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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 "cmFindBase.h"
#include <algorithm>
#include <cstddef>
#include <deque>
#include <functional>
#include <iterator>
#include <map>
#include <utility>
#include <cm/optional>
#include <cmext/algorithm>
#include <cmext/string_view>
#include "cmCMakePath.h"
#include "cmExecutionStatus.h"
#include "cmList.h"
#include "cmListFileCache.h"
#include "cmMakefile.h"
#include "cmMessageType.h"
#include "cmPolicies.h"
#include "cmRange.h"
#include "cmSearchPath.h"
#include "cmState.h"
#include "cmStateTypes.h"
#include "cmStringAlgorithms.h"
#include "cmSystemTools.h"
#include "cmValue.h"
#include "cmWindowsRegistry.h"
#include "cmake.h"
cmFindBase::cmFindBase(std::string findCommandName, cmExecutionStatus& status)
: cmFindCommon(status)
, FindCommandName(std::move(findCommandName))
{
}
bool cmFindBase::ParseArguments(std::vector<std::string> const& argsIn)
{
if (argsIn.size() < 2) {
this->SetError("called with incorrect number of arguments");
return false;
}
// copy argsIn into args so it can be modified,
// in the process extract the DOC "documentation"
// and handle options NO_CACHE and ENV
size_t size = argsIn.size();
std::vector<std::string> args;
bool foundDoc = false;
for (unsigned int j = 0; j < size; ++j) {
if (foundDoc || argsIn[j] != "DOC") {
if (argsIn[j] == "NO_CACHE") {
this->StoreResultInCache = false;
} else if (argsIn[j] == "ENV") {
if (j + 1 < size) {
j++;
cmSystemTools::GetPath(args, argsIn[j].c_str());
}
} else {
args.push_back(argsIn[j]);
}
} else {
if (j + 1 < size) {
foundDoc = true;
this->VariableDocumentation = argsIn[j + 1];
j++;
if (j >= size) {
break;
}
}
}
}
if (args.size() < 2) {
this->SetError("called with incorrect number of arguments");
return false;
}
this->VariableName = args[0];
if (this->CheckForVariableDefined()) {
this->AlreadyDefined = true;
return true;
}
// Find what search path locations have been enabled/disable
this->SelectDefaultSearchModes();
// Find the current root path mode.
this->SelectDefaultRootPathMode();
// Find the current bundle/framework search policy.
this->SelectDefaultMacMode();
bool newStyle = false;
enum Doing
{
DoingNone,
DoingNames,
DoingPaths,
DoingPathSuffixes,
DoingHints
};
Doing doing = DoingNames; // assume it starts with a name
for (unsigned int j = 1; j < args.size(); ++j) {
if (args[j] == "NAMES") {
doing = DoingNames;
newStyle = true;
} else if (args[j] == "PATHS") {
doing = DoingPaths;
newStyle = true;
} else if (args[j] == "HINTS") {
doing = DoingHints;
newStyle = true;
} else if (args[j] == "PATH_SUFFIXES") {
doing = DoingPathSuffixes;
newStyle = true;
} else if (args[j] == "NAMES_PER_DIR") {
doing = DoingNone;
if (this->NamesPerDirAllowed) {
this->NamesPerDir = true;
} else {
this->SetError("does not support NAMES_PER_DIR");
return false;
}
} else if (args[j] == "NO_SYSTEM_PATH") {
doing = DoingNone;
this->NoDefaultPath = true;
} else if (args[j] == "REQUIRED") {
doing = DoingNone;
this->Required = true;
newStyle = true;
} else if (args[j] == "REGISTRY_VIEW") {
if (++j == args.size()) {
this->SetError("missing required argument for \"REGISTRY_VIEW\"");
return false;
}
auto view = cmWindowsRegistry::ToView(args[j]);
if (view) {
this->RegistryView = *view;
} else {
this->SetError(
cmStrCat("given invalid value for \"REGISTRY_VIEW\": ", args[j]));
return false;
}
} else if (args[j] == "VALIDATOR") {
if (++j == args.size()) {
this->SetError("missing required argument for \"VALIDATOR\"");
return false;
}
auto command = this->Makefile->GetState()->GetCommand(args[j]);
if (command == nullptr) {
this->SetError(cmStrCat(
"command specified for \"VALIDATOR\" is undefined: ", args[j], '.'));
return false;
}
// ensure a macro is not specified as validator
const auto& validatorName = args[j];
cmList macros{ this->Makefile->GetProperty("MACROS") };
if (std::find_if(macros.begin(), macros.end(),
[&validatorName](const std::string& item) {
return cmSystemTools::Strucmp(validatorName.c_str(),
item.c_str()) == 0;
}) != macros.end()) {
this->SetError(cmStrCat(
"command specified for \"VALIDATOR\" is not a function: ", args[j],
'.'));
return false;
}
this->ValidatorName = args[j];
} else if (this->CheckCommonArgument(args[j])) {
doing = DoingNone;
} else {
// Some common arguments were accidentally supported by CMake
// 2.4 and 2.6.0 in the short-hand form of the command, so we
// must support it even though it is not documented.
