Suppress -Wundef warnings on arm64 macOS and Windows

ruby / fiddle

A libffi wrapper for Ruby.

BSD 2-Clause "Simplified" License

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Suppress -Wundef warnings on arm64 macOS and Windows #134

Closed nobu closed 1 year ago

nobu commented 1 year ago

In file included from ../../../../ext/fiddle/fiddle.h:46:
/opt/local/include/ffi.h:477:5: warning: 'FFI_GO_CLOSURES' is not defined, evaluates to 0 [-Wundef]
    ^

c.f. https://github.com/libffi/libffi/pull/796