https://github.com/Kitware/CMake
Tip revision: 166bf4c490b8f46eca057fc23c3f3c2e042e9cb3 authored by Brad King on 13 December 2017, 13:34:28 UTC
CMake 3.10.1
CMake 3.10.1
Tip revision: 166bf4c
cmAddLibraryCommand.cxx
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmAddLibraryCommand.h"
#include <sstream>
#include "cmGeneratorExpression.h"
#include "cmGlobalGenerator.h"
#include "cmMakefile.h"
#include "cmPolicies.h"
#include "cmState.h"
#include "cmStateTypes.h"
#include "cmSystemTools.h"
#include "cmTarget.h"
#include "cmake.h"
class cmExecutionStatus;
// cmLibraryCommand
bool cmAddLibraryCommand::InitialPass(std::vector<std::string> const& args,
cmExecutionStatus&)
{
if (args.empty()) {
this->SetError("called with incorrect number of arguments");
return false;
}
// Library type defaults to value of BUILD_SHARED_LIBS, if it exists,
// otherwise it defaults to static library.
cmStateEnums::TargetType type = cmStateEnums::SHARED_LIBRARY;
if (cmSystemTools::IsOff(
this->Makefile->GetDefinition("BUILD_SHARED_LIBS"))) {
type = cmStateEnums::STATIC_LIBRARY;
}
bool excludeFromAll = false;
bool importTarget = false;
bool importGlobal = false;
std::vector<std::string>::const_iterator s = args.begin();
std::string const& libName = *s;
++s;
// If the second argument is "SHARED" or "STATIC", then it controls
// the type of library. Otherwise, it is treated as a source or
// source list name. There may be two keyword arguments, check for them
bool haveSpecifiedType = false;
bool isAlias = false;
while (s != args.end()) {
std::string libType = *s;
if (libType == "STATIC") {
if (type == cmStateEnums::INTERFACE_LIBRARY) {
std::ostringstream e;
e << "INTERFACE library specified with conflicting STATIC type.";
this->SetError(e.str());
return false;
}
++s;
type = cmStateEnums::STATIC_LIBRARY;
haveSpecifiedType = true;
} else if (libType == "SHARED") {
if (type == cmStateEnums::INTERFACE_LIBRARY) {
std::ostringstream e;
e << "INTERFACE library specified with conflicting SHARED type.";
this->SetError(e.str());
return false;
}
++s;
type = cmStateEnums::SHARED_LIBRARY;
haveSpecifiedType = true;
} else if (libType == "MODULE") {
if (type == cmStateEnums::INTERFACE_LIBRARY) {
std::ostringstream e;
e << "INTERFACE library specified with conflicting MODULE type.";
this->SetError(e.str());
return false;
}
++s;
type = cmStateEnums::MODULE_LIBRARY;
haveSpecifiedType = true;
} else if (libType == "OBJECT") {
if (type == cmStateEnums::INTERFACE_LIBRARY) {
std::ostringstream e;
e << "INTERFACE library specified with conflicting OBJECT type.";
this->SetError(e.str());
return false;
}
++s;
type = cmStateEnums::OBJECT_LIBRARY;
haveSpecifiedType = true;
} else if (libType == "UNKNOWN") {
if (type == cmStateEnums::INTERFACE_LIBRARY) {
std::ostringstream e;
e << "INTERFACE library specified with conflicting UNKNOWN type.";
this->SetError(e.str());
return false;
}
++s;
type = cmStateEnums::UNKNOWN_LIBRARY;
haveSpecifiedType = true;
} else if (libType == "ALIAS") {
if (type == cmStateEnums::INTERFACE_LIBRARY) {
std::ostringstream e;
e << "INTERFACE library specified with conflicting ALIAS type.";
this->SetError(e.str());
return false;
}
++s;
isAlias = true;
} else if (libType == "INTERFACE") {
if (haveSpecifiedType) {
std::ostringstream e;
e << "INTERFACE library specified with conflicting/multiple types.";
this->SetError(e.str());
return false;
}
if (isAlias) {
std::ostringstream e;
e << "INTERFACE library specified with conflicting ALIAS type.";
this->SetError(e.str());
return false;
}
if (excludeFromAll) {
std::ostringstream e;
