Merge topic 'export-sets'

80112da Merge topic 'AutomocUseTargetProperties' into export-sets
955b966 exports: add a test for exporting dependent targets
6f50a04 exports: define a CMAKE_FIND_PACKAGE_NAME var set by find_package()
0cfd055 exports: move the handling of missing targets into subclasses
190f2c8 exports: fix build with MSVC6
8b5f448 exports: first try at error handling if a target is missing
87f4c01 exports: accept a missing target if it is exported exactly once
999061a exports: store pointers to all installations of each export set
64b3a6c exports: cmGlobalGenerator::ExportSets destructor will clear it
81cdab5 exports: Hold an ExportSet pointer in cm*Export*Generator
5c898fb exports: Add cmExportSetMap class
d13ec1a exports: Create class cmExportSet
4e2347c exports: Rename cmGlobalGenerator::AddTargetToExport{s,}
e846e70 exports: Remove cmTargetExport constructor
81c66c8 exports: Move cmTargetExport to a dedicated header file
ae4ab62 find_package: add support for a <package>_NOT_FOUND_MESSAGE variable
...

Modules/FindPackageHandleStandardArgs.cmake

@@ -120,6 +120,9 @@ macro(_FPHSA_HANDLE_FAILURE_CONFIG_MODE)
         list(GET ${_NAME}_CONSIDERED_VERSIONS ${currentConfigIndex} version)
         set(configsText "${configsText}    ${filename} (version ${version})\n")
       endforeach()
+      if (${_NAME}_NOT_FOUND_MESSAGE)
+        set(configsText "${configsText}    Reason given by package: ${${_NAME}_NOT_FOUND_MESSAGE}\n")
+      endif()
       _FPHSA_FAILURE_MESSAGE("${FPHSA_FAIL_MESSAGE} ${VERSION_MSG}, checked the following files:\n${configsText}")
 
     else()

Modules/readme.txt

@@ -18,6 +18,9 @@ XXX_VERSION_YY          Expect Version YY if true. Make sure at most one of thes
 XXX_WRAP_YY             If False, do not try to use the relevent CMake wrapping command.
 XXX_YY_FOUND            If False, optional YY part of XXX sytem is not available.
 XXX_FOUND               Set to false, or undefined, if we haven't found, or don't want to use XXX.
+XXX_NOT_FOUND_MESSAGE   Should be set by config-files in the case that it has set XXX_FOUND to FALSE.
+                        The contained message will be printed by the find_package() command and by
+                        find_package_handle_standard_args() to inform the user about the problem.
 XXX_RUNTIME_LIBRARY_DIRS Optionally, the runtime library search path for use when running an executable linked to shared libraries.
                          The list should be used by user code to create the PATH on windows or LD_LIBRARY_PATH on unix.
                          This should not be a cache entry.
@@ -124,7 +127,7 @@ If neither the QUIET nor REQUIRED options are given then the
 FindXXX.cmake module should look for the package and complain without
 error if the module is not found.
 
-A package can be provide sub-components.
+A package can provide sub-components.
 Those components can be listed after the COMPONENTS (or REQUIRED)
 or OPTIONAL_COMPONENTS keywords.  The set of all listed components will be
 specified in a XXX_FIND_COMPONENTS variable.

Source/CMakeLists.txt

@@ -176,6 +176,10 @@ set(SRCS
   cmExportFileGenerator.cxx
   cmExportInstallFileGenerator.h
   cmExportInstallFileGenerator.cxx
+  cmExportSet.h
+  cmExportSet.cxx
+  cmExportSetMap.h
+  cmExportSetMap.cxx
   cmExtraCodeBlocksGenerator.cxx
   cmExtraCodeBlocksGenerator.h
   cmExtraEclipseCDT4Generator.cxx
@@ -259,6 +263,7 @@ set(SRCS
   cmSystemTools.h
   cmTarget.cxx
   cmTarget.h
+  cmTargetExport.h
   cmTest.cxx
   cmTest.h
   cmTestGenerator.cxx

Source/cmExportBuildFileGenerator.cxx

@@ -72,8 +72,9 @@ cmExportBuildFileGenerator
     if(!properties.empty())
       {
       // Get the rest of the target details.
+      std::vector<std::string> missingTargets;
       this->SetImportDetailProperties(config, suffix,
-                                      target, properties);
+                                      target, properties, missingTargets);
 
       // TOOD: PUBLIC_HEADER_LOCATION
       // This should wait until the build feature propagation stuff
@@ -82,6 +83,7 @@ cmExportBuildFileGenerator
       //                              properties);
 
       // Generate code in the export file.
+      this->GenerateMissingTargetsCheckCode(os, missingTargets);
       this->GenerateImportPropertyCode(os, config, target, properties);
       }
     }
@@ -131,6 +133,25 @@ cmExportBuildFileGenerator
     }
 }
 
+//----------------------------------------------------------------------------
+void
+cmExportBuildFileGenerator::HandleMissingTarget(
+  std::string& link_libs, std::vector<std::string>&,
+  cmMakefile*, cmTarget* depender, cmTarget* dependee)
+{
+  // The target is not in the export.
+  if(!this->AppendMode)
+    {
+    // We are not appending, so all exported targets should be
+    // known here.  This is probably user-error.
+    this->ComplainAboutMissingTarget(depender, dependee);
+    }
+  // Assume the target will be exported by another command.
+  // Append it with the export namespace.
+  link_libs += this->Namespace;
+  link_libs += dependee->GetName();
+}
+
 //----------------------------------------------------------------------------
 void
 cmExportBuildFileGenerator

Source/cmExportBuildFileGenerator.h

@@ -45,7 +45,13 @@ protected:
   virtual void GenerateImportTargetsConfig(std::ostream& os,
                                            const char* config,
                                            std::string const& suffix);
-  virtual void ComplainAboutMissingTarget(cmTarget* depender,
+  virtual void HandleMissingTarget(std::string& link_libs,
+                                   std::vector<std::string>& missingTargets,
+                                   cmMakefile* mf,
+                                   cmTarget* depender,
+                                   cmTarget* dependee);
+
+  void ComplainAboutMissingTarget(cmTarget* depender,
                                   cmTarget* dependee);
 
