CMake/Source/cmNinjaNormalTargetGenerato...

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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2011 Peter Collingbourne <peter@pcc.me.uk>
Copyright 2011 Nicolas Despres <nicolas.despres@gmail.com>
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#include "cmNinjaNormalTargetGenerator.h"
#include "cmLocalNinjaGenerator.h"
#include "cmGlobalNinjaGenerator.h"
#include "cmSourceFile.h"
#include "cmGeneratedFileStream.h"
#include "cmMakefile.h"
#include <assert.h>
#include <algorithm>
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#ifndef _WIN32
#include <unistd.h>
#endif
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cmNinjaNormalTargetGenerator::
cmNinjaNormalTargetGenerator(cmTarget* target)
: cmNinjaTargetGenerator(target)
, TargetNameOut()
, TargetNameSO()
, TargetNameReal()
, TargetNameImport()
, TargetNamePDB()
{
this->TargetLinkLanguage = target->GetLinkerLanguage(this->GetConfigName());
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if (target->GetType() == cmTarget::EXECUTABLE)
target->GetExecutableNames(this->TargetNameOut,
this->TargetNameReal,
this->TargetNameImport,
this->TargetNamePDB,
GetLocalGenerator()->GetConfigName());
else
target->GetLibraryNames(this->TargetNameOut,
this->TargetNameSO,
this->TargetNameReal,
this->TargetNameImport,
this->TargetNamePDB,
GetLocalGenerator()->GetConfigName());
if(target->GetType() != cmTarget::OBJECT_LIBRARY)
{
// on Windows the output dir is already needed at compile time
// ensure the directory exists (OutDir test)
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EnsureDirectoryExists(target->GetDirectory(this->GetConfigName()));
}
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}
cmNinjaNormalTargetGenerator::~cmNinjaNormalTargetGenerator()
{
}
void cmNinjaNormalTargetGenerator::Generate()
{
if (!this->TargetLinkLanguage) {
cmSystemTools::Error("CMake can not determine linker language for target:",
this->GetTarget()->GetName());
return;
}
// Write the rules for each language.
this->WriteLanguagesRules();
// Write the build statements
this->WriteObjectBuildStatements();
if(this->GetTarget()->GetType() == cmTarget::OBJECT_LIBRARY)
{
this->WriteObjectLibStatement();
}
else
{
this->WriteLinkRule(false); // write rule without rspfile support
this->WriteLinkRule(true); // write rule with rspfile support
this->WriteLinkStatement();
}
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}
void cmNinjaNormalTargetGenerator::WriteLanguagesRules()
{
#ifdef NINJA_GEN_VERBOSE_FILES
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cmGlobalNinjaGenerator::WriteDivider(this->GetRulesFileStream());
this->GetRulesFileStream()
<< "# Rules for each languages for "
<< cmTarget::GetTargetTypeName(this->GetTarget()->GetType())
<< " target "
<< this->GetTargetName()
<< "\n\n";
#endif
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std::set<cmStdString> languages;
this->GetTarget()->GetLanguages(languages);
for(std::set<cmStdString>::const_iterator l = languages.begin();
l != languages.end();
++l)
this->WriteLanguageRules(*l);
}
const char *cmNinjaNormalTargetGenerator::GetVisibleTypeName() const
{
switch (this->GetTarget()->GetType()) {
case cmTarget::STATIC_LIBRARY:
return "static library";
case cmTarget::SHARED_LIBRARY:
return "shared library";
case cmTarget::MODULE_LIBRARY:
return "shared module";
case cmTarget::EXECUTABLE:
return "executable";
default:
return 0;
}
}
std::string
cmNinjaNormalTargetGenerator
::LanguageLinkerRule() const
{
return std::string(this->TargetLinkLanguage)
+ "_"
+ cmTarget::GetTargetTypeName(this->GetTarget()->GetType())
+ "_LINKER";
}
void
cmNinjaNormalTargetGenerator
::WriteLinkRule(bool useResponseFile)
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{
cmTarget::TargetType targetType = this->GetTarget()->GetType();
std::string ruleName = this->LanguageLinkerRule();
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if (useResponseFile)
ruleName += "_RSPFILE";
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// Select whether to use a response file for objects.
