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

[Dan Gohman via Phabricator via cfe-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rGf9c05fc39145: [WebAssembly] Use the new crt1-command.o if present. (authored by sunfish).

Changed prior to commit:
  https://reviews.llvm.org/D89274?vs=297698&id=323164#toc

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D89274/new/

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 +77,16 @@
 
   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. This is a temporary transition measure.
+  // Once WASI libc no longer needs to support LLVM versions which lack
+  // support for new-style command, it can make crt1.o the same as
+  // crt1-command.o. And once LLVM no longer needs to support WASI libc
+  // versions before that, it can switch to using crt1-command.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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