   /** Fill in properties indicating built file locations.  */

Source/cmExportFileGenerator.cxx

@@ -11,10 +11,15 @@
 ============================================================================*/
 #include "cmExportFileGenerator.h"
 
+#include "cmExportSet.h"
 #include "cmGeneratedFileStream.h"
+#include "cmGlobalGenerator.h"
+#include "cmInstallExportGenerator.h"
+#include "cmLocalGenerator.h"
 #include "cmMakefile.h"
 #include "cmSystemTools.h"
 #include "cmTarget.h"
+#include "cmTargetExport.h"
 #include "cmVersion.h"
 
 #include <cmsys/auto_ptr.hxx>
@@ -123,7 +128,9 @@ void cmExportFileGenerator::GenerateImportConfig(std::ostream& os,
 void
 cmExportFileGenerator
 ::SetImportDetailProperties(const char* config, std::string const& suffix,
-                            cmTarget* target, ImportPropertyMap& properties)
+                            cmTarget* target, ImportPropertyMap& properties,
+                            std::vector<std::string>& missingTargets
+                           )
 {
   // Get the makefile in which to lookup target information.
   cmMakefile* mf = target->GetMakefile();
@@ -159,13 +166,13 @@ cmExportFileGenerator
     {
     this->SetImportLinkProperty(suffix, target,
                                 "IMPORTED_LINK_INTERFACE_LANGUAGES",
-                                iface->Languages, properties);
+                                iface->Languages, properties, missingTargets);
     this->SetImportLinkProperty(suffix, target,
                                 "IMPORTED_LINK_INTERFACE_LIBRARIES",
-                                iface->Libraries, properties);
+                                iface->Libraries, properties, missingTargets);
     this->SetImportLinkProperty(suffix, target,
                                 "IMPORTED_LINK_DEPENDENT_LIBRARIES",
-                                iface->SharedDeps, properties);
+                                iface->SharedDeps, properties, missingTargets);
     if(iface->Multiplicity > 0)
       {
       std::string prop = "IMPORTED_LINK_INTERFACE_MULTIPLICITY";
@@ -184,7 +191,9 @@ cmExportFileGenerator
                         cmTarget* target,
                         const char* propName,
                         std::vector<std::string> const& libs,
-                        ImportPropertyMap& properties)
+                        ImportPropertyMap& properties,
+                        std::vector<std::string>& missingTargets
+                       )
 {
   // Skip the property if there are no libraries.
   if(libs.empty())
@@ -224,17 +233,7 @@ cmExportFileGenerator
         }
       else
         {
-        // The target is not in the export.
+        this->HandleMissingTarget(link_libs, missingTargets, mf, target, tgt);
-        if(!this->AppendMode)
-          {
-          // We are not appending, so all exported targets should be
-          // known here.  This is probably user-error.
-          this->ComplainAboutMissingTarget(target, tgt);
-          }
-        // Assume the target will be exported by another command.
-        // Append it with the export namespace.
-        link_libs += this->Namespace;
-        link_libs += *li;
         }
       }
     else
@@ -250,6 +249,7 @@ cmExportFileGenerator
   properties[prop] = link_libs;
 }
 
+
 //----------------------------------------------------------------------------
 void cmExportFileGenerator::GenerateImportHeaderCode(std::ostream& os,
                                                      const char* config)
@@ -380,6 +380,30 @@ cmExportFileGenerator
 }
 
 
+//----------------------------------------------------------------------------
+void cmExportFileGenerator::GenerateMissingTargetsCheckCode(std::ostream& os,
+                                const std::vector<std::string>& missingTargets)
+{
+  os << "# Make sure the targets which have been exported in some other \n"
+        "# export set exist.\n";
+  for(unsigned int i=0; i<missingTargets.size(); ++i)
+    {
+    os << "IF(NOT TARGET \"" << missingTargets[i] << "\" )\n"
+       << "  IF(CMAKE_FIND_PACKAGE_NAME)\n"
+       << "    SET( ${CMAKE_FIND_PACKAGE_NAME}_FOUND FALSE)\n"
+       << "    SET( ${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE "
+       << "\"Required imported target \\\"" << missingTargets[i]
+       << "\\\" not found ! \")\n"
+       << "  ELSE()\n"
+       << "    MESSAGE(FATAL_ERROR \"Required imported target \\\""
+       << missingTargets[i] << "\\\" not found ! \")\n"
+       << "  ENDIF()\n"
+       << "ENDIF()\n";
+    }
+  os << "\n";
+}
+
+
 //----------------------------------------------------------------------------
 void
 cmExportFileGenerator::GenerateImportedFileCheckLoop(std::ostream& os)

Source/cmExportFileGenerator.h

@@ -60,17 +60,21 @@ protected:
                                       ImportPropertyMap const& properties,
                                const std::set<std::string>& importedLocations);
   void GenerateImportedFileCheckLoop(std::ostream& os);
+  void GenerateMissingTargetsCheckCode(std::ostream& os,
+                               const std::vector<std::string>& missingTargets);
 
 
   // Collect properties with detailed information about targets beyond
   // their location on disk.
   void SetImportDetailProperties(const char* config,
                                  std::string const& suffix, cmTarget* target,
-                                 ImportPropertyMap& properties);
+                                 ImportPropertyMap& properties,
+                                 std::vector<std::string>& missingTargets);
   void SetImportLinkProperty(std::string const& suffix,
                              cmTarget* target, const char* propName,
                              std::vector<std::string> const& libs,
-                             ImportPropertyMap& properties);
+                             ImportPropertyMap& properties,
+                             std::vector<std::string>& missingTargets);
 
   /** Each subclass knows how to generate its kind of export file.  */
   virtual bool GenerateMainFile(std::ostream& os) = 0;
@@ -80,9 +84,12 @@ protected:
                                            const char* config,
                                            std::string const& suffix) = 0;
 
-  /** Each subclass knows how to complain about a target that is
+  /** Each subclass knows how to deal with a target that is  missing from an
-      missing from an export set.  */
+   *  export set.  */
-  virtual void ComplainAboutMissingTarget(cmTarget* depender,
+  virtual void HandleMissingTarget(std::string& link_libs,
+                                   std::vector<std::string>& missingTargets,
+                                   cmMakefile* mf,
+                                   cmTarget* depender,
                                    cmTarget* dependee) = 0;
 
   // The namespace in which the exports are placed in the generated file.

