| /* Distributed under the OSI-approved BSD 3-Clause License. See accompanying |
| file Copyright.txt or https://cmake.org/licensing for details. */ |
| #include "cmProjectCommand.h" |
| |
| #include <array> |
| #include <cstddef> |
| #include <cstdio> |
| #include <functional> |
| #include <limits> |
| #include <utility> |
| |
| #include "cmsys/RegularExpression.hxx" |
| |
| #include "cmExecutionStatus.h" |
| #include "cmMakefile.h" |
| #include "cmMessageType.h" |
| #include "cmPolicies.h" |
| #include "cmStateTypes.h" |
| #include "cmStringAlgorithms.h" |
| #include "cmSystemTools.h" |
| #include "cmValue.h" |
| |
| static bool IncludeByVariable(cmExecutionStatus& status, |
| const std::string& variable); |
| static void TopLevelCMakeVarCondSet(cmMakefile& mf, std::string const& name, |
| std::string const& value); |
| |
| bool cmProjectCommand(std::vector<std::string> const& args, |
| cmExecutionStatus& status) |
| { |
| if (args.empty()) { |
| status.SetError("PROJECT called with incorrect number of arguments"); |
| return false; |
| } |
| |
| cmMakefile& mf = status.GetMakefile(); |
| if (mf.IsRootMakefile() && |
| !mf.GetDefinition("CMAKE_MINIMUM_REQUIRED_VERSION")) { |
| mf.IssueMessage( |
| MessageType::AUTHOR_WARNING, |
| "cmake_minimum_required() should be called prior to this top-level " |
| "project() call. Please see the cmake-commands(7) manual for usage " |
| "documentation of both commands."); |
| } |
| |
| if (!IncludeByVariable(status, "CMAKE_PROJECT_INCLUDE_BEFORE")) { |
| return false; |
| } |
| |
| std::string const& projectName = args[0]; |
| |
| if (!IncludeByVariable(status, |
| "CMAKE_PROJECT_" + projectName + "_INCLUDE_BEFORE")) { |
| return false; |
| } |
| |
| mf.SetProjectName(projectName); |
| |
| mf.AddCacheDefinition(projectName + "_BINARY_DIR", |
| mf.GetCurrentBinaryDirectory(), |
| "Value Computed by CMake", cmStateEnums::STATIC); |
| mf.AddCacheDefinition(projectName + "_SOURCE_DIR", |
| mf.GetCurrentSourceDirectory(), |
| "Value Computed by CMake", cmStateEnums::STATIC); |
| |
| mf.AddDefinition("PROJECT_BINARY_DIR", mf.GetCurrentBinaryDirectory()); |
| mf.AddDefinition("PROJECT_SOURCE_DIR", mf.GetCurrentSourceDirectory()); |
| |
| mf.AddDefinition("PROJECT_NAME", projectName); |
| |
| mf.AddDefinitionBool("PROJECT_IS_TOP_LEVEL", mf.IsRootMakefile()); |
| mf.AddCacheDefinition(projectName + "_IS_TOP_LEVEL", |
| mf.IsRootMakefile() ? "ON" : "OFF", |
| "Value Computed by CMake", cmStateEnums::STATIC); |
| |
| // Set the CMAKE_PROJECT_NAME variable to be the highest-level |
| // project name in the tree. If there are two project commands |
| // in the same CMakeLists.txt file, and it is the top level |
| // CMakeLists.txt file, then go with the last one, so that |
| // CMAKE_PROJECT_NAME will match PROJECT_NAME, and cmake --build |
| // will work. |
| if (!mf.GetDefinition("CMAKE_PROJECT_NAME") || mf.IsRootMakefile()) { |
| mf.RemoveDefinition("CMAKE_PROJECT_NAME"); |
| mf.AddCacheDefinition("CMAKE_PROJECT_NAME", projectName, |
| "Value Computed by CMake", cmStateEnums::STATIC); |
| } |
| |
| bool haveVersion = false; |
| bool haveLanguages = false; |
| bool haveDescription = false; |
| bool haveHomepage = false; |
| bool injectedProjectCommand = false; |
| std::string version; |
| std::string description; |
| std::string homepage; |
| std::vector<std::string> languages; |
| std::function<void()> missedValueReporter; |
| auto resetReporter = [&missedValueReporter]() { |
