From f6da044080d854b9ad87cef5c2a6f5195722a6da Mon Sep 17 00:00:00 2001
From: Stephen Kelly <steveire@gmail.com>
Date: Tue, 11 Mar 2014 17:37:26 +0100
Subject: cmLocalGenerator: Add ComputeObjectFilenames interface.

Implement it in the local generators and use it in the global
generators.
---
 Source/cmLocalVisualStudioGenerator.cxx | 40 +++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

(limited to 'Source/cmLocalVisualStudioGenerator.cxx')

diff --git a/Source/cmLocalVisualStudioGenerator.cxx b/Source/cmLocalVisualStudioGenerator.cxx
index 613ee975ce..9680d43b1a 100644
--- a/Source/cmLocalVisualStudioGenerator.cxx
+++ b/Source/cmLocalVisualStudioGenerator.cxx
@@ -30,6 +30,46 @@ cmLocalVisualStudioGenerator::~cmLocalVisualStudioGenerator()
 {
 }
 
+//----------------------------------------------------------------------------
+void cmLocalVisualStudioGenerator::ComputeObjectFilenames(
+                        std::map<cmSourceFile const*, std::string>& mapping,
+                        cmGeneratorTarget const* gt)
+{
+  std::string dir_max = this->ComputeLongestObjectDirectory(*gt->Target);
+
+  // Count the number of object files with each name.  Note that
+  // windows file names are not case sensitive.
+  std::map<std::string, int> counts;
+
+  for(std::map<cmSourceFile const*, std::string>::iterator
+      si = mapping.begin(); si != mapping.end(); ++si)
+    {
+    cmSourceFile const* sf = si->first;
+    std::string objectNameLower = cmSystemTools::LowerCase(
+      cmSystemTools::GetFilenameWithoutLastExtension(sf->GetFullPath()));
+    objectNameLower += ".obj";
+    counts[objectNameLower] += 1;
+    }
+
+  // For all source files producing duplicate names we need unique
+  // object name computation.
+
+  for(std::map<cmSourceFile const*, std::string>::iterator
+      si = mapping.begin(); si != mapping.end(); ++si)
+    {
+    cmSourceFile const* sf = si->first;
+    std::string objectName =
+      cmSystemTools::GetFilenameWithoutLastExtension(sf->GetFullPath());
+    objectName += ".obj";
+    if(counts[cmSystemTools::LowerCase(objectName)] > 1)
+      {
+      const_cast<cmGeneratorTarget*>(gt)->AddExplicitObjectName(sf);
+      objectName = this->GetObjectFileNameWithoutTarget(*sf, dir_max);
+      }
+    si->second = objectName;
+    }
+}
+
 //----------------------------------------------------------------------------
 cmsys::auto_ptr<cmCustomCommand>
 cmLocalVisualStudioGenerator::MaybeCreateImplibDir(cmTarget& target,
-- 
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