Source/cmExportInstallFileGenerator.cxx

@@ -11,14 +11,19 @@
 ============================================================================*/
 #include "cmExportInstallFileGenerator.h"
 
+#include "cmExportSet.h"
+#include "cmExportSetMap.h"
 #include "cmGeneratedFileStream.h"
+#include "cmGlobalGenerator.h"
+#include "cmLocalGenerator.h"
 #include "cmInstallExportGenerator.h"
 #include "cmInstallTargetGenerator.h"
+#include "cmTargetExport.h"
 
 //----------------------------------------------------------------------------
 cmExportInstallFileGenerator
 ::cmExportInstallFileGenerator(cmInstallExportGenerator* iegen):
-  InstallExportGenerator(iegen)
+  IEGen(iegen)
 {
 }
 
@@ -36,10 +41,10 @@ bool cmExportInstallFileGenerator::GenerateMainFile(std::ostream& os)
 {
   // Create all the imported targets.
   for(std::vector<cmTargetExport*>::const_iterator
-        tei = this->ExportSet->begin();
+        tei = this->IEGen->GetExportSet()->GetTargetExports()->begin();
-      tei != this->ExportSet->end(); ++tei)
+      tei != this->IEGen->GetExportSet()->GetTargetExports()->end(); ++tei)
     {
-    cmTargetExport* te = *tei;
+    cmTargetExport const* te = *tei;
     if(this->ExportedTargets.insert(te->Target).second)
       {
       this->GenerateImportTargetCode(os, te->Target);
@@ -47,8 +52,9 @@ bool cmExportInstallFileGenerator::GenerateMainFile(std::ostream& os)
     else
       {
       cmOStringStream e;
-      e << "INSTALL(EXPORT \"" << this->Name << "\" ...) "
+      e << "INSTALL(EXPORT \""
-        << "includes target \"" << te->Target->GetName()
+        << this->IEGen->GetExportSet()->GetName()
+        << "\" ...) " << "includes target \"" << te->Target->GetName()
         << "\" more than once in the export set.";
       cmSystemTools::Error(e.str().c_str());
       return false;
@@ -84,7 +90,7 @@ bool
 cmExportInstallFileGenerator::GenerateImportFileConfig(const char* config)
 {
   // Skip configurations not enabled for this export.
-  if(!this->InstallExportGenerator->InstallsForConfig(config))
+  if(!this->IEGen->InstallsForConfig(config))
     {
     return true;
     }
@@ -140,7 +146,7 @@ cmExportInstallFileGenerator
 {
   // Add code to compute the installation prefix relative to the
   // import file location.
-  const char* installDest = this->InstallExportGenerator->GetDestination();
+  const char* installDest = this->IEGen->GetDestination();
   if(!cmSystemTools::FileIsFullPath(installDest))
     {
     std::string dest = installDest;
@@ -161,11 +167,11 @@ cmExportInstallFileGenerator
 
   // Add each target in the set to the export.
   for(std::vector<cmTargetExport*>::const_iterator
-        tei = this->ExportSet->begin();
+        tei = this->IEGen->GetExportSet()->GetTargetExports()->begin();
-      tei != this->ExportSet->end(); ++tei)
+      tei != this->IEGen->GetExportSet()->GetTargetExports()->end(); ++tei)
     {
     // Collect import properties for this target.
-    cmTargetExport* te = *tei;
+    cmTargetExport const* te = *tei;
     ImportPropertyMap properties;
     std::set<std::string> importedLocations;
     this->SetImportLocationProperty(config, suffix, te->ArchiveGenerator,
@@ -185,8 +191,9 @@ cmExportInstallFileGenerator
     if(!properties.empty())
       {
       // Get the rest of the target details.
+      std::vector<std::string> missingTargets;
       this->SetImportDetailProperties(config, suffix,
-                                      te->Target, properties);
+                                      te->Target, properties, missingTargets);
 
       // TOOD: PUBLIC_HEADER_LOCATION
       // This should wait until the build feature propagation stuff
@@ -195,6 +202,7 @@ cmExportInstallFileGenerator
       //                              properties);
 
       // Generate code in the export file.
+      this->GenerateMissingTargetsCheckCode(os, missingTargets);
       this->GenerateImportPropertyCode(os, config, te->Target, properties);
       this->GenerateImportedFileChecksCode(os, te->Target, properties,
                                            importedLocations);
@@ -304,14 +312,82 @@ cmExportInstallFileGenerator
     }
 }
 