e << "INTERFACE library may not be used with EXCLUDE_FROM_ALL.";
this->SetError(e.str());
return false;
}
++s;
type = cmStateEnums::INTERFACE_LIBRARY;
haveSpecifiedType = true;
} else if (*s == "EXCLUDE_FROM_ALL") {
if (type == cmStateEnums::INTERFACE_LIBRARY) {
std::ostringstream e;
e << "INTERFACE library may not be used with EXCLUDE_FROM_ALL.";
this->SetError(e.str());
return false;
}
++s;
excludeFromAll = true;
} else if (*s == "IMPORTED") {
++s;
importTarget = true;
} else if (importTarget && *s == "GLOBAL") {
++s;
importGlobal = true;
} else if (type == cmStateEnums::INTERFACE_LIBRARY && *s == "GLOBAL") {
std::ostringstream e;
e << "GLOBAL option may only be used with IMPORTED libraries.";
this->SetError(e.str());
return false;
} else {
break;
}
}
if (type == cmStateEnums::INTERFACE_LIBRARY) {
if (s != args.end()) {
std::ostringstream e;
e << "INTERFACE library requires no source arguments.";
this->SetError(e.str());
return false;
}
if (importGlobal && !importTarget) {
std::ostringstream e;
e << "INTERFACE library specified as GLOBAL, but not as IMPORTED.";
this->SetError(e.str());
return false;
}
}
bool nameOk = cmGeneratorExpression::IsValidTargetName(libName) &&
!cmGlobalGenerator::IsReservedTarget(libName);
if (nameOk && !importTarget && !isAlias) {
nameOk = libName.find(':') == std::string::npos;
}
if (!nameOk) {
cmake::MessageType messageType = cmake::AUTHOR_WARNING;
std::ostringstream e;
bool issueMessage = false;
switch (this->Makefile->GetPolicyStatus(cmPolicies::CMP0037)) {
case cmPolicies::WARN:
if (type != cmStateEnums::INTERFACE_LIBRARY) {
e << cmPolicies::GetPolicyWarning(cmPolicies::CMP0037) << "\n";
issueMessage = true;
}
case cmPolicies::OLD:
break;
case cmPolicies::NEW:
case cmPolicies::REQUIRED_IF_USED:
case cmPolicies::REQUIRED_ALWAYS:
issueMessage = true;
messageType = cmake::FATAL_ERROR;
}
if (issueMessage) {
e << "The target name \"" << libName
<< "\" is reserved or not valid for certain "
"CMake features, such as generator expressions, and may result "
"in undefined behavior.";
this->Makefile->IssueMessage(messageType, e.str());
if (messageType == cmake::FATAL_ERROR) {
return false;
}
}
}
if (isAlias) {
if (!cmGeneratorExpression::IsValidTargetName(libName)) {
this->SetError("Invalid name for ALIAS: " + libName);
return false;
}
if (excludeFromAll) {
this->SetError("EXCLUDE_FROM_ALL with ALIAS makes no sense.");
return false;
}
if (importTarget || importGlobal) {
this->SetError("IMPORTED with ALIAS is not allowed.");
return false;
}
if (args.size() != 3) {
std::ostringstream e;
e << "ALIAS requires exactly one target argument.";
this->SetError(e.str());
return false;
}
const char* aliasedName = s->c_str();
if (this->Makefile->IsAlias(aliasedName)) {
std::ostringstream e;
e << "cannot create ALIAS target \"" << libName << "\" because target \""
<< aliasedName << "\" is itself an ALIAS.";
this->SetError(e.str());
return false;
}
cmTarget* aliasedTarget =
this->Makefile->FindTargetToUse(aliasedName, true);
if (!aliasedTarget) {
std::ostringstream e;
e << "cannot create ALIAS target \"" << libName << "\" because target \""
<< aliasedName << "\" does not already "
"exist.";
this->SetError(e.str());
return false;
}
cmStateEnums::TargetType aliasedType = aliasedTarget->GetType();
if (aliasedType != cmStateEnums::SHARED_LIBRARY &&
aliasedType != cmStateEnums::STATIC_LIBRARY &&
aliasedType != cmStateEnums::MODULE_LIBRARY &&
aliasedType != cmStateEnums::OBJECT_LIBRARY &&
aliasedType != cmStateEnums::INTERFACE_LIBRARY) {
std::ostringstream e;
e << "cannot create ALIAS target \"" << libName << "\" because target \""
