From e4055a6144c63c83fe2f39440ecfb9a0bcbfae0d Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Wed, 28 Jan 2015 13:31:18 -0500
Subject: Xcode: Add internal API to find xcodebuild

Teach the Xcode generator to compute the location of this tool or the
cmakexbuild wrapper.  Add internal APIs to get the locations on demand.

Use the "cmakexbuild" wrapper for Xcode < 4, and "xcodebuild" for modern
Xcode.
---
 Source/cmGlobalXCodeGenerator.cxx | 31 +++++++++++++++++++++++++++++++
 Source/cmGlobalXCodeGenerator.h   |  5 +++++
 2 files changed, 36 insertions(+)

diff --git a/Source/cmGlobalXCodeGenerator.cxx b/Source/cmGlobalXCodeGenerator.cxx
index b6c428b..3b4dd17 100644
--- a/Source/cmGlobalXCodeGenerator.cxx
+++ b/Source/cmGlobalXCodeGenerator.cxx
@@ -143,6 +143,7 @@ cmGlobalXCodeGenerator::cmGlobalXCodeGenerator(std::string const& version)
   this->ResourcesGroupChildren = 0;
   this->CurrentMakefile = 0;
   this->CurrentLocalGenerator = 0;
+  this->XcodeBuildCommandInitialized = false;
 }
 
 //----------------------------------------------------------------------------
@@ -202,6 +203,36 @@ cmGlobalGenerator* cmGlobalXCodeGenerator::Factory
 }
 
 //----------------------------------------------------------------------------
+std::string const& cmGlobalXCodeGenerator::GetXcodeBuildCommand()
+{
+  if(!this->XcodeBuildCommandInitialized)
+    {
+    this->XcodeBuildCommandInitialized = true;
+    this->XcodeBuildCommand = this->FindXcodeBuildCommand();
+    }
+  return this->XcodeBuildCommand;
+}
+
+//----------------------------------------------------------------------------
+std::string cmGlobalXCodeGenerator::FindXcodeBuildCommand()
+{
+  if (this->XcodeVersion >= 40)
+    {
+    std::string makeProgram = cmSystemTools::FindProgram("xcodebuild");
+    if (makeProgram.empty())
+      {
+      makeProgram = "xcodebuild";
+      }
+    return makeProgram;
+    }
+  else
+    {
+    // Use cmakexbuild wrapper to suppress environment dump from output.
+    return cmSystemTools::GetCMakeCommand() + "xbuild";
+    }
+}
+
+//----------------------------------------------------------------------------
 bool cmGlobalXCodeGenerator::SetGeneratorToolset(std::string const& ts,
                                                  cmMakefile* mf)
 {
diff --git a/Source/cmGlobalXCodeGenerator.h b/Source/cmGlobalXCodeGenerator.h
index a39c8c7..e54bb37 100644
--- a/Source/cmGlobalXCodeGenerator.h
+++ b/Source/cmGlobalXCodeGenerator.h
@@ -212,6 +212,11 @@ protected:
   std::vector<cmXCodeObject*> XCodeObjects;
   cmXCodeObject* RootObject;
 private:
+  std::string const& GetXcodeBuildCommand();
+  std::string FindXcodeBuildCommand();
+  std::string XcodeBuildCommand;
+  bool XcodeBuildCommandInitialized;
+
   void PrintCompilerAdvice(std::ostream&, std::string const&,
                            const char*) const {}
 
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