From ba675f1ecc472d00244344f128c124ee4b323faf Mon Sep 17 00:00:00 2001 From: Brad King Date: Tue, 14 Jan 2020 15:25:25 -0500 Subject: Tests: Enable CMP0022 in ExportImport out-of-dir linking case Since out-of-dir linking is enabled by CMP0079, which is newer than CMP0022, it is likely that both will be set in practice when out-of-dir linking is used. --- Tests/ExportImport/Export/CMakeLists.txt | 1 + 1 file changed, 1 insertion(+) diff --git a/Tests/ExportImport/Export/CMakeLists.txt b/Tests/ExportImport/Export/CMakeLists.txt index 7c81aea..387fe6b 100644 --- a/Tests/ExportImport/Export/CMakeLists.txt +++ b/Tests/ExportImport/Export/CMakeLists.txt @@ -156,6 +156,7 @@ target_link_libraries(testLibDepends PRIVATE testStaticLibRequiredPrivate) cmake_policy(POP) cmake_policy(PUSH) +cmake_policy(SET CMP0022 NEW) cmake_policy(SET CMP0079 NEW) add_library(TopDirLib STATIC testTopDirLib.c) add_subdirectory(SubDirLinkA) -- cgit v0.12 From acee6291039537a176fef70820648fc3d8cb4fb0 Mon Sep 17 00:00:00 2001 From: Brad King Date: Thu, 16 Jan 2020 11:18:19 -0500 Subject: cmTargetLinkLibrariesCommand: Move HandleLibrary to helper struct --- Source/cmTargetLinkLibrariesCommand.cxx | 147 ++++++++++++++++++-------------- 1 file changed, 82 insertions(+), 65 deletions(-) diff --git a/Source/cmTargetLinkLibrariesCommand.cxx b/Source/cmTargetLinkLibrariesCommand.cxx index ad59748..c4cb27e 100644 --- a/Source/cmTargetLinkLibrariesCommand.cxx +++ b/Source/cmTargetLinkLibrariesCommand.cxx @@ -34,15 +34,23 @@ enum ProcessingState const char* LinkLibraryTypeNames[3] = { "general", "debug", "optimized" }; +struct TLL +{ + cmMakefile& Makefile; + cmTarget* Target; + bool WarnRemoteInterface = false; + bool RejectRemoteLinking = false; + bool EncodeRemoteReference = false; + TLL(cmMakefile& mf, cmTarget* target); + bool HandleLibrary(ProcessingState currentProcessingState, + const std::string& lib, cmTargetLinkLibraryType llt); +}; + } // namespace static void LinkLibraryTypeSpecifierWarning(cmMakefile& mf, int left, int right); -static bool HandleLibrary(cmMakefile& mf, cmTarget* target, - ProcessingState currentProcessingState, - const std::string& lib, cmTargetLinkLibraryType llt); - bool cmTargetLinkLibrariesCommand(std::vector const& args, cmExecutionStatus& status) { @@ -149,6 +157,8 @@ bool cmTargetLinkLibrariesCommand(std::vector const& args, return true; } + TLL tll(mf, target); + // Keep track of link configuration specifiers. cmTargetLinkLibraryType llt = GENERAL_LibraryType; bool haveLLT = false; @@ -247,7 +257,7 @@ bool cmTargetLinkLibrariesCommand(std::vector const& args, } else if (haveLLT) { // The link type was specified by the previous argument. haveLLT = false; - if (!HandleLibrary(mf, target, currentProcessingState, args[i], llt)) { + if (!tll.HandleLibrary(currentProcessingState, args[i], llt)) { return false; } } else { @@ -268,7 +278,7 @@ bool cmTargetLinkLibrariesCommand(std::vector const& args, llt = OPTIMIZED_LibraryType; } } - if (!HandleLibrary(mf, target, currentProcessingState, args[i], llt)) { + if (!tll.HandleLibrary(currentProcessingState, args[i], llt)) { return false; } } @@ -311,21 +321,44 @@ static void LinkLibraryTypeSpecifierWarning(cmMakefile& mf, int left, "\" instead of a library name. The first specifier will be ignored.")); } -static bool HandleLibrary(cmMakefile& mf, cmTarget* target, - ProcessingState currentProcessingState, - const std::string& lib, cmTargetLinkLibraryType llt) +namespace { + +TLL::TLL(cmMakefile& mf, cmTarget* target) + : Makefile(mf) + , Target(target) { - if (target->GetType() == cmStateEnums::INTERFACE_LIBRARY && + if (&this->Makefile != this->Target->GetMakefile()) { + // The LHS target was created in another directory. + switch (this->Makefile.GetPolicyStatus(cmPolicies::CMP0079)) { + case cmPolicies::WARN: + this->WarnRemoteInterface = true; + CM_FALLTHROUGH; + case cmPolicies::OLD: + this->RejectRemoteLinking = true; + break; + case cmPolicies::REQUIRED_ALWAYS: + case cmPolicies::REQUIRED_IF_USED: + case cmPolicies::NEW: + this->EncodeRemoteReference = true; + break; + } + } +} + +bool TLL::HandleLibrary(ProcessingState currentProcessingState, + const std::string& lib, cmTargetLinkLibraryType llt) +{ + if (this->Target->GetType() == cmStateEnums::INTERFACE_LIBRARY && currentProcessingState != ProcessingKeywordLinkInterface) { - mf.IssueMessage( + this->Makefile.IssueMessage( MessageType::FATAL_ERROR, "INTERFACE library can only be used with the