From 5901699672cce82d9622a02c4c7d22889029ee0c Mon Sep 17 00:00:00 2001
From: Craig Scott <craig.scott@crascit.com>
Date: Thu, 8 Mar 2018 20:09:45 +1100
Subject: cmDepends: Remove attempt to change directory that always fails

Nothing ever set `CompileDirectory` except `SetDirectory()`, but
nothing ever called that function. Therefore, `CompileDirectory`
was always empty for the attempt to change directory in `Check()`,
which therefore would always fail. Nothing was checking the result
and the code was always going to have no effect.
---
 Source/cmDepends.cxx | 7 +------
 Source/cmDepends.h   | 6 ------
 2 files changed, 1 insertion(+), 12 deletions(-)

diff --git a/Source/cmDepends.cxx b/Source/cmDepends.cxx
index cdab671..4716e14 100644
--- a/Source/cmDepends.cxx
+++ b/Source/cmDepends.cxx
@@ -7,7 +7,6 @@
 #include "cmLocalGenerator.h"
 #include "cmMakefile.h"
 #include "cmSystemTools.h"
-#include "cmWorkingDirectory.h"
 
 #include "cmsys/FStream.hxx"
 #include <sstream>
@@ -15,8 +14,7 @@
 #include <utility>
 
 cmDepends::cmDepends(cmLocalGenerator* lg, const char* targetDir)
-  : CompileDirectory()
-  , LocalGenerator(lg)
+  : LocalGenerator(lg)
   , Verbose(false)
   , FileComparison(nullptr)
   , TargetDirectory(targetDir)
@@ -73,9 +71,6 @@ bool cmDepends::Finalize(std::ostream& /*unused*/, std::ostream& /*unused*/)
 bool cmDepends::Check(const char* makeFile, const char* internalFile,
                       std::map<std::string, DependencyVector>& validDeps)
 {
-  // Dependency checks must be done in proper working directory.
-  cmWorkingDirectory workdir(this->CompileDirectory);
-
   // Check whether dependencies must be regenerated.
   bool okay = true;
   cmsys::ifstream fin(internalFile);
diff --git a/Source/cmDepends.h b/Source/cmDepends.h
index a4fee3c..4b9e05a 100644
--- a/Source/cmDepends.h
+++ b/Source/cmDepends.h
@@ -31,9 +31,6 @@ public:
       path from the build directory to the target file.  */
   cmDepends(cmLocalGenerator* lg = nullptr, const char* targetDir = "");
 
-  /** at what level will the compile be done from */
-  void SetCompileDirectory(const char* dir) { this->CompileDirectory = dir; }
-
   /** Set the local generator for the directory in which we are
       scanning dependencies.  This is not a full local generator; it
       has been setup to do relative path conversions for the current
@@ -95,9 +92,6 @@ protected:
   virtual bool Finalize(std::ostream& makeDepends,
                         std::ostream& internalDepends);
 
-  // The directory in which the build rule for the target file is executed.
-  std::string CompileDirectory;
-
   // The local generator.
   cmLocalGenerator* LocalGenerator;
 
-- 
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