Stephen Kelly 370bf55415 Add the ALIAS target concept for libraries and executables.
* 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.
2013-08-02 15:21:00 +02:00

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C++

#ifndef FOO_DEFINE
#error Expected FOO_DEFINE
#endif
#ifndef BAR_DEFINE
#error Expected Bar_DEFINE
#endif
#include "commandoutput.h"
#ifndef COMMANDOUTPUT_DEFINE
#error Expected COMMANDOUTPUT_DEFINE
#endif
#include "targetoutput.h"
#ifndef TARGETOUTPUT_DEFINE
#error Expected TARGETOUTPUT_DEFINE
#endif
#ifdef _WIN32
__declspec(dllexport)
#endif
int bar()
{
return 0;
}