INTERFACE keyword of " "target_link_libraries"); return false; } - if (target->IsImported() && + if (this->Target->IsImported() && currentProcessingState != ProcessingKeywordLinkInterface) { - mf.IssueMessage( + this->Makefile.IssueMessage( MessageType::FATAL_ERROR, "IMPORTED library can only be used with the INTERFACE keyword of " "target_link_libraries"); @@ -340,11 +373,12 @@ static bool HandleLibrary(cmMakefile& mf, cmTarget* target, currentProcessingState == ProcessingKeywordLinkInterface) ? cmTarget::KeywordTLLSignature : cmTarget::PlainTLLSignature; - if (!target->PushTLLCommandTrace(sig, mf.GetExecutionContext())) { + if (!this->Target->PushTLLCommandTrace( + sig, this->Makefile.GetExecutionContext())) { std::ostringstream e; const char* modal = nullptr; MessageType messageType = MessageType::AUTHOR_WARNING; - switch (mf.GetPolicyStatus(cmPolicies::CMP0023)) { + switch (this->Makefile.GetPolicyStatus(cmPolicies::CMP0023)) { case cmPolicies::WARN: e << cmPolicies::GetPolicyWarning(cmPolicies::CMP0023) << "\n"; modal = "should"; @@ -365,47 +399,27 @@ static bool HandleLibrary(cmMakefile& mf, cmTarget* target, e << "The " << existingSig << " signature for target_link_libraries has " "already been used with the target \"" - << target->GetName() + << this->Target->GetName() << "\". All uses of target_link_libraries with a target " << modal << " be either all-keyword or all-plain.\n"; - target->GetTllSignatureTraces(e, - sig == cmTarget::KeywordTLLSignature - ? cmTarget::PlainTLLSignature - : cmTarget::KeywordTLLSignature); - mf.IssueMessage(messageType, e.str()); + this->Target->GetTllSignatureTraces(e, + sig == cmTarget::KeywordTLLSignature + ? cmTarget::PlainTLLSignature + : cmTarget::KeywordTLLSignature); + this->Makefile.IssueMessage(messageType, e.str()); if (messageType == MessageType::FATAL_ERROR) { return false; } } } - bool warnRemoteInterface = false; - bool rejectRemoteLinking = false; - bool encodeRemoteReference = false; - if (&mf != target->GetMakefile()) { - // The LHS target was created in another directory. - switch (mf.GetPolicyStatus(cmPolicies::CMP0079)) { - case cmPolicies::WARN: - warnRemoteInterface = true; - CM_FALLTHROUGH; - case cmPolicies::OLD: - rejectRemoteLinking = true; - break; - case cmPolicies::REQUIRED_ALWAYS: - case cmPolicies::REQUIRED_IF_USED: - case cmPolicies::NEW: - encodeRemoteReference = true; - break; - } - } - std::string libRef; - if (encodeRemoteReference && !cmSystemTools::FileIsFullPath(lib)) { + if (this->EncodeRemoteReference && !cmSystemTools::FileIsFullPath(lib)) { // This is a library name added by a caller that is not in the // same directory as the target was created. Add a suffix to // the name to tell ResolveLinkItem to look up the name in the // caller's directory. - cmDirectoryId const dirId = mf.GetDirectoryId(); + cmDirectoryId const dirId = this->Makefile.GetDirectoryId(); // FIXME: The "lib" may be a genex with a list inside it. // After expansion this id will only attach to the last entry, // or may attach to an empty string! We will need another way @@ -424,18 +438,18 @@ static bool HandleLibrary(cmMakefile& mf, cmTarget* target, if (currentProcessingState != ProcessingKeywordLinkInterface && currentProcessingState != ProcessingPlainLinkInterface) { - if (rejectRemoteLinking) { - mf.IssueMessage( + if (this->RejectRemoteLinking) { + this->Makefile.IssueMessage( MessageType::FATAL_ERROR, cmStrCat("Attempt to add link library \"", lib, "\" to target \"", - target->GetName(), + this->Target->GetName(), "\" which is not built in this " "directory.\nThis is allowed only when policy CMP0079 " "is set to NEW.")); return false; } - cmTarget* tgt = mf.GetGlobalGenerator()->FindTarget(lib); + cmTarget* tgt = this->Makefile.GetGlobalGenerator()->FindTarget(lib); if (tgt && (tgt->GetType() != cmStateEnums::STATIC_LIBRARY) && (tgt->GetType() != cmStateEnums::SHARED_LIBRARY) && @@ -443,7 +457,7 @@ static bool HandleLibrary(cmMakefile& mf, cmTarget* target, (tgt->GetType() != cmStateEnums::OBJECT_LIBRARY) && (tgt->GetType() != cmStateEnums::INTERFACE_LIBRARY) && !tgt->IsExecutableWithExports()) { - mf.IssueMessage( + this->Makefile.IssueMessage( MessageType::FATAL_ERROR, cmStrCat( "Target \"", lib, "\" of type ", @@ -453,15 +467,15 @@ static bool HandleLibrary(cmMakefile& mf, cmTarget* target, "executables with the ENABLE_EXPORTS property set.")); } - target->AddLinkLibrary(mf, lib, libRef, llt); + this->Target->AddLinkLibrary(this->Makefile, lib, libRef, llt); } - if (warnRemoteInterface) { - mf.IssueMessage( + if (this->WarnRemoteInterface) { + this->Makefile.IssueMessage( MessageType::AUTHOR_WARNING, cmStrCat( cmPolicies::GetPolicyWarning(cmPolicies::CMP0079), "\nTarget\n ", - target->GetName(), + this->Target->GetName(), "\nis not created in this " "directory. For compatibility with older versions of CMake, link " "library\n ", @@ -476,15 +490,15 @@ static bool HandleLibrary(cmMakefile& mf, cmTarget* target, // STATIC library.) if (currentProcessingState == ProcessingKeywordPrivateInterface || currentProcessingState == ProcessingPlainPrivateInterface) { - if (target->GetType() == cmStateEnums::STATIC_LIBRARY || - target->GetType() == cmStateEnums::OBJECT_LIBRARY) { + if (this->Target->GetType() == cmStateEnums::STATIC_LIBRARY || + this->Target->GetType() == cmStateEnums::OBJECT_LIBRARY) { std::string configLib = - target->GetDebugGeneratorExpressions(libRef, llt); + this->Target->GetDebugGeneratorExpressions(libRef, llt); if (cmGeneratorExpression::IsValidTargetName(lib) || cmGeneratorExpression::Find(lib) != std::string::npos) { configLib = "$"; } - target->AppendProperty("INTERFACE_LINK_LIBRARIES", configLib); + this->Target->AppendProperty("INTERFACE_LINK_LIBRARIES", configLib); } return true; } @@ -492,8 +506,9 @@ static bool HandleLibrary(cmMakefile& mf, cmTarget* target, // Handle general case where the command was called with another keyword than // PRIVATE / LINK_PRIVATE or none at all. (The "INTERFACE_LINK_LIBRARIES" // property of the target on the LHS shall be populated.) - target->AppendProperty("INTERFACE_LINK_LIBRARIES", - target->GetDebugGeneratorExpressions(libRef, llt)); + this->Target->AppendProperty( + "INTERFACE_LINK_LIBRARIES", + this->Target->GetDebugGeneratorExpressions(libRef, llt)); // Stop processing if called without any keyword. if (currentProcessingState == ProcessingLinkLibraries) { @@ -501,13 +516,13 @@ static bool HandleLibrary(cmMakefile& mf, cmTarget* target, } // Stop processing if policy CMP0022 is set to NEW. const cmPolicies::PolicyStatus policy22Status = - target->GetPolicyStatusCMP0022(); + this->Target->GetPolicyStatusCMP0022(); if (policy22Status != cmPolicies::OLD && policy22Status != cmPolicies::WARN) { return true; } // Stop processing if called with an INTERFACE library on the LHS. - if (target->GetType() == cmStateEnums::INTERFACE_LIBRARY) { + if (this->Target->GetType() == cmStateEnums::INTERFACE_LIBRARY) { return true; } @@ -517,7 +532,7 @@ static bool HandleLibrary(cmMakefile& mf, cmTarget* target, { // Get the list of configurations considered to be DEBUG. std::vector debugConfigs = - mf.GetCMakeInstance()->GetDebugConfigs(); + this->Makefile.GetCMakeInstance()->GetDebugConfigs(); std::string prop; // Include this library in the link interface for the target. @@ -525,22 +540,24 @@ static bool HandleLibrary(cmMakefile& mf, cmTarget* target, // Put in the DEBUG configuration interfaces. for (std::string const& dc : debugConfigs) { prop = cmStrCat("LINK_INTERFACE_LIBRARIES_", dc); - target->AppendProperty(prop, libRef); + this->Target->AppendProperty(prop, libRef); } } if (llt == OPTIMIZED_LibraryType || llt == GENERAL_LibraryType) { // Put in the non-DEBUG configuration interfaces. - target->AppendProperty("LINK_INTERFACE_LIBRARIES", libRef); + this->Target->AppendProperty("LINK_INTERFACE_LIBRARIES", libRef); // Make sure the DEBUG configuration interfaces exist so that the // general one will not be used as a fall-back. for (std::string const& dc : debugConfigs) { prop = cmStrCat("LINK_INTERFACE_LIBRARIES_", dc); - if (!target->GetProperty(prop)) { - target->SetProperty(prop, ""); + if (!this->Target->GetProperty(prop)) { + this->Target->SetProperty(prop, ""); } } } } return true; } + +} // namespace -- cgit v0.12 From f0e67da0615bd746626cab8e4dff2ba60c7aa2fe Mon Sep 17 00:00:00 2001 From: Brad King Date: Tue, 14 Jan 2020 13:14:55 -0500 Subject: target_link_libraries: Fix out-of-dir linking of a list of targets In a case like target_link_libraries(targetInOtherDir PUBLIC "$<1:a;b>") then all entries in the list need to be looked up in the caller's scope. Previously our `::@(directory-id)` suffix would apply only to the last entry. Instead surround the entire entry by a pair `::@(directory-id);...;::@` so that the `::@` syntax can encode a directory lookup scope change evaluated as the list is processed. Fixes: #20204 --- Help/prop_tgt/LINK_LIBRARIES_INDIRECTION.txt | 