| missedValueReporter = std::function<void()>(); |
| }; |
| enum Doing |
| { |
| DoingDescription, |
| DoingHomepage, |
| DoingLanguages, |
| DoingVersion |
| }; |
| Doing doing = DoingLanguages; |
| for (size_t i = 1; i < args.size(); ++i) { |
| if (args[i] == "LANGUAGES") { |
| if (haveLanguages) { |
| mf.IssueMessage(MessageType::FATAL_ERROR, |
| "LANGUAGES may be specified at most once."); |
| cmSystemTools::SetFatalErrorOccurred(); |
| return true; |
| } |
| haveLanguages = true; |
| if (missedValueReporter) { |
| missedValueReporter(); |
| } |
| doing = DoingLanguages; |
| if (!languages.empty()) { |
| std::string msg = cmStrCat( |
| "the following parameters must be specified after LANGUAGES " |
| "keyword: ", |
| cmJoin(languages, ", "), '.'); |
| mf.IssueMessage(MessageType::WARNING, msg); |
| } |
| } else if (args[i] == "VERSION") { |
| if (haveVersion) { |
| mf.IssueMessage(MessageType::FATAL_ERROR, |
| "VERSION may be specified at most once."); |
| cmSystemTools::SetFatalErrorOccurred(); |
| return true; |
| } |
| haveVersion = true; |
| if (missedValueReporter) { |
| missedValueReporter(); |
| } |
| doing = DoingVersion; |
| missedValueReporter = [&mf, &resetReporter]() { |
| mf.IssueMessage( |
| MessageType::WARNING, |
| "VERSION keyword not followed by a value or was followed by a " |
| "value that expanded to nothing."); |
| resetReporter(); |
| }; |
| } else if (args[i] == "DESCRIPTION") { |
| if (haveDescription) { |
| mf.IssueMessage(MessageType::FATAL_ERROR, |
| "DESCRIPTION may be specified at most once."); |
| cmSystemTools::SetFatalErrorOccurred(); |
| return true; |
| } |
| haveDescription = true; |
| if (missedValueReporter) { |
| missedValueReporter(); |
| } |
| doing = DoingDescription; |
| missedValueReporter = [&mf, &resetReporter]() { |
| mf.IssueMessage( |
| MessageType::WARNING, |
| "DESCRIPTION keyword not followed by a value or was followed " |
| "by a value that expanded to nothing."); |
| resetReporter(); |
| }; |
| } else if (args[i] == "HOMEPAGE_URL") { |
| if (haveHomepage) { |
| mf.IssueMessage(MessageType::FATAL_ERROR, |
| "HOMEPAGE_URL may be specified at most once."); |
| cmSystemTools::SetFatalErrorOccurred(); |
| return true; |
| } |
| haveHomepage = true; |
| doing = DoingHomepage; |
| missedValueReporter = [&mf, &resetReporter]() { |
| mf.IssueMessage( |
| MessageType::WARNING, |
| "HOMEPAGE_URL keyword not followed by a value or was followed " |
| "by a value that expanded to nothing."); |
| resetReporter(); |
| }; |
| } else if (i == 1 && args[i] == "__CMAKE_INJECTED_PROJECT_COMMAND__") { |
| injectedProjectCommand = true; |
| } else if (doing == DoingVersion) { |
| doing = DoingLanguages; |
| version = args[i]; |
| resetReporter(); |
| } else if (doing == DoingDescription) { |
| doing = DoingLanguages; |
| description = args[i]; |
| resetReporter(); |
| } else if (doing == DoingHomepage) { |
| doing = DoingLanguages; |
| homepage = args[i]; |
| resetReporter(); |
| } else // doing == DoingLanguages |
| { |
| languages.push_back(args[i]); |
| } |
| } |
| |
| if (missedValueReporter) { |
| missedValueReporter(); |
| } |
| |
| if ((haveVersion || haveDescription || haveHomepage) && !haveLanguages && |
| !languages.empty()) { |
| mf.IssueMessage(MessageType::FATAL_ERROR, |
| "project with VERSION, DESCRIPTION or HOMEPAGE_URL must " |
| "use LANGUAGES before language names."); |
| cmSystemTools::SetFatalErrorOccurred(); |
| return true; |
| } |
| if (haveLanguages && languages.empty()) { |