if (doing == DoingNames) {
this->Names.push_back(args[j]);
} else if (doing == DoingPaths) {
this->UserGuessArgs.push_back(args[j]);
} else if (doing == DoingHints) {
this->UserHintsArgs.push_back(args[j]);
} else if (doing == DoingPathSuffixes) {
this->AddPathSuffix(args[j]);
}
}
}
if (this->VariableDocumentation.empty()) {
this->VariableDocumentation = "Where can ";
if (this->Names.empty()) {
this->VariableDocumentation += "the (unknown) library be found";
} else if (this->Names.size() == 1) {
this->VariableDocumentation +=
"the " + this->Names.front() + " library be found";
} else {
this->VariableDocumentation += "one of the ";
this->VariableDocumentation +=
cmJoin(cmMakeRange(this->Names).retreat(1), ", ");
this->VariableDocumentation +=
" or " + this->Names.back() + " libraries be found";
}
}
// look for old style
// FIND_*(VAR name path1 path2 ...)
if (!newStyle && !this->Names.empty()) {
// All the short-hand arguments have been recorded as names.
std::vector<std::string> shortArgs = this->Names;
this->Names.clear(); // clear out any values in Names
this->Names.push_back(shortArgs[0]);
cm::append(this->UserGuessArgs, shortArgs.begin() + 1, shortArgs.end());
}
this->ExpandPaths();
this->ComputeFinalPaths(IgnorePaths::Yes);
return true;
}
bool cmFindBase::Validate(const std::string& path) const
{
if (this->ValidatorName.empty()) {
return true;
}
// The validator command will be executed in an isolated scope.
cmMakefile::ScopePushPop varScope(this->Makefile);
cmMakefile::PolicyPushPop polScope(this->Makefile);
static_cast<void>(varScope);
static_cast<void>(polScope);
auto resultName =
cmStrCat("CMAKE_"_s, cmSystemTools::UpperCase(this->FindCommandName),
"_VALIDATOR_STATUS"_s);
this->Makefile->AddDefinitionBool(resultName, true);
cmListFileFunction validator(
this->ValidatorName, 0, 0,
{ cmListFileArgument(resultName, cmListFileArgument::Unquoted, 0),
cmListFileArgument(path, cmListFileArgument::Quoted, 0) });
cmExecutionStatus status(*this->Makefile);
if (this->Makefile->ExecuteCommand(validator, status)) {
return this->Makefile->GetDefinition(resultName).IsOn();
}
return false;
}
void cmFindBase::ExpandPaths()
{
if (!this->NoDefaultPath) {
if (!this->NoPackageRootPath) {
this->FillPackageRootPath();
}
if (!this->NoCMakePath) {
this->FillCMakeVariablePath();
}
if (!this->NoCMakeEnvironmentPath) {
this->FillCMakeEnvironmentPath();
}
}
this->FillUserHintsPath();
if (!this->NoDefaultPath) {
if (!this->NoSystemEnvironmentPath) {
this->FillSystemEnvironmentPath();
}
if (!this->NoCMakeSystemPath) {
this->FillCMakeSystemVariablePath();
}
}
this->FillUserGuessPath();
}
void cmFindBase::FillCMakeEnvironmentPath()
{
cmSearchPath& paths = this->LabeledPaths[PathLabel::CMakeEnvironment];
// Add CMAKE_*_PATH environment variables
std::string var = cmStrCat("CMAKE_", this->CMakePathName, "_PATH");
paths.AddEnvPrefixPath("CMAKE_PREFIX_PATH");
paths.AddEnvPath(var);
if (this->CMakePathName == "PROGRAM") {
paths.AddEnvPath("CMAKE_APPBUNDLE_PATH");
} else {
paths.AddEnvPath("CMAKE_FRAMEWORK_PATH");
}
paths.AddSuffixes(this->SearchPathSuffixes);
}
void cmFindBase::FillPackageRootPath()
{
cmSearchPath& paths = this->LabeledPaths[PathLabel::PackageRoot];
// Add the PACKAGE_ROOT_PATH from each enclosing find_package call.