std::string rspfile;
std::string rspcontent;
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if (!this->GetGlobalGenerator()->HasRule(ruleName)) {
cmLocalGenerator::RuleVariables vars;
vars.RuleLauncher = "RULE_LAUNCH_LINK";
vars.CMTarget = this->GetTarget();
vars.Language = this->TargetLinkLanguage;
std::string responseFlag;
if (!useResponseFile) {
vars.Objects = "$in";
vars.LinkLibraries = "$LINK_LIBRARIES";
} else {
// handle response file
std::string cmakeLinkVar = std::string("CMAKE_") +
this->TargetLinkLanguage + "_RESPONSE_FILE_LINK_FLAG";
const char * flag = GetMakefile()->GetDefinition(cmakeLinkVar.c_str());
if(flag) {
responseFlag = flag;
} else {
responseFlag = "@";
}
rspfile = "$out.rsp";
responseFlag += rspfile;
rspcontent = "$in $LINK_LIBRARIES";
vars.Objects = responseFlag.c_str();
vars.LinkLibraries = "";
}
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vars.ObjectDir = "$OBJECT_DIR";
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vars.Target = "$out";
Support building shared libraries or modules without soname (#13155) Add a boolean target property NO_SONAME which may be used to disable soname for the specified shared library or module even if the platform supports it. This property should be useful for private shared libraries or various plugins which live in private directories and have not been designed to be found or loaded globally. Replace references to <CMAKE_SHARED_LIBRARY_SONAME_${LANG}_FLAG> and hard-coded -install_name flags with a conditional <SONAME_FLAG> which is expanded to the value of the CMAKE_SHARED_LIBRARY_SONAME_${LANG}_FLAG definition as long as soname supports is enabled for the target in question. Keep expanding CMAKE_SHARED_LIBRARY_SONAME_${LANG}_FLAG in rules in case third party projects still use it. Such projects would not yet use NO_SONAME so the adjacent <TARGET_SONAME> will always be expanded. Make <TARGET_INSTALLNAME_DIR> NO_SONAME aware as well. Since -install_name is soname on OS X, this should not be a problem if this variable is expanded only if soname is enabled. The Ninja generator performs rule variable substitution only once globally per rule to put its own placeholders. Final substitution is performed by ninja at build time. Therefore we cannot conditionally replace the soname placeholders on a per-target basis. Rather than omitting $SONAME from rules.ninja, simply do not write its contents for targets which have NO_SONAME. Since 3 variables are affected by NO_SONAME ($SONAME, $SONAME_FLAG, $INSTALLNAME_DIR), set them only if soname is enabled.
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vars.SONameFlag = "$SONAME_FLAG";
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vars.TargetSOName = "$SONAME";
vars.TargetInstallNameDir = "$INSTALLNAME_DIR";
vars.TargetPDB = "$TARGET_PDB";
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// Setup the target version.
std::string targetVersionMajor;
std::string targetVersionMinor;
{
cmOStringStream majorStream;
cmOStringStream minorStream;
int major;
int minor;
this->GetTarget()->GetTargetVersion(major, minor);
majorStream << major;
minorStream << minor;
targetVersionMajor = majorStream.str();
targetVersionMinor = minorStream.str();
}
vars.TargetVersionMajor = targetVersionMajor.c_str();
vars.TargetVersionMinor = targetVersionMinor.c_str();
vars.Flags = "$FLAGS";
vars.LinkFlags = "$LINK_FLAGS";
std::string langFlags;
if (targetType != cmTarget::EXECUTABLE) {
this->GetLocalGenerator()->AddLanguageFlags(langFlags,
this->TargetLinkLanguage,
this->GetConfigName());
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langFlags += " $ARCH_FLAGS";
vars.LanguageCompileFlags = langFlags.c_str();
}
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// Rule for linking library/executable.
