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.

1 files changed, 15 insertions, 0 deletions

diff --git a/Tests/AliasTarget/commandgenerator.cpp b/Tests/AliasTarget/commandgenerator.cpp
new file mode 100644
index 0000000..23560a4
--- /dev/null
+++ b/Tests/AliasTarget/commandgenerator.cpp
@@ -0,0 +1,15 @@
+
+#include <fstream>
+
+#include "object.h"
+
+int main(int argc, char **argv)
+{
+  std::fstream fout;
+  fout.open("commandoutput.h", std::ios::out);
+  if (!fout)
+    return 1;
+  fout << "#define COMMANDOUTPUT_DEFINE\n";
+  fout.close();
+  return object();
+}