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cmake/Source/cmExportFileGenerator.cxx

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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmExportFileGenerator.h"
#include <cassert>
#include <cstring>
#include <sstream>
#include <utility>
#include <cm/memory>
#include "cmsys/FStream.hxx"
#include "cmComputeLinkInformation.h"
#include "cmGeneratedFileStream.h"
#include "cmGeneratorTarget.h"
#include "cmGlobalGenerator.h"
#include "cmLinkItem.h"
#include "cmLocalGenerator.h"
#include "cmMakefile.h"
#include "cmMessageType.h"
#include "cmOutputConverter.h"
#include "cmPolicies.h"
#include "cmProperty.h"
#include "cmPropertyMap.h"
#include "cmStateTypes.h"
#include "cmStringAlgorithms.h"
#include "cmSystemTools.h"
#include "cmTarget.h"
#include "cmTargetExport.h"
static std::string cmExportFileGeneratorEscape(std::string const& str)
{
// Escape a property value for writing into a .cmake file.
std::string result = cmOutputConverter::EscapeForCMake(str);
// Un-escape variable references generated by our own export code.
cmSystemTools::ReplaceString(result, "\\${_IMPORT_PREFIX}",
"${_IMPORT_PREFIX}");
cmSystemTools::ReplaceString(result, "\\${CMAKE_IMPORT_LIBRARY_SUFFIX}",
"${CMAKE_IMPORT_LIBRARY_SUFFIX}");
return result;
}
cmExportFileGenerator::cmExportFileGenerator()
{
this->AppendMode = false;
this->ExportOld = false;
}
void cmExportFileGenerator::AddConfiguration(const std::string& config)
{
this->Configurations.push_back(config);
}
void cmExportFileGenerator::SetExportFile(const char* mainFile)
{
this->MainImportFile = mainFile;
this->FileDir = cmSystemTools::GetFilenamePath(this->MainImportFile);
this->FileBase =
cmSystemTools::GetFilenameWithoutLastExtension(this->MainImportFile);
this->FileExt =
cmSystemTools::GetFilenameLastExtension(this->MainImportFile);
}
const std::string& cmExportFileGenerator::GetMainExportFileName() const
{
return this->MainImportFile;
}
bool cmExportFileGenerator::GenerateImportFile()
{
// Open the output file to generate it.
std::unique_ptr<cmsys::ofstream> foutPtr;
if (this->AppendMode) {
// Open for append.
auto openmodeApp = std::ios::app;
foutPtr = cm::make_unique<cmsys::ofstream>(this->MainImportFile.c_str(),
openmodeApp);
} else {
// Generate atomically and with copy-if-different.
std::unique_ptr<cmGeneratedFileStream> ap(
new cmGeneratedFileStream(this->MainImportFile, true));
ap->SetCopyIfDifferent(true);
foutPtr = std::move(ap);
}
if (!foutPtr || !*foutPtr) {
std::string se = cmSystemTools::GetLastSystemError();
std::ostringstream e;
e << "cannot write to file \"" << this->MainImportFile << "\": " << se;
cmSystemTools::Error(e.str());
return false;
}
std::ostream& os = *foutPtr;
// Start with the import file header.
this->GeneratePolicyHeaderCode(os);
this->GenerateImportHeaderCode(os);
// Create all the imported targets.
bool result = this->GenerateMainFile(os);
// End with the import file footer.
this->GenerateImportFooterCode(os);
this->GeneratePolicyFooterCode(os);
return result;
}
void cmExportFileGenerator::GenerateImportConfig(
std::ostream& os, const std::string& config,
std::vector<std::string>& missingTargets)
{
// Construct the property configuration suffix.
std::string suffix = "_";
if (!config.empty()) {
suffix += cmSystemTools::UpperCase(config);
} else {
suffix += "NOCONFIG";
}
// Generate the per-config target information.
