CMake/Source/cmExportFileGenerator.h
Brad King 86578eccf2 Simplify CMake per-source license notices
Per-source copyright/license notice headers that spell out copyright holder
names and years are hard to maintain and often out-of-date or plain wrong.
Precise contributor information is already maintained automatically by the
version control tool.  Ultimately it is the receiver of a file who is
responsible for determining its licensing status, and per-source notices are
merely a convenience.  Therefore it is simpler and more accurate for
each source to have a generic notice of the license name and references to
more detailed information on copyright holders and full license terms.

Our `Copyright.txt` file now contains a list of Contributors whose names
appeared source-level copyright notices.  It also references version control
history for more precise information.  Therefore we no longer need to spell
out the list of Contributors in each source file notice.

Replace CMake per-source copyright/license notice headers with a short
description of the license and links to `Copyright.txt` and online information
available from "https://cmake.org/licensing".  The online URL also handles
cases of modules being copied out of our source into other projects, so we
can drop our notices about replacing links with full license text.

Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority
of the replacements mechanically.  Manually fix up shebang lines and trailing
newlines in a few files.  Manually update the notices in a few files that the
script does not handle.
2016-09-27 15:14:44 -04:00

208 lines
8.4 KiB
C++

/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#ifndef cmExportFileGenerator_h
#define cmExportFileGenerator_h
#include <cmConfigure.h> // IWYU pragma: keep
#include "cmGeneratorExpression.h"
#include "cmVersion.h"
#include "cmVersionConfig.h"
#include <iosfwd>
#include <map>
#include <set>
#include <string>
#include <vector>
class cmGeneratorTarget;
#define STRINGIFY_HELPER(X) #X
#define STRINGIFY(X) STRINGIFY_HELPER(X)
#define DEVEL_CMAKE_VERSION(major, minor) \
(CMake_VERSION_ENCODE(major, minor, 0) > \
CMake_VERSION_ENCODE(CMake_VERSION_MAJOR, CMake_VERSION_MINOR, 0) \
? STRINGIFY(CMake_VERSION_MAJOR) "." STRINGIFY( \
CMake_VERSION_MINOR) "." STRINGIFY(CMake_VERSION_PATCH) \
: #major "." #minor ".0")
class cmTargetExport;
/** \class cmExportFileGenerator
* \brief Generate a file exporting targets from a build or install tree.
*
* cmExportFileGenerator is the superclass for
* cmExportBuildFileGenerator and cmExportInstallFileGenerator. It
* contains common code generation routines for the two kinds of
* export implementations.
*/
class cmExportFileGenerator
{
public:
cmExportFileGenerator();
virtual ~cmExportFileGenerator() {}
/** Set the full path to the export file to generate. */
void SetExportFile(const char* mainFile);
const char* GetMainExportFileName() const;
/** Set the namespace in which to place exported target names. */
void SetNamespace(const std::string& ns) { this->Namespace = ns; }
std::string GetNamespace() const { return this->Namespace; }
void SetExportOld(bool exportOld) { this->ExportOld = exportOld; }
/** Add a configuration to be exported. */
void AddConfiguration(const std::string& config);
/** Actually generate the export file. Returns whether there was an
error. */
bool GenerateImportFile();
protected:
typedef std::map<std::string, std::string> ImportPropertyMap;
// Generate per-configuration target information to the given output
// stream.
void GenerateImportConfig(std::ostream& os, const std::string& config,
std::vector<std::string>& missingTargets);
// Methods to implement export file code generation.
virtual void GeneratePolicyHeaderCode(std::ostream& os);
virtual void GeneratePolicyFooterCode(std::ostream& os);
virtual void GenerateImportHeaderCode(std::ostream& os,
const std::string& config = "");
virtual void GenerateImportFooterCode(std::ostream& os);
void GenerateImportVersionCode(std::ostream& os);
virtual void GenerateImportTargetCode(std::ostream& os,
cmGeneratorTarget const* target);
virtual void GenerateImportPropertyCode(std::ostream& os,
const std::string& config,
cmGeneratorTarget const* target,
