Source: Fix IWYU warnings in Xcode generators

Source/cmGlobalXCodeGenerator.cxx

@@ -6,6 +6,7 @@
 #include <cassert>
 #include <cstdio>
 #include <cstring>
+#include <functional>
 #include <iomanip>
 #include <sstream>
 #include <unordered_set>
@@ -17,36 +18,42 @@
 
 #include "cmsys/RegularExpression.hxx"
 
-#include "cmCMakePath.h"
 #include "cmComputeLinkInformation.h"
 #include "cmCryptoHash.h"
 #include "cmCustomCommand.h"
 #include "cmCustomCommandGenerator.h"
 #include "cmCustomCommandLines.h"
+#include "cmCustomCommandTypes.h"
 #include "cmDocumentationEntry.h"
 #include "cmGeneratedFileStream.h"
 #include "cmGeneratorExpression.h"
 #include "cmGeneratorTarget.h"
 #include "cmGlobalGeneratorFactory.h"
+#include "cmLinkItem.h"
+#include "cmListFileCache.h"
 #include "cmLocalGenerator.h"
 #include "cmLocalXCodeGenerator.h"
 #include "cmMakefile.h"
 #include "cmMessageType.h"
 #include "cmOutputConverter.h"
+#include "cmPolicies.h"
 #include "cmSourceFile.h"
+#include "cmSourceFileLocation.h"
+#include "cmSourceFileLocationKind.h"
 #include "cmSourceGroup.h"
 #include "cmState.h"
+#include "cmStateSnapshot.h"
 #include "cmStateTypes.h"
 #include "cmStringAlgorithms.h"
 #include "cmSystemTools.h"
 #include "cmTarget.h"
+#include "cmTargetDepend.h"
 #include "cmXCode21Object.h"
 #include "cmXCodeObject.h"
 #include "cmXCodeScheme.h"
+#include "cmXMLWriter.h"
 #include "cmake.h"
 
-struct cmLinkImplementation;
-
 #if !defined(CMAKE_BOOTSTRAP) && defined(__APPLE__)
 #  include <CoreFoundation/CoreFoundation.h>
 #  if !TARGET_OS_IPHONE

Source/cmGlobalXCodeGenerator.h

@@ -11,10 +11,12 @@
 #include <string>
 #include <vector>
 
+#include <cm/optional>
 #include <cm/string_view>
 
 #include "cmGlobalGenerator.h"
 #include "cmTransformDepfile.h"
+#include "cmValue.h"
 #include "cmXCodeObject.h"
 
 class cmCustomCommand;

Source/cmLocalXCodeGenerator.cxx

@@ -2,14 +2,18 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmLocalXCodeGenerator.h"
 
+#include <memory>
+#include <ostream>
+#include <utility>
+
 #include "cmGeneratorTarget.h"
 #include "cmGlobalXCodeGenerator.h"
 #include "cmMakefile.h"
 #include "cmSourceFile.h"
+#include "cmStringAlgorithms.h"
+#include "cmSystemTools.h"
 
-class cmGeneratorTarget;
 class cmGlobalGenerator;
-class cmMakefile;
 
 cmLocalXCodeGenerator::cmLocalXCodeGenerator(cmGlobalGenerator* gg,
                                              cmMakefile* mf)

Source/cmLocalXCodeGenerator.h

@@ -4,6 +4,7 @@
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
+#include <iosfwd>
 #include <map>
 #include <string>
 

Source/cmXCode21Object.h

@@ -6,6 +6,7 @@
 
 #include <iosfwd>
 #include <memory>
+#include <string>
 #include <vector>
 
 #include "cmXCodeObject.h"

Source/cmXCodeObject.cxx

@@ -6,8 +6,6 @@
 
 #include <CoreFoundation/CoreFoundation.h>
 
-#include "cmSystemTools.h"
-
 const char* cmXCodeObject::PBXTypeNames[] = {
   /* clang-format needs this comment to break after the opening brace */
   "PBXGroup",

Source/cmXCodeObject.h

@@ -5,6 +5,7 @@
 #include "cmConfigure.h" // IWYU pragma: keep
 
 #include <algorithm>
+#include <cstddef>
 #include <iosfwd>
 #include <map>
 #include <string>

Source/cmXCodeScheme.cxx

@@ -3,7 +3,6 @@
 #include "cmXCodeScheme.h"
 
 #include <iomanip>
-#include <iostream>
 #include <sstream>
 #include <utility>
 
@@ -14,7 +13,14 @@
 #include "cmGeneratedFileStream.h"
 #include "cmGeneratorExpression.h"
 #include "cmGeneratorTarget.h"
-#include "cmXMLSafe.h"
+#include "cmStateTypes.h"
+#include "cmStringAlgorithms.h"
+#include "cmSystemTools.h"
+#include "cmValue.h"
+#include "cmXCodeObject.h"
+#include "cmXMLWriter.h"
+
+class cmLocalGenerator;
 
 cmXCodeScheme::cmXCodeScheme(cmLocalGenerator* lg, cmXCodeObject* xcObj,
                              TestObjects tests,

Source/cmXCodeScheme.h

@@ -4,12 +4,13 @@
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
+#include <iosfwd>
+#include <string>
 #include <vector>
 
-#include "cmGlobalXCodeGenerator.h"
-#include "cmSystemTools.h"
-#include "cmXCodeObject.h"
-#include "cmXMLWriter.h"
+class cmLocalGenerator;
+class cmXCodeObject;
+class cmXMLWriter;
 
 /** \class cmXCodeScheme
  * \brief Write shared schemes for native targets in Xcode project.