6 +- Source/cmExportFileGenerator.cxx | 4 ++ Source/cmGeneratorTarget.cxx | 77 +++++++++++++--------- Source/cmGeneratorTarget.h | 8 +++ Source/cmTarget.cxx | 13 +--- Source/cmTarget.h | 4 +- Source/cmTargetLinkLibrariesCommand.cxx | 73 ++++++++++++-------- .../target_link_libraries/SubDirB/CMakeLists.txt | 5 +- .../ExportImport/Export/SubDirLinkA/CMakeLists.txt | 2 +- .../CMP0079-iface-NEW-stdout.txt | 2 +- .../CMP0079-iface-OLD-stdout.txt | 2 +- .../CMP0079-iface-WARN-stderr.txt | 20 +++++- .../CMP0079-iface-WARN-stdout.txt | 2 +- .../CMP0079-iface/CMakeLists.txt | 2 +- .../CMP0079-link-NEW-bogus-stderr.txt | 2 +- .../CMP0079-link-NEW-bogus.cmake | 2 +- .../CMP0079-link-NEW-stdout.txt | 2 +- 17 files changed, 141 insertions(+), 85 deletions(-) diff --git a/Help/prop_tgt/LINK_LIBRARIES_INDIRECTION.txt b/Help/prop_tgt/LINK_LIBRARIES_INDIRECTION.txt index fab4418..476e4a6 100644 --- a/Help/prop_tgt/LINK_LIBRARIES_INDIRECTION.txt +++ b/Help/prop_tgt/LINK_LIBRARIES_INDIRECTION.txt @@ -1,9 +1,9 @@ .. note:: A call to :command:`target_link_libraries( ...)` may update this property on ````. If ```` was not created in the same - directory as the call then :command:`target_link_libraries` will add a - suffix of the form ``::@(directory-id)`` to each entry, where the - ``::@`` is a separator and the ``(directory-id)`` is unspecified. + directory as the call then :command:`target_link_libraries` will wrap each + entry with the form ``::@(directory-id);...;::@``, where the ``::@`` is + literal and the ``(directory-id)`` is unspecified. This tells the generators that the named libraries must be looked up in the scope of the caller rather than in the scope in which the ```` was created. Valid directory ids are stripped on export diff --git a/Source/cmExportFileGenerator.cxx b/Source/cmExportFileGenerator.cxx index 7a4b887..27e9906 100644 --- a/Source/cmExportFileGenerator.cxx +++ b/Source/cmExportFileGenerator.cxx @@ -14,6 +14,7 @@ #include "cmComputeLinkInformation.h" #include "cmGeneratedFileStream.h" #include "cmGeneratorTarget.h" +#include "cmGlobalGenerator.h" #include "cmLinkItem.h" #include "cmLocalGenerator.h" #include "cmMakefile.h" @@ -640,6 +641,9 @@ void cmExportFileGenerator::ResolveTargetsInGeneratorExpressions( 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 { diff --git a/Source/cmGeneratorTarget.cxx b/Source/cmGeneratorTarget.cxx index 523083a..d26cbe0 100644 --- a/Source/cmGeneratorTarget.cxx +++ b/Source/cmGeneratorTarget.cxx @@ -5406,16 +5406,39 @@ void cmGeneratorTarget::ReportPropertyOrigin( areport); } +bool cmGeneratorTarget::IsLinkLookupScope(std::string const& n, + cmLocalGenerator const*& lg) const +{ + if (cmHasLiteralPrefix(n, CMAKE_DIRECTORY_ID_SEP)) { + cmDirectoryId const dirId = n.substr(sizeof(CMAKE_DIRECTORY_ID_SEP) - 1); + if (dirId.String.empty()) { + lg = this->LocalGenerator; + return true; + } + if (cmLocalGenerator const* otherLG = + this->GlobalGenerator->FindLocalGenerator(dirId)) { + lg = otherLG; + return true; + } + } + return false; +} + void cmGeneratorTarget::LookupLinkItems(std::vector const& names, cmListFileBacktrace const& bt, std::vector& items) const { + cmLocalGenerator const* lg = this->LocalGenerator; for (std::string const& n : names) { + if (this->IsLinkLookupScope(n, lg)) { + continue; + } + std::string name = this->CheckCMP0004(n); if (name == this->GetName() || name.empty()) { continue; } - items.push_back(this->ResolveLinkItem(name, bt)); + items.push_back(this->ResolveLinkItem(name, bt, lg)); } } @@ -5424,6 +5447,7 @@ void cmGeneratorTarget::ExpandLinkItems( cmGeneratorTarget const* headTarget, bool usage_requirements_only, std::vector& items, bool& hadHeadSensitiveCondition) const { + // Keep this logic in sync with ComputeLinkImplementationLibraries. cmGeneratorExpression ge; cmGeneratorExpressionDAGChecker dagChecker(this, prop, nullptr, nullptr); // The $ expression may be in a link interface to specify private @@ -6499,6 +6523,7 @@ void cmGeneratorTarget::ComputeLinkImplementationLibraries( const std::string& config, cmOptionalLinkImplementation& impl, cmGeneratorTarget const* head) const { + cmLocalGenerator const* lg = this->LocalGenerator; cmStringRange entryRange = this->Target->GetLinkImplementationEntries(); cmBacktraceRange btRange = this->Target->GetLinkImplementationBacktraces(); cmBacktraceRange::const_iterator btIt = btRange.begin(); @@ -6507,6 +6532,7 @@ void cmGeneratorTarget::ComputeLinkImplementationLibraries( end = entryRange.end(); le != end; ++le, ++btIt) { std::vector llibs; + // Keep this logic in sync with ExpandLinkItems. cmGeneratorExpressionDAGChecker dagChecker(this, "LINK_LIBRARIES", nullptr, nullptr); cmGeneratorExpression ge(*btIt); @@ -6519,6 +6545,10 @@ void cmGeneratorTarget::ComputeLinkImplementationLibraries( } for (std::string const& lib : llibs) { + if (this->IsLinkLookupScope(lib, lg)) { + continue; + } + // Skip entries that resolve to the target itself or are empty. std::string name = this->CheckCMP0004(lib); if (name == this->GetName() || name.empty()) { @@ -6553,7 +6583,7 @@ void cmGeneratorTarget::ComputeLinkImplementationLibraries( } // The entry is meant for this configuration. - impl.Libraries.emplace_back(this->ResolveLinkItem(name, *btIt), + impl.Libraries.emplace_back(this->ResolveLinkItem(name, *btIt, lg), evaluated != *le); } @@ -6590,38 +6620,16 @@ void cmGeneratorTarget::ComputeLinkImplementationLibraries( cmGeneratorTarget::TargetOrString cmGeneratorTarget::ResolveTargetReference( std::string const& name) const { - cmLocalGenerator const* lg = this->LocalGenerator; - std::string const* lookupName = &name; - - // When target_link_libraries() is called with a LHS target that is - // not created in the calling directory it adds a directory id suffix - // that we can use to look up the calling directory. It is that scope - // in which the item name is meaningful. This case is relatively rare - // so we allocate a separate string only when the directory id is present. - std::string::size_type pos = name.find(CMAKE_DIRECTORY_ID_SEP); - std::string plainName; - if (pos != std::string::npos) { - // We will look up the plain name without the directory id suffix. - plainName = name.substr(0, pos); - - // We will look up in the scope of the directory id. - // If we do not recognize the id then leave the original - // syntax in place to produce an indicative error later. - cmDirectoryId const dirId = - name.substr(pos + sizeof(CMAKE_DIRECTORY_ID_SEP) - 1); - if (cmLocalGenerator const* otherLG = - this->GlobalGenerator->FindLocalGenerator(dirId)) { - lg = otherLG; - lookupName = &plainName; - } - } + return this->ResolveTargetReference(name, this->LocalGenerator); +} +cmGeneratorTarget::TargetOrString cmGeneratorTarget::ResolveTargetReference( + std::string const& name, cmLocalGenerator const* lg) const +{ TargetOrString resolved; - if (cmGeneratorTarget* tgt = lg->FindGeneratorTargetToUse(*lookupName)) { + if (cmGeneratorTarget* tgt = lg->FindGeneratorTargetToUse(name)) { resolved.Target = tgt; - } else if (lookupName == &plainName) { - resolved.String = std::move(plainName); } else { resolved.String = name; } @@ -6632,7 +6640,14 @@ cmGeneratorTarget::TargetOrString cmGeneratorTarget::ResolveTargetReference( cmLinkItem cmGeneratorTarget::ResolveLinkItem( std::string const& name, cmListFileBacktrace const& bt) const { - TargetOrString resolved = this->ResolveTargetReference(name); + return this->ResolveLinkItem(name, bt, this->LocalGenerator); +} + +cmLinkItem cmGeneratorTarget::ResolveLinkItem(std::string const& name, + cmListFileBacktrace const& bt, + cmLocalGenerator const* lg) const +{ + TargetOrString resolved = this->ResolveTargetReference(name, lg); if (!resolved.Target) { return cmLinkItem(resolved.String, bt); diff --git a/Source/cmGeneratorTarget.h b/Source/cmGeneratorTarget.h index 0a72cbe..9d06104 100644 --- a/Source/cmGeneratorTarget.h +++ b/Source/cmGeneratorTarget.h @@ -378,9 +378,14 @@ public: cmGeneratorTarget* Target = nullptr; }; TargetOrString ResolveTargetReference(std::string const& name) const; + TargetOrString ResolveTargetReference(std::string const& name, + cmLocalGenerator const* lg) const; cmLinkItem ResolveLinkItem(std::string const& name, cmListFileBacktrace const& bt) const; + cmLinkItem ResolveLinkItem(std::string const& name, + cmListFileBacktrace const& bt, + cmLocalGenerator const* lg) const; // Compute the set of languages compiled by the target. This is // computed every time it is called because the languages can change @@ -919,6 +924,9 @@ private: std::unordered_set UnityBatchedSourceFiles; + bool IsLinkLookupScope(std::string const& n, + cmLocalGenerator const*& lg) const; + void ExpandLinkItems(std::string const& prop, std::string const& value, std::string const& config, const cmGeneratorTarget* headTarget, diff --git a/Source/cmTarget.cxx b/Source/cmTarget.cxx index 9563321..457baf3 100644 --- a/Source/cmTarget.cxx +++ b/Source/cmTarget.cxx @@ -937,14 +937,7 @@ cmTarget::LinkLibraryVectorType const& cmTarget::GetOriginalLinkLibraries() return impl->OriginalLinkLibraries; } -void cmTarget::AddLinkLibrary(cmMakefile& mf, const std::string& lib, - cmTargetLinkLibraryType llt) -{ - this->AddLinkLibrary(mf, lib, lib, llt); -} - void cmTarget::AddLinkLibrary(cmMakefile& mf, std::string const& lib, - std::string const& libRef, cmTargetLinkLibraryType llt) { cmTarget* tgt = mf.FindTargetToUse(lib); @@ -953,13 +946,13 @@ void cmTarget::AddLinkLibrary(cmMakefile& mf, std::string const& lib, const std::string libName = (isNonImportedTarget && llt != GENERAL_LibraryType) - ? targetNameGenex(libRef) - : libRef; + ? targetNameGenex(lib) + : lib; this->AppendProperty("LINK_LIBRARIES", this->GetDebugGeneratorExpressions(libName, llt)); } - if (cmGeneratorExpression::Find(lib) != std::string::npos || lib != libRef || + if (cmGeneratorExpression::Find(lib) != std::string::npos || (tgt && (tgt->GetType() == cmStateEnums::INTERFACE_LIBRARY || tgt->GetType() == cmStateEnums::OBJECT_LIBRARY)) || diff --git a/Source/cmTarget.h b/Source/cmTarget.h index bdf8c0f..ca37f0d 100644 --- a/Source/cmTarget.h +++ b/Source/cmTarget.h @@ -110,10 +110,8 @@ public: //! Clear the dependency information recorded for this target, if any. void ClearDependencyInformation(cmMakefile& mf); - void AddLinkLibrary(cmMakefile& mf, const std::string& lib, - cmTargetLinkLibraryType llt); void AddLinkLibrary(cmMakefile& mf, std::string const& lib, - std::string const& libRef, cmTargetLinkLibraryType llt); + cmTargetLinkLibraryType llt); enum TLLSignature { diff --git a/Source/cmTargetLinkLibrariesCommand.cxx b/Source/cmTargetLinkLibrariesCommand.cxx index c4cb27e..ca4bfda 100644 --- a/Source/cmTargetLinkLibrariesCommand.cxx +++ b/Source/cmTargetLinkLibrariesCommand.cxx @@ -4,6 +4,8 @@ #include #include +#include +#include #include "cmExecutionStatus.h" #include "cmGeneratorExpression.h" @@ -41,9 +43,16 @@ struct TLL bool WarnRemoteInterface = false; bool RejectRemoteLinking = false; bool EncodeRemoteReference = false; + std::string DirectoryId; + std::unordered_set Props; + TLL(cmMakefile& mf, cmTarget* target); + ~TLL(); + bool HandleLibrary(ProcessingState currentProcessingState, const std::string& lib, cmTargetLinkLibraryType llt); + void AppendProperty(std::string const& prop, std::string const& value); + void AffectsProperty(std::string const& prop); }; } // namespace @@ -343,6 +352,10 @@ TLL::TLL(cmMakefile& mf, cmTarget* target) break; } } + if (this->EncodeRemoteReference) { + cmDirectoryId const dirId = this->Makefile.GetDirectoryId(); + this->DirectoryId = cmStrCat(CMAKE_DIRECTORY_ID_SEP, dirId.String); + } } bool TLL::HandleLibrary(ProcessingState currentProcessingState, @@ -413,25 +426,6 @@ bool TLL::HandleLibrary(ProcessingState currentProcessingState, } } - std::string libRef; - if (this->EncodeRemoteReference && !cmSystemTools::FileIsFullPath(lib)) { - // This is a library name added by a caller that is not in the - // same directory as the target was created. Add a suffix to - // the name to tell ResolveLinkItem to look up the name in the - // caller's directory. - cmDirectoryId const dirId = this->Makefile.GetDirectoryId(); - // FIXME: The "lib" may be a genex with a list inside it. - // After expansion this id will only attach to the last entry, - // or may attach to an empty string! We will need another way - // to encode this that can apply to a whole list. See issue #20204. - libRef = lib + CMAKE_DIRECTORY_ID_SEP + dirId.String; - } else { - // This is an absolute path or a library name added by a caller - // in the same directory as the target was created. We can use - // the original name directly. - libRef = lib; - } - // Handle normal case where the command was called with another keyword than // INTERFACE / LINK_INTERFACE_LIBRARIES or none at all. (The "LINK_LIBRARIES" // property of the target on the LHS shall be populated.) @@ -467,7 +461,8 @@ bool TLL::HandleLibrary(ProcessingState currentProcessingState, "executables with the ENABLE_EXPORTS property set.")); } - this->Target->AddLinkLibrary(this->Makefile, lib, libRef, llt); + this->AffectsProperty("LINK_LIBRARIES"); + this->Target->AddLinkLibrary(this->Makefile, lib, llt); } if (this->WarnRemoteInterface) { @@ -493,12 +488,12 @@ bool TLL::HandleLibrary(ProcessingState currentProcessingState, if (this->Target->GetType() == cmStateEnums::STATIC_LIBRARY || this->Target->GetType() == cmStateEnums::OBJECT_LIBRARY) { std::string configLib = - this->Target->GetDebugGeneratorExpressions(libRef, llt); + this->Target->GetDebugGeneratorExpressions(lib, llt); if (cmGeneratorExpression::IsValidTargetName(lib) || cmGeneratorExpression::Find(lib) != std::string::npos) { configLib = "$"; } - this->Target->AppendProperty("INTERFACE_LINK_LIBRARIES", configLib); + this->AppendProperty("INTERFACE_LINK_LIBRARIES", configLib); } return true; } @@ -506,9 +501,8 @@ bool TLL::HandleLibrary(ProcessingState currentProcessingState, // Handle general case where the command was called with another keyword than // PRIVATE / LINK_PRIVATE or none at all. (The "INTERFACE_LINK_LIBRARIES" // property of the target on the LHS shall be populated.) - this->Target->AppendProperty( - "INTERFACE_LINK_LIBRARIES", - this->Target->GetDebugGeneratorExpressions(libRef, llt)); + this->AppendProperty("INTERFACE_LINK_LIBRARIES", + this->Target->GetDebugGeneratorExpressions(lib, llt)); // Stop processing if called without any keyword. if (currentProcessingState == ProcessingLinkLibraries) { @@ -540,12 +534,12 @@ bool TLL::HandleLibrary(ProcessingState currentProcessingState, // Put in the DEBUG configuration interfaces. for (std::string const& dc : debugConfigs) { prop = cmStrCat("LINK_INTERFACE_LIBRARIES_", dc); - this->Target->AppendProperty(prop, libRef); + this->AppendProperty(prop, lib); } } if (llt == OPTIMIZED_LibraryType || llt == GENERAL_LibraryType) { // Put in the non-DEBUG configuration interfaces. - this->Target->AppendProperty("LINK_INTERFACE_LIBRARIES", libRef); + this->AppendProperty("LINK_INTERFACE_LIBRARIES", lib); // Make sure the DEBUG configuration interfaces exist so that the // general one will not be used as a fall-back. @@ -560,4 +554,29 @@ bool TLL::HandleLibrary(ProcessingState currentProcessingState, return true; } +void TLL::AppendProperty(std::string const& prop, std::string const& value) +{ + this->AffectsProperty(prop); + this->Target->AppendProperty(prop, value); +} + +void TLL::AffectsProperty(std::string const& prop) +{ + if (!this->EncodeRemoteReference) { + return; + } + // Add a wrapper to the expression to tell LookupLinkItems to look up + // names in the caller's directory. + if (this->Props.insert(prop).second) { + this->Target->AppendProperty(prop, this->DirectoryId); + } +} + +TLL::~TLL() +{ + for (std::string const& prop : this->Props) { + this->Target->AppendProperty(prop, CMAKE_DIRECTORY_ID_SEP); + } +} + } // namespace diff --git a/Tests/CMakeCommands/target_link_libraries/SubDirB/CMakeLists.txt b/Tests/CMakeCommands/target_link_libraries/SubDirB/CMakeLists.txt index b430834..06d1111 100644 --- a/Tests/CMakeCommands/target_link_libraries/SubDirB/CMakeLists.txt +++ b/Tests/CMakeCommands/target_link_libraries/SubDirB/CMakeLists.txt @@ -4,8 +4,9 @@ add_executable(SubDirB SubDirB.c) # be visible to the directory in which TopDir is defined. target_link_libraries(TopDir PUBLIC debug SameNameImported optimized SameNameImported) -#FIXME: Demonstrate known issue #20204. -#target_link_libraries(TopDir PUBLIC "$<1:SameNameImported;SameNameImported>") +# Link to a list of targets imported in this directory that would not +# normally be visible to the directory in which TopDir is defined. +target_link_libraries(TopDir PUBLIC "$<1:SameNameImported;SameNameImported>") # Link SubDirA to a target imported in this directory that has the same # name as a target imported in SubDirA's directory. We verify when diff --git a/Tests/ExportImport/Export/SubDirLinkA/CMakeLists.txt b/Tests/ExportImport/Export/SubDirLinkA/CMakeLists.txt index 1c3c9dc..1aa41d2 100644 --- a/Tests/ExportImport/Export/SubDirLinkA/CMakeLists.txt +++ b/Tests/ExportImport/Export/SubDirLinkA/CMakeLists.txt @@ -1,6 +1,6 @@ add_library(SubDirLinkAImported IMPORTED INTERFACE) target_compile_definitions(SubDirLinkAImported INTERFACE DEF_SubDirLinkAImportedForExport) -target_link_libraries(TopDirLib PUBLIC SubDirLinkAImported) +target_link_libraries(TopDirLib PUBLIC debug "$<1:SubDirLinkAImported;SubDirLinkAImported>" optimized "$<1:SubDirLinkAImported;SubDirLinkAImported>") add_library(SubDirLinkA STATIC SubDirLinkA.c) diff --git a/Tests/RunCMake/target_link_libraries/CMP0079-iface-NEW-stdout.txt b/Tests/RunCMake/target_link_libraries/CMP0079-iface-NEW-stdout.txt index 90a5f37..1c5cf45 100644 --- a/Tests/RunCMake/target_link_libraries/CMP0079-iface-NEW-stdout.txt +++ b/Tests/RunCMake/target_link_libraries/CMP0079-iface-NEW-stdout.txt @@ -1 +1 @@ --- INTERFACE_LINK_LIBRARIES='foo::@\([Xx0-9A-Fa-f]+\)' +-- INTERFACE_LINK_LIBRARIES='::@\([Xx0-9A-Fa-f]+\);\$<\$:\$<1:foo;foo>>;\$<\$>:\$<1:foo;foo>>;::@' diff --git a/Tests/RunCMake/target_link_libraries/CMP0079-iface-OLD-stdout.txt b/Tests/RunCMake/target_link_libraries/CMP0079-iface-OLD-stdout.txt index e575e16..4eb06d9 100644 --- a/Tests/RunCMake/target_link_libraries/CMP0079-iface-OLD-stdout.txt +++ b/Tests/RunCMake/target_link_libraries/CMP0079-iface-OLD-stdout.txt @@ -1 +1 @@ --- INTERFACE_LINK_LIBRARIES='foo' +-- INTERFACE_LINK_LIBRARIES='\$<\$:\$<1:foo;foo>>;\$<\$>:\$<1:foo;foo>>' diff --git a/Tests/RunCMake/target_link_libraries/CMP0079-iface-WARN-stderr.txt b/Tests/RunCMake/target_link_libraries/CMP0079-iface-WARN-stderr.txt index 6dd7d30..4c09a1f 100644 --- a/Tests/RunCMake/target_link_libraries/CMP0079-iface-WARN-stderr.txt +++ b/Tests/RunCMake/target_link_libraries/CMP0079-iface-WARN-stderr.txt @@ -10,7 +10,25 @@ is not created in this directory. For compatibility with older versions of CMake, link library - foo + \$<1:foo;foo> + + will be looked up in the directory in which the target was created rather + than in this calling directory. +This warning is for project developers. Use -Wno-dev to suppress it. ++ +CMake Warning \(dev\) at CMP0079-iface/CMakeLists.txt:[0-9]+ \(target_link_libraries\): + Policy CMP0079 is not set: target_link_libraries allows use with targets in + other directories. Run "cmake --help-policy CMP0079" for policy details. + Use the cmake_policy command to set the policy and suppress this warning. + + Target + + top + + is not created in this directory. For compatibility with older versions of + CMake, link library + + \$<1:foo;foo> will be looked up in the directory in which the target was created rather than in this calling directory. diff --git a/Tests/RunCMake/target_link_libraries/CMP0079-iface-WARN-stdout.txt b/Tests/RunCMake/target_link_libraries/CMP0079-iface-WARN-stdout.txt index e575e16..4eb06d9 100644 --- a/Tests/RunCMake/target_link_libraries/CMP0079-iface-WARN-stdout.txt +++ b/Tests/RunCMake/target_link_libraries/CMP0079-iface-WARN-stdout.txt @@ -1 +1 @@ --- INTERFACE_LINK_LIBRARIES='foo' +-- INTERFACE_LINK_LIBRARIES='\$<\$:\$<1:foo;foo>>;\$<\$>:\$<1:foo;foo>>' diff --git a/Tests/RunCMake/target_link_libraries/CMP0079-iface/CMakeLists.txt b/Tests/RunCMake/target_link_libraries/CMP0079-iface/CMakeLists.txt index 4b15b32..e410607 100644 --- a/Tests/RunCMake/target_link_libraries/CMP0079-iface/CMakeLists.txt +++ b/Tests/RunCMake/target_link_libraries/CMP0079-iface/CMakeLists.txt @@ -1 +1 @@ -target_link_libraries(top INTERFACE foo) +target_link_libraries(top INTERFACE debug "$<1:foo;foo>" optimized "$<1:foo;foo>") diff --git a/Tests/RunCMake/target_link_libraries/CMP0079-link-NEW-bogus-stderr.txt b/Tests/RunCMake/target_link_libraries/CMP0079-link-NEW-bogus-stderr.txt index 8670403..9e38bec 100644 --- a/Tests/RunCMake/target_link_libraries/CMP0079-link-NEW-bogus-stderr.txt +++ b/Tests/RunCMake/target_link_libraries/CMP0079-link-NEW-bogus-stderr.txt @@ -1,5 +1,5 @@ ^CMake Error at CMP0079-link-NEW-bogus.cmake:[0-9]+ \(add_executable\): - Target "top" links to target "foo::@\(0xdeadbeef\)" but the target was not + Target "top" links to target "::@\(0xdeadbeef\)" but the target was not found. Perhaps a find_package\(\) call is missing for an IMPORTED target, or an ALIAS target is missing\? Call Stack \(most recent call first\): diff --git a/Tests/RunCMake/target_link_libraries/CMP0079-link-NEW-bogus.cmake b/Tests/RunCMake/target_link_libraries/CMP0079-link-NEW-bogus.cmake index ea9e071..8932521 100644 --- a/Tests/RunCMake/target_link_libraries/CMP0079-link-NEW-bogus.cmake +++ b/Tests/RunCMake/target_link_libraries/CMP0079-link-NEW-bogus.cmake @@ -3,4 +3,4 @@ cmake_policy(SET CMP0079 NEW) enable_language(C) add_executable(top empty.c) -set_property(TARGET top APPEND PROPERTY LINK_LIBRARIES "foo::@(0xdeadbeef)") +set_property(TARGET top APPEND PROPERTY LINK_LIBRARIES "::@(0xdeadbeef);foo;::@") diff --git a/Tests/RunCMake/target_link_libraries/CMP0079-link-NEW-stdout.txt b/Tests/RunCMake/target_link_libraries/CMP0079-link-NEW-stdout.txt index 3e8c7c6..fa5d4a3 100644 --- a/Tests/RunCMake/target_link_libraries/CMP0079-link-NEW-stdout.txt +++ b/Tests/RunCMake/target_link_libraries/CMP0079-link-NEW-stdout.txt @@ -1 +1 @@ --- LINK_LIBRARIES='foo::@\([Xx0-9A-Fa-f]+\)' +-- LINK_LIBRARIES='::@\([Xx0-9A-Fa-f]+\);foo;::@' -- cgit v0.12