ImportPropertyMap const& properties);
virtual void GenerateImportedFileChecksCode(
std::ostream& os, cmGeneratorTarget* target,
ImportPropertyMap const& properties,
const std::set<std::string>& importedLocations);
virtual void GenerateImportedFileCheckLoop(std::ostream& os);
virtual void GenerateMissingTargetsCheckCode(
std::ostream& os, const std::vector<std::string>& missingTargets);
virtual void GenerateExpectedTargetsCode(std::ostream& os,
const std::string& expectedTargets);
// Collect properties with detailed information about targets beyond
// their location on disk.
void SetImportDetailProperties(const std::string& config,
std::string const& suffix,
cmGeneratorTarget* target,
ImportPropertyMap& properties,
std::vector<std::string>& missingTargets);
template <typename T>
void SetImportLinkProperty(std::string const& suffix,
cmGeneratorTarget* target,
const std::string& propName,
std::vector<T> const& entries,
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;
/** Each subclass knows where the target files are located. */
virtual void GenerateImportTargetsConfig(
std::ostream& os, const std::string& config, std::string const& suffix,
std::vector<std::string>& missingTargets) = 0;
/** Each subclass knows how to deal with a target that is missing from an
* export set. */
virtual void HandleMissingTarget(std::string& link_libs,
std::vector<std::string>& missingTargets,
cmGeneratorTarget* depender,
cmGeneratorTarget* dependee) = 0;
void PopulateInterfaceProperty(const std::string&, cmGeneratorTarget* target,
cmGeneratorExpression::PreprocessContext,
ImportPropertyMap& properties,
std::vector<std::string>& missingTargets);
bool PopulateInterfaceLinkLibrariesProperty(
cmGeneratorTarget* target, cmGeneratorExpression::PreprocessContext,
ImportPropertyMap& properties, std::vector<std::string>& missingTargets);
void PopulateInterfaceProperty(const std::string& propName,
cmGeneratorTarget* target,
ImportPropertyMap& properties);
void PopulateCompatibleInterfaceProperties(cmGeneratorTarget* target,
ImportPropertyMap& properties);
virtual void GenerateInterfaceProperties(
cmGeneratorTarget const* target, std::ostream& os,
const ImportPropertyMap& properties);
void PopulateIncludeDirectoriesInterface(
cmTargetExport* target,
cmGeneratorExpression::PreprocessContext preprocessRule,
ImportPropertyMap& properties, std::vector<std::string>& missingTargets);
void PopulateSourcesInterface(
cmTargetExport* target,
cmGeneratorExpression::PreprocessContext preprocessRule,
ImportPropertyMap& properties, std::vector<std::string>& missingTargets);
void SetImportLinkInterface(
const std::string& config, std::string const& suffix,
cmGeneratorExpression::PreprocessContext preprocessRule,
cmGeneratorTarget* target, ImportPropertyMap& properties,
std::vector<std::string>& missingTargets);
enum FreeTargetsReplace
{
ReplaceFreeTargets,
NoReplaceFreeTargets
};
void ResolveTargetsInGeneratorExpressions(
std::string& input, cmGeneratorTarget* target,
std::vector<std::string>& missingTargets,
FreeTargetsReplace replace = NoReplaceFreeTargets);
virtual void GenerateRequiredCMakeVersion(std::ostream& os,
const char* versionString);
// The namespace in which the exports are placed in the generated file.
std::string Namespace;
bool ExportOld;
// The set of configurations to export.
std::vector<std::string> Configurations;
// The file to generate.
std::string MainImportFile;
std::string FileDir;
std::string FileBase;
std::string FileExt;
bool AppendMode;
// The set of targets included in the export.
std::set<cmGeneratorTarget*> ExportedTargets;
private:
void PopulateInterfaceProperty(const std::string&, const std::string&,
cmGeneratorTarget* target,
cmGeneratorExpression::PreprocessContext,
ImportPropertyMap& properties,
std::vector<std::string>& missingTargets);
bool AddTargetNamespace(std::string& input, cmGeneratorTarget* target,
std::vector<std::string>& missingTargets);
void ResolveTargetsInGeneratorExpression(
std::string& input, cmGeneratorTarget* target,
std::vector<std::string>& missingTargets);
virtual void ReplaceInstallPrefix(std::string& input);
virtual std::string InstallNameDir(cmGeneratorTarget* target,
const std::string& config) = 0;
};
#endif