ENH: Updated exporting and importing of targets to support libraries and configurations.

  - Created cmExportFileGenerator hierarchy to implement export file generation
  - Installed exports use per-config import files loaded by a central one.
  - Include soname of shared libraries in import information
  - Renamed PREFIX to NAMESPACE in INSTALL(EXPORT) and EXPORT() commands
  - Move addition of CMAKE_INSTALL_PREFIX to destinations to install generators
  - Import files compute the installation prefix relative to their location when loaded
  - Add mapping of importer configurations to importee configurations
  - Rename IMPORT targets to IMPORTED targets to distinguish from windows import libraries
  - Scope IMPORTED targets within directories to isolate them
  - Place all properties created by import files in the IMPORTED namespace
  - Document INSTALL(EXPORT) and EXPORT() commands.
  - Document IMPORTED signature of add_executable and add_library
  - Enable finding of imported targets in cmComputeLinkDepends

1 files changed, 122 insertions, 0 deletions

diff --git a/Source/cmExportInstallFileGenerator.h b/Source/cmExportInstallFileGenerator.h
new file mode 100644
index 0000000..ecae0b7
--- /dev/null
+++ b/Source/cmExportInstallFileGenerator.h
@@ -0,0 +1,122 @@
+/*=========================================================================
+
+  Program:   CMake - Cross-Platform Makefile Generator
+  Module:    $RCSfile$
+  Language:  C++
+  Date:      $Date$
+  Version:   $Revision$
+
+  Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
+  See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
+
+     This software is distributed WITHOUT ANY WARRANTY; without even
+     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+     PURPOSE.  See the above copyright notices for more information.
+
+=========================================================================*/
+#ifndef cmExportInstallFileGenerator_h
+#define cmExportInstallFileGenerator_h
+
+#include "cmExportFileGenerator.h"
+
+class cmInstallExportGenerator;
+class cmInstallFilesGenerator;
+class cmInstallTargetGenerator;
+class cmTargetExport;
+
+/** \class cmExportInstallFileGenerator
+ * \brief Generate a file exporting targets from an install tree.
+ *
+ * cmExportInstallFileGenerator generates files exporting targets from
+ * install an installation tree.  The files are placed in a temporary
+ * location for installation by cmInstallExportGenerator.  One main
+ * file is generated that creates the imported targets and loads
+ * per-configuration files.  Target locations and settings for each
+ * configuration are written to these per-configuration files.  After
+ * installation the main file loads the configurations that have been
+ * installed.
+ *
+ * This is used to implement the INSTALL(EXPORT) command.
+ */
+class cmExportInstallFileGenerator: public cmExportFileGenerator
+{
+public:
+  /** Construct with the export installer that will install the
+      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.  */
+  std::map<cmStdString, cmStdString> const& GetConfigImportFiles()
+    { return this->ConfigImportFiles; }
+protected:
+
+  // Implement virtual methods from the superclass.
+  virtual bool GenerateMainFile(std::ostream& os);
+  virtual void GenerateImportTargetsConfig(std::ostream& os,
+                                           const char* config,
+                                           std::string const& suffix);
+  virtual void ComplainAboutMissingTarget(cmTarget* target, const char* dep);
+
+  /** Generate a per-configuration file for the targets.  */
+  bool GenerateImportFileConfig(const char* config);
+
+  /** Fill in properties indicating installed file locations.  */
+  void SetImportLocationProperty(const char* config,
+                                 std::string const& suffix,
+                                 cmInstallTargetGenerator* itgen,
+                                 ImportPropertyMap& properties);
+
+  void ComplainAboutImportPrefix(cmInstallTargetGenerator* itgen);
+
+  cmInstallExportGenerator* InstallExportGenerator;
+  std::string Name;
+  std::vector<cmTargetExport*> const* ExportSet;
+
+  std::string ImportPrefix;
+
+  // The import file generated for each configuration.
+  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