From a1a30340a2eb0174f9f6911ee1e2cf4a36eaac96 Mon Sep 17 00:00:00 2001
From: Peter Collingbourne <peter@pcc.me.uk>
Date: Sun, 19 Feb 2012 21:38:10 +0000
Subject: [PATCH] Ninja: Import library support for Windows

---
 Source/cmLocalNinjaGenerator.cxx        |  1 +
 Source/cmNinjaNormalTargetGenerator.cxx | 21 +++++++++++++++++----
 Source/cmNinjaTargetGenerator.cxx       | 13 -------------
 3 files changed, 18 insertions(+), 17 deletions(-)

diff --git a/Source/cmLocalNinjaGenerator.cxx b/Source/cmLocalNinjaGenerator.cxx
index 687dbb87d..ea03cbb2e 100644
--- a/Source/cmLocalNinjaGenerator.cxx
+++ b/Source/cmLocalNinjaGenerator.cxx
@@ -31,6 +31,7 @@ cmLocalNinjaGenerator::cmLocalNinjaGenerator()
 #ifdef _WIN32
   this->WindowsShell = true;
 #endif
+  this->TargetImplib = "$TARGET_IMPLIB";
 }
 
 //----------------------------------------------------------------------------
diff --git a/Source/cmNinjaNormalTargetGenerator.cxx b/Source/cmNinjaNormalTargetGenerator.cxx
index 66714e953..9294a013f 100644
--- a/Source/cmNinjaNormalTargetGenerator.cxx
+++ b/Source/cmNinjaNormalTargetGenerator.cxx
@@ -172,10 +172,6 @@ cmNinjaNormalTargetGenerator
         i != linkCmds.end();
         ++i)
       {
-#ifdef _WIN32
-       // TODO TARGET_IMPLIB is empty
-       cmSystemTools::ReplaceString(*i, "/implib:", "");
-#endif
       this->GetLocalGenerator()->ExpandRuleVariables(*i, vars);
       }
     linkCmds.insert(linkCmds.begin(), "$PRE_LINK");
@@ -314,6 +310,9 @@ void cmNinjaNormalTargetGenerator::WriteLinkStatement()
     this->GetTarget()->GetFullPath(this->GetConfigName(),
                                    /*implib=*/false,
                                    /*realpath=*/true).c_str());
+  std::string targetOutputImplib = ConvertToNinjaPath(
+    this->GetTarget()->GetFullPath(this->GetConfigName(),
+                                   /*implib=*/true).c_str());
 
   // Compute the comment.
   std::ostringstream comment;
@@ -357,6 +356,11 @@ void cmNinjaNormalTargetGenerator::WriteLinkStatement()
     }
   }
 
+  if (!this->TargetNameImport.empty()) {
+    vars["TARGET_IMPLIB"] = this->GetLocalGenerator()->ConvertToOutputFormat(
+      targetOutputImplib.c_str(), cmLocalGenerator::SHELL);
+  }
+
   std::vector<cmCustomCommand> *cmdLists[3] = {
     &this->GetTarget()->GetPreBuildCommands(),
     &this->GetTarget()->GetPreLinkCommands(),
@@ -434,6 +438,15 @@ void cmNinjaNormalTargetGenerator::WriteLinkStatement()
     }
   }
 
+  if (!this->TargetNameImport.empty()) {
+    // Since using multiple outputs would mess up the $out variable, use an
+    // alias for the import library.
+    cmGlobalNinjaGenerator::WritePhonyBuild(this->GetBuildFileStream(),
+                                            "Alias for import library.",
+                                            cmNinjaDeps(1, targetOutputImplib),
+                                            cmNinjaDeps(1, targetOutputReal));
+  }
+
   // Add aliases for the file name and the target name.
   this->GetGlobalGenerator()->AddTargetAlias(this->TargetNameOut,
                                              this->GetTarget());
diff --git a/Source/cmNinjaTargetGenerator.cxx b/Source/cmNinjaTargetGenerator.cxx
index 1a8d13d41..8a563b640 100644
--- a/Source/cmNinjaTargetGenerator.cxx
+++ b/Source/cmNinjaTargetGenerator.cxx
@@ -223,22 +223,9 @@ cmNinjaDeps cmNinjaTargetGenerator::ComputeLinkDeps() const
   if(!cli)
     return cmNinjaDeps();
 
-
-#ifndef _WIN32
   const std::vector<std::string> &deps = cli->GetDepends();
   cmNinjaDeps result(deps.size());
   std::transform(deps.begin(), deps.end(), result.begin(), MapToNinjaPath());
-#else
-  // TODO The ninja generator misses a lot on Windows.
-  //      This hack avoids a problem when a Dll is build:
-  //      It builds the .dll but uses the .lib which is then unknown to ninja.
-  cmNinjaDeps result;
-  for(unsigned i = 0; i < cli->GetItems().size(); ++i) {
-    if( cli->GetItems()[i].Target ) {
-      result.push_back( cli->GetItems()[i].Target->GetName() );
-    }
-  }
-#endif
   return result;
 }