From: Mike <mghall@...>
Date: 2003-07-25T23:39:35+09:00
Subject: Re: ruby 1.8.0 preview4 (Bug in ext/openssl/extconf.rb)

Brian McCallister  wrote:

>ossl_config.c:147: bad macro argument list
>ossl_config.c:147: bad macro argument list

Hey, I recognize that!  Saw it just last night!
Here's my write-up and fix for it.


Ruby 1.8.0 preview4
Mac OS X 10.2.3

Bug in 'ext/opensll' extension:
It incorrectly configures HAVE_VA_ARGS_MACRO,
causing the build to fail with errors from 'cpp'.

In 'extconf.rb', a test defines a macro for __VA_ARGS__,
but doesn't invoke the macro, so it never gets expanded  or evaluated. 
Adding some dummy code to actually use the macro
is needed to test for __VA_ARGS__.   (I think.  Yes?)

Anyway, with a slight change, it configures without HAVE_VA_ARGS_MACRO, 
and the extension (and everything else) builds to completion.

A one-line patch for 'extconf.rb' follows.

105c105
< if try_cpp("#define FOO(a, ...) foo(a, ##__VA_ARGS__)\n  int x() { FOO(1,2); }
")
---
> if try_cpp("#define FOO(a, ...) foo(a, ##__VA_ARGS__)\n")


(Now, to figure out how to tell 'tcltklib' about '-framework Tcl'...
and the same with 'readline'... I think I still have the notes from last time!)