this->GenerateImportTargetsConfig(os, config, suffix, missingTargets);
}
void cmExportFileGenerator::PopulateInterfaceProperty(
const std::string& propName, cmGeneratorTarget* target,
ImportPropertyMap& properties)
{
cmProp input = target->GetProperty(propName);
if (input) {
properties[propName] = *input;
}
}
void cmExportFileGenerator::PopulateInterfaceProperty(
const std::string& propName, const std::string& outputName,
cmGeneratorTarget* target,
cmGeneratorExpression::PreprocessContext preprocessRule,
ImportPropertyMap& properties, std::vector<std::string>& missingTargets)
{
cmProp input = target->GetProperty(propName);
if (input) {
if (input->empty()) {
// Set to empty
properties[outputName].clear();
return;
}
std::string prepro =
cmGeneratorExpression::Preprocess(*input, preprocessRule);
if (!prepro.empty()) {
this->ResolveTargetsInGeneratorExpressions(prepro, target,
missingTargets);
properties[outputName] = prepro;
}
}
}
void cmExportFileGenerator::GenerateRequiredCMakeVersion(
std::ostream& os, const char* versionString)
{
/* clang-format off */
os << "if(CMAKE_VERSION VERSION_LESS " << versionString << ")\n"
" message(FATAL_ERROR \"This file relies on consumers using "
"CMake " << versionString << " or greater.\")\n"
"endif()\n\n";
/* clang-format on */
}
bool cmExportFileGenerator::PopulateInterfaceLinkLibrariesProperty(
cmGeneratorTarget* target,
cmGeneratorExpression::PreprocessContext preprocessRule,
ImportPropertyMap& properties, std::vector<std::string>& missingTargets)
{
if (!target->IsLinkable()) {
return false;
}
cmProp input = target->GetProperty("INTERFACE_LINK_LIBRARIES");
if (input) {
std::string prepro =
cmGeneratorExpression::Preprocess(*input, preprocessRule);
if (!prepro.empty()) {
this->ResolveTargetsInGeneratorExpressions(
prepro, target, missingTargets, ReplaceFreeTargets);
properties["INTERFACE_LINK_LIBRARIES"] = prepro;
return true;
}
}
return false;
}
static bool isSubDirectory(std::string const& a, std::string const& b)
{
return (cmSystemTools::ComparePath(a, b) ||
cmSystemTools::IsSubDirectory(a, b));
}
static bool checkInterfaceDirs(const std::string& prepro,
cmGeneratorTarget* target,
const std::string& prop)
{
std::string const& installDir =
target->Makefile->GetSafeDefinition("CMAKE_INSTALL_PREFIX");
std::string const& topSourceDir =
target->GetLocalGenerator()->GetSourceDirectory();
std::string const& topBinaryDir =
target->GetLocalGenerator()->GetBinaryDirectory();
std::vector<std::string> parts;
cmGeneratorExpression::Split(prepro, parts);
const bool inSourceBuild = topSourceDir == topBinaryDir;
bool hadFatalError = false;
for (std::string const& li : parts) {
size_t genexPos = cmGeneratorExpression::Find(li);
if (genexPos == 0) {
continue;
}
if (cmHasLiteralPrefix(li, "${_IMPORT_PREFIX}")) {
continue;
}
MessageType messageType = MessageType::FATAL_ERROR;
std::ostringstream e;
if (genexPos != std::string::npos) {
if (prop == "INTERFACE_INCLUDE_DIRECTORIES") {
switch (target->GetPolicyStatusCMP0041()) {
case cmPolicies::WARN:
messageType = MessageType::WARNING;
e << cmPolicies::GetPolicyWarning(cmPolicies::CMP0041) << "\n";
break;
case cmPolicies::OLD:
continue;
case cmPolicies::REQUIRED_IF_USED:
case cmPolicies::REQUIRED_ALWAYS:
case cmPolicies::NEW:
hadFatalError = true;
break; // Issue fatal message.
}
} else {
hadFatalError = true;
}
}
if (!cmSystemTools::FileIsFullPath(li)) {
/* clang-format off */
e << "Target \"" << target->GetName() << "\" " << prop <<
" property contains relative path:\n"
" \"" << li << "\"";
/* clang-format on */
target->GetLocalGenerator()->IssueMessage(messageType, e.str());
}
bool inBinary = isSubDirectory(li, topBinaryDir);
bool inSource = isSubDirectory(li, topSourceDir);
if (isSubDirectory(li, installDir)) {
// The include directory is inside the install tree. If the
// install tree is not inside the source tree or build tree then
// fall through to the checks below that the include directory is not
// also inside the source tree or build tree.
bool shouldContinue =
(!inBinary || isSubDirectory(installDir, topBinaryDir)) &&
(!inSource || isSubDirectory(installDir, topSourceDir));
if (prop == "INTERFACE_INCLUDE_DIRECTORIES") {
if (!shouldContinue) {
switch (target->GetPolicyStatusCMP0052()) {
case cmPolicies::WARN: {
std::ostringstream s;
s << cmPolicies::GetPolicyWarning(cmPolicies::CMP0052) << "\n";
s << "Directory:\n \"" << li
<< "\"\nin "
"INTERFACE_INCLUDE_DIRECTORIES of target \""
<< target->GetName()
<< "\" is a subdirectory of the install "
"directory:\n \""
<< installDir
<< "\"\nhowever it is also "
"a subdirectory of the "
<< (inBinary ? "build" : "source") << " tree:\n \""
<< (inBinary ? topBinaryDir : topSourceDir) << "\"\n";
target->GetLocalGenerator()->IssueMessage(
MessageType::AUTHOR_WARNING, s.str());
CM_FALLTHROUGH;
}
case cmPolicies::OLD:
shouldContinue = true;
break;
case cmPolicies::REQUIRED_ALWAYS:
case cmPolicies::REQUIRED_IF_USED:
case cmPolicies::NEW:
break;
}
}
}
if (shouldContinue) {
continue;
}
}
if (inBinary) {
/* clang-format off */
e << "Target \"" << target->GetName() << "\" " << prop <<
" property contains path:\n"
" \"" << li << "\"\nwhich is prefixed in the build directory.";
/* clang-format on */
