[flang-commits] [clang] [flang] [clang][driver] Fix -fveclib=ArmPL issue: with -nostdlib do not link against libm (PR #133578)

[Joseph Huber via flang-commits]

================
@@ -515,17 +515,19 @@ void tools::AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs,
       //
       // 1. On Linux, link only when actually needed.
       //
-      // 2. Prefer libm functions over libamath.
+      // 2. Prefer libm functions over libamath (when no -nostdlib in use).
       //
       // 3. Link against libm to resolve libamath dependencies.
       //
       if (Triple.isOSLinux()) {
         CmdArgs.push_back(Args.MakeArgString("--push-state"));
         CmdArgs.push_back(Args.MakeArgString("--as-needed"));
       }
-      CmdArgs.push_back(Args.MakeArgString("-lm"));
+      if (!Args.hasArg(options::OPT_nostdlib))
+        CmdArgs.push_back(Args.MakeArgString("-lm"));
       CmdArgs.push_back(Args.MakeArgString("-lamath"));
----------------
jhuber6 wrote:

I guess `-fvevlib` can be seen as an explicit request for libraries, so I can see it.

https://github.com/llvm/llvm-project/pull/133578