cmMakefile: Impose maximum recursion limit

In order to keep infinitely-recursive scripts from causing a stack
overflow in the CMake executable, CMake now imposes a maximum
recursion limit before issuing an error message. The limit can be
adjusted at runtime with CMAKE_MAXIMUM_RECURSION_DEPTH.

Fixes: #18694

1 files changed, 4 insertions, 0 deletions

diff --git a/Source/cmMakefile.h b/Source/cmMakefile.h
index e88bb0b..2bd44e2 100644
--- a/Source/cmMakefile.h
+++ b/Source/cmMakefile.h
@@ -870,6 +870,9 @@ public:
                               const char* sourceFilename) const;
   bool IsProjectFile(const char* filename) const;
 
+  int GetRecursionDepth() const;
+  void SetRecursionDepth(int recursionDepth);
+
 protected:
   // add link libraries and directories to the target
   void AddGlobalLinkInformation(cmTarget& target);
@@ -930,6 +933,7 @@ protected:
 private:
   cmStateSnapshot StateSnapshot;
   cmListFileBacktrace Backtrace;
+  int RecursionDepth;
 
   void ReadListFile(cmListFile const& listFile,
                     const std::string& filenametoread);