target->GetLocalGenerator()->IssueMessage(messageType, e.str());
}
if (!inSourceBuild) {
if (inSource) {
e << "Target \"" << target->GetName() << "\" " << prop
<< " property contains path:\n"
" \""
<< li << "\"\nwhich is prefixed in the source directory.";
target->GetLocalGenerator()->IssueMessage(messageType, e.str());
}
}
}
return !hadFatalError;
}
static void prefixItems(std::string& exportDirs)
{
std::vector<std::string> entries;
cmGeneratorExpression::Split(exportDirs, entries);
exportDirs.clear();
const char* sep = "";
for (std::string const& e : entries) {
exportDirs += sep;
sep = ";";
if (!cmSystemTools::FileIsFullPath(e) &&
e.find("${_IMPORT_PREFIX}") == std::string::npos) {
exportDirs += "${_IMPORT_PREFIX}/";
}
exportDirs += e;
}
}
void cmExportFileGenerator::PopulateSourcesInterface(
cmTargetExport* tei, cmGeneratorExpression::PreprocessContext preprocessRule,
ImportPropertyMap& properties, std::vector<std::string>& missingTargets)
{
cmGeneratorTarget* gt = tei->Target;
assert(preprocessRule == cmGeneratorExpression::InstallInterface);
const char* propName = "INTERFACE_SOURCES";
cmProp input = gt->GetProperty(propName);
if (!input) {
return;
}
if (input->empty()) {
properties[propName].clear();
return;
}
std::string prepro =
cmGeneratorExpression::Preprocess(*input, preprocessRule, true);
if (!prepro.empty()) {
this->ResolveTargetsInGeneratorExpressions(prepro, gt, missingTargets);
if (!checkInterfaceDirs(prepro, gt, propName)) {
return;
}
properties[propName] = prepro;
}
}
void cmExportFileGenerator::PopulateIncludeDirectoriesInterface(
cmTargetExport* tei, cmGeneratorExpression::PreprocessContext preprocessRule,
ImportPropertyMap& properties, std::vector<std::string>& missingTargets)
{
cmGeneratorTarget* target = tei->Target;
assert(preprocessRule == cmGeneratorExpression::InstallInterface);
const char* propName = "INTERFACE_INCLUDE_DIRECTORIES";
cmProp input = target->GetProperty(propName);
cmGeneratorExpression ge;
std::string dirs = cmGeneratorExpression::Preprocess(
tei->InterfaceIncludeDirectories, preprocessRule, true);
this->ReplaceInstallPrefix(dirs);
std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(dirs);
std::string exportDirs =
cge->Evaluate(target->GetLocalGenerator(), "", target);
if (cge->GetHadContextSensitiveCondition()) {
cmLocalGenerator* lg = target->GetLocalGenerator();
std::ostringstream e;
e << "Target \"" << target->GetName()
<< "\" is installed with "
"INCLUDES DESTINATION set to a context sensitive path. Paths which "
"depend on the configuration, policy values or the link interface "
"are "
"not supported. Consider using target_include_directories instead.";
lg->IssueMessage(MessageType::FATAL_ERROR, e.str());
return;
}
if (!input && exportDirs.empty()) {
return;
}
if ((input && input->empty()) && exportDirs.empty()) {
// Set to empty
properties[propName].clear();
return;
}
prefixItems(exportDirs);
std::string includes = (input ? *input : "");
const char* sep = input ? ";" : "";
includes += sep + exportDirs;
std::string prepro =
cmGeneratorExpression::Preprocess(includes, preprocessRule, true);
if (!prepro.empty()) {
this->ResolveTargetsInGeneratorExpressions(prepro, target, missingTargets);
if (!checkInterfaceDirs(prepro, target, propName)) {
return;
}
properties[propName] = prepro;
}
}
void cmExportFileGenerator::PopulateLinkDependsInterface(
cmTargetExport* tei, cmGeneratorExpression::PreprocessContext preprocessRule,
ImportPropertyMap& properties, std::vector<std::string>& missingTargets)
{
cmGeneratorTarget* gt = tei->Target;
assert(preprocessRule == cmGeneratorExpression::InstallInterface);
const char* propName = "INTERFACE_LINK_DEPENDS";
cmProp input = gt->GetProperty(propName);
if (!input) {
return;
}
if (input->empty()) {
properties[propName].clear();
return;
}
std::string prepro =
cmGeneratorExpression::Preprocess(*input, preprocessRule, true);
if (!prepro.empty()) {
this->ResolveTargetsInGeneratorExpressions(prepro, gt, missingTargets);
if (!checkInterfaceDirs(prepro, gt, propName)) {
return;
}
properties[propName] = prepro;
}
}
void cmExportFileGenerator::PopulateLinkDirectoriesInterface(
cmTargetExport* tei, cmGeneratorExpression::PreprocessContext preprocessRule,
ImportPropertyMap& properties, std::vector<std::string>& missingTargets)
{
cmGeneratorTarget* gt = tei->Target;
assert(preprocessRule == cmGeneratorExpression::InstallInterface);
const char* propName = "INTERFACE_LINK_DIRECTORIES";
cmProp input = gt->GetProperty(propName);
if (!input) {
return;
}
if (input->empty()) {
properties[propName].clear();
return;
}
std::string prepro =
cmGeneratorExpression::Preprocess(*input, preprocessRule, true);
if (!prepro.empty()) {
this->ResolveTargetsInGeneratorExpressions(prepro, gt, missingTargets);
if (!checkInterfaceDirs(prepro, gt, propName)) {
return;
}
properties[propName] = prepro;
}
}
void cmExportFileGenerator::PopulateInterfaceProperty(
const std::string& propName, cmGeneratorTarget* target,
cmGeneratorExpression::PreprocessContext preprocessRule,
ImportPropertyMap& properties, std::vector<std::string>& missingTargets)
{
this->PopulateInterfaceProperty(propName, propName, target, preprocessRule,
properties, missingTargets);
}
void getPropertyContents(cmGeneratorTarget const* tgt, const std::string& prop,
