https://git.ruby-lang.org/ruby.git/commit/?id=95f387f61a

From 95f387f61a4a4ea92635da760b7de5b1e09bb84e Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Wed, 4 Mar 2020 18:41:47 +0900
Subject: [ruby/fiddle] ffi_closure_free is available in the bundled libffi


diff --git a/ext/fiddle/extconf.rb b/ext/fiddle/extconf.rb
index 915afb9..2d0e188 100644
--- a/ext/fiddle/extconf.rb
+++ b/ext/fiddle/extconf.rb
@@ -135,7 +135,6 @@ elsif have_header "windows.h" https://github.com/ruby/ruby/blob/trunk/ext/fiddle/extconf.rb#L135
 end
 
 have_const('FFI_STDCALL', ffi_header)
-have_func('ffi_closure_alloc', ffi_header)
 
 config = File.read(RbConfig.expand(File.join($arch_hdrdir, "ruby/config.h")))
 types = {"SIZE_T"=>"SSIZE_T", "PTRDIFF_T"=>nil, "INTPTR_T"=>nil}
@@ -154,6 +153,9 @@ end https://github.com/ruby/ruby/blob/trunk/ext/fiddle/extconf.rb#L153
 if libffi
   $LOCAL_LIBS.prepend("./#{libffi.a} ").strip! # to exts.mk
   $INCFLAGS.gsub!(/-I#{libffi.dir}/, '-I$(LIBFFI_DIR)')
+  $defs << "-DUSE_FFI_CLOSURE_ALLOC=1"
+else
+  have_func('ffi_closure_alloc', ffi_header)
 end
 $INCFLAGS << " -I$(top_srcdir)"
 create_makefile 'fiddle' do |conf|
-- 
cgit v0.10.2


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