+//----------------------------------------------------------------------------
+void
+cmExportInstallFileGenerator::HandleMissingTarget(
+  std::string& link_libs, std::vector<std::string>& missingTargets,
+  cmMakefile* mf, cmTarget* depender, cmTarget* dependee)
+{
+  std::string name = dependee->GetName();
+  std::vector<std::string> namespaces = this->FindNamespaces(mf, name);
+  int targetOccurrences = (int)namespaces.size();
+  if (targetOccurrences == 1)
+    {
+    std::string missingTarget = namespaces[0];
+    missingTarget += name;
+    link_libs += missingTarget;
+    missingTargets.push_back(missingTarget);
+    }
+  else
+    {
+    // We are not appending, so all exported targets should be
+    // known here.  This is probably user-error.
+    this->ComplainAboutMissingTarget(depender, dependee, targetOccurrences);
+    }
+}
+
+//----------------------------------------------------------------------------
+std::vector<std::string>
+cmExportInstallFileGenerator
+::FindNamespaces(cmMakefile* mf, const std::string& name)
+{
+  std::vector<std::string> namespaces;
+  cmGlobalGenerator* gg = mf->GetLocalGenerator()->GetGlobalGenerator();
+  const cmExportSetMap& exportSets = gg->GetExportSets();
+
+  for(cmExportSetMap::const_iterator expIt = exportSets.begin();
+      expIt != exportSets.end();
+      ++expIt)
+    {
+    const cmExportSet* exportSet = expIt->second;
+    std::vector<cmTargetExport*> const* targets =
+                                                 exportSet->GetTargetExports();
+
+    bool containsTarget = false;
+    for(unsigned int i=0; i<targets->size(); i++)
+      {
+      if (name == (*targets)[i]->Target->GetName())
+        {
+        containsTarget = true;
+        break;
+        }
+      }
+
+    if (containsTarget)
+      {
+      std::vector<cmInstallExportGenerator const*> const* installs =
+                                                 exportSet->GetInstallations();
+      for(unsigned int i=0; i<installs->size(); i++)
+        {
+        namespaces.push_back((*installs)[i]->GetNamespace());
+        }
+      }
+    }
+
+  return namespaces;
+}
+
+
 //----------------------------------------------------------------------------
 void
 cmExportInstallFileGenerator
 ::ComplainAboutImportPrefix(cmInstallTargetGenerator* itgen)
 {
-  const char* installDest = this->InstallExportGenerator->GetDestination();
+  const char* installDest = this->IEGen->GetDestination();
   cmOStringStream e;
-  e << "INSTALL(EXPORT \"" << this->Name << "\") given absolute "
+  e << "INSTALL(EXPORT \""
+    << this->IEGen->GetExportSet()->GetName()
+    << "\") given absolute "
     << "DESTINATION \"" << installDest << "\" but the export "
     << "references an installation of target \""
     << itgen->GetTarget()->GetName() << "\" which has relative "
@@ -322,12 +398,24 @@ cmExportInstallFileGenerator
 //----------------------------------------------------------------------------
 void
 cmExportInstallFileGenerator
-::ComplainAboutMissingTarget(cmTarget* depender, cmTarget* dependee)
+::ComplainAboutMissingTarget(cmTarget* depender,
+                             cmTarget* dependee,
+                             int occurrences)
 {
   cmOStringStream e;
-  e << "INSTALL(EXPORT \"" << this->Name << "\" ...) "
+  e << "INSTALL(EXPORT \""
+    << this->IEGen->GetExportSet()->GetName()
+    << "\" ...) "
     << "includes target \"" << depender->GetName()
-    << "\" which requires target \"" << dependee->GetName()
+    << "\" which requires target \"" << dependee->GetName() << "\" ";
-    << "\" that is not in the export set.";
+  if (occurrences == 0)
+    {
+    e << "that is not in the export set.";
+    }
+  else
+    {
+    e << "that is not in this export set, but " << occurrences
+    << " times in others.";
+    }
   cmSystemTools::Error(e.str().c_str());
 }

Source/cmExportInstallFileGenerator.h

@@ -18,6 +18,7 @@ class cmInstallExportGenerator;
 class cmInstallFilesGenerator;
 class cmInstallTargetGenerator;
 class cmTargetExport;
+class cmExportSet;
 
 /** \class cmExportInstallFileGenerator
  * \brief Generate a file exporting targets from an install tree.
@@ -40,15 +41,6 @@ public:
       files.  */
   cmExportInstallFileGenerator(cmInstallExportGenerator* iegen);
 
-  /** Set the name of the export associated with the files.  This is
-      the name given to the install(EXPORT) command mode.  */
-  void SetName(const char* name) { this->Name = name; }
-
-  /** Set the set of targets to be exported.  These are the targets
-      associated with the export name.  */
-  void SetExportSet(std::vector<cmTargetExport*> const* eSet)
-    { this->ExportSet = eSet; }
-
   /** Get the per-config file generated for each configuraiton.  This
       maps from the configuration name to the file temporary location
       for installation.  */
@@ -65,9 +57,20 @@ protected:
   virtual void GenerateImportTargetsConfig(std::ostream& os,
                                            const char* config,
                                            std::string const& suffix);
-  virtual void ComplainAboutMissingTarget(cmTarget* depender,
+  virtual void HandleMissingTarget(std::string& link_libs,
+                                   std::vector<std::string>& missingTargets,
+                                   cmMakefile* mf,
+                                   cmTarget* depender,
                                    cmTarget* dependee);
 
+  void ComplainAboutMissingTarget(cmTarget* depender,
+                                  cmTarget* dependee,
+                                  int occurrences);
+
+  std::vector<std::string> FindNamespaces(cmMakefile* mf,
+                                          const std::string& name);
+
+
   /** Generate a per-configuration file for the targets.  */
   bool GenerateImportFileConfig(const char* config);
 
@@ -81,9 +84,7 @@ protected:
 
   void ComplainAboutImportPrefix(cmInstallTargetGenerator* itgen);
 
-  cmInstallExportGenerator* InstallExportGenerator;
+  cmInstallExportGenerator* IEGen;
-  std::string Name;
-  std::vector<cmTargetExport*> const* ExportSet;
 
   std::string ImportPrefix;
 
@@ -91,34 +92,4 @@ protected:
   std::map<cmStdString, cmStdString> ConfigImportFiles;
 };
 