std::set<std::string>& ifaceProperties)
{
cmProp p = tgt->GetProperty(prop);
if (!p) {
return;
}
std::vector<std::string> content = cmExpandedList(*p);
ifaceProperties.insert(content.begin(), content.end());
}
void getCompatibleInterfaceProperties(cmGeneratorTarget* target,
std::set<std::string>& ifaceProperties,
const std::string& config)
{
if (target->GetType() == cmStateEnums::OBJECT_LIBRARY) {
// object libraries have no link information, so nothing to compute
return;
}
cmComputeLinkInformation* info = target->GetLinkInformation(config);
if (!info) {
cmLocalGenerator* lg = target->GetLocalGenerator();
std::ostringstream e;
e << "Exporting the target \"" << target->GetName()
<< "\" is not "
"allowed since its linker language cannot be determined";
lg->IssueMessage(MessageType::FATAL_ERROR, e.str());
return;
}
const cmComputeLinkInformation::ItemVector& deps = info->GetItems();
for (auto const& dep : deps) {
if (!dep.Target) {
continue;
}
getPropertyContents(dep.Target, "COMPATIBLE_INTERFACE_BOOL",
ifaceProperties);
getPropertyContents(dep.Target, "COMPATIBLE_INTERFACE_STRING",
ifaceProperties);
getPropertyContents(dep.Target, "COMPATIBLE_INTERFACE_NUMBER_MIN",
ifaceProperties);
getPropertyContents(dep.Target, "COMPATIBLE_INTERFACE_NUMBER_MAX",
ifaceProperties);
}
}
void cmExportFileGenerator::PopulateCompatibleInterfaceProperties(
cmGeneratorTarget* gtarget, ImportPropertyMap& properties)
{
this->PopulateInterfaceProperty("COMPATIBLE_INTERFACE_BOOL", gtarget,
properties);
this->PopulateInterfaceProperty("COMPATIBLE_INTERFACE_STRING", gtarget,
properties);
this->PopulateInterfaceProperty("COMPATIBLE_INTERFACE_NUMBER_MIN", gtarget,
properties);
this->PopulateInterfaceProperty("COMPATIBLE_INTERFACE_NUMBER_MAX", gtarget,
properties);
std::set<std::string> ifaceProperties;
getPropertyContents(gtarget, "COMPATIBLE_INTERFACE_BOOL", ifaceProperties);
getPropertyContents(gtarget, "COMPATIBLE_INTERFACE_STRING", ifaceProperties);
getPropertyContents(gtarget, "COMPATIBLE_INTERFACE_NUMBER_MIN",
ifaceProperties);
getPropertyContents(gtarget, "COMPATIBLE_INTERFACE_NUMBER_MAX",
ifaceProperties);
if (gtarget->GetType() != cmStateEnums::INTERFACE_LIBRARY) {
std::vector<std::string> configNames =
gtarget->Target->GetMakefile()->GetGeneratorConfigs(
cmMakefile::IncludeEmptyConfig);
for (std::string const& cn : configNames) {
getCompatibleInterfaceProperties(gtarget, ifaceProperties, cn);
}
}
for (std::string const& ip : ifaceProperties) {
this->PopulateInterfaceProperty("INTERFACE_" + ip, gtarget, properties);
}
}
void cmExportFileGenerator::GenerateInterfaceProperties(
const cmGeneratorTarget* target, std::ostream& os,
const ImportPropertyMap& properties)
{
if (!properties.empty()) {
std::string targetName =
cmStrCat(this->Namespace, target->GetExportName());
os << "set_target_properties(" << targetName << " PROPERTIES\n";
for (auto const& property : properties) {
os << " " << property.first << " "
<< cmExportFileGeneratorEscape(property.second) << "\n";
}
os << ")\n\n";
}
}
bool cmExportFileGenerator::AddTargetNamespace(
std::string& input, cmGeneratorTarget* target,
std::vector<std::string>& missingTargets)
{
cmGeneratorTarget::TargetOrString resolved =
target->ResolveTargetReference(input);
cmGeneratorTarget* tgt = resolved.Target;
if (!tgt) {
input = resolved.String;
return false;
}
if (tgt->IsImported()) {
input = tgt->GetName();
return true;
}
if (this->ExportedTargets.find(tgt) != this->ExportedTargets.end()) {
input = this->Namespace + tgt->GetExportName();
} else {
std::string namespacedTarget;
this->HandleMissingTarget(namespacedTarget, missingTargets, target, tgt);
if (!namespacedTarget.empty()) {
input = namespacedTarget;
} else {
input = tgt->GetName();
}
}
return true;
}
void cmExportFileGenerator::ResolveTargetsInGeneratorExpressions(
std::string& input, cmGeneratorTarget* target,
std::vector<std::string>& missingTargets, FreeTargetsReplace replace)
{
if (replace == NoReplaceFreeTargets) {
this->ResolveTargetsInGeneratorExpression(input, target, missingTargets);
return;
}
std::vector<std::string> parts;
cmGeneratorExpression::Split(input, parts);
std::string sep;
input.clear();
for (std::string& li : parts) {
if (cmHasLiteralPrefix(li, CMAKE_DIRECTORY_ID_SEP)) {
continue;
}
if (cmGeneratorExpression::Find(li) == std::string::npos) {
this->AddTargetNamespace(li, target, missingTargets);
} else {
this->ResolveTargetsInGeneratorExpression(li, target, missingTargets);
}
input += sep + li;
sep = ";";
}
}
void cmExportFileGenerator::ResolveTargetsInGeneratorExpression(
std::string& input, cmGeneratorTarget* target,
std::vector<std::string>& missingTargets)
{
std::string::size_type pos = 0;
std::string::size_type lastPos = pos;
while ((pos = input.find("$<TARGET_PROPERTY:", lastPos)) !=
std::string::npos) {
std::string::size_type nameStartPos =
pos + sizeof("$<TARGET_PROPERTY:") - 1;
std::string::size_type closePos = input.find('>', nameStartPos);
std::string::size_type commaPos = input.find(',', nameStartPos);
std::string::size_type nextOpenPos = input.find("$<", nameStartPos);
if (commaPos == std::string::npos // Implied 'this' target
|| closePos == std::string::npos // Incomplete expression.
