Since we build TCI with FFI (commit 22f15579fa1 "tcg: Build ffi data
structures for helpers") we get on Darwin:
In file included from ../../tcg/tci.c:22:
In file included from include/tcg/helper-info.h:13:
/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/ffi/ffi.h:483:5:
warning: 'FFI_GO_CLOSURES' is not defined, evaluates to 0 [-Wundef]
483 | #if FFI_GO_CLOSURES
| ^
1 warning generated.
This was fixed in upstream libffi in 2023, but not backported to MacOSX.
Simply disable the warning locally.
Reported-by: Philippe Mathieu-Daudé <[email protected]>
Signed-off-by: Richard Henderson <[email protected]>
---
include/tcg/helper-info.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/include/tcg/helper-info.h b/include/tcg/helper-info.h
index 909fe73afa..49a27e4eae 100644
--- a/include/tcg/helper-info.h
+++ b/include/tcg/helper-info.h
@@ -10,7 +10,19 @@
#define TCG_HELPER_INFO_H
#ifdef CONFIG_TCG_INTERPRETER
+/*
+ * MacOSX 15 uses an old version of libffi which contains
+ * #if FFI_GO_CLOSURES
+ * but does not define that in <ffitarget.h>, included from <ffi.h>.
+ * This was fixed upstream with
+ * https://github.com/libffi/libffi/commit/c23e9a1c
+ * We don't care about go closures one way or the other;
+ * just suppress the warning.
+ */
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wundef"
#include <ffi.h>
+#pragma GCC diagnostic pop
#endif
#include "tcg-target-reg-bits.h"
--
2.43.0
