Simplify around `USE_YJIT` macro (#6240)

* Simplify around `USE_YJIT` macro

- Use `USE_YJIT` macro only instead of `YJIT_BUILD`.
- An intermediate macro `YJIT_SUPPORTED_P` is no longer used.

* Bail out if YJIT is enabled on unsupported platforms

1 files changed, 1 insertions, 1 deletions

diff --git a/vm.c b/vm.c
index 3bba390e7c..4b1a30e7ca 100644
--- a/vm.c
+++ b/vm.c
@@ -3938,7 +3938,7 @@ Init_vm_objects(void)
 }
 
 /* Stub for builtin function when not building YJIT units*/
-#if !YJIT_BUILD
+#if !USE_YJIT
 void Init_builtin_yjit(void) {}
 #endif