|| closePos < commaPos // Implied 'this' target
|| nextOpenPos < commaPos) // Non-literal
{
lastPos = nameStartPos;
continue;
}
std::string targetName =
input.substr(nameStartPos, commaPos - nameStartPos);
if (this->AddTargetNamespace(targetName, target, missingTargets)) {
input.replace(nameStartPos, commaPos - nameStartPos, targetName);
}
lastPos = nameStartPos + targetName.size() + 1;
}
std::string errorString;
pos = 0;
lastPos = pos;
while ((pos = input.find("$<TARGET_NAME:", lastPos)) != std::string::npos) {
std::string::size_type nameStartPos = pos + sizeof("$<TARGET_NAME:") - 1;
std::string::size_type endPos = input.find('>', nameStartPos);
if (endPos == std::string::npos) {
errorString = "$<TARGET_NAME:...> expression incomplete";
break;
}
std::string targetName = input.substr(nameStartPos, endPos - nameStartPos);
if (targetName.find("$<") != std::string::npos) {
errorString = "$<TARGET_NAME:...> requires its parameter to be a "
"literal.";
break;
}
if (!this->AddTargetNamespace(targetName, target, missingTargets)) {
errorString = "$<TARGET_NAME:...> requires its parameter to be a "
"reachable target.";
break;
}
input.replace(pos, endPos - pos + 1, targetName);
lastPos = pos + targetName.size();
}
pos = 0;
lastPos = pos;
while (errorString.empty() &&
(pos = input.find("$<LINK_ONLY:", lastPos)) != std::string::npos) {
std::string::size_type nameStartPos = pos + sizeof("$<LINK_ONLY:") - 1;
std::string::size_type endPos = input.find('>', nameStartPos);
if (endPos == std::string::npos) {
errorString = "$<LINK_ONLY:...> expression incomplete";
break;
}
std::string libName = input.substr(nameStartPos, endPos - nameStartPos);
if (cmGeneratorExpression::IsValidTargetName(libName) &&
this->AddTargetNamespace(libName, target, missingTargets)) {
input.replace(nameStartPos, endPos - nameStartPos, libName);
}
lastPos = nameStartPos + libName.size() + 1;
}
this->ReplaceInstallPrefix(input);
if (!errorString.empty()) {
target->GetLocalGenerator()->IssueMessage(MessageType::FATAL_ERROR,
errorString);
}
}
void cmExportFileGenerator::ReplaceInstallPrefix(std::string& /*unused*/)
{
// Do nothing
}
void cmExportFileGenerator::SetImportLinkInterface(
const std::string& config, std::string const& suffix,
cmGeneratorExpression::PreprocessContext preprocessRule,
cmGeneratorTarget* target, ImportPropertyMap& properties,
std::vector<std::string>& missingTargets)
{
// Add the transitive link dependencies for this configuration.
cmLinkInterface const* iface = target->GetLinkInterface(config, target);
if (!iface) {
return;
}
if (iface->ImplementationIsInterface) {
// Policy CMP0022 must not be NEW.
this->SetImportLinkProperty(
suffix, target, "IMPORTED_LINK_INTERFACE_LIBRARIES", iface->Libraries,
properties, missingTargets, ImportLinkPropertyTargetNames::Yes);
return;
}
cmProp propContent;
if (cmProp prop_suffixed =
target->GetProperty("LINK_INTERFACE_LIBRARIES" + suffix)) {
propContent = prop_suffixed;
} else if (cmProp prop = target->GetProperty("LINK_INTERFACE_LIBRARIES")) {
propContent = prop;
} else {
return;
}
const bool newCMP0022Behavior =
target->GetPolicyStatusCMP0022() != cmPolicies::WARN &&
target->GetPolicyStatusCMP0022() != cmPolicies::OLD;
if (newCMP0022Behavior && !this->ExportOld) {
cmLocalGenerator* lg = target->GetLocalGenerator();
std::ostringstream e;
e << "Target \"" << target->GetName()
<< "\" has policy CMP0022 enabled, "
"but also has old-style LINK_INTERFACE_LIBRARIES properties "
"populated, but it was exported without the "
"EXPORT_LINK_INTERFACE_LIBRARIES to export the old-style properties";
lg->IssueMessage(MessageType::FATAL_ERROR, e.str());
return;
}
if (propContent->empty()) {
properties["IMPORTED_LINK_INTERFACE_LIBRARIES" + suffix].clear();
return;
}
std::string prepro =
cmGeneratorExpression::Preprocess(*propContent, preprocessRule);
if (!prepro.empty()) {
this->ResolveTargetsInGeneratorExpressions(prepro, target, missingTargets,
ReplaceFreeTargets);
properties["IMPORTED_LINK_INTERFACE_LIBRARIES" + suffix] = prepro;
}
}
void cmExportFileGenerator::SetImportDetailProperties(
const std::string& config, std::string const& suffix,
cmGeneratorTarget* target, ImportPropertyMap& properties,
std::vector<std::string>& missingTargets)
{
// Get the makefile in which to lookup target information.
