[PATCH] D43621: [Driver] Allow using a canonical form of '-fuse-ld=' when cross-compiling on Windows.

[Igor Kudrin via Phabricator via cfe-commits]

ikudrin created this revision.
ikudrin added reviewers: phosek, Hahnfeld, logan, rnk.
ikudrin added a project: clang.

Right now, we have to add an `.exe` suffix when using this switch, like `-fuse-ld=lld.exe`.
If the suffix is omitted, `llvm::sys::fs::exists()` cannot find the file on Windows,
while `llvm::sys::fs::can_Execute()` automatically tries both variants.


Repository:
  rC Clang

https://reviews.llvm.org/D43621

Files:
  lib/Driver/ToolChain.cpp


Index: lib/Driver/ToolChain.cpp
===================================================================
--- lib/Driver/ToolChain.cpp
+++ lib/Driver/ToolChain.cpp
@@ -412,7 +412,7 @@
   if (llvm::sys::path::is_absolute(UseLinker)) {
     // If we're passed what looks like an absolute path, don't attempt to
     // second-guess that.
-    if (llvm::sys::fs::exists(UseLinker))
+    if (llvm::sys::fs::can_execute(UseLinker))
       return UseLinker;
   } else if (UseLinker.empty() || UseLinker == "ld") {
     // If we're passed -fuse-ld= with no argument, or with the argument ld,
@@ -427,7 +427,7 @@
     LinkerName.append(UseLinker);
 
     std::string LinkerPath(GetProgramPath(LinkerName.c_str()));
-    if (llvm::sys::fs::exists(LinkerPath))
+    if (llvm::sys::fs::can_execute(LinkerPath))
       return LinkerPath;
   }
 


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