From 1d40729eaa35dd643efdf5e793e6a541e890f33a Mon Sep 17 00:00:00 2001
From: Peter Kuemmel <syntheticpp@gmx.net>
Date: Thu, 7 Jun 2012 23:34:48 +0200
Subject: [PATCH] Ninja: add dependency tracking for msvc with cldeps

---
 Source/cmNinjaTargetGenerator.cxx | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/Source/cmNinjaTargetGenerator.cxx b/Source/cmNinjaTargetGenerator.cxx
index e419a4d54..74b5c9213 100644
--- a/Source/cmNinjaTargetGenerator.cxx
+++ b/Source/cmNinjaTargetGenerator.cxx
@@ -330,12 +330,17 @@ cmNinjaTargetGenerator
   vars.Defines = "$DEFINES";
   vars.TargetPDB = "$TARGET_PDB";
 
+  bool cldeps = false;
+  const char* cc = this->GetMakefile()->GetDefinition("CMAKE_C_COMPILER");
+  if(cc && std::string(cc).find("cl.exe") != std::string::npos)
+    cldeps = true;
+
   std::string depfile;
   std::string depfileFlagsName = "CMAKE_DEPFILE_FLAGS_" + language;
   const char *depfileFlags =
     this->GetMakefile()->GetDefinition(depfileFlagsName.c_str());
-  if (depfileFlags) {
-    std::string depfileFlagsStr = depfileFlags;
+  if (depfileFlags || cldeps) {
+    std::string depfileFlagsStr = depfileFlags ? depfileFlags : "";
     depfile = "$out.d";
     cmSystemTools::ReplaceString(depfileFlagsStr, "<DEPFILE>",
                                  depfile.c_str());
@@ -364,6 +369,9 @@ cmNinjaTargetGenerator
   std::string cmdLine =
     this->GetLocalGenerator()->BuildCommandLine(compileCmds);
 
+  if(cldeps)
+      cmdLine = "cldeps.exe $out.d $out " + cmdLine;
+
   // Write the rule for compiling file of the given language.
   std::ostringstream comment;
   comment << "Rule for compiling " << language << " files.";