| // Copyright 2019 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "gn/ninja_c_binary_target_writer.h" |
| |
| #include <stddef.h> |
| #include <string.h> |
| |
| #include <cstring> |
| #include <set> |
| #include <sstream> |
| #include <unordered_set> |
| |
| #include "base/strings/string_util.h" |
| #include "gn/c_substitution_type.h" |
| #include "gn/config_values_extractors.h" |
| #include "gn/deps_iterator.h" |
| #include "gn/err.h" |
| #include "gn/escape.h" |
| #include "gn/filesystem_utils.h" |
| #include "gn/general_tool.h" |
| #include "gn/ninja_target_command_util.h" |
| #include "gn/ninja_utils.h" |
| #include "gn/scheduler.h" |
| #include "gn/settings.h" |
| #include "gn/string_utils.h" |
| #include "gn/substitution_writer.h" |
| #include "gn/target.h" |
| |
| namespace { |
| |
| // Returns the proper escape options for writing compiler and linker flags. |
| EscapeOptions GetFlagOptions() { |
| EscapeOptions opts; |
| opts.mode = ESCAPE_NINJA_COMMAND; |
| return opts; |
| } |
| |
| // Returns the language-specific lang recognized by gcc’s -x flag for |
| // precompiled header files. |
| const char* GetPCHLangForToolType(const char* name) { |
| if (name == CTool::kCToolCc) |
| return "c-header"; |
| if (name == CTool::kCToolCxx) |
| return "c++-header"; |
| if (name == CTool::kCToolObjC) |
| return "objective-c-header"; |
| if (name == CTool::kCToolObjCxx) |
| return "objective-c++-header"; |
| NOTREACHED() << "Not a valid PCH tool type: " << name; |
| return ""; |
| } |
| |
| } // namespace |
| |
| NinjaCBinaryTargetWriter::NinjaCBinaryTargetWriter(const Target* target, |
| std::ostream& out) |
| : NinjaBinaryTargetWriter(target, out), |
| tool_(target->toolchain()->GetToolForTargetFinalOutputAsC(target)) {} |
| |
| NinjaCBinaryTargetWriter::~NinjaCBinaryTargetWriter() = default; |
| |
| void NinjaCBinaryTargetWriter::Run() { |
| WriteCompilerVars(); |
| |
| size_t num_stamp_uses = target_->sources().size(); |
| |
| std::vector<OutputFile> input_deps = WriteInputsStampAndGetDep( |
| num_stamp_uses); |
| |
| // The input dependencies will be an order-only dependency. This will cause |
| // Ninja to make sure the inputs are up to date before compiling this source, |
| // but changes in the inputs deps won't cause the file to be recompiled. |
| // |
| // This is important to prevent changes in unrelated actions that are |
| // upstream of this target from causing everything to be recompiled. |
| // |
| // Why can we get away with this rather than using implicit deps ("|", which |
| // will force rebuilds when the inputs change)? For source code, the |
| // computed dependencies of all headers will be computed by the compiler, |
| // which will cause source rebuilds if any "real" upstream dependencies |
| // change. |
| // |
| // If a .cc file is generated by an input dependency, Ninja will see the |
| // input to the build rule doesn't exist, and that it is an output from a |
| // previous step, and build the previous step first. This is a "real" |
| // dependency and doesn't need | or || to express. |
| // |
| // The only case where this rule matters is for the first build where no .d |
| // files exist, and Ninja doesn't know what that source file depends on. In |
| // this case it's sufficient to ensure that the upstream dependencies are |
| // built first. This is exactly what Ninja's order-only dependencies |
| // expresses. |
| // |
| // The order only deps are referenced by each source file compile, |
| // but also by PCH compiles. The latter are annoying to count, so omit |
| // them here. This means that binary targets with a single source file |
| // that also use PCH files won't have a stamp file even though having |