| languages.emplace_back("NONE"); |
| } |
| |
| cmPolicies::PolicyStatus const cmp0048 = |
| mf.GetPolicyStatus(cmPolicies::CMP0048); |
| if (haveVersion) { |
| // Set project VERSION variables to given values |
| if (cmp0048 == cmPolicies::OLD || cmp0048 == cmPolicies::WARN) { |
| mf.IssueMessage(MessageType::FATAL_ERROR, |
| "VERSION not allowed unless CMP0048 is set to NEW"); |
| cmSystemTools::SetFatalErrorOccurred(); |
| return true; |
| } |
| |
| cmsys::RegularExpression vx( |
| R"(^([0-9]+(\.[0-9]+(\.[0-9]+(\.[0-9]+)?)?)?)?$)"); |
| if (!vx.find(version)) { |
| std::string e = R"(VERSION ")" + version + R"(" format invalid.)"; |
| mf.IssueMessage(MessageType::FATAL_ERROR, e); |
| cmSystemTools::SetFatalErrorOccurred(); |
| return true; |
| } |
| |
| cmPolicies::PolicyStatus const cmp0096 = |
| mf.GetPolicyStatus(cmPolicies::CMP0096); |
| |
| constexpr std::size_t MAX_VERSION_COMPONENTS = 4u; |
| std::string version_string; |
| std::array<std::string, MAX_VERSION_COMPONENTS> version_components; |
| |
| if (cmp0096 == cmPolicies::OLD || cmp0096 == cmPolicies::WARN) { |
| constexpr size_t maxIntLength = |
| std::numeric_limits<unsigned>::digits10 + 2; |
| char vb[MAX_VERSION_COMPONENTS][maxIntLength]; |
| unsigned v[MAX_VERSION_COMPONENTS] = { 0, 0, 0, 0 }; |
| const int vc = std::sscanf(version.c_str(), "%u.%u.%u.%u", &v[0], &v[1], |
| &v[2], &v[3]); |
| for (auto i = 0u; i < MAX_VERSION_COMPONENTS; ++i) { |
| if (static_cast<int>(i) < vc) { |
| std::snprintf(vb[i], maxIntLength, "%u", v[i]); |
| version_string += &"."[static_cast<std::size_t>(i == 0)]; |
| version_string += vb[i]; |
| version_components[i] = vb[i]; |
| } else { |
| vb[i][0] = '\x00'; |
| } |
| } |
| } else { |
| // The regex above verified that we have a .-separated string of |
| // non-negative integer components. Keep the original string. |
| version_string = std::move(version); |
| // Split the integer components. |
| auto components = cmSystemTools::SplitString(version_string, '.'); |
| for (auto i = 0u; i < components.size(); ++i) { |
| version_components[i] = std::move(components[i]); |
| } |
| } |
| |
| std::string vv; |
| vv = projectName + "_VERSION"; |
| mf.AddDefinition("PROJECT_VERSION", version_string); |
| mf.AddDefinition(vv, version_string); |
| vv = projectName + "_VERSION_MAJOR"; |
| mf.AddDefinition("PROJECT_VERSION_MAJOR", version_components[0]); |
| mf.AddDefinition(vv, version_components[0]); |
| vv = projectName + "_VERSION_MINOR"; |
| mf.AddDefinition("PROJECT_VERSION_MINOR", version_components[1]); |
| mf.AddDefinition(vv, version_components[1]); |
| vv = projectName + "_VERSION_PATCH"; |
| mf.AddDefinition("PROJECT_VERSION_PATCH", version_components[2]); |
| mf.AddDefinition(vv, version_components[2]); |
| vv = projectName + "_VERSION_TWEAK"; |
| mf.AddDefinition("PROJECT_VERSION_TWEAK", version_components[3]); |
| mf.AddDefinition(vv, version_components[3]); |
| // Also, try set top level variables |
| TopLevelCMakeVarCondSet(mf, "CMAKE_PROJECT_VERSION", version_string); |
| TopLevelCMakeVarCondSet(mf, "CMAKE_PROJECT_VERSION_MAJOR", |
| version_components[0]); |
| TopLevelCMakeVarCondSet(mf, "CMAKE_PROJECT_VERSION_MINOR", |
| version_components[1]); |
| TopLevelCMakeVarCondSet(mf, "CMAKE_PROJECT_VERSION_PATCH", |
| version_components[2]); |
| TopLevelCMakeVarCondSet(mf, "CMAKE_PROJECT_VERSION_TWEAK", |
| version_components[3]); |
| } else if (cmp0048 != cmPolicies::OLD) { |
