+#if defined(LLVM_ON_UNIX)
+const char EXESuffix[] = "";
+#elif defined (LLVM_ON_WIN32)
+const char EXESuffix[] = "exe";
+#endif
+
+/// Prepend the path to the program being executed
+/// to \p ExeName, given the value of argv[0] and the address of main()
+/// itself. This allows us to find another LLVM tool if it is built in the same
+/// directory. An empty string is returned on error; note that this function
+/// just mainpulates the path and doesn't check for executability.
+/// @brief Find a named executable.
+static std::string PrependMainExecutablePath(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.
+ std::string Main = sys::fs::getMainExecutable(Argv0, MainAddr);
+ StringRef Result = sys::path::parent_path(Main);
+
+ if (!Result.empty()) {
+ SmallString<128> Storage = Result;
+ sys::path::append(Storage, ExeName);
+ sys::path::replace_extension(Storage, EXESuffix);
+ return Storage.str();
+ }
+
+ return Result.str();
+}
+