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std::vector<std::string> linkCmds = this->ComputeLinkCmd();
for(std::vector<std::string>::iterator i = linkCmds.begin();
i != linkCmds.end();
++i)
{
this->GetLocalGenerator()->ExpandRuleVariables(*i, vars);
}
linkCmds.insert(linkCmds.begin(), "$PRE_LINK");
linkCmds.push_back("$POST_BUILD");
std::string linkCmd =
this->GetLocalGenerator()->BuildCommandLine(linkCmds);
// Write the linker rule with response file if needed.
cmOStringStream comment;
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comment << "Rule for linking " << this->TargetLinkLanguage << " "
<< this->GetVisibleTypeName() << ".";
cmOStringStream description;
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description << "Linking " << this->TargetLinkLanguage << " "
<< this->GetVisibleTypeName() << " $out";
this->GetGlobalGenerator()->AddRule(ruleName,
linkCmd,
description.str(),
comment.str(),
/*depfile*/ "",
rspfile,
rspcontent);
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}
if (this->TargetNameOut != this->TargetNameReal) {
std::string cmakeCommand =
this->GetLocalGenerator()->ConvertToOutputFormat(
this->GetMakefile()->GetRequiredDefinition("CMAKE_COMMAND"),
cmLocalGenerator::SHELL);
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if (targetType == cmTarget::EXECUTABLE)
this->GetGlobalGenerator()->AddRule("CMAKE_SYMLINK_EXECUTABLE",
cmakeCommand +
" -E cmake_symlink_executable"
" $in $out && $POST_BUILD",
"Creating executable symlink $out",
"Rule for creating executable symlink.");
else
this->GetGlobalGenerator()->AddRule("CMAKE_SYMLINK_LIBRARY",
cmakeCommand +
" -E cmake_symlink_library"
" $in $SONAME $out && $POST_BUILD",
"Creating library symlink $out",
"Rule for creating library symlink.");
}
}
std::vector<std::string>
cmNinjaNormalTargetGenerator
::ComputeLinkCmd()
{
std::vector<std::string> linkCmds;
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cmTarget::TargetType targetType = this->GetTarget()->GetType();
switch (targetType) {
case cmTarget::STATIC_LIBRARY: {
// Check if you have a non archive way to create the static library.
{
std::string linkCmdVar = "CMAKE_";
linkCmdVar += this->TargetLinkLanguage;
linkCmdVar += "_CREATE_STATIC_LIBRARY";
if (const char *linkCmd =
this->GetMakefile()->GetDefinition(linkCmdVar.c_str()))
{
cmSystemTools::ExpandListArgument(linkCmd, linkCmds);
return linkCmds;
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}
}
// We have archive link commands set. First, delete the existing archive.
std::string cmakeCommand =
this->GetLocalGenerator()->ConvertToOutputFormat(
this->GetMakefile()->GetRequiredDefinition("CMAKE_COMMAND"),
cmLocalGenerator::SHELL);
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linkCmds.push_back(cmakeCommand + " -E remove $out");
// TODO: Use ARCHIVE_APPEND for archives over a certain size.
