEFAULT_TARGET_TRIPLE;
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// Override the default target with an environment variable named by LLVM_TARGET_TRIPLE_ENV.
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#if defined(LLVM_TARGET_TRIPLE_ENV)
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if (const char *EnvTriple = std::getenv(LLVM_TARGET_TRIPLE_ENV))
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Triple = EnvTriple;
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#endif
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return Triple;
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}
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