for (std::vector<std::string> const& pkgPaths :
cmReverseRange(this->Makefile->FindPackageRootPathStack)) {
paths.AddPrefixPaths(pkgPaths);
}
paths.AddSuffixes(this->SearchPathSuffixes);
}
void cmFindBase::FillCMakeVariablePath()
{
cmSearchPath& paths = this->LabeledPaths[PathLabel::CMake];
// Add CMake variables of the same name as the previous environment
// variables CMAKE_*_PATH to be used most of the time with -D
// command line options
std::string var = cmStrCat("CMAKE_", this->CMakePathName, "_PATH");
paths.AddCMakePrefixPath("CMAKE_PREFIX_PATH");
paths.AddCMakePath(var);
if (this->CMakePathName == "PROGRAM") {
paths.AddCMakePath("CMAKE_APPBUNDLE_PATH");
} else {
paths.AddCMakePath("CMAKE_FRAMEWORK_PATH");
}
paths.AddSuffixes(this->SearchPathSuffixes);
}
void cmFindBase::FillSystemEnvironmentPath()
{
cmSearchPath& paths = this->LabeledPaths[PathLabel::SystemEnvironment];
// Add LIB or INCLUDE
if (!this->EnvironmentPath.empty()) {
paths.AddEnvPath(this->EnvironmentPath);
}
// Add PATH
paths.AddEnvPath("PATH");
paths.AddSuffixes(this->SearchPathSuffixes);
}
namespace {
struct entry_to_remove
{
entry_to_remove(std::string const& name, cmMakefile* makefile)
: value()
{
if (cmValue to_skip = makefile->GetDefinition(
cmStrCat("_CMAKE_SYSTEM_PREFIX_PATH_", name, "_PREFIX_COUNT"))) {
cmStrToLong(*to_skip, &count);
}
if (cmValue prefix_value = makefile->GetDefinition(
cmStrCat("_CMAKE_SYSTEM_PREFIX_PATH_", name, "_PREFIX_VALUE"))) {
value = *prefix_value;
}
}
bool valid() const { return count > 0 && !value.empty(); }
void remove_self(std::vector<std::string>& entries) const
{
if (this->valid()) {
long to_skip = this->count;
long index_to_remove = 0;
for (const auto& path : entries) {
if (path == this->value && --to_skip == 0) {
break;
}
++index_to_remove;
}
entries.erase(entries.begin() + index_to_remove);
}
}
long count = -1;
std::string value;
};
}
void cmFindBase::FillCMakeSystemVariablePath()
{
cmSearchPath& paths = this->LabeledPaths[PathLabel::CMakeSystem];
const bool install_prefix_in_list =
!this->Makefile->IsOn("CMAKE_FIND_NO_INSTALL_PREFIX");
const bool remove_install_prefix = this->NoCMakeInstallPath;
const bool add_install_prefix = !this->NoCMakeInstallPath &&
this->Makefile->IsDefinitionSet("CMAKE_FIND_USE_INSTALL_PREFIX");
// We have 3 possible states for `CMAKE_SYSTEM_PREFIX_PATH` and
// `CMAKE_INSTALL_PREFIX`.