cmMakefile* mf = target->Makefile;
// Add the soname for unix shared libraries.
if (target->GetType() == cmStateEnums::SHARED_LIBRARY ||
target->GetType() == cmStateEnums::MODULE_LIBRARY) {
if (!target->IsDLLPlatform()) {
std::string prop;
std::string value;
if (target->HasSOName(config)) {
if (mf->IsOn("CMAKE_PLATFORM_HAS_INSTALLNAME")) {
value = this->InstallNameDir(target, config);
}
prop = "IMPORTED_SONAME";
value += target->GetSOName(config);
} else {
prop = "IMPORTED_NO_SONAME";
value = "TRUE";
}
prop += suffix;
properties[prop] = value;
}
}
// Add the transitive link dependencies for this configuration.
if (cmLinkInterface const* iface =
target->GetLinkInterface(config, target)) {
this->SetImportLinkProperty(
suffix, target, "IMPORTED_LINK_INTERFACE_LANGUAGES", iface->Languages,
properties, missingTargets, ImportLinkPropertyTargetNames::No);
std::vector<std::string> dummy;
this->SetImportLinkProperty(
suffix, target, "IMPORTED_LINK_DEPENDENT_LIBRARIES", iface->SharedDeps,
properties, dummy, ImportLinkPropertyTargetNames::Yes);
if (iface->Multiplicity > 0) {
std::string prop =
cmStrCat("IMPORTED_LINK_INTERFACE_MULTIPLICITY", suffix);
properties[prop] = std::to_string(iface->Multiplicity);
}
}
// Add information if this target is a managed target
if (target->GetManagedType(config) !=
cmGeneratorTarget::ManagedType::Native) {
std::string prop = cmStrCat("IMPORTED_COMMON_LANGUAGE_RUNTIME", suffix);
std::string propval;
if (cmProp p = target->GetProperty("COMMON_LANGUAGE_RUNTIME")) {
propval = *p;
} else if (target->IsCSharpOnly()) {
// C# projects do not have the /clr flag, so we set the property
// here to mark the target as (only) managed (i.e. no .lib file
// to link to). Otherwise the COMMON_LANGUAGE_RUNTIME target
// property would have to be set manually for C# targets to make
// exporting/importing work.
propval = "CSharp";
}
properties[prop] = propval;
}
}
static std::string const& asString(std::string const& l)
{
return l;
}
static std::string const& asString(cmLinkItem const& l)
{
return l.AsStr();
}
template <typename T>
void cmExportFileGenerator::SetImportLinkProperty(
std::string const& suffix, cmGeneratorTarget* target,
const std::string& propName, std::vector<T> const& entries,
ImportPropertyMap& properties, std::vector<std::string>& missingTargets,
ImportLinkPropertyTargetNames targetNames)
{
// Skip the property if there are no entries.
if (entries.empty()) {
return;
}
// Construct the property value.
std::string link_entries;
const char* sep = "";
for (T const& l : entries) {
// Separate this from the previous entry.
link_entries += sep;
sep = ";";
if (targetNames == ImportLinkPropertyTargetNames::Yes) {
std::string temp = asString(l);
this->AddTargetNamespace(temp, target, missingTargets);
link_entries += temp;
} else {
link_entries += asString(l);
}
}
// Store the property.
std::string prop = cmStrCat(propName, suffix);
properties[prop] = link_entries;
}
void cmExportFileGenerator::GeneratePolicyHeaderCode(std::ostream& os)
{
// Protect that file against use with older CMake versions.
/* clang-format off */
os << "# Generated by CMake\n\n";
os << "if(\"${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}\" LESS 2.5)\n"
<< " message(FATAL_ERROR \"CMake >= 2.6.0 required\")\n"
<< "endif()\n";
/* clang-format on */
// Isolate the file policy level.
// Support CMake versions as far back as 2.6 but also support using NEW
// policy settings for up to CMake 3.19 (this upper limit may be reviewed
// and increased from time to time). This reduces the opportunity for CMake
// warnings when an older export file is later used with newer CMake
// versions.
/* clang-format off */
os << "cmake_policy(PUSH)\n"
<< "cmake_policy(VERSION 2.6...3.19)\n";
/* clang-format on */
}
void cmExportFileGenerator::GeneratePolicyFooterCode(std::ostream& os)
{
os << "cmake_policy(POP)\n";
}
void cmExportFileGenerator::GenerateImportHeaderCode(std::ostream& os,
const std::string& config)
{
os << "#----------------------------------------------------------------\n"
<< "# Generated CMake target import file";
if (!config.empty()) {
os << " for configuration \"" << config << "\".\n";
} else {
os << ".\n";
}
os << "#----------------------------------------------------------------\n"
<< "\n";
this->GenerateImportVersionCode(os);
}
void cmExportFileGenerator::GenerateImportFooterCode(std::ostream& os)
{
os << "# Commands beyond this point should not need to know the version.\n"
<< "set(CMAKE_IMPORT_FILE_VERSION)\n";
}
void cmExportFileGenerator::GenerateImportVersionCode(std::ostream& os)
{
// Store an import file format version. This will let us change the
// format later while still allowing old import files to work.