-/*
-  cmTargetExport is used in cmGlobalGenerator to collect the install
-  generators for targets associated with an export.
-*/
-class cmTargetExport
-{
-public:
-  cmTargetExport(cmTarget* tgt,
-                 cmInstallTargetGenerator* archive,
-                 cmInstallTargetGenerator* runtime,
-                 cmInstallTargetGenerator* library,
-                 cmInstallTargetGenerator* framework,
-                 cmInstallTargetGenerator* bundle,
-                 cmInstallFilesGenerator* headers
-                ) : Target(tgt), ArchiveGenerator(archive),
-                    RuntimeGenerator(runtime), LibraryGenerator(library),
-                    FrameworkGenerator(framework), BundleGenerator(bundle),
-                    HeaderGenerator(headers) {}
-
-  cmTarget* Target;
-  cmInstallTargetGenerator* ArchiveGenerator;
-  cmInstallTargetGenerator* RuntimeGenerator;
-  cmInstallTargetGenerator* LibraryGenerator;
-  cmInstallTargetGenerator* FrameworkGenerator;
-  cmInstallTargetGenerator* BundleGenerator;
-  cmInstallFilesGenerator* HeaderGenerator;
-private:
-  cmTargetExport();
-};
-
 #endif

Source/cmExportSet.cxx

@@ -0,0 +1,32 @@
+/*============================================================================
+  CMake - Cross Platform Makefile Generator
+  Copyright 2000-2012 Kitware, Inc., Insight Software Consortium
+
+  Distributed under the OSI-approved BSD License (the "License");
+  see accompanying file Copyright.txt for details.
+
+  This software is distributed WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the License for more information.
+============================================================================*/
+
+#include "cmExportSet.h"
+#include "cmTargetExport.h"
+
+cmExportSet::~cmExportSet()
+{
+  for(unsigned int i = 0; i < this->TargetExports.size(); ++ i)
+    {
+    delete this->TargetExports[i];
+    }
+}
+
+void cmExportSet::AddTargetExport(cmTargetExport* te)
+{
+  this->TargetExports.push_back(te);
+}
+
+void cmExportSet::AddInstallation(cmInstallExportGenerator const* installation)
+{
+  this->Installations.push_back(installation);
+}

Source/cmExportSet.h

@@ -0,0 +1,46 @@
+/*============================================================================
+  CMake - Cross Platform Makefile Generator
+  Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
+
+  Distributed under the OSI-approved BSD License (the "License");
+  see accompanying file Copyright.txt for details.
+
+  This software is distributed WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the License for more information.
+============================================================================*/
+#ifndef cmExportSet_h
+#define cmExportSet_h
+
+#include "cmSystemTools.h"
+class cmTargetExport;
+class cmInstallExportGenerator;
+
+/// A set of targets that were installed with the same EXPORT parameter.
+class cmExportSet
+{
+public:
+  /// Construct an empty export set named \a name
+  cmExportSet(const std::string &name) : Name(name) {}
+  /// Destructor
+  ~cmExportSet();
+
+  void AddTargetExport(cmTargetExport* tgt);
+
+  void AddInstallation(cmInstallExportGenerator const* installation);
+
+  std::string const& GetName() const { return this->Name; }
+
+  std::vector<cmTargetExport*> const* GetTargetExports() const
+     { return &this->TargetExports; }
+
+  std::vector<cmInstallExportGenerator const*> const* GetInstallations() const
+     { return &this->Installations; }
+
+private:
+  std::vector<cmTargetExport*> TargetExports;
+  std::string Name;
+  std::vector<cmInstallExportGenerator const*> Installations;
+};
+
+#endif

Source/cmExportSetMap.cxx

@@ -0,0 +1,34 @@
+/*============================================================================
+  CMake - Cross Platform Makefile Generator
+  Copyright 2000-2012 Kitware, Inc., Insight Software Consortium
+
+  Distributed under the OSI-approved BSD License (the "License");
+  see accompanying file Copyright.txt for details.
+
+  This software is distributed WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the License for more information.
+============================================================================*/
+
+#include "cmExportSetMap.h"
+#include "cmExportSet.h"
+
+cmExportSet* cmExportSetMap::operator[](const std::string &name)
+{
+  std::map<std::string, cmExportSet*>::iterator it = this->find(name);
+  if (it == this->end()) // Export set not found
+    {
+    it = this->insert(std::make_pair(name, new cmExportSet(name))).first;
+    }
+  return it->second;
+}
+
+cmExportSetMap::~cmExportSetMap()
+{
+  for(std::map<std::string, cmExportSet*>::iterator it = this->begin();
+      it != this->end();
+      ++ it)
+    {
+    delete it->second;
+    }
+}

Source/cmExportSetMap.h

@@ -0,0 +1,33 @@
+/*============================================================================
+  CMake - Cross Platform Makefile Generator
+  Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
+
+  Distributed under the OSI-approved BSD License (the "License");
+  see accompanying file Copyright.txt for details.
+
+  This software is distributed WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the License for more information.
+============================================================================*/
+#ifndef cmExportSetMap_h
+#define cmExportSetMap_h
+
+#include "cmSystemTools.h"
+class cmExportSet;
+
+/// A name -> cmExportSet map with overloaded operator[].
+class cmExportSetMap : public std::map<std::string, cmExportSet*>
+{
+public:
+  /** \brief Overloaded operator[].
+   *
+   * The operator is overloaded because cmExportSet has no default constructor:
+   * we do not want unnamed export sets.
+   */
+  cmExportSet* operator[](const std::string &name);
+
+  /// Overloaded destructor deletes all member export sets.
+  ~cmExportSetMap();
+};
+
+#endif

Source/cmFindPackageCommand.cxx

@@ -840,6 +840,8 @@ bool cmFindPackageCommand
 //----------------------------------------------------------------------------
 void cmFindPackageCommand::SetModuleVariables(const std::string& components)
 {
+  this->AddFindDefinition("CMAKE_FIND_PACKAGE_NAME", this->Name.c_str());
+
   // Store the list of components.
   std::string components_var = this->Name + "_FIND_COMPONENTS";
   this->AddFindDefinition(components_var.c_str(), components.c_str());
@@ -1016,6 +1018,9 @@ bool cmFindPackageCommand::HandlePackageMode()
 
   std::string foundVar = this->Name;
   foundVar += "_FOUND";
+  std::string notFoundMessageVar = this->Name;
+  notFoundMessageVar += "_NOT_FOUND_MESSAGE";
+  std::string notFoundMessage;
 