<< aliasedName << "\" is not a library.";
this->SetError(e.str());
return false;
}
if (aliasedTarget->IsImported()) {
std::ostringstream e;
e << "cannot create ALIAS target \"" << libName << "\" because target \""
<< aliasedName << "\" is IMPORTED.";
this->SetError(e.str());
return false;
}
this->Makefile->AddAlias(libName, aliasedName);
return true;
}
if (importTarget && excludeFromAll) {
this->SetError("excludeFromAll with IMPORTED target makes no sense.");
return false;
}
/* ideally we should check whether for the linker language of the target
CMAKE_${LANG}_CREATE_SHARED_LIBRARY is defined and if not default to
STATIC. But at this point we know only the name of the target, but not
yet its linker language. */
if ((type == cmStateEnums::SHARED_LIBRARY ||
type == cmStateEnums::MODULE_LIBRARY) &&
!this->Makefile->GetState()->GetGlobalPropertyAsBool(
"TARGET_SUPPORTS_SHARED_LIBS")) {
std::ostringstream w;
w << "ADD_LIBRARY called with "
<< (type == cmStateEnums::SHARED_LIBRARY ? "SHARED" : "MODULE")
<< " option but the target platform does not support dynamic linking. "
"Building a STATIC library instead. This may lead to problems.";
this->Makefile->IssueMessage(cmake::AUTHOR_WARNING, w.str());
type = cmStateEnums::STATIC_LIBRARY;
}
// Handle imported target creation.
if (importTarget) {
// The IMPORTED signature requires a type to be specified explicitly.
if (!haveSpecifiedType) {
this->SetError("called with IMPORTED argument but no library type.");
return false;
}
if (type == cmStateEnums::OBJECT_LIBRARY) {
std::string reason;
if (!this->Makefile->GetGlobalGenerator()->HasKnownObjectFileLocation(
&reason)) {
this->Makefile->IssueMessage(
cmake::FATAL_ERROR,
"The OBJECT library type may not be used for IMPORTED libraries" +
reason + ".");
return true;
}
}
if (type == cmStateEnums::INTERFACE_LIBRARY) {
if (!cmGeneratorExpression::IsValidTargetName(libName)) {
std::ostringstream e;
e << "Invalid name for IMPORTED INTERFACE library target: " << libName;
this->SetError(e.str());
return false;
}
}
// Make sure the target does not already exist.
if (this->Makefile->FindTargetToUse(libName)) {
std::ostringstream e;
e << "cannot create imported target \"" << libName
<< "\" because another target with the same name already exists.";
this->SetError(e.str());
return false;
}
// Create the imported target.
this->Makefile->AddImportedTarget(libName, type, importGlobal);
return true;
}
// A non-imported target may not have UNKNOWN type.
if (type == cmStateEnums::UNKNOWN_LIBRARY) {
this->Makefile->IssueMessage(
cmake::FATAL_ERROR,
"The UNKNOWN library type may be used only for IMPORTED libraries.");
return true;
}
// Enforce name uniqueness.
{
std::string msg;
if (!this->Makefile->EnforceUniqueName(libName, msg)) {
this->SetError(msg);
return false;
}
}
std::vector<std::string> srclists;
if (type == cmStateEnums::INTERFACE_LIBRARY) {
if (!cmGeneratorExpression::IsValidTargetName(libName) ||
libName.find("::") != std::string::npos) {
std::ostringstream e;
e << "Invalid name for INTERFACE library target: " << libName;
this->SetError(e.str());
return false;
}
this->Makefile->AddLibrary(libName, type, srclists, excludeFromAll);
return true;
}
if (s == args.end()) {
std::string msg = "You have called ADD_LIBRARY for library ";
msg += args[0];
msg += " without any source files. This typically indicates a problem ";
msg += "with your CMakeLists.txt file";
cmSystemTools::Message(msg.c_str(), "Warning");
}
srclists.insert(srclists.end(), s, args.end());
this->Makefile->AddLibrary(libName, type, srclists, excludeFromAll);
return true;
}