Check in LLVM r95781.

1 files changed, 55 insertions, 0 deletions

diff --git a/lib/Support/SystemUtils.cpp b/lib/Support/SystemUtils.cpp
new file mode 100644
index 0000000..299032f
--- /dev/null
+++ b/lib/Support/SystemUtils.cpp
@@ -0,0 +1,55 @@
+//===- SystemUtils.cpp - Utilities for low-level system tasks -------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains functions used to do a variety of low-level, often
+// system-specific, tasks.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/SystemUtils.h"
+#include "llvm/System/Process.h"
+#include "llvm/System/Program.h"
+#include "llvm/Support/raw_ostream.h"
+using namespace llvm;
+
+bool llvm::CheckBitcodeOutputToConsole(raw_ostream &stream_to_check,
+                                       bool print_warning) {
+  if (stream_to_check.is_displayed()) {
+    if (print_warning) {
+      errs() << "WARNING: You're attempting to print out a bitcode file.\n"
+             << "This is inadvisable as it may cause display problems. If\n"
+             << "you REALLY want to taste LLVM bitcode first-hand, you\n"
+             << "can force output with the `-f' option.\n\n";
+    }
+    return true;
+  }
+  return false;
+}
+
+/// FindExecutable - Find a named executable, giving the argv[0] of program
+/// being executed. This allows us to find another LLVM tool if it is built in
+/// the same directory.  If the executable cannot be found, return an
+/// empty string.
+/// @brief Find a named executable.
+#undef FindExecutable   // needed on windows :(
+sys::Path llvm::FindExecutable(const std::string &ExeName,
+                               const char *Argv0, void *MainAddr) {
+  // Check the directory that the calling program is in.  We can do
+  // this if ProgramPath contains at least one / character, indicating that it
+  // is a relative path to the executable itself.
+  sys::Path Result = sys::Path::GetMainExecutable(Argv0, MainAddr);
+  Result.eraseComponent();
+  if (!Result.isEmpty()) {
+    Result.appendComponent(ExeName);
+    if (Result.canExecute())
+      return Result;
+  }
+
+  return sys::Path();
+}