{
std::string linkCmdVar = "CMAKE_";
linkCmdVar += this->TargetLinkLanguage;
linkCmdVar += "_ARCHIVE_CREATE";
const char *linkCmd =
this->GetMakefile()->GetRequiredDefinition(linkCmdVar.c_str());
cmSystemTools::ExpandListArgument(linkCmd, linkCmds);
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}
{
std::string linkCmdVar = "CMAKE_";
linkCmdVar += this->TargetLinkLanguage;
linkCmdVar += "_ARCHIVE_FINISH";
const char *linkCmd =
this->GetMakefile()->GetRequiredDefinition(linkCmdVar.c_str());
cmSystemTools::ExpandListArgument(linkCmd, linkCmds);
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}
return linkCmds;
}
case cmTarget::SHARED_LIBRARY:
case cmTarget::MODULE_LIBRARY:
case cmTarget::EXECUTABLE: {
std::string linkCmdVar = "CMAKE_";
linkCmdVar += this->TargetLinkLanguage;
switch (targetType) {
case cmTarget::SHARED_LIBRARY:
linkCmdVar += "_CREATE_SHARED_LIBRARY";
break;
case cmTarget::MODULE_LIBRARY:
linkCmdVar += "_CREATE_SHARED_MODULE";
break;
case cmTarget::EXECUTABLE:
linkCmdVar += "_LINK_EXECUTABLE";
break;
default:
assert(0 && "Unexpected target type");
}
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const char *linkCmd =
this->GetMakefile()->GetRequiredDefinition(linkCmdVar.c_str());
cmSystemTools::ExpandListArgument(linkCmd, linkCmds);
return linkCmds;
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}
default:
assert(0 && "Unexpected target type");
}
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return std::vector<std::string>();
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}
void cmNinjaNormalTargetGenerator::WriteLinkStatement()
{
cmTarget::TargetType targetType = this->GetTarget()->GetType();
// Write comments.
cmGlobalNinjaGenerator::WriteDivider(this->GetBuildFileStream());
this->GetBuildFileStream()
<< "# Link build statements for "
<< cmTarget::GetTargetTypeName(targetType)
<< " target "
<< this->GetTargetName()
<< "\n\n";
cmNinjaDeps emptyDeps;
cmNinjaVars vars;
std::string targetOutput = ConvertToNinjaPath(
this->GetTarget()->GetFullPath(this->GetConfigName()).c_str());
std::string targetOutputReal = ConvertToNinjaPath(
this->GetTarget()->GetFullPath(this->GetConfigName(),
/*implib=*/false,
/*realpath=*/true).c_str());
std::string targetOutputImplib = ConvertToNinjaPath(
this->GetTarget()->GetFullPath(this->GetConfigName(),
/*implib=*/true).c_str());
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// Compute the comment.
cmOStringStream comment;
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comment << "Link the " << this->GetVisibleTypeName() << " "
<< targetOutputReal;
// Compute outputs.
cmNinjaDeps outputs;
outputs.push_back(targetOutputReal);
// Compute specific libraries to link with.
cmNinjaDeps explicitDeps = this->GetObjects();
cmNinjaDeps implicitDeps = this->ComputeLinkDeps();
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this->GetLocalGenerator()->GetTargetFlags(vars["LINK_LIBRARIES"],
vars["FLAGS"],
vars["LINK_FLAGS"],
*this->GetTarget());
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this->AddModuleDefinitionFlag(vars["LINK_FLAGS"]);
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// Compute architecture specific link flags. Yes, these go into a different
// variable for executables, probably due to a mistake made when duplicating
// code between the Makefile executable and library generators.
std::string flags = (targetType == cmTarget::EXECUTABLE
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? vars["FLAGS"]
: vars["ARCH_FLAGS"]);
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this->GetLocalGenerator()->AddArchitectureFlags(flags,
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this->GetTarget(),
this->TargetLinkLanguage,
this->GetConfigName());
if (targetType == cmTarget::EXECUTABLE) {
vars["FLAGS"] = flags;
} else {
vars["ARCH_FLAGS"] = flags;
}
Support building shared libraries or modules without soname (#13155) Add a boolean target property NO_SONAME which may be used to disable soname for the specified shared library or module even if the platform supports it. This property should be useful for private shared libraries or various plugins which live in private directories and have not been designed to be found or loaded globally. Replace references to <CMAKE_SHARED_LIBRARY_SONAME_${LANG}_FLAG> and hard-coded -install_name flags with a conditional <SONAME_FLAG> which is expanded to the value of the CMAKE_SHARED_LIBRARY_SONAME_${LANG}_FLAG definition as long as soname supports is enabled for the target in question. Keep expanding CMAKE_SHARED_LIBRARY_SONAME_${LANG}_FLAG in rules in case third party projects still use it. Such projects would not yet use NO_SONAME so the adjacent <TARGET_SONAME> will always be expanded. Make <TARGET_INSTALLNAME_DIR> NO_SONAME aware as well. Since -install_name is soname on OS X, this should not be a problem if this variable is expanded only if soname is enabled. The Ninja generator performs rule variable substitution only once globally per rule to put its own placeholders. Final substitution is performed by ninja at build time. Therefore we cannot conditionally replace the soname placeholders on a per-target basis. Rather than omitting $SONAME from rules.ninja, simply do not write its contents for targets which have NO_SONAME. Since 3 variables are affected by NO_SONAME ($SONAME, $SONAME_FLAG, $INSTALLNAME_DIR), set them only if soname is enabled.
