[PATCH] D89274: [WebAssembly] Use the new crt1-command.o if present.

[Dan Gohman via Phabricator via cfe-commits]

sunfish created this revision.
sunfish added a reviewer: sbc100.
Herald added subscribers: cfe-commits, ecnelises, jgravelle-google, dschuff.
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If crt1-command.o exists in the sysroot, the libc has new-style command
support, so use it.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D89274

Files:
  clang/lib/Driver/ToolChains/WebAssembly.cpp


Index: clang/lib/Driver/ToolChains/WebAssembly.cpp
===================================================================
--- clang/lib/Driver/ToolChains/WebAssembly.cpp
+++ clang/lib/Driver/ToolChains/WebAssembly.cpp
@@ -77,6 +77,12 @@
 
   const char *Crt1 = "crt1.o";
   const char *Entry = NULL;
+
+  // If crt1-command.o exists, it supports new-style commands, so use it.
+  // Otherwise, use the old crt1.o.
+  if (ToolChain.GetFilePath("crt1-command.o") != "crt1-command.o")
+    Crt1 = "crt1-command.o";
+
   if (const Arg *A = Args.getLastArg(options::OPT_mexec_model_EQ)) {
     StringRef CM = A->getValue();
     if (CM == "command") {


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