CMake/Source/cmPolicies.h
Stephen Kelly d0a76ea07c Introduce the INTERFACE_LINK_LIBRARIES property.
This property replaces the properties which
match (IMPORTED_)?LINK_INTERFACE_LIBRARIES(_<CONFIG>)?, and is enabled
for IMPORTED targets, and for non-IMPORTED targets only with a policy.

For static libraries, the INTERFACE_LINK_LIBRARIES property is
also used as the source of transitive usage requirements content.
Static libraries still require users to link to all entries in
their LINK_LIBRARIES, but usage requirements such as INCLUDE_DIRECTORIES
COMPILE_DEFINITIONS and COMPILE_OPTIONS can be restricted to only
certain interface libraries.

Because the INTERFACE_LINK_LIBRARIES property is populated unconditionally,
we need to compare the evaluated result of it with the link implementation
to determine whether to issue the policy warning for static libraries. For
shared libraries, the policy warning is issued if the contents of
the INTERFACE_LINK_LIBRARIES property differs from the contents of the
relevant config-specific old LINK_INTERFACE_LIBRARIES property.
2013-07-08 22:39:09 +02:00

136 lines
5.1 KiB
C++

/*============================================================================
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
/** \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);
///! Get docs for policies
void GetDocumentation(std::vector<cmDocumentationEntry>& v);
/** 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