| // one would make output ninja file size a bit lower. That's ok, binary |
| // targets with a single source are rare. |
| std::vector<OutputFile> order_only_deps = WriteInputDepsStampAndGetDep( |
| std::vector<const Target*>(), num_stamp_uses); |
| |
| // For GCC builds, the .gch files are not object files, but still need to be |
| // added as explicit dependencies below. The .gch output files are placed in |
| // |pch_other_files|. This is to prevent linking against them. |
| std::vector<OutputFile> pch_obj_files; |
| std::vector<OutputFile> pch_other_files; |
| WritePCHCommands(input_deps, order_only_deps, &pch_obj_files, |
| &pch_other_files); |
| std::vector<OutputFile>* pch_files = |
| !pch_obj_files.empty() ? &pch_obj_files : &pch_other_files; |
| |
| // Treat all pch output files as explicit dependencies of all |
| // compiles that support them. Some notes: |
| // |
| // - On Windows, the .pch file is the input to the compile, not the |
| // precompiled header's corresponding object file that we're using here. |
| // But Ninja's depslog doesn't support multiple outputs from the |
| // precompiled header compile step (it outputs both the .pch file and a |
| // corresponding .obj file). So we consistently list the .obj file and the |
| // .pch file we really need comes along with it. |
| // |
| // - GCC .gch files are not object files, therefore they are not added to the |
| // object file list. |
| std::vector<OutputFile> obj_files; |
| std::vector<SourceFile> other_files; |
| WriteSources(*pch_files, input_deps, order_only_deps, &obj_files, |
| &other_files); |
| |
| // Link all MSVC pch object files. The vector will be empty on GCC toolchains. |
| obj_files.insert(obj_files.end(), pch_obj_files.begin(), pch_obj_files.end()); |
| if (!CheckForDuplicateObjectFiles(obj_files)) |
| return; |
| |
| if (target_->output_type() == Target::SOURCE_SET) { |
| WriteSourceSetStamp(obj_files); |
| #ifndef NDEBUG |
| // Verify that the function that separately computes a source set's object |
| // files match the object files just computed. |
| UniqueVector<OutputFile> computed_obj; |
| AddSourceSetFiles(target_, &computed_obj); |
| DCHECK_EQ(obj_files.size(), computed_obj.size()); |
| for (const auto& obj : obj_files) |
| DCHECK_NE(static_cast<size_t>(-1), computed_obj.IndexOf(obj)); |
| #endif |
| } else { |
| WriteLinkerStuff(obj_files, other_files, input_deps); |
| } |
| } |
| |
| void NinjaCBinaryTargetWriter::WriteCompilerVars() { |
| const SubstitutionBits& subst = target_->toolchain()->substitution_bits(); |
| |
| // Defines. |
| if (subst.used.count(&CSubstitutionDefines)) { |
| out_ << CSubstitutionDefines.ninja_name << " ="; |
| RecursiveTargetConfigToStream<std::string>(target_, &ConfigValues::defines, |
| DefineWriter(), out_); |
| out_ << std::endl; |
| } |
| |
| // Framework search path. |
| if (subst.used.count(&CSubstitutionFrameworkDirs)) { |
| const Tool* tool = target_->toolchain()->GetTool(CTool::kCToolLink); |
| |
| out_ << CSubstitutionFrameworkDirs.ninja_name << " ="; |
| PathOutput framework_dirs_output( |
| path_output_.current_dir(), |
| settings_->build_settings()->root_path_utf8(), ESCAPE_NINJA_COMMAND); |
| RecursiveTargetConfigToStream<SourceDir>( |
| target_, &ConfigValues::framework_dirs, |
| FrameworkDirsWriter(framework_dirs_output, |
| tool->framework_dir_switch()), |
| out_); |
| out_ << std::endl; |
| } |
| |
| // Include directories. |
| if (subst.used.count(&CSubstitutionIncludeDirs)) { |
| out_ << CSubstitutionIncludeDirs.ninja_name << " ="; |
| PathOutput include_path_output( |
| path_output_.current_dir(), |
| settings_->build_settings()->root_path_utf8(), ESCAPE_NINJA_COMMAND); |