// Either we need to remove `CMAKE_INSTALL_PREFIX`, add
// `CMAKE_INSTALL_PREFIX`, or do nothing.
//
// When we need to remove `CMAKE_INSTALL_PREFIX` we remove the Nth occurrence
// of `CMAKE_INSTALL_PREFIX` from `CMAKE_SYSTEM_PREFIX_PATH`, where `N` is
// computed by `CMakeSystemSpecificInformation.cmake` while constructing
// `CMAKE_SYSTEM_PREFIX_PATH`. This ensures that if projects / toolchains
// have removed `CMAKE_INSTALL_PREFIX` from the list, we don't remove
// some other entry by mistake ( likewise for `CMAKE_STAGING_PREFIX` )
entry_to_remove install_entry("INSTALL", this->Makefile);
entry_to_remove staging_entry("STAGING", this->Makefile);
if (remove_install_prefix && install_prefix_in_list &&
(install_entry.valid() || staging_entry.valid())) {
cmValue prefix_paths =
this->Makefile->GetDefinition("CMAKE_SYSTEM_PREFIX_PATH");
// remove entries from CMAKE_SYSTEM_PREFIX_PATH
cmList expanded{ *prefix_paths };
install_entry.remove_self(expanded);
staging_entry.remove_self(expanded);
paths.AddPrefixPaths(expanded,
this->Makefile->GetCurrentSourceDirectory().c_str());
} else if (add_install_prefix && !install_prefix_in_list) {
paths.AddCMakePrefixPath("CMAKE_INSTALL_PREFIX");
paths.AddCMakePrefixPath("CMAKE_STAGING_PREFIX");
paths.AddCMakePrefixPath("CMAKE_SYSTEM_PREFIX_PATH");
} else {
// Otherwise the current setup of `CMAKE_SYSTEM_PREFIX_PATH` is correct
paths.AddCMakePrefixPath("CMAKE_SYSTEM_PREFIX_PATH");
}
std::string var = cmStrCat("CMAKE_SYSTEM_", this->CMakePathName, "_PATH");
paths.AddCMakePath(var);
if (this->CMakePathName == "PROGRAM") {
paths.AddCMakePath("CMAKE_SYSTEM_APPBUNDLE_PATH");
} else {
paths.AddCMakePath("CMAKE_SYSTEM_FRAMEWORK_PATH");
}
paths.AddSuffixes(this->SearchPathSuffixes);
}
void cmFindBase::FillUserHintsPath()
{
cmSearchPath& paths = this->LabeledPaths[PathLabel::Hints];
for (std::string const& p : this->UserHintsArgs) {
paths.AddUserPath(p);
}
paths.AddSuffixes(this->SearchPathSuffixes);
}
void cmFindBase::FillUserGuessPath()
{
cmSearchPath& paths = this->LabeledPaths[PathLabel::Guess];
for (std::string const& p : this->UserGuessArgs) {
paths.AddUserPath(p);
}
paths.AddSuffixes(this->SearchPathSuffixes);
}
bool cmFindBase::CheckForVariableDefined()
{
if (cmValue value = this->Makefile->GetDefinition(this->VariableName)) {
cmState* state = this->Makefile->GetState();
cmValue cacheEntry = state->GetCacheEntryValue(this->VariableName);
bool found = !cmIsNOTFOUND(*value);
bool cached = cacheEntry != nullptr;
auto cacheType = cached ? state->GetCacheEntryType(this->VariableName)
: cmStateEnums::UNINITIALIZED;
if (cached && cacheType != cmStateEnums::UNINITIALIZED) {
this->VariableType = cacheType;
if (const auto& hs =
state->GetCacheEntryProperty(this->VariableName, "HELPSTRING")) {
this->VariableDocumentation = *hs;
}
}
if (found) {
// If the user specifies the entry on the command line without a
// type we should add the type and docstring but keep the
// original value. Tell the subclass implementations to do
// this.