| // Set project VERSION variables to empty |
| std::vector<std::string> vv = { "PROJECT_VERSION", |
| "PROJECT_VERSION_MAJOR", |
| "PROJECT_VERSION_MINOR", |
| "PROJECT_VERSION_PATCH", |
| "PROJECT_VERSION_TWEAK", |
| projectName + "_VERSION", |
| projectName + "_VERSION_MAJOR", |
| projectName + "_VERSION_MINOR", |
| projectName + "_VERSION_PATCH", |
| projectName + "_VERSION_TWEAK" }; |
| if (mf.IsRootMakefile()) { |
| vv.emplace_back("CMAKE_PROJECT_VERSION"); |
| vv.emplace_back("CMAKE_PROJECT_VERSION_MAJOR"); |
| vv.emplace_back("CMAKE_PROJECT_VERSION_MINOR"); |
| vv.emplace_back("CMAKE_PROJECT_VERSION_PATCH"); |
| vv.emplace_back("CMAKE_PROJECT_VERSION_TWEAK"); |
| } |
| std::string vw; |
| for (std::string const& i : vv) { |
| cmValue v = mf.GetDefinition(i); |
| if (cmNonempty(v)) { |
| if (cmp0048 == cmPolicies::WARN) { |
| if (!injectedProjectCommand) { |
| vw += "\n "; |
| vw += i; |
| } |
| } else { |
| mf.AddDefinition(i, ""); |
| } |
| } |
| } |
| if (!vw.empty()) { |
| mf.IssueMessage( |
| MessageType::AUTHOR_WARNING, |
| cmStrCat(cmPolicies::GetPolicyWarning(cmPolicies::CMP0048), |
| "\nThe following variable(s) would be set to empty:", vw)); |
| } |
| } |
| |
| mf.AddDefinition("PROJECT_DESCRIPTION", description); |
| mf.AddDefinition(projectName + "_DESCRIPTION", description); |
| TopLevelCMakeVarCondSet(mf, "CMAKE_PROJECT_DESCRIPTION", description); |
| |
| mf.AddDefinition("PROJECT_HOMEPAGE_URL", homepage); |
| mf.AddDefinition(projectName + "_HOMEPAGE_URL", homepage); |
| TopLevelCMakeVarCondSet(mf, "CMAKE_PROJECT_HOMEPAGE_URL", homepage); |
| |
| if (languages.empty()) { |
| // if no language is specified do c and c++ |
| languages = { "C", "CXX" }; |
| } |
| mf.EnableLanguage(languages, false); |
| |
| if (!IncludeByVariable(status, "CMAKE_PROJECT_INCLUDE")) { |
| return false; |
| } |
| |
| if (!IncludeByVariable(status, |
| "CMAKE_PROJECT_" + projectName + "_INCLUDE")) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static bool IncludeByVariable(cmExecutionStatus& status, |
| const std::string& variable) |
| { |
| cmMakefile& mf = status.GetMakefile(); |
| cmValue include = mf.GetDefinition(variable); |
| if (!include) { |
| return true; |
| } |
| |
| std::string includeFile = |
| cmSystemTools::CollapseFullPath(*include, mf.GetCurrentSourceDirectory()); |
| if (!cmSystemTools::FileExists(includeFile)) { |
| status.SetError(cmStrCat("could not find requested file:\n ", *include)); |
| return false; |
| } |
| if (cmSystemTools::FileIsDirectory(includeFile)) { |
| status.SetError(cmStrCat("requested file is a directory:\n ", *include)); |
| return false; |
| } |
| |
| const bool readit = mf.ReadDependentFile(*include); |
| if (readit) { |
| return true; |
| } |
| |
| if (cmSystemTools::GetFatalErrorOccurred()) { |
| return true; |
| } |
| |
| status.SetError(cmStrCat("could not load requested file:\n ", *include)); |
| return false; |
| } |
| |
| static void TopLevelCMakeVarCondSet(cmMakefile& mf, std::string const& name, |
| std::string const& value) |
| { |
| // Set the CMAKE_PROJECT_XXX variable to be the highest-level |
| // project name in the tree. If there are two project commands |
| // in the same CMakeLists.txt file, and it is the top level |
| // CMakeLists.txt file, then go with the last one. |
| if (!mf.GetDefinition(name) || mf.IsRootMakefile()) { |
| mf.RemoveDefinition(name); |
| mf.AddCacheDefinition(name, value, "Value Computed by CMake", |
| cmStateEnums::STATIC); |
| } |
| } |