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if (this->GetTarget()->HasSOName(this->GetConfigName())) {
vars["SONAME_FLAG"] =
this->GetMakefile()->GetSONameFlag(this->TargetLinkLanguage);
vars["SONAME"] = this->TargetNameSO;
if (targetType == cmTarget::SHARED_LIBRARY) {
std::string install_name_dir = this->GetTarget()
->GetInstallNameDirForBuildTree(this->GetConfigName());
if (!install_name_dir.empty()) {
vars["INSTALLNAME_DIR"] =
this->GetLocalGenerator()->Convert(install_name_dir.c_str(),
cmLocalGenerator::NONE,
cmLocalGenerator::SHELL, false);
}
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}
}
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std::string path;
if (!this->TargetNameImport.empty()) {
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path = this->GetLocalGenerator()->ConvertToOutputFormat(
targetOutputImplib.c_str(), cmLocalGenerator::SHELL);
vars["TARGET_IMPLIB"] = path;
EnsureParentDirectoryExists(path);
}
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// TODO move to GetTargetPDB
cmMakefile* mf = this->GetMakefile();
if (mf->GetDefinition("MSVC_C_ARCHITECTURE_ID") ||
mf->GetDefinition("MSVC_CXX_ARCHITECTURE_ID"))
{
path = this->GetTargetPDB();
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vars["TARGET_PDB"] = this->GetLocalGenerator()->ConvertToOutputFormat(
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ConvertToNinjaPath(path.c_str()).c_str(),
cmLocalGenerator::SHELL);
EnsureParentDirectoryExists(path);
}
if (mf->IsOn("CMAKE_COMPILER_IS_MINGW"))
{
path = GetTarget()->GetSupportDirectory();
vars["OBJECT_DIR"] = ConvertToNinjaPath(path.c_str());
EnsureDirectoryExists(path);
// ar.exe can't handle backslashes in rsp files (implictly used by gcc)
std::string& linkLibraries = vars["LINK_LIBRARIES"];
std::replace(linkLibraries.begin(), linkLibraries.end(), '\\', '/');
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}
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std::vector<cmCustomCommand> *cmdLists[3] = {
&this->GetTarget()->GetPreBuildCommands(),
&this->GetTarget()->GetPreLinkCommands(),
&this->GetTarget()->GetPostBuildCommands()
};
std::vector<std::string> preLinkCmdLines, postBuildCmdLines;
std::vector<std::string> *cmdLineLists[3] = {
&preLinkCmdLines,
&preLinkCmdLines,
&postBuildCmdLines
};
for (unsigned i = 0; i != 3; ++i) {
for (std::vector<cmCustomCommand>::const_iterator
ci = cmdLists[i]->begin();
ci != cmdLists[i]->end(); ++ci) {
this->GetLocalGenerator()->AppendCustomCommandLines(&*ci,
*cmdLineLists[i]);
}
}
// If we have any PRE_LINK commands, we need to go back to HOME_OUTPUT for
// the link commands.
