ENH: Test fake circular dependency case

A recent change fixed a case in which CMake incorrectly diagnosed a
circular dependency involving a non-linkable executable target.  This
adds a test for that case.

1 files changed, 2 insertions, 0 deletions

diff --git a/Tests/Dependency/Case4/bar.c b/Tests/Dependency/Case4/bar.c
new file mode 100644
index 0000000..d0bb0c4
--- /dev/null
+++ b/Tests/Dependency/Case4/bar.c
@@ -0,0 +1,2 @@
+extern int foo();
+int main() { return foo(); }