   // If the directory for the config file was found, try to read the file.
   bool result = true;
@@ -1033,6 +1038,7 @@ bool cmFindPackageCommand::HandlePackageMode()
       // has set Foo_FOUND to FALSE itself:
       this->Makefile->RemoveDefinition(foundVar.c_str());
       }
+    this->Makefile->RemoveDefinition(notFoundMessageVar.c_str());
 
     // Set the version variables before loading the config file.
     // It may override them.
@@ -1051,6 +1057,8 @@ bool cmFindPackageCommand::HandlePackageMode()
         // we get here if the Config file has set Foo_FOUND actively to FALSE
         found = false;
         configFileSetFOUNDFalse = true;
+        notFoundMessage = this->Makefile->GetSafeDefinition(
+                                                   notFoundMessageVar.c_str());
         }
       }
     else
@@ -1071,6 +1079,10 @@ bool cmFindPackageCommand::HandlePackageMode()
         "  " << this->FileFound << "\n"
         "but it set " << foundVar << " to FALSE so package \"" <<
         this->Name << "\" is considered to be NOT FOUND.";
+      if (!notFoundMessage.empty())
+        {
+        e << " Reason given by package: \n" << notFoundMessage << "\n";
+        }
       }
     // If there are files in ConsideredConfigs, it means that FooConfig.cmake
     // have been found, but they didn't have appropriate versions.

Source/cmGlobalGenerator.cxx

@@ -21,7 +21,7 @@
 #include "cmQtAutomoc.h"
 #include "cmSourceFile.h"
 #include "cmVersion.h"
-#include "cmExportInstallFileGenerator.h"
+#include "cmTargetExport.h"
 #include "cmComputeTargetDepends.h"
 #include "cmGeneratedFileStream.h"
 #include "cmGeneratorTarget.h"
@@ -76,12 +76,12 @@ cmGlobalGenerator::~cmGlobalGenerator()
     }
 
   this->ClearGeneratorTargets();
-  this->ClearExportSets();
 }
 
 void cmGlobalGenerator::ResolveLanguageCompiler(const std::string &lang,
                                                 cmMakefile *mf,
-                                                bool optional) {
+                                                bool optional)
+{
   std::string langComp = "CMAKE_";
   langComp += lang;
   langComp += "_COMPILER";
@@ -817,7 +817,7 @@ void cmGlobalGenerator::Configure()
 {
   this->FirstTimeProgress = 0.0f;
   this->ClearGeneratorTargets();
-  this->ClearExportSets();
+  this->ExportSets.clear();
   // Delete any existing cmLocalGenerators
   unsigned int i;
   for (i = 0; i < this->LocalGenerators.size(); ++i)
@@ -1489,52 +1489,6 @@ void cmGlobalGenerator::AddInstallComponent(const char* component)
     }
 }
 
-void cmGlobalGenerator::AddTargetToExports(const char* exportSetName,
-                                           cmTarget* target,
-                                           cmInstallTargetGenerator* archive,
-                                           cmInstallTargetGenerator* runTime,
-                                           cmInstallTargetGenerator* library,
-                                           cmInstallTargetGenerator* framework,
-                                           cmInstallTargetGenerator* bundle,
-                                           cmInstallFilesGenerator* headers)
-{
-  if ((exportSetName) && (*exportSetName) && (target))
-    {
-    cmTargetExport* te = new cmTargetExport(target, archive, runTime, library,
-                                            framework, bundle, headers);
-    this->ExportSets[exportSetName].push_back(te);
-    }
-}
-
-//----------------------------------------------------------------------------
-void cmGlobalGenerator::ClearExportSets()
-{
-  for(std::map<cmStdString, std::vector<cmTargetExport*> >::iterator
-        setIt = this->ExportSets.begin();
-      setIt != this->ExportSets.end(); ++setIt)
-    {
-    for(unsigned int i = 0; i < setIt->second.size(); ++i)
-      {
-      delete setIt->second[i];
-      }
-    }
-  this->ExportSets.clear();
-}
-
-const std::vector<cmTargetExport*>* cmGlobalGenerator::GetExportSet(
-                                                        const char* name) const
-{
-  std::map<cmStdString, std::vector<cmTargetExport*> >::const_iterator
-                                     exportSetIt = this->ExportSets.find(name);
-  if (exportSetIt != this->ExportSets.end())
-    {
-    return &exportSetIt->second;
-    }
-
-  return 0;
-}
-
-
 void cmGlobalGenerator::EnableInstallTarget()
 {
   this->InstallTargetEnabled = true;

Source/cmGlobalGenerator.h

@@ -18,14 +18,15 @@
 #include "cmTarget.h" // For cmTargets
 #include "cmTargetDepend.h" // For cmTargetDependSet
 #include "cmSystemTools.h" // for cmSystemTools::OutputOption
+#include "cmExportSetMap.h" // For cmExportSetMap
 #include "cmGeneratorTarget.h"
+
 class cmake;
 class cmGeneratorTarget;
 class cmMakefile;
 class cmLocalGenerator;
 class cmExternalMakefileProjectGenerator;
 class cmTarget;
-class cmTargetExport;
 class cmInstallTargetGenerator;
 class cmInstallFilesGenerator;
 
@@ -128,8 +129,8 @@ public:
   void SetCMakeInstance(cmake *cm);
 
   ///! Get the CMake instance
-  cmake *GetCMakeInstance() { return this->CMakeInstance; };
+  cmake *GetCMakeInstance() { return this->CMakeInstance; }
-  const cmake *GetCMakeInstance() const { return this->CMakeInstance; };
+  const cmake *GetCMakeInstance() const { return this->CMakeInstance; }
 
   void SetConfiguredFilesPath(cmGlobalGenerator* gen);
   const std::vector<cmLocalGenerator *>& GetLocalGenerators() const {
@@ -152,18 +153,9 @@ public:
   void AddInstallComponent(const char* component);
 
   const std::set<cmStdString>* GetInstallComponents() const
-  { return &InstallComponents; }
+    { return &this->InstallComponents; }
 
