1 files changed, 24 insertions, 0 deletions
diff --git a/share/cmake-3.18/Modules/CheckVariableExists.c b/share/cmake-3.18/Modules/CheckVariableExists.c
new file mode 100644
index 0000000..d68afb4
--- /dev/null
+++ b/share/cmake-3.18/Modules/CheckVariableExists.c
@@ -0,0 +1,24 @@
+#ifdef CHECK_VARIABLE_EXISTS
+
+extern int CHECK_VARIABLE_EXISTS;
+
+#  ifdef __CLASSIC_C__
+int main()
+{
+  int ac;
+  char* av[];
+#  else
+int main(int ac, char* av[])
+{
+#  endif
+  if (ac > 1000) {
+    return *av[0];
+  }
+  return CHECK_VARIABLE_EXISTS;
+}
+
+#else /* CHECK_VARIABLE_EXISTS */
+
+#  error "CHECK_VARIABLE_EXISTS has to specify the variable"
+
+#endif /* CHECK_VARIABLE_EXISTS */