mirror of
https://github.com/reactos/CMake.git
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162 lines
4.5 KiB
C++
162 lines
4.5 KiB
C++
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing for details. */
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#include "cmCMakePolicyCommand.h"
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#include <sstream>
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#include "cmMakefile.h"
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#include "cmPolicies.h"
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#include "cmState.h"
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#include "cmStateTypes.h"
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#include "cmake.h"
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class cmExecutionStatus;
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// cmCMakePolicyCommand
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bool cmCMakePolicyCommand::InitialPass(std::vector<std::string> const& args,
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cmExecutionStatus&)
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{
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if (args.empty()) {
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this->SetError("requires at least one argument.");
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return false;
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}
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if (args[0] == "SET") {
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return this->HandleSetMode(args);
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}
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if (args[0] == "GET") {
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return this->HandleGetMode(args);
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}
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if (args[0] == "PUSH") {
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if (args.size() > 1) {
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this->SetError("PUSH may not be given additional arguments.");
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return false;
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}
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this->Makefile->PushPolicy();
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return true;
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}
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if (args[0] == "POP") {
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if (args.size() > 1) {
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this->SetError("POP may not be given additional arguments.");
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return false;
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}
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this->Makefile->PopPolicy();
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return true;
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}
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if (args[0] == "VERSION") {
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return this->HandleVersionMode(args);
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}
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std::ostringstream e;
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e << "given unknown first argument \"" << args[0] << "\"";
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this->SetError(e.str());
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return false;
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}
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bool cmCMakePolicyCommand::HandleSetMode(std::vector<std::string> const& args)
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{
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if (args.size() != 3) {
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this->SetError("SET must be given exactly 2 additional arguments.");
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return false;
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}
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cmPolicies::PolicyStatus status;
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if (args[2] == "OLD") {
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status = cmPolicies::OLD;
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} else if (args[2] == "NEW") {
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status = cmPolicies::NEW;
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} else {
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std::ostringstream e;
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e << "SET given unrecognized policy status \"" << args[2] << "\"";
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this->SetError(e.str());
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return false;
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}
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if (!this->Makefile->SetPolicy(args[1].c_str(), status)) {
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this->SetError("SET failed to set policy.");
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return false;
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}
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if (args[1] == "CMP0001" &&
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(status == cmPolicies::WARN || status == cmPolicies::OLD)) {
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if (!(this->Makefile->GetState()->GetInitializedCacheValue(
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"CMAKE_BACKWARDS_COMPATIBILITY"))) {
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// Set it to 2.4 because that is the last version where the
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// variable had meaning.
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this->Makefile->AddCacheDefinition(
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"CMAKE_BACKWARDS_COMPATIBILITY", "2.4",
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"For backwards compatibility, what version of CMake "
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"commands and "
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"syntax should this version of CMake try to support.",
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cmStateEnums::STRING);
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}
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}
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return true;
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}
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bool cmCMakePolicyCommand::HandleGetMode(std::vector<std::string> const& args)
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{
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if (args.size() != 3) {
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this->SetError("GET must be given exactly 2 additional arguments.");
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return false;
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}
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// Get arguments.
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std::string const& id = args[1];
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std::string const& var = args[2];
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// Lookup the policy number.
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cmPolicies::PolicyID pid;
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if (!cmPolicies::GetPolicyID(id.c_str(), pid)) {
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std::ostringstream e;
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e << "GET given policy \"" << id << "\" which is not known to this "
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<< "version of CMake.";
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this->SetError(e.str());
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return false;
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}
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// Lookup the policy setting.
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cmPolicies::PolicyStatus status = this->Makefile->GetPolicyStatus(pid);
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switch (status) {
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case cmPolicies::OLD:
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// Report that the policy is set to OLD.
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this->Makefile->AddDefinition(var, "OLD");
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break;
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case cmPolicies::WARN:
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// Report that the policy is not set.
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this->Makefile->AddDefinition(var, "");
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break;
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case cmPolicies::NEW:
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// Report that the policy is set to NEW.
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this->Makefile->AddDefinition(var, "NEW");
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break;
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case cmPolicies::REQUIRED_IF_USED:
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case cmPolicies::REQUIRED_ALWAYS:
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// The policy is required to be set before anything needs it.
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{
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std::ostringstream e;
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e << cmPolicies::GetRequiredPolicyError(pid) << "\n"
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<< "The call to cmake_policy(GET " << id << " ...) at which this "
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<< "error appears requests the policy, and this version of CMake "
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<< "requires that the policy be set to NEW before it is checked.";
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this->Makefile->IssueMessage(cmake::FATAL_ERROR, e.str());
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}
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}
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return true;
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}
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bool cmCMakePolicyCommand::HandleVersionMode(
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std::vector<std::string> const& args)
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{
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if (args.size() <= 1) {
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this->SetError("VERSION not given an argument");
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return false;
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}
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if (args.size() >= 3) {
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this->SetError("VERSION given too many arguments");
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return false;
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}
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this->Makefile->SetPolicyVersion(args[1].c_str());
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return true;
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}
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