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Add the ALIAS target concept for libraries and executables.

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* The ALIAS name must match a validity regex.
* Executables and libraries may be aliased.
* An ALIAS acts immutable. It can not be used as the lhs
  of target_link_libraries or other commands.
* An ALIAS can be used with add_custom_command, add_custom_target,
  and add_test in the same way regular targets can.
* The target of an ALIAS can be retrieved with the ALIASED_TARGET
  target property.
* An ALIAS does not appear in the generated buildsystem. It
  is kept separate from cmMakefile::Targets for that reason.
* A target may have multiple aliases.
* An ALIAS target may not itself have an alias.
* An IMPORTED target may not have an alias.
* An ALIAS may not be exported or imported.
This commit is contained in:
Stephen Kelly
2013-08-02 15:21:00 +02:00
parent b341bf2178
commit 370bf55415
89 changed files with 740 additions and 19 deletions
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Source/cmAddExecutableCommand.cxx
+72
View File
@@ -30,6 +30,7 @@ bool cmAddExecutableCommand
bool excludeFromAll = false;
bool importTarget = false;
bool importGlobal = false;
bool isAlias = false;
while ( s != args.end() )
{
if (*s == "WIN32")
@@ -57,6 +58,11 @@ bool cmAddExecutableCommand
++s;
importGlobal = true;
}
else if(*s == "ALIAS")
{
++s;
isAlias = true;
}
else
{
break;
@@ -83,6 +89,72 @@ bool cmAddExecutableCommand
}
return false;
}
if (isAlias)
{
if(!cmGeneratorExpression::IsValidTargetName(exename.c_str()))
{
this->SetError(("Invalid name for ALIAS: " + exename).c_str());
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)
{
cmOStringStream e;
e << "ALIAS requires exactly one target argument.";
this->SetError(e.str().c_str());
return false;
}
const char *aliasedName = s->c_str();
if(this->Makefile->IsAlias(aliasedName))
{
cmOStringStream e;
e << "cannot create ALIAS target \"" << exename
<< "\" because target \"" << aliasedName << "\" is itself an ALIAS.";
this->SetError(e.str().c_str());
return false;
}
cmTarget *aliasedTarget =
this->Makefile->FindTargetToUse(aliasedName, true);
if(!aliasedTarget)
{
cmOStringStream e;
e << "cannot create ALIAS target \"" << exename
<< "\" because target \"" << aliasedName << "\" does not already "
"exist.";
this->SetError(e.str().c_str());
return false;
}
cmTarget::TargetType type = aliasedTarget->GetType();
if(type != cmTarget::EXECUTABLE)
{
cmOStringStream e;
e << "cannot create ALIAS target \"" << exename
<< "\" because target \"" << aliasedName << "\" is not an "
"executable.";
this->SetError(e.str().c_str());
return false;
}
if(aliasedTarget->IsImported())
{
cmOStringStream e;
e << "cannot create ALIAS target \"" << exename
<< "\" because target \"" << aliasedName << "\" is IMPORTED.";
this->SetError(e.str().c_str());
return false;
}
this->Makefile->AddAlias(exename.c_str(), aliasedTarget);
return true;
}
// Handle imported target creation.
if(importTarget)