if (!preLinkCmdLines.empty()) {
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path = this->GetLocalGenerator()->ConvertToOutputFormat(
this->GetMakefile()->GetHomeOutputDirectory(),
cmLocalGenerator::SHELL);
preLinkCmdLines.push_back("cd " + path);
}
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vars["PRE_LINK"] =
this->GetLocalGenerator()->BuildCommandLine(preLinkCmdLines);
std::string postBuildCmdLine =
this->GetLocalGenerator()->BuildCommandLine(postBuildCmdLines);
cmNinjaVars symlinkVars;
if (targetOutput == targetOutputReal) {
vars["POST_BUILD"] = postBuildCmdLine;
} else {
vars["POST_BUILD"] = ":";
symlinkVars["POST_BUILD"] = postBuildCmdLine;
}
int linkRuleLength = this->GetGlobalGenerator()->
GetRuleCmdLength(this->LanguageLinkerRule());
#ifdef _WIN32
int commandLineLengthLimit = 8000 - linkRuleLength;
#elif defined(__linux) || defined(__APPLE__)
// for instance ARG_MAX is 2096152 on Ubuntu or 262144 on Mac
int commandLineLengthLimit = sysconf(_SC_ARG_MAX) - linkRuleLength - 1000;
#else
int commandLineLengthLimit = -1;
#endif
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// Write the build statement for this target.
cmGlobalNinjaGenerator::WriteBuild(this->GetBuildFileStream(),
comment.str(),
this->LanguageLinkerRule(),
outputs,
explicitDeps,
implicitDeps,
emptyDeps,
vars,
commandLineLengthLimit);
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if (targetOutput != targetOutputReal) {
if (targetType == cmTarget::EXECUTABLE) {
cmGlobalNinjaGenerator::WriteBuild(this->GetBuildFileStream(),
"Create executable symlink " + targetOutput,
"CMAKE_SYMLINK_EXECUTABLE",
cmNinjaDeps(1, targetOutput),
cmNinjaDeps(1, targetOutputReal),
emptyDeps,
emptyDeps,
symlinkVars);
} else {
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cmNinjaDeps symlinks;
const std::string soName = this->GetTargetFilePath(this->TargetNameSO);
// If one link has to be created.
if (targetOutputReal == soName || targetOutput == soName) {
symlinkVars["SONAME"] = soName;
} else {
symlinkVars["SONAME"] = "";
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symlinks.push_back(soName);
}
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symlinks.push_back(targetOutput);
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cmGlobalNinjaGenerator::WriteBuild(this->GetBuildFileStream(),
"Create library symlink " + targetOutput,
"CMAKE_SYMLINK_LIBRARY",
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symlinks,
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cmNinjaDeps(1, targetOutputReal),
emptyDeps,
emptyDeps,
symlinkVars);
}
}
if (!this->TargetNameImport.empty()) {
// Since using multiple outputs would mess up the $out variable, use an
// alias for the import library.
cmGlobalNinjaGenerator::WritePhonyBuild(this->GetBuildFileStream(),
"Alias for import library.",
cmNinjaDeps(1, targetOutputImplib),
cmNinjaDeps(1, targetOutputReal));
}
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// Add aliases for the file name and the target name.
this->GetGlobalGenerator()->AddTargetAlias(this->TargetNameOut,
this->GetTarget());
this->GetGlobalGenerator()->AddTargetAlias(this->GetTargetName(),
this->GetTarget());
}
//----------------------------------------------------------------------------
void cmNinjaNormalTargetGenerator::WriteObjectLibStatement()
{
// Write a phony output that depends on all object files.
cmNinjaDeps outputs;
this->GetLocalGenerator()->AppendTargetOutputs(this->GetTarget(), outputs);
cmNinjaDeps depends = this->GetObjects();
cmGlobalNinjaGenerator::WritePhonyBuild(this->GetBuildFileStream(),
"Object library "
+ this->GetTargetName(),
outputs,
depends);
// Add aliases for the target name.
this->GetGlobalGenerator()->AddTargetAlias(this->GetTargetName(),
this->GetTarget());
}