Make clang/test/Index/pch-from-libclang.c pass in more places

- fixes the test on macOS with LLVM_ENABLE_PIC=OFF
- together with D57343, gets the test to pass on Windows
- makes it run everywhere (it seems to just pass on Linux)

The main change is to pull out the resource directory computation into a
function shared by all 3 places that do it. In CIndexer.cpp, this now works no
matter if libclang is in lib/ or bin/ or statically linked to a binary in bin/.


Differential Revision: https://reviews.llvm.org/D57345

llvm-svn: 352803

1 files changed, 2 insertions, 12 deletions

diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index dbc29e24aee..05cce3c9094 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -26,6 +26,7 @@
 #include "clang/Basic/Visibility.h"
 #include "clang/Basic/XRayInstr.h"
 #include "clang/Config/config.h"
+#include "clang/Driver/Driver.h"
 #include "clang/Driver/DriverDiagnostic.h"
 #include "clang/Driver/Options.h"
 #include "clang/Frontend/CommandLineSourceLoc.h"
@@ -1893,18 +1894,7 @@ std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
                                                  void *MainAddr) {
   std::string ClangExecutable =
       llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
-  StringRef Dir = llvm::sys::path::parent_path(ClangExecutable);
-
-  // Compute the path to the resource directory.
-  StringRef ClangResourceDir(CLANG_RESOURCE_DIR);
-  SmallString<128> P(Dir);
-  if (ClangResourceDir != "")
-    llvm::sys::path::append(P, ClangResourceDir);
-  else
-    llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX,
-                            "clang", CLANG_VERSION_STRING);
-
-  return P.str();
+  return Driver::GetResourcesPath(ClangExecutable, CLANG_RESOURCE_DIR);
 }
 
 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args,