Ninja: Refactor lookup of cmcldeps location

This executable comes with CMake so just compute its location in
cmSystemTools instead of storing it in compiler information modules.

Modules/CMakeCCompiler.cmake.in

@@ -60,5 +60,4 @@ set(CMAKE_C_IMPLICIT_LINK_LIBRARIES "@CMAKE_C_IMPLICIT_LINK_LIBRARIES@")
 set(CMAKE_C_IMPLICIT_LINK_DIRECTORIES "@CMAKE_C_IMPLICIT_LINK_DIRECTORIES@")
 set(CMAKE_C_IMPLICIT_LINK_FRAMEWORK_DIRECTORIES "@CMAKE_C_IMPLICIT_LINK_FRAMEWORK_DIRECTORIES@")
 
-@SET_CMAKE_CMCLDEPS_EXECUTABLE@
 @SET_CMAKE_CL_SHOWINCLUDES_PREFIX@

Modules/CMakeCXXCompiler.cmake.in

@@ -61,5 +61,4 @@ set(CMAKE_CXX_IMPLICIT_LINK_LIBRARIES "@CMAKE_CXX_IMPLICIT_LINK_LIBRARIES@")
 set(CMAKE_CXX_IMPLICIT_LINK_DIRECTORIES "@CMAKE_CXX_IMPLICIT_LINK_DIRECTORIES@")
 set(CMAKE_CXX_IMPLICIT_LINK_FRAMEWORK_DIRECTORIES "@CMAKE_CXX_IMPLICIT_LINK_FRAMEWORK_DIRECTORIES@")
 
-@SET_CMAKE_CMCLDEPS_EXECUTABLE@
 @SET_CMAKE_CL_SHOWINCLUDES_PREFIX@

Modules/CMakeClDeps.cmake

@@ -21,7 +21,6 @@
 #
 
 if(CMAKE_GENERATOR MATCHES "Ninja" AND CMAKE_C_COMPILER AND CMAKE_COMMAND)
-  string(REPLACE "cmake.exe" "cmcldeps.exe"  CMAKE_CMCLDEPS_EXECUTABLE ${CMAKE_COMMAND})
   set(showdir ${CMAKE_BINARY_DIR}/CMakeFiles/ShowIncludes)
   file(WRITE ${showdir}/foo.h "\n")
   file(WRITE ${showdir}/main.c "#include \"foo.h\" \nint main(){}\n")
@@ -29,6 +28,5 @@ if(CMAKE_GENERATOR MATCHES "Ninja" AND CMAKE_C_COMPILER AND CMAKE_COMMAND)
                   WORKING_DIRECTORY ${showdir} OUTPUT_VARIABLE outLine)
   string(REGEX MATCH "\n([^:]*:[^:]*:[ \t]*)" tmp "${outLine}")
   set(localizedPrefix "${CMAKE_MATCH_1}")
-  set(SET_CMAKE_CMCLDEPS_EXECUTABLE   "set(CMAKE_CMCLDEPS_EXECUTABLE \"${CMAKE_CMCLDEPS_EXECUTABLE}\")")
   set(SET_CMAKE_CL_SHOWINCLUDES_PREFIX "set(CMAKE_CL_SHOWINCLUDES_PREFIX \"${localizedPrefix}\")")
 endif()

Source/cmNinjaTargetGenerator.cxx

@@ -371,7 +371,7 @@ cmNinjaTargetGenerator
                         mf->GetSafeDefinition("CMAKE_C_COMPILER") :
                         mf->GetSafeDefinition("CMAKE_CXX_COMPILER");
       cldeps =  "\"";
-      cldeps += mf->GetSafeDefinition("CMAKE_CMCLDEPS_EXECUTABLE");
+      cldeps += cmSystemTools::GetCMClDepsCommand();
       cldeps += "\" " + lang + " $in \"$DEP_FILE\" $out \"";
       cldeps += mf->GetSafeDefinition("CMAKE_CL_SHOWINCLUDES_PREFIX");
       cldeps += "\" \"" + cl + "\" ";

Source/cmSystemTools.cxx

@@ -2216,6 +2216,7 @@ static std::string cmSystemToolsCTestCommand;
 static std::string cmSystemToolsCPackCommand;
 static std::string cmSystemToolsCMakeCursesCommand;
 static std::string cmSystemToolsCMakeGUICommand;
+static std::string cmSystemToolsCMClDepsCommand;
 static std::string cmSystemToolsCMakeRoot;
 void cmSystemTools::FindCMakeResources(const char* argv0)
 {
@@ -2308,6 +2309,13 @@ void cmSystemTools::FindCMakeResources(const char* argv0)
     {
     cmSystemToolsCMakeCursesCommand = "";
     }
+  cmSystemToolsCMClDepsCommand = exe_dir;
+  cmSystemToolsCMClDepsCommand += "/cmcldeps";
+  cmSystemToolsCMClDepsCommand += cmSystemTools::GetExecutableExtension();
+  if(!cmSystemTools::FileExists(cmSystemToolsCMClDepsCommand.c_str()))
+    {
+    cmSystemToolsCMClDepsCommand = "";
+    }
 
 #ifdef CMAKE_BUILD_WITH_CMAKE
   // Install tree has "<prefix>/bin/cmake" and "<prefix><CMAKE_DATA_DIR>".
@@ -2374,6 +2382,12 @@ std::string const& cmSystemTools::GetCMakeGUICommand()
   return cmSystemToolsCMakeGUICommand;
 }
 
+//----------------------------------------------------------------------------
+std::string const& cmSystemTools::GetCMClDepsCommand()
+{
+  return cmSystemToolsCMClDepsCommand;
+}
+
 //----------------------------------------------------------------------------
 std::string const& cmSystemTools::GetCMakeRoot()
 {

Source/cmSystemTools.h

@@ -426,6 +426,7 @@ public:
   static std::string const& GetCMakeCommand();
   static std::string const& GetCMakeGUICommand();
   static std::string const& GetCMakeCursesCommand();
+  static std::string const& GetCMClDepsCommand();
   static std::string const& GetCMakeRoot();
 
   /** Echo a message in color using KWSys's Terminal cprintf.  */