if (cached && cacheType == cmStateEnums::UNINITIALIZED) {
this->AlreadyInCacheWithoutMetaInfo = true;
}
return true;
}
}
return false;
}
void cmFindBase::NormalizeFindResult()
{
if (this->Makefile->GetPolicyStatus(cmPolicies::CMP0125) ==
cmPolicies::NEW) {
// ensure the path returned by find_* command is absolute
const auto& existingValue =
this->Makefile->GetDefinition(this->VariableName);
std::string value;
if (!existingValue->empty()) {
value =
cmCMakePath(*existingValue, cmCMakePath::auto_format)
.Absolute(cmCMakePath(
this->Makefile->GetCMakeInstance()->GetCMakeWorkingDirectory()))
.Normal()
.GenericString();
// value = cmSystemTools::CollapseFullPath(*existingValue);
if (!cmSystemTools::FileExists(value, false)) {
value = *existingValue;
}
}
if (this->StoreResultInCache) {
// If the user specifies the entry on the command line without a
// type we should add the type and docstring but keep the original
// value.
if (value != *existingValue || this->AlreadyInCacheWithoutMetaInfo) {
this->Makefile->GetCMakeInstance()->AddCacheEntry(
this->VariableName, value, this->VariableDocumentation,
this->VariableType);
if (this->Makefile->GetPolicyStatus(cmPolicies::CMP0126) ==
cmPolicies::NEW) {
if (this->Makefile->IsNormalDefinitionSet(this->VariableName)) {
this->Makefile->AddDefinition(this->VariableName, value);
}
} else {
// if there was a definition then remove it
// This is required to ensure same behavior as
// cmMakefile::AddCacheDefinition.
this->Makefile->RemoveDefinition(this->VariableName);
}
}
} else {
// ensure a normal variable is defined.
this->Makefile->AddDefinition(this->VariableName, value);
}
} else {
// If the user specifies the entry on the command line without a
// type we should add the type and docstring but keep the original
// value.
if (this->StoreResultInCache) {
if (this->AlreadyInCacheWithoutMetaInfo) {
this->Makefile->AddCacheDefinition(this->VariableName, "",
this->VariableDocumentation,
this->VariableType);
if (this->Makefile->GetPolicyStatus(cmPolicies::CMP0126) ==
cmPolicies::NEW &&
this->Makefile->IsNormalDefinitionSet(this->VariableName)) {
this->Makefile->AddDefinition(
this->VariableName,
*this->Makefile->GetCMakeInstance()->GetCacheDefinition(
this->VariableName));
}
}
} else {
// ensure a normal variable is defined.
this->Makefile->AddDefinition(
this->VariableName,
this->Makefile->GetSafeDefinition(this->VariableName));
}
}
}
void cmFindBase::StoreFindResult(const std::string& value)
{
bool force =
this->Makefile->GetPolicyStatus(cmPolicies::CMP0125) == cmPolicies::NEW;
bool updateNormalVariable =
this->Makefile->GetPolicyStatus(cmPolicies::CMP0126) == cmPolicies::NEW;
if (!value.empty()) {
if (this->StoreResultInCache) {
this->Makefile->AddCacheDefinition(this->VariableName, value,
this->VariableDocumentation,
this->VariableType, force);
if (updateNormalVariable &&
this->Makefile->IsNormalDefinitionSet(this->VariableName)) {
this->Makefile->AddDefinition(this->VariableName, value);
}
} else {
this->Makefile->AddDefinition(this->VariableName, value);
}
return;
}
auto notFound = cmStrCat(this->VariableName, "-NOTFOUND");
if (this->StoreResultInCache) {
this->Makefile->AddCacheDefinition(this->VariableName, notFound,
this->VariableDocumentation,
