[llvm-rc] Use proper search algorithm for finding resources.

Previously we would only look in the current directory for a
resource, which might not be the same as the directory of the
rc file.  Furthermore, MSVC rc supports a /I option, and can
also look in the system environment.  This patch adds support
for this search algorithm.

Differential Revision: https://reviews.llvm.org/D38740

llvm-svn: 315499

1 files changed, 4 insertions, 0 deletions

diff --git a/llvm/tools/llvm-rc/ResourceScriptParser.cpp b/llvm/tools/llvm-rc/ResourceScriptParser.cpp
index 4acae313558..769b47a20bd 100644
--- a/llvm/tools/llvm-rc/ResourceScriptParser.cpp
+++ b/llvm/tools/llvm-rc/ResourceScriptParser.cpp
@@ -12,6 +12,10 @@
 //===---------------------------------------------------------------------===//
 
 #include "ResourceScriptParser.h"
+#include "llvm/Option/ArgList.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/Process.h"
 
 // Take an expression returning llvm::Error and forward the error if it exists.
 #define RETURN_IF_ERROR(Expr)                                                  \