/* clang-format off */
os << "# Commands may need to know the format version.\n"
<< "set(CMAKE_IMPORT_FILE_VERSION 1)\n"
<< "\n";
/* clang-format on */
}
void cmExportFileGenerator::GenerateExpectedTargetsCode(
std::ostream& os, const std::string& expectedTargets)
{
/* clang-format off */
os << "# Protect against multiple inclusion, which would fail when already "
"imported targets are added once more.\n"
"set(_targetsDefined)\n"
"set(_targetsNotDefined)\n"
"set(_expectedTargets)\n"
"foreach(_expectedTarget " << expectedTargets << ")\n"
" list(APPEND _expectedTargets ${_expectedTarget})\n"
" if(NOT TARGET ${_expectedTarget})\n"
" list(APPEND _targetsNotDefined ${_expectedTarget})\n"
" endif()\n"
" if(TARGET ${_expectedTarget})\n"
" list(APPEND _targetsDefined ${_expectedTarget})\n"
" endif()\n"
"endforeach()\n"
"if(\"${_targetsDefined}\" STREQUAL \"${_expectedTargets}\")\n"
" unset(_targetsDefined)\n"
" unset(_targetsNotDefined)\n"
" unset(_expectedTargets)\n"
" set(CMAKE_IMPORT_FILE_VERSION)\n"
" cmake_policy(POP)\n"
" return()\n"
"endif()\n"
"if(NOT \"${_targetsDefined}\" STREQUAL \"\")\n"
" message(FATAL_ERROR \"Some (but not all) targets in this export "
"set were already defined.\\nTargets Defined: ${_targetsDefined}\\n"
"Targets not yet defined: ${_targetsNotDefined}\\n\")\n"
"endif()\n"
"unset(_targetsDefined)\n"
"unset(_targetsNotDefined)\n"
"unset(_expectedTargets)\n"
"\n\n";
/* clang-format on */
}
void cmExportFileGenerator::GenerateImportTargetCode(
std::ostream& os, cmGeneratorTarget const* target,
cmStateEnums::TargetType targetType)
{
// Construct the imported target name.
std::string targetName = this->Namespace;
targetName += target->GetExportName();
// Create the imported target.
os << "# Create imported target " << targetName << "\n";
switch (targetType) {
case cmStateEnums::EXECUTABLE:
os << "add_executable(" << targetName << " IMPORTED)\n";
break;
case cmStateEnums::STATIC_LIBRARY:
os << "add_library(" << targetName << " STATIC IMPORTED)\n";
break;
case cmStateEnums::SHARED_LIBRARY:
os << "add_library(" << targetName << " SHARED IMPORTED)\n";
break;
case cmStateEnums::MODULE_LIBRARY:
os << "add_library(" << targetName << " MODULE IMPORTED)\n";
break;
case cmStateEnums::UNKNOWN_LIBRARY:
os << "add_library(" << targetName << " UNKNOWN IMPORTED)\n";
break;
case cmStateEnums::OBJECT_LIBRARY:
os << "add_library(" << targetName << " OBJECT IMPORTED)\n";
break;
case cmStateEnums::INTERFACE_LIBRARY:
os << "add_library(" << targetName << " INTERFACE IMPORTED)\n";
break;
default: // should never happen
break;
}
// Mark the imported executable if it has exports.
if (target->IsExecutableWithExports()) {
os << "set_property(TARGET " << targetName
<< " PROPERTY ENABLE_EXPORTS 1)\n";
}
// Mark the imported library if it is a framework.
if (target->IsFrameworkOnApple()) {
os << "set_property(TARGET " << targetName << " PROPERTY FRAMEWORK 1)\n";
}
// Mark the imported executable if it is an application bundle.
if (target->IsAppBundleOnApple()) {
os << "set_property(TARGET " << targetName
<< " PROPERTY MACOSX_BUNDLE 1)\n";
}
if (target->IsCFBundleOnApple()) {
os << "set_property(TARGET " << targetName << " PROPERTY BUNDLE 1)\n";
}
// generate DEPRECATION
if (target->IsDeprecated()) {
os << "set_property(TARGET " << targetName << " PROPERTY DEPRECATION "
<< cmExportFileGeneratorEscape(target->GetDeprecation()) << ")\n";
}
os << "\n";
}
void cmExportFileGenerator::GenerateImportPropertyCode(
std::ostream& os, const std::string& config, cmGeneratorTarget const* target,
ImportPropertyMap const& properties)
{
// Construct the imported target name.
std::string targetName = this->Namespace;
targetName += target->GetExportName();
// Set the import properties.
