void tools::AddRunTimeLibs(const ToolChain &TC, const Driver &D, ArgStringList &CmdArgs, const ArgList &Args) { // Make use of compiler-rt if --rtlib option is used ToolChain::RuntimeLibType RLT = TC.GetRuntimeLibType(Args); switch (RLT) { case ToolChain::RLT_CompilerRT: CmdArgs.push_back(TC.getCompilerRTArgString(Args, "builtins")); break; case ToolChain::RLT_Libgcc: // Make sure libgcc is not used under MSVC environment by default if (TC.getTriple().isKnownWindowsMSVCEnvironment()) { // Issue error diagnostic if libgcc is explicitly specified // through command line as --rtlib option argument. if (Args.hasArg(options::OPT_rtlib_EQ)) { TC.getDriver().Diag(diag::err_drv_unsupported_rtlib_for_platform) << Args.getLastArg(options::OPT_rtlib_EQ)->getValue() << "MSVC"; } } else AddLibgcc(TC.getTriple(), D, CmdArgs, Args); break; } }