| RecursiveTargetConfigToStream<SourceDir>( |
| target_, &ConfigValues::include_dirs, |
| IncludeWriter(include_path_output), out_); |
| out_ << std::endl; |
| } |
| |
| bool has_precompiled_headers = |
| target_->config_values().has_precompiled_headers(); |
| |
| EscapeOptions opts = GetFlagOptions(); |
| if (target_->source_types_used().Get(SourceFile::SOURCE_S) || |
| target_->source_types_used().Get(SourceFile::SOURCE_ASM)) { |
| WriteOneFlag(target_, &CSubstitutionAsmFlags, false, Tool::kToolNone, |
| &ConfigValues::asmflags, opts, path_output_, out_); |
| } |
| if (target_->source_types_used().Get(SourceFile::SOURCE_C) || |
| target_->source_types_used().Get(SourceFile::SOURCE_CPP) || |
| target_->source_types_used().Get(SourceFile::SOURCE_M) || |
| target_->source_types_used().Get(SourceFile::SOURCE_MM)) { |
| WriteOneFlag(target_, &CSubstitutionCFlags, false, Tool::kToolNone, |
| &ConfigValues::cflags, opts, path_output_, out_); |
| } |
| if (target_->source_types_used().Get(SourceFile::SOURCE_C)) { |
| WriteOneFlag(target_, &CSubstitutionCFlagsC, has_precompiled_headers, |
| CTool::kCToolCc, &ConfigValues::cflags_c, opts, path_output_, |
| out_); |
| } |
| if (target_->source_types_used().Get(SourceFile::SOURCE_CPP)) { |
| WriteOneFlag(target_, &CSubstitutionCFlagsCc, has_precompiled_headers, |
| CTool::kCToolCxx, &ConfigValues::cflags_cc, opts, path_output_, |
| out_); |
| } |
| if (target_->source_types_used().Get(SourceFile::SOURCE_M)) { |
| WriteOneFlag(target_, &CSubstitutionCFlagsObjC, has_precompiled_headers, |
| CTool::kCToolObjC, &ConfigValues::cflags_objc, opts, |
| path_output_, out_); |
| } |
| if (target_->source_types_used().Get(SourceFile::SOURCE_MM)) { |
| WriteOneFlag(target_, &CSubstitutionCFlagsObjCc, has_precompiled_headers, |
| CTool::kCToolObjCxx, &ConfigValues::cflags_objcc, opts, |
| path_output_, out_); |
| } |
| |
| WriteSharedVars(subst); |
| } |
| |
| void NinjaCBinaryTargetWriter::WritePCHCommands( |
| const std::vector<OutputFile>& input_deps, |
| const std::vector<OutputFile>& order_only_deps, |
| std::vector<OutputFile>* object_files, |
| std::vector<OutputFile>* other_files) { |
| if (!target_->config_values().has_precompiled_headers()) |
| return; |
| |
| const CTool* tool_c = target_->toolchain()->GetToolAsC(CTool::kCToolCc); |
| if (tool_c && tool_c->precompiled_header_type() != CTool::PCH_NONE && |
| target_->source_types_used().Get(SourceFile::SOURCE_C)) { |
| WritePCHCommand(&CSubstitutionCFlagsC, CTool::kCToolCc, |
| tool_c->precompiled_header_type(), input_deps, |
| order_only_deps, object_files, other_files); |
| } |
| const CTool* tool_cxx = target_->toolchain()->GetToolAsC(CTool::kCToolCxx); |
| if (tool_cxx && tool_cxx->precompiled_header_type() != CTool::PCH_NONE && |
| target_->source_types_used().Get(SourceFile::SOURCE_CPP)) { |
| WritePCHCommand(&CSubstitutionCFlagsCc, CTool::kCToolCxx, |
| tool_cxx->precompiled_header_type(), input_deps, |
| order_only_deps, object_files, other_files); |
| } |
| |
| const CTool* tool_objc = target_->toolchain()->GetToolAsC(CTool::kCToolObjC); |
| if (tool_objc && tool_objc->precompiled_header_type() == CTool::PCH_GCC && |
| target_->source_types_used().Get(SourceFile::SOURCE_M)) { |
| WritePCHCommand(&CSubstitutionCFlagsObjC, CTool::kCToolObjC, |
| tool_objc->precompiled_header_type(), input_deps, |
| order_only_deps, object_files, other_files); |
| } |
| |
| const CTool* tool_objcxx = |
| target_->toolchain()->GetToolAsC(CTool::kCToolObjCxx); |
| if (tool_objcxx && tool_objcxx->precompiled_header_type() == CTool::PCH_GCC && |
| target_->source_types_used().Get(SourceFile::SOURCE_MM)) { |
| WritePCHCommand(&CSubstitutionCFlagsObjCc, CTool::kCToolObjCxx, |