-  ///! Add one installed target to the sets of the exports
+  cmExportSetMap& GetExportSets() {return this->ExportSets;}
-  void AddTargetToExports(const char* exportSet, cmTarget* target,
-                          cmInstallTargetGenerator* archive,
-                          cmInstallTargetGenerator* runTime,
-                          cmInstallTargetGenerator* library,
-                          cmInstallTargetGenerator* framework,
-                          cmInstallTargetGenerator* bundle,
-                          cmInstallFilesGenerator* publicHeaders);
-  ///! Get the export target set with the   given name
-  const std::vector<cmTargetExport*>* GetExportSet(const char* name) const;
 
   /** Add a file to the manifest of generated targets for a configuration.  */
   void AddToManifest(const char* config, std::string const& f);
@@ -329,15 +321,13 @@ protected:
   cmLocalGenerator* CurrentLocalGenerator;
   // map from project name to vector of local generators in that project
   std::map<cmStdString, std::vector<cmLocalGenerator*> > ProjectMap;
-  std::map<cmLocalGenerator*, std::set<cmTarget *> >
+  std::map<cmLocalGenerator*, std::set<cmTarget *> > LocalGeneratorToTargetMap;
-  LocalGeneratorToTargetMap;
 
   // Set of named installation components requested by the project.
   std::set<cmStdString> InstallComponents;
   bool InstallTargetEnabled;
   // Sets of named target exports
-  std::map<cmStdString, std::vector<cmTargetExport*> > ExportSets;
+  cmExportSetMap ExportSets;
-  void ClearExportSets();
 
   // Manifest of all targets that will be built for each configuration.
   // This is computed just before local generators generate.

Source/cmInstallCommand.cxx

@@ -17,6 +17,8 @@
 #include "cmInstallTargetGenerator.h"
 #include "cmInstallExportGenerator.h"
 #include "cmInstallCommandArguments.h"
+#include "cmTargetExport.h"
+#include "cmExportSet.h"
 
 #include <cmsys/Glob.hxx>
 
@@ -735,11 +737,16 @@ bool cmInstallCommand::HandleTargetsMode(std::vector<std::string> const& args)
     // this is not a namelink-only rule.
     if(!exports.GetString().empty() && !namelinkOnly)
       {
+      cmTargetExport *te = new cmTargetExport;
+      te->Target = &target;
+      te->ArchiveGenerator = archiveGenerator;
+      te->BundleGenerator = bundleGenerator;
+      te->FrameworkGenerator = frameworkGenerator;
+      te->HeaderGenerator = publicHeaderGenerator;
+      te->LibraryGenerator = libraryGenerator;
+      te->RuntimeGenerator = runtimeGenerator;
       this->Makefile->GetLocalGenerator()->GetGlobalGenerator()
-        ->AddTargetToExports(exports.GetCString(), &target,
+        ->GetExportSets()[exports.GetString()]->AddTargetExport(te);
-                             archiveGenerator, runtimeGenerator,
-                             libraryGenerator, frameworkGenerator,
-                             bundleGenerator, publicHeaderGenerator);
       }
     }
 
@@ -1264,7 +1271,9 @@ bool cmInstallCommand::HandleExportMode(std::vector<std::string> const& args)
   // Create the export install generator.
   cmInstallExportGenerator* exportGenerator =
     new cmInstallExportGenerator(
-      exp.GetCString(), ica.GetDestination().c_str(),
+      this->Makefile->GetLocalGenerator()
+          ->GetGlobalGenerator()->GetExportSets()[exp.GetString()],
+      ica.GetDestination().c_str(),
       ica.GetPermissions().c_str(), ica.GetConfigurations(),
       ica.GetComponent().c_str(), fname.c_str(),
       name_space.GetCString(), this->Makefile);

Source/cmInstallExportGenerator.cxx

@@ -23,10 +23,11 @@
 #include "cmInstallFilesGenerator.h"
 
 #include "cmExportInstallFileGenerator.h"
+#include "cmExportSet.h"
 
 //----------------------------------------------------------------------------
 cmInstallExportGenerator::cmInstallExportGenerator(
-  const char* name,
+  cmExportSet* exportSet,
   const char* destination,
   const char* file_permissions,
   std::vector<std::string> const& configurations,
@@ -34,13 +35,14 @@ cmInstallExportGenerator::cmInstallExportGenerator(
   const char* filename, const char* name_space,
   cmMakefile* mf)
   :cmInstallGenerator(destination, configurations, component)
-  ,Name(name)
+  ,ExportSet(exportSet)
   ,FilePermissions(file_permissions)
   ,FileName(filename)
   ,Namespace(name_space)
   ,Makefile(mf)
 {
   this->EFGen = new cmExportInstallFileGenerator(this);
+  exportSet->AddInstallation(this);
 }
 
 //----------------------------------------------------------------------------
@@ -113,16 +115,12 @@ void cmInstallExportGenerator::ComputeTempDir()
 //----------------------------------------------------------------------------
 void cmInstallExportGenerator::GenerateScript(std::ostream& os)
 {
-  // Get the export set requested.
-  ExportSet const* exportSet =
-    this->Makefile->GetLocalGenerator()->GetGlobalGenerator()
-    ->GetExportSet(this->Name.c_str());
-
   // Skip empty sets.
-  if(!exportSet)
+  if(ExportSet->GetTargetExports()->empty())
     {
     cmOStringStream e;
-    e << "INSTALL(EXPORT) given unknown export \"" << this->Name << "\"";
+    e << "INSTALL(EXPORT) given unknown export \""
+      << ExportSet->GetName() << "\"";
     cmSystemTools::Error(e.str().c_str());
     return;
     }
@@ -137,8 +135,6 @@ void cmInstallExportGenerator::GenerateScript(std::ostream& os)
   this->MainImportFile += this->FileName;
 
