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ae65e281f3
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
68 lines
2.3 KiB
C++
68 lines
2.3 KiB
C++
//===- llvm/Support/Unix/Host.inc -------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the UNIX Host support.
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//
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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//=== WARNING: Implementation here must contain only generic UNIX code that
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//=== is guaranteed to work on *all* UNIX variants.
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//===----------------------------------------------------------------------===//
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#include "Unix.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Config/config.h"
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#include <cctype>
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#include <string>
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#include <sys/utsname.h>
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using namespace llvm;
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static std::string getOSVersion() {
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struct utsname info;
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if (uname(&info))
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return "";
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return info.release;
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}
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static std::string updateTripleOSVersion(std::string TargetTripleString) {
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// On darwin, we want to update the version to match that of the target.
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std::string::size_type DarwinDashIdx = TargetTripleString.find("-darwin");
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if (DarwinDashIdx != std::string::npos) {
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TargetTripleString.resize(DarwinDashIdx + strlen("-darwin"));
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TargetTripleString += getOSVersion();
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return TargetTripleString;
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}
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std::string::size_type MacOSDashIdx = TargetTripleString.find("-macos");
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if (MacOSDashIdx != std::string::npos) {
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TargetTripleString.resize(MacOSDashIdx);
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// Reset the OS to darwin as the OS version from `uname` doesn't use the
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// macOS version scheme.
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TargetTripleString += "-darwin";
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TargetTripleString += getOSVersion();
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}
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return TargetTripleString;
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}
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std::string sys::getDefaultTargetTriple() {
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std::string TargetTripleString =
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updateTripleOSVersion(LLVM_DEFAULT_TARGET_TRIPLE);
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// Override the default target with an environment variable named by
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// 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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TargetTripleString = EnvTriple;
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#endif
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return TargetTripleString;
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}
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