| tool_objcxx->precompiled_header_type(), input_deps, |
| order_only_deps, object_files, other_files); |
| } |
| } |
| |
| void NinjaCBinaryTargetWriter::WritePCHCommand( |
| const Substitution* flag_type, |
| const char* tool_name, |
| CTool::PrecompiledHeaderType header_type, |
| const std::vector<OutputFile>& input_deps, |
| const std::vector<OutputFile>& order_only_deps, |
| std::vector<OutputFile>* object_files, |
| std::vector<OutputFile>* other_files) { |
| switch (header_type) { |
| case CTool::PCH_MSVC: |
| WriteWindowsPCHCommand(flag_type, tool_name, input_deps, order_only_deps, |
| object_files); |
| break; |
| case CTool::PCH_GCC: |
| WriteGCCPCHCommand(flag_type, tool_name, input_deps, order_only_deps, |
| other_files); |
| break; |
| case CTool::PCH_NONE: |
| NOTREACHED() << "Cannot write a PCH command with no PCH header type"; |
| break; |
| } |
| } |
| |
| void NinjaCBinaryTargetWriter::WriteGCCPCHCommand( |
| const Substitution* flag_type, |
| const char* tool_name, |
| const std::vector<OutputFile>& input_deps, |
| const std::vector<OutputFile>& order_only_deps, |
| std::vector<OutputFile>* gch_files) { |
| // Compute the pch output file (it will be language-specific). |
| std::vector<OutputFile> outputs; |
| GetPCHOutputFiles(target_, tool_name, &outputs); |
| if (outputs.empty()) |
| return; |
| |
| gch_files->insert(gch_files->end(), outputs.begin(), outputs.end()); |
| |
| std::vector<OutputFile> extra_deps; |
| std::copy(input_deps.begin(), input_deps.end(), |
| std::back_inserter(extra_deps)); |
| |
| // Build line to compile the file. |
| WriteCompilerBuildLine({target_->config_values().precompiled_source()}, |
| extra_deps, order_only_deps, tool_name, outputs); |
| |
| // This build line needs a custom language-specific flags value. Rule-specific |
| // variables are just indented underneath the rule line. |
| out_ << " " << flag_type->ninja_name << " ="; |
| |
| // Each substitution flag is overwritten in the target rule to replace the |
| // implicitly generated -include flag with the -x <header lang> flag required |
| // for .gch targets. |
| EscapeOptions opts = GetFlagOptions(); |
| if (tool_name == CTool::kCToolCc) { |
| RecursiveTargetConfigStringsToStream(target_, &ConfigValues::cflags_c, opts, |
| out_); |
| } else if (tool_name == CTool::kCToolCxx) { |
| RecursiveTargetConfigStringsToStream(target_, &ConfigValues::cflags_cc, |
| opts, out_); |
| } else if (tool_name == CTool::kCToolObjC) { |
| RecursiveTargetConfigStringsToStream(target_, &ConfigValues::cflags_objc, |
| opts, out_); |
| } else if (tool_name == CTool::kCToolObjCxx) { |
| RecursiveTargetConfigStringsToStream(target_, &ConfigValues::cflags_objcc, |
| opts, out_); |
| } |
| |
| // Append the command to specify the language of the .gch file. |
| out_ << " -x " << GetPCHLangForToolType(tool_name); |
| |
| // Write two blank lines to help separate the PCH build lines from the |
| // regular source build lines. |
| out_ << std::endl << std::endl; |
| } |
| |
| void NinjaCBinaryTargetWriter::WriteWindowsPCHCommand( |
| const Substitution* flag_type, |
| const char* tool_name, |
| const std::vector<OutputFile>& input_deps, |
| const std::vector<OutputFile>& order_only_deps, |
| std::vector<OutputFile>* object_files) { |
| // Compute the pch output file (it will be language-specific). |
| std::vector<OutputFile> outputs; |
| GetPCHOutputFiles(target_, tool_name, &outputs); |
| if (outputs.empty()) |
| return; |
| |
| object_files->insert(object_files->end(), outputs.begin(), outputs.end()); |
| |
| std::vector<OutputFile> extra_deps; |
| std::copy(input_deps.begin(), input_deps.end(), |
| std::back_inserter(extra_deps)); |
