* ext/socket/extconf.rb: CMSG_ macros are broken on 64bit darwin,

because of use of __DARWIN_ALIGN.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27530 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Wed Apr 28 17:14:10 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* ext/socket/extconf.rb: CMSG_ macros are broken on 64bit darwin,
+	  because of use of __DARWIN_ALIGN.
+
 Wed Apr 28 16:44:58 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* include/ruby/ruby.h ({RSTRING,RSTRUCT,RBIGNUM}_LENINT): check long

ext/socket/extconf.rb

@@ -110,7 +110,8 @@ end
 have_header("netinet/tcp.h") if /cygwin/ !~ RUBY_PLATFORM # for cygwin 1.1.5
 have_header("netinet/udp.h")
 
-if have_func("sendmsg") | have_func("recvmsg")
+if (have_func("sendmsg") | have_func("recvmsg")) && /64-darwin/ !~ RUBY_PLATFORM
+  # CMSG_ macros are broken on 64bit darwin, because of use of __DARWIN_ALIGN.
   have_struct_member('struct msghdr', 'msg_control', ['sys/types.h', 'sys/socket.h'])
   have_struct_member('struct msghdr', 'msg_accrights', ['sys/types.h', 'sys/socket.h'])
 end