target_link_libraries: Add PUBLIC/PRIVATE/INTERFACE keyword signature

Add a new signature to help populate INTERFACE_LINK_LIBRARIES and
LINK_LIBRARIES cleanly in a single call.  Add policy CMP0023 to control
whether the keyword signatures can be mixed with uses of the plain
signatures on the same target.

1 files changed, 19 insertions, 0 deletions

diff --git a/Tests/CMakeCommands/target_link_libraries/newsignature1.cpp b/Tests/CMakeCommands/target_link_libraries/newsignature1.cpp
new file mode 100644
index 0000000..d1321a1
--- /dev/null
+++ b/Tests/CMakeCommands/target_link_libraries/newsignature1.cpp
@@ -0,0 +1,19 @@
+
+#include "depB.h"
+#include "depC.h"
+#include "depIfaceOnly.h"
+
+#include "subdirlib.h"
+
+int main(int, char **)
+{
+  DepA a;
+  DepB b;
+  DepC c;
+
+  DepIfaceOnly iface_only;
+
+  SubDirLibObject sd;
+
+  return a.foo() + b.foo() + c.foo() + iface_only.foo() + sd.foo();
+}