| |
| // Build line to compile the file. |
| WriteCompilerBuildLine({target_->config_values().precompiled_source()}, |
| extra_deps, order_only_deps, tool_name, outputs); |
| |
| // This build line needs a custom language-specific flags value. Rule-specific |
| // variables are just indented underneath the rule line. |
| out_ << " " << flag_type->ninja_name << " ="; |
| |
| // Append the command to generate the .pch file. |
| // This adds the value to the existing flag instead of overwriting it. |
| out_ << " ${" << flag_type->ninja_name << "}"; |
| out_ << " /Yc" << target_->config_values().precompiled_header(); |
| |
| // Write two blank lines to help separate the PCH build lines from the |
| // regular source build lines. |
| out_ << std::endl << std::endl; |
| } |
| |
| void NinjaCBinaryTargetWriter::WriteSources( |
| const std::vector<OutputFile>& pch_deps, |
| const std::vector<OutputFile>& input_deps, |
| const std::vector<OutputFile>& order_only_deps, |
| std::vector<OutputFile>* object_files, |
| std::vector<SourceFile>* other_files) { |
| object_files->reserve(object_files->size() + target_->sources().size()); |
| |
| std::vector<OutputFile> tool_outputs; // Prevent reallocation in loop. |
| std::vector<OutputFile> deps; |
| for (const auto& source : target_->sources()) { |
| // Clear the vector but maintain the max capacity to prevent reallocations. |
| deps.resize(0); |
| const char* tool_name = Tool::kToolNone; |
| if (!target_->GetOutputFilesForSource(source, &tool_name, &tool_outputs)) { |
| if (source.type() == SourceFile::SOURCE_DEF) |
| other_files->push_back(source); |
| continue; // No output for this source. |
| } |
| |
| |
| std::copy(input_deps.begin(), input_deps.end(), std::back_inserter(deps)); |
| |
| if (tool_name != Tool::kToolNone) { |
| // Only include PCH deps that correspond to the tool type, for instance, |
| // do not specify target_name.precompile.cc.obj (a CXX PCH file) as a dep |
| // for the output of a C tool type. |
| // |
| // This makes the assumption that pch_deps only contains pch output files |
| // with the naming scheme specified in GetWindowsPCHObjectExtension or |
| // GetGCCPCHOutputExtension. |
| const CTool* tool = target_->toolchain()->GetToolAsC(tool_name); |
| if (tool->precompiled_header_type() != CTool::PCH_NONE) { |
| for (const auto& dep : pch_deps) { |
| const std::string& output_value = dep.value(); |
| size_t extension_offset = FindExtensionOffset(output_value); |
| if (extension_offset == std::string::npos) |
| continue; |
| std::string output_extension; |
| if (tool->precompiled_header_type() == CTool::PCH_MSVC) { |
| output_extension = GetWindowsPCHObjectExtension( |
| tool_name, output_value.substr(extension_offset - 1)); |
| } else if (tool->precompiled_header_type() == CTool::PCH_GCC) { |
| output_extension = GetGCCPCHOutputExtension(tool_name); |
| } |
| if (output_value.compare( |
| output_value.size() - output_extension.size(), |
| output_extension.size(), output_extension) == 0) { |
| deps.push_back(dep); |
| } |
| } |
| } |
| WriteCompilerBuildLine({source}, deps, order_only_deps, tool_name, |
| tool_outputs); |
| } |
| |
| // It's theoretically possible for a compiler to produce more than one |
| // output, but we'll only link to the first output. |
| object_files->push_back(tool_outputs[0]); |
| } |
| out_ << std::endl; |
| } |
| |
| void NinjaCBinaryTargetWriter::WriteLinkerStuff( |
| const std::vector<OutputFile>& object_files, |
| const std::vector<SourceFile>& other_files, |
| const std::vector<OutputFile>& input_deps) { |
| std::vector<OutputFile> output_files; |
| SubstitutionWriter::ApplyListToLinkerAsOutputFile( |
