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/*============================================================================
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 cmPolicies_h
#define cmPolicies_h
#include "cmCustomCommand.h"
class cmake;
class cmMakefile;
class cmPolicy;
/** \class cmPolicies
* \brief Handles changes in CMake behavior and policies
*
* See the cmake wiki section on
* <a href="http://www.cmake.org/Wiki/CMake/Policies">policies</a>
* for an overview of this class's purpose
*/
class cmPolicies
{
public:
cmPolicies();
~cmPolicies();
/// Status of a policy
enum PolicyStatus {
OLD, ///< Use old behavior
WARN, ///< Use old behavior but issue a warning
NEW, ///< Use new behavior
/// Issue an error if user doesn't set policy status to NEW and hits the
/// check
REQUIRED_IF_USED,
REQUIRED_ALWAYS ///< Issue an error unless user sets policy status to NEW.
};
static const char* PolicyStatusNames[];
/// Policy identifiers
enum PolicyID
{
CMP0000, ///< Policy version specification
CMP0001, ///< Ignore old compatibility variable
CMP0002, ///< Target names must be unique
CMP0003, ///< Linking does not include extra -L paths
CMP0004, ///< Libraries linked may not have leading or trailing whitespace
CMP0005, ///< Definition value escaping
CMP0006, ///< BUNDLE install rules needed for MACOSX_BUNDLE targets
CMP0007, ///< list command handling of empty elements
CMP0008, ///< Full-path libraries must be a valid library file name
CMP0009, ///< GLOB_RECURSE should not follow symlinks by default
CMP0010, ///< Bad variable reference syntax is an error
CMP0011, ///< Strong policy scope for include and find_package
CMP0012, ///< Recognize numbers and boolean constants in if()
CMP0013, ///< Duplicate binary directories not allowed
CMP0014, ///< Input directories must have CMakeLists.txt
CMP0015, ///< link_directories() treats paths relative to source dir
/// target_link_libraries() fails if only argument is not a target
CMP0016,
CMP0017, ///< Prefer files in CMAKE_ROOT when including from CMAKE_ROOT
CMP0018, ///< Ignore language flags for shared libs, and adhere to
/// POSITION_INDEPENDENT_CODE property and *_COMPILE_OPTIONS_PI{E,C}
/// instead.
CMP0019, ///< No variable re-expansion in include and link info
CMP0020, ///< Automatically link Qt executables to qtmain target
CMP0021, ///< Fatal error on relative paths in INCLUDE_DIRECTORIES
/// target property
CMP0022, ///< INTERFACE_LINK_LIBRARIES defines the link interface
CMP0023, ///< Disallow mixing keyword and plain tll signatures
CMP0024, ///< Disallow including export() result.
CMP0025, ///< Compiler id for Apple Clang is now AppleClang
CMP0026, ///< Disallow use of the LOCATION target property.
/** \brief Always the last entry.
*
* Useful mostly to avoid adding a comma the last policy when adding a new
* one.
*/
CMPCOUNT
};
///! convert a string policy ID into a number
bool GetPolicyID(const char *id, /* out */ cmPolicies::PolicyID &pid);
std::string GetPolicyIDString(cmPolicies::PolicyID pid);
///! Get the default status for a policy
cmPolicies::PolicyStatus GetPolicyStatus(cmPolicies::PolicyID id);
///! Define a Policy for CMake
void DefinePolicy(cmPolicies::PolicyID id,
const char *stringID,
const char *shortDescription,
const char *longDescription,
unsigned int majorVersionIntroduced,
unsigned int minorVersionIntroduced,
unsigned int patchVersionIntroduced,
unsigned int tweakVersionIntroduced,
cmPolicies::PolicyStatus status);
///! Set a policy level for this listfile
bool ApplyPolicyVersion(cmMakefile *mf, const char *version);
///! return a warning string for a given policy
std::string GetPolicyWarning(cmPolicies::PolicyID id);
///! return an error string for when a required policy is unspecified
std::string GetRequiredPolicyError(cmPolicies::PolicyID id);
///! return an error string for when a required policy is unspecified
std::string GetRequiredAlwaysPolicyError(cmPolicies::PolicyID id);
/** Represent a set of policy values. */
typedef std::map<PolicyID, PolicyStatus> PolicyMap;
private:
// might have to make these internal for VS6 not sure yet
std::map<PolicyID,cmPolicy *> Policies;
std::map<std::string,PolicyID> PolicyStringMap;
void DiagnoseAncientPolicies(std::vector<PolicyID> const& ancient,
unsigned int majorVer, unsigned int minorVer,
unsigned int patchVer, cmMakefile* mf);
bool GetPolicyDefault(cmMakefile* mf, std::string const& policy,
cmPolicies::PolicyStatus* defaultStatus);
};
#endif
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