Export: allow exporting of additional properties

This change introduces an additional property that may be set on a
target to allow additional properties to be exported. Normally only a
limited number of properties are exported.

Additional properties may be exported by simply setting the
`EXPORT_PROPERTIES` property on a target that is exported.

1 files changed, 7 insertions, 0 deletions

diff --git a/Tests/RunCMake/export/empty.cpp b/Tests/RunCMake/export/empty.cpp
new file mode 100644
index 0000000..11ec041
--- /dev/null
+++ b/Tests/RunCMake/export/empty.cpp
@@ -0,0 +1,7 @@
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+  int empty()
+{
+  return 0;
+}