| target_, tool_, tool_->outputs(), &output_files); |
| |
| out_ << "build"; |
| path_output_.WriteFiles(out_, output_files); |
| |
| out_ << ": " << rule_prefix_ |
| << Tool::GetToolTypeForTargetFinalOutput(target_); |
| |
| UniqueVector<OutputFile> extra_object_files; |
| UniqueVector<const Target*> linkable_deps; |
| UniqueVector<const Target*> non_linkable_deps; |
| UniqueVector<const Target*> framework_deps; |
| GetDeps(&extra_object_files, &linkable_deps, &non_linkable_deps, |
| &framework_deps); |
| |
| // Object files. |
| path_output_.WriteFiles(out_, object_files); |
| path_output_.WriteFiles(out_, extra_object_files); |
| |
| // Dependencies. |
| std::vector<OutputFile> implicit_deps; |
| std::vector<OutputFile> solibs; |
| for (const Target* cur : linkable_deps) { |
| // All linkable deps should have a link output file. |
| DCHECK(!cur->link_output_file().value().empty()) |
| << "No link output file for " |
| << target_->label().GetUserVisibleName(false); |
| |
| if (cur->output_type() == Target::RUST_LIBRARY || |
| cur->output_type() == Target::RUST_PROC_MACRO) |
| continue; |
| |
| if (cur->dependency_output_file().value() != |
| cur->link_output_file().value()) { |
| // This is a shared library with separate link and deps files. Save for |
| // later. |
| implicit_deps.push_back(cur->dependency_output_file()); |
| solibs.push_back(cur->link_output_file()); |
| } else { |
| // Normal case, just link to this target. |
| out_ << " "; |
| path_output_.WriteFile(out_, cur->link_output_file()); |
| } |
| } |
| |
| const SourceFile* optional_def_file = nullptr; |
| if (!other_files.empty()) { |
| for (const SourceFile& src_file : other_files) { |
| if (src_file.type() == SourceFile::SOURCE_DEF) { |
| optional_def_file = &src_file; |
| implicit_deps.push_back( |
| OutputFile(settings_->build_settings(), src_file)); |
| break; // Only one def file is allowed. |
| } |
| } |
| } |
| |
| // Libraries specified by paths. |
| const OrderedSet<LibFile>& libs = target_->all_libs(); |
| for (size_t i = 0; i < libs.size(); i++) { |
| if (libs[i].is_source_file()) { |
| implicit_deps.push_back( |
| OutputFile(settings_->build_settings(), libs[i].source_file())); |
| } |
| } |
| |
| // If any target creates a framework bundle, then treat it as an implicit |
| // dependency via the .stamp file. This is a pessimisation as it is not |
| // always necessary to relink the current target if one of the framework |
| // is regenerated, but it ensure that if one of the framework API changes, |
| // any dependent target will relink it (see crbug.com/1037607). |
| if (!framework_deps.empty()) { |
| for (const Target* dep : framework_deps) { |
| implicit_deps.push_back(dep->dependency_output_file()); |
| } |
| } |
| |
| // The input dependency is only needed if there are no object files, as the |
| // dependency is normally provided transitively by the source files. |
| std::copy(input_deps.begin(), input_deps.end(), |
| std::back_inserter(implicit_deps)); |
| |
| // Any C++ target which depends on a Rust .rlib has to depend on its |
| // entire tree of transitive rlibs. |
| std::vector<OutputFile> transitive_rustlibs; |
| if (target_->IsFinal()) { |
| for (const auto* dep : |
| target_->rust_values().transitive_libs().GetOrdered()) { |
| if (dep->output_type() == Target::RUST_LIBRARY) { |
| transitive_rustlibs.push_back(dep->dependency_output_file()); |
| implicit_deps.push_back(dep->dependency_output_file()); |
| } |
| } |
| } |
| |
| // Append implicit dependencies collected above. |
| if (!implicit_deps.empty()) { |
| out_ << " |"; |
| path_output_.WriteFiles(out_, implicit_deps); |
| } |
| |
| // Append data dependencies as order-only dependencies. |
| // |