os << "# Import target \"" << targetName << "\" for configuration \""
<< config << "\"\n";
os << "set_property(TARGET " << targetName
<< " APPEND PROPERTY IMPORTED_CONFIGURATIONS ";
if (!config.empty()) {
os << cmSystemTools::UpperCase(config);
} else {
os << "NOCONFIG";
}
os << ")\n";
os << "set_target_properties(" << targetName << " PROPERTIES\n";
for (auto const& property : properties) {
os << " " << property.first << " "
<< cmExportFileGeneratorEscape(property.second) << "\n";
}
os << " )\n"
<< "\n";
}
void cmExportFileGenerator::GenerateMissingTargetsCheckCode(
std::ostream& os, const std::vector<std::string>& missingTargets)
{
if (missingTargets.empty()) {
/* clang-format off */
os << "# This file does not depend on other imported targets which have\n"
"# been exported from the same project but in a separate "
"export set.\n\n";
/* clang-format on */
return;
}
/* clang-format off */
os << "# Make sure the targets which have been exported in some other\n"
"# export set exist.\n"
"unset(${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE_targets)\n"
"foreach(_target ";
/* clang-format on */
std::set<std::string> emitted;
for (std::string const& missingTarget : missingTargets) {
if (emitted.insert(missingTarget).second) {
os << "\"" << missingTarget << "\" ";
}
}
/* clang-format off */
os << ")\n"
" if(NOT TARGET \"${_target}\" )\n"
" set(${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE_targets \""
"${${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE_targets} ${_target}\")"
"\n"
" endif()\n"
"endforeach()\n"
"\n"
"if(DEFINED ${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE_targets)\n"
" if(CMAKE_FIND_PACKAGE_NAME)\n"
" set( ${CMAKE_FIND_PACKAGE_NAME}_FOUND FALSE)\n"
" set( ${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE "
"\"The following imported targets are "
"referenced, but are missing: "
"${${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE_targets}\")\n"
" else()\n"
" message(FATAL_ERROR \"The following imported targets are "
"referenced, but are missing: "
"${${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE_targets}\")\n"
" endif()\n"
"endif()\n"
"unset(${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE_targets)\n"
"\n";
/* clang-format on */
}
void cmExportFileGenerator::GenerateImportedFileCheckLoop(std::ostream& os)
{
// Add code which verifies at cmake time that the file which is being
// imported actually exists on disk. This should in theory always be theory
// case, but still when packages are split into normal and development
// packages this might get broken (e.g. the Config.cmake could be part of
// the non-development package, something similar happened to me without
// on SUSE with a mysql pkg-config file, which claimed everything is fine,
// but the development package was not installed.).
/* clang-format off */
os << "# Loop over all imported files and verify that they actually exist\n"
"foreach(target ${_IMPORT_CHECK_TARGETS} )\n"
" foreach(file ${_IMPORT_CHECK_FILES_FOR_${target}} )\n"
" if(NOT EXISTS \"${file}\" )\n"
" message(FATAL_ERROR \"The imported target \\\"${target}\\\""
" references the file\n"
" \\\"${file}\\\"\n"
"but this file does not exist. Possible reasons include:\n"
"* The file was deleted, renamed, or moved to another location.\n"
"* An install or uninstall procedure did not complete successfully.\n"
"* The installation package was faulty and contained\n"
" \\\"${CMAKE_CURRENT_LIST_FILE}\\\"\n"
"but not all the files it references.\n"
"\")\n"
" endif()\n"
" endforeach()\n"
" unset(_IMPORT_CHECK_FILES_FOR_${target})\n"
"endforeach()\n"
"unset(_IMPORT_CHECK_TARGETS)\n"
"\n";
/* clang-format on */
}
void cmExportFileGenerator::GenerateImportedFileChecksCode(
std::ostream& os, cmGeneratorTarget* target,
ImportPropertyMap const& properties,
const std::set<std::string>& importedLocations)
{
// Construct the imported target name.
std::string targetName = cmStrCat(this->Namespace, target->GetExportName());
os << "list(APPEND _IMPORT_CHECK_TARGETS " << targetName
<< " )\n"
"list(APPEND _IMPORT_CHECK_FILES_FOR_"
<< targetName << " ";
for (std::string const& li : importedLocations) {
auto pi = properties.find(li);
if (pi != properties.end()) {
os << cmExportFileGeneratorEscape(pi->second) << " ";
}
}
os << ")\n\n";
}
bool cmExportFileGenerator::PopulateExportProperties(
cmGeneratorTarget* gte, ImportPropertyMap& properties,
std::string& errorMessage)
{
const auto& targetProperties = gte->Target->GetProperties();
if (cmProp exportProperties =
targetProperties.GetPropertyValue("EXPORT_PROPERTIES")) {
for (auto& prop : cmExpandedList(*exportProperties)) {
/* Black list reserved properties */
if (cmHasLiteralPrefix(prop, "IMPORTED_") ||
cmHasLiteralPrefix(prop, "INTERFACE_")) {
std::ostringstream e;
e << "Target \"" << gte->Target->GetName() << "\" contains property \""
<< prop << "\" in EXPORT_PROPERTIES but IMPORTED_* and INTERFACE_* "
<< "properties are reserved.";
errorMessage = e.str();
return false;
}
cmProp propertyValue = targetProperties.GetPropertyValue(prop);
if (!propertyValue) {
// Asked to export a property that isn't defined on the target. Do not
// consider this an error, there's just nothing to export.
continue;
}
std::string evaluatedValue = cmGeneratorExpression::Preprocess(
*propertyValue, cmGeneratorExpression::StripAllGeneratorExpressions);
if (evaluatedValue != *propertyValue) {
std::ostringstream e;
e << "Target \"" << gte->Target->GetName() << "\" contains property \""
<< prop << "\" in EXPORT_PROPERTIES but this property contains a "
<< "generator expression. This is not allowed.";
errorMessage = e.str();
return false;
}
properties[prop] = *propertyValue;
}
}
return true;
}
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