cmExperimental: support forwarding associated variables to `try_compile`

Other variables may be needed to make experimental features actually
work. List them with the experimental flag.

1 files changed, 2 insertions, 0 deletions

diff --git a/Source/cmExperimental.h b/Source/cmExperimental.h
index 0768146..c958ab6 100644
--- a/Source/cmExperimental.h
+++ b/Source/cmExperimental.h
@@ -6,6 +6,7 @@
 #include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
+#include <vector>
 
 class cmMakefile;
 
@@ -33,6 +34,7 @@ public:
     std::string const Uuid;
     std::string const Variable;
     std::string const Description;
+    std::vector<std::string> const TryCompileVariables;
     TryCompileCondition const ForwardThroughTryCompile;
     bool Warned;
   };