this->VariableType, force);
if (updateNormalVariable &&
this->Makefile->IsNormalDefinitionSet(this->VariableName)) {
this->Makefile->AddDefinition(this->VariableName, notFound);
}
} else {
this->Makefile->AddDefinition(this->VariableName, notFound);
}
if (this->Required) {
this->Makefile->IssueMessage(
MessageType::FATAL_ERROR,
cmStrCat("Could not find ", this->VariableName, " using the following ",
(this->FindCommandName == "find_file" ||
this->FindCommandName == "find_path"
? "files"
: "names"),
": ", cmJoin(this->Names, ", ")));
cmSystemTools::SetFatalErrorOccurred();
}
}
cmFindBaseDebugState::cmFindBaseDebugState(std::string commandName,
cmFindBase const* findBase)
: FindCommand(findBase)
, CommandName(std::move(commandName))
{
}
cmFindBaseDebugState::~cmFindBaseDebugState()
{
if (this->FindCommand->DebugMode) {
std::string buffer =
cmStrCat(this->CommandName, " called with the following settings:\n");
buffer += cmStrCat(" VAR: ", this->FindCommand->VariableName, "\n");
buffer += cmStrCat(
" NAMES: ", cmWrap("\"", this->FindCommand->Names, "\"", "\n "),
"\n");
buffer += cmStrCat(
" Documentation: ", this->FindCommand->VariableDocumentation, "\n");
buffer += " Framework\n";
buffer += cmStrCat(" Only Search Frameworks: ",
this->FindCommand->SearchFrameworkOnly, "\n");
buffer += cmStrCat(" Search Frameworks Last: ",
this->FindCommand->SearchFrameworkLast, "\n");
buffer += cmStrCat(" Search Frameworks First: ",
this->FindCommand->SearchFrameworkFirst, "\n");
buffer += " AppBundle\n";
buffer += cmStrCat(" Only Search AppBundle: ",
this->FindCommand->SearchAppBundleOnly, "\n");
buffer += cmStrCat(" Search AppBundle Last: ",
this->FindCommand->SearchAppBundleLast, "\n");
buffer += cmStrCat(" Search AppBundle First: ",
this->FindCommand->SearchAppBundleFirst, "\n");
if (this->FindCommand->NoDefaultPath) {
buffer += " NO_DEFAULT_PATH Enabled\n";
} else {
buffer += cmStrCat(
" CMAKE_FIND_USE_CMAKE_PATH: ", !this->FindCommand->NoCMakePath, "\n",
" CMAKE_FIND_USE_CMAKE_ENVIRONMENT_PATH: ",
!this->FindCommand->NoCMakeEnvironmentPath, "\n",
" CMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH: ",
!this->FindCommand->NoSystemEnvironmentPath, "\n",
" CMAKE_FIND_USE_CMAKE_SYSTEM_PATH: ",
!this->FindCommand->NoCMakeSystemPath, "\n",
" CMAKE_FIND_USE_INSTALL_PREFIX: ",
!this->FindCommand->NoCMakeInstallPath, "\n");
}
buffer +=
cmStrCat(this->CommandName, " considered the following locations:\n");
for (auto const& state : this->FailedSearchLocations) {
std::string path = cmStrCat(" ", state.path);
if (!state.regexName.empty()) {
path = cmStrCat(path, "/", state.regexName);
}
buffer += cmStrCat(path, "\n");
}
if (!this->FoundSearchLocation.path.empty()) {
buffer += cmStrCat("The item was found at\n ",
this->FoundSearchLocation.path, "\n");
} else {
buffer += "The item was not found.\n";
}
this->FindCommand->DebugMessage(buffer);
}
}
void cmFindBaseDebugState::FoundAt(std::string const& path,
std::string regexName)
{
if (this->FindCommand->DebugMode) {
this->FoundSearchLocation = DebugLibState{ std::move(regexName), path };
}
}
void cmFindBaseDebugState::FailedAt(std::string const& path,
std::string regexName)
{
if (this->FindCommand->DebugMode) {
this->FailedSearchLocations.emplace_back(std::move(regexName), path);
}
}