| // This will include data dependencies and input dependencies (like when |
| // this target depends on an action). Having the data dependencies in this |
| // list ensures that the data is available at runtime when the user builds |
| // this target. |
| // |
| // The action dependencies are not strictly necessary in this case. They |
| // should also have been collected via the input deps stamp that each source |
| // file has for an order-only dependency, and since this target depends on |
| // the sources, there is already an implicit order-only dependency. However, |
| // it's extra work to separate these out and there's no disadvantage to |
| // listing them again. |
| WriteOrderOnlyDependencies(non_linkable_deps); |
| |
| // End of the link "build" line. |
| out_ << std::endl; |
| |
| // The remaining things go in the inner scope of the link line. |
| if (target_->output_type() == Target::EXECUTABLE || |
| target_->output_type() == Target::SHARED_LIBRARY || |
| target_->output_type() == Target::LOADABLE_MODULE) { |
| out_ << " ldflags ="; |
| WriteLinkerFlags(out_, tool_, optional_def_file); |
| out_ << std::endl; |
| out_ << " libs ="; |
| WriteLibs(out_, tool_); |
| out_ << std::endl; |
| out_ << " frameworks ="; |
| WriteFrameworks(out_, tool_); |
| out_ << std::endl; |
| } else if (target_->output_type() == Target::STATIC_LIBRARY) { |
| out_ << " arflags ="; |
| RecursiveTargetConfigStringsToStream(target_, &ConfigValues::arflags, |
| GetFlagOptions(), out_); |
| out_ << std::endl; |
| } |
| WriteOutputSubstitutions(); |
| WriteLibsList("solibs", solibs); |
| WriteLibsList("rlibs", transitive_rustlibs); |
| } |
| |
| void NinjaCBinaryTargetWriter::WriteOutputSubstitutions() { |
| out_ << " output_extension = " |
| << SubstitutionWriter::GetLinkerSubstitution( |
| target_, tool_, &SubstitutionOutputExtension); |
| out_ << std::endl; |
| out_ << " output_dir = " |
| << SubstitutionWriter::GetLinkerSubstitution(target_, tool_, |
| &SubstitutionOutputDir); |
| out_ << std::endl; |
| } |
| |
| void NinjaCBinaryTargetWriter::WriteLibsList( |
| const std::string& label, |
| const std::vector<OutputFile>& libs) { |
| if (libs.empty()) |
| return; |
| |
| out_ << " " << label << " ="; |
| path_output_.WriteFiles(out_, libs); |
| out_ << std::endl; |
| } |
| |
| void NinjaCBinaryTargetWriter::WriteOrderOnlyDependencies( |
| const UniqueVector<const Target*>& non_linkable_deps) { |
| if (!non_linkable_deps.empty()) { |
| out_ << " ||"; |
| |
| // Non-linkable targets. |
| for (auto* non_linkable_dep : non_linkable_deps) { |
| out_ << " "; |
| path_output_.WriteFile(out_, non_linkable_dep->dependency_output_file()); |
| } |
| } |
| } |
| |
| bool NinjaCBinaryTargetWriter::CheckForDuplicateObjectFiles( |
| const std::vector<OutputFile>& files) const { |
| std::unordered_set<std::string> set; |
| for (const auto& file : files) { |
| if (!set.insert(file.value()).second) { |
| Err err( |
| target_->defined_from(), "Duplicate object file", |
| "The target " + target_->label().GetUserVisibleName(false) + |
| "\ngenerates two object files with the same name:\n " + |
| file.value() + |
| "\n" |
| "\n" |
| "It could be you accidentally have a file listed twice in the\n" |
| "sources. Or, depending on how your toolchain maps sources to\n" |
| "object files, two source files with the same name in different\n" |
| "directories could map to the same object file.\n" |
| "\n" |
| "In the latter case, either rename one of the files or move one " |
| "of\n" |
| "the sources to a separate source_set to avoid them both being " |
| "in\n" |
| "the same target."); |
| g_scheduler->FailWithError(err); |
| return false; |
| } |
| } |
| return true; |
| } |
