Introduce FindTargetProgramPath to check for a target-specific helper

program and fallback to plain version otherwise. Use this for the NetBSD
target to make it try e.g. i486--netbsdelf-as and -ld for target
i486--netbsdelf.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127996 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 15 insertions, 4 deletions

diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 545645b9bd..5a4b7e29ba 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -37,6 +37,17 @@
 using namespace clang::driver;
 using namespace clang::driver::tools;
 
+/// FindTargetProgramPath - Return path of the target specific version of
+/// ProgName.  If it doesn't exist, return path of ProgName itself.
+static std::string FindTargetProgramPath(const ToolChain &TheToolChain,
+                                         const char *ProgName) {
+  std::string Executable(TheToolChain.getTripleString() + "-" + ProgName);
+  std::string Path(TheToolChain.GetProgramPath(Executable.c_str()));
+  if (Path != Executable)
+    return Path;
+  return TheToolChain.GetProgramPath(ProgName);
+}
+
 /// CheckPreprocessingOptions - Perform some validation of preprocessing
 /// arguments that is shared with gcc.
 static void CheckPreprocessingOptions(const Driver &D, const ArgList &Args) {
@@ -3427,8 +3438,8 @@ void netbsd::Assemble::ConstructJob(Compilation &C, const JobAction &JA,
     CmdArgs.push_back(II.getFilename());
   }
 
-  const char *Exec =
-    Args.MakeArgString(getToolChain().GetProgramPath("as"));
+  const char *Exec = Args.MakeArgString(FindTargetProgramPath(getToolChain(),
+                                                              "as"));
   C.addCommand(new Command(JA, *this, Exec, CmdArgs));
 }
 
@@ -3541,8 +3552,8 @@ void netbsd::Link::ConstructJob(Compilation &C, const JobAction &JA,
                                                                     "crtn.o")));
   }
 
-  const char *Exec =
-    Args.MakeArgString(getToolChain().GetProgramPath("ld"));
+  const char *Exec = Args.MakeArgString(FindTargetProgramPath(getToolChain(),
+                                                              "ld"));
   C.addCommand(new Command(JA, *this, Exec, CmdArgs));
 }