   // Generate the import file for this export set.
-  this->EFGen->SetName(this->Name.c_str());
-  this->EFGen->SetExportSet(exportSet);
   this->EFGen->SetExportFile(this->MainImportFile.c_str());
   this->EFGen->SetNamespace(this->Namespace.c_str());
   if(this->ConfigurationTypes->empty())

Source/cmInstallExportGenerator.h

@@ -17,8 +17,7 @@
 class cmExportInstallFileGenerator;
 class cmInstallFilesGenerator;
 class cmInstallTargetGenerator;
-class cmTarget;
+class cmExportSet;
-class cmTargetExport;
 class cmMakefile;
 
 /** \class cmInstallExportGenerator
@@ -27,24 +26,27 @@ class cmMakefile;
 class cmInstallExportGenerator: public cmInstallGenerator
 {
 public:
-  cmInstallExportGenerator(const char* name,
+  cmInstallExportGenerator(cmExportSet* exportSet,
                            const char* dest, const char* file_permissions,
                            const std::vector<std::string>& configurations,
                            const char* component,
                            const char* filename, const char* name_space,
                            cmMakefile* mf);
   ~cmInstallExportGenerator();
-protected:
-  typedef std::vector<cmTargetExport*> ExportSet;
 
+  cmExportSet* GetExportSet() {return this->ExportSet;}
+
+  const std::string& GetNamespace() const { return this->Namespace; }
+
+protected:
   virtual void GenerateScript(std::ostream& os);
   virtual void GenerateScriptConfigs(std::ostream& os, Indent const& indent);
   virtual void GenerateScriptActions(std::ostream& os, Indent const& indent);
-  void GenerateImportFile(ExportSet const* exportSet);
+  void GenerateImportFile(cmExportSet const* exportSet);
-  void GenerateImportFile(const char* config, ExportSet const* exportSet);
+  void GenerateImportFile(const char* config, cmExportSet const* exportSet);
   void ComputeTempDir();
 
-  std::string Name;
+  cmExportSet* ExportSet;
   std::string FilePermissions;
   std::string FileName;
   std::string Namespace;

Source/cmTargetExport.h

@@ -0,0 +1,39 @@
+/*============================================================================
+  CMake - Cross Platform Makefile Generator
+  Copyright 2000-2012 Kitware, Inc., Insight Software Consortium
+
+  Distributed under the OSI-approved BSD License (the "License");
+  see accompanying file Copyright.txt for details.
+
+  This software is distributed WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the License for more information.
+============================================================================*/
+#ifndef cmTargetExport_h
+#define cmTargetExport_h
+
+class cmTarget;
+class cmInstallTargetGenerator;
+class cmInstallFilesGenerator;
+
+/** \brief A member of an ExportSet
+ *
+ * This struct holds pointers to target and all relevant generators.
+ */
+class cmTargetExport
+{
+public:
+  cmTarget* Target; ///< The target
+
+  ///@name Generators
+  ///@{
+  cmInstallTargetGenerator* ArchiveGenerator;
+  cmInstallTargetGenerator* RuntimeGenerator;
+  cmInstallTargetGenerator* LibraryGenerator;
+  cmInstallTargetGenerator* FrameworkGenerator;
+  cmInstallTargetGenerator* BundleGenerator;
+  cmInstallFilesGenerator* HeaderGenerator;
+  ///@}
+};
+
+#endif

Tests/ExportImport/Export/CMakeLists.txt

@@ -87,6 +87,18 @@ target_link_libraries(testLibCycleA testLibCycleB)
 target_link_libraries(testLibCycleB testLibCycleA)
 set_property(TARGET testLibCycleA PROPERTY LINK_INTERFACE_MULTIPLICITY 3)
 
+# Test exporting dependent libraries into different exports
+add_library(testLibRequired testLibRequired.c)
+add_library(testLibDepends testLibDepends.c)
+target_link_libraries(testLibDepends testLibRequired)
+
+install(TARGETS testLibRequired EXPORT RequiredExp DESTINATION lib )
+install(EXPORT RequiredExp NAMESPACE Req:: FILE testLibRequiredConfig.cmake DESTINATION lib/cmake/testLibRequired)
+
+install(TARGETS testLibDepends EXPORT DependsExp DESTINATION lib )
+install(EXPORT DependsExp FILE testLibDependsConfig.cmake DESTINATION lib/cmake/testLibDepends)
+
+
 # Install and export from install tree.
 install(
   TARGETS

Tests/ExportImport/Export/testLibDepends.c

@@ -0,0 +1,4 @@
+
+extern int testLibRequired(void);
+
+int testLibDepends(void) { return testLibRequired(); }

Tests/ExportImport/Export/testLibRequired.c

@@ -0,0 +1 @@
+int testLibRequired(void) { return 0; }

Tests/ExportImport/Import/A/CMakeLists.txt

@@ -4,6 +4,10 @@ include(${Import_BINARY_DIR}/../Export/ExportBuildTree.cmake)
 # Import targets from the exported install tree.
 include(${CMAKE_INSTALL_PREFIX}/lib/exp/exp.cmake)
 
+# Import two exports, where the Depends one depends on an exported target from the Required one:
+include(${CMAKE_INSTALL_PREFIX}/lib/cmake/testLibRequired/testLibRequiredConfig.cmake)
+include(${CMAKE_INSTALL_PREFIX}/lib/cmake/testLibDepends/testLibDependsConfig.cmake)
+
 # Try referencing an executable imported from the install tree.
 add_custom_command(
   OUTPUT ${Import_BINARY_DIR}/exp_generated.c

bootstrap

@@ -199,6 +199,8 @@ CMAKE_CXX_SOURCES="\
   cmMakefile \
   cmExportFileGenerator \
   cmExportInstallFileGenerator \
+  cmExportSet \
+  cmExportSetMap \
   cmInstallDirectoryGenerator \
   cmGeneratedFileStream \
   cmGeneratorTarget \