Introduce -nostdlib++ flag to disable linking the C++ standard library.
Projects that want to statically link their own C++ standard library currently
need to pass -nostdlib or -nodefaultlibs, which also disables linking of the
builtins library, -lm, and so on. Alternatively, they could use `clang` instead
of `clang++`, but that already disables implicit addition of -lm on some
toolchains.
Add a dedicated flag -nostdlib++ that disables just linking of libc++ /
libstdc++. This is analogous to -nostdinc++.
https://reviews.llvm.org/D35780
llvm-svn: 308997
diff --git a/clang/lib/Driver/ToolChains/NetBSD.cpp b/clang/lib/Driver/ToolChains/NetBSD.cpp
index e89ee37..acc5627 100644
--- a/clang/lib/Driver/ToolChains/NetBSD.cpp
+++ b/clang/lib/Driver/ToolChains/NetBSD.cpp
@@ -278,7 +278,8 @@
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
addOpenMPRuntime(CmdArgs, getToolChain(), Args);
if (D.CCCIsCXX()) {
- getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
+ if (getToolChain().ShouldLinkCXXStdlib(Args))
+ getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
CmdArgs.push_back("-lm");
}
if (NeedsSanitizerDeps)