From: Ryan Davis <ryand-ruby@...>
Date: 2010-06-03T16:38:41+09:00
Subject: [ruby-core:30569] 1.9.2 build flag issues

from rbconfig in 1.9.1:

  CONFIG["LIBRUBY_LDSHARED"] = "cc -dynamiclib -undefined suppress -flat_namespace"

from 1.9.2:

  CONFIG["LIBRUBY_LDSHARED"] = "$(CC) -dynamiclib"

This leads to a lot of undefined symbols when building modules. I'm no autoconf expert so I don't feel confident in a fix for something that looks very deliberately changed. It LOOKS like the fix should be:

> Index: configure.in
> ===================================================================
> --- configure.in	(revision 28133)
> +++ configure.in	(working copy)
> @@ -1805,7 +1805,7 @@
>  	[rhapsody*], [	: ${LDSHARED='$(CC) -dynamic -bundle -undefined suppress'}
>  			: ${LDFLAGS=""}
>  			rb_cv_dlopen=yes],
> -	[darwin*], [	: ${LDSHARED='$(CC) -dynamic -bundle'}
> +	[darwin*], [	: ${LDSHARED='$(CC) -dynamic -bundle -undefined suppress'}
>  			: ${DLDFLAGS="${linker_flag}-undefined${linker_flag:+,}dynamic_lookup ${linker_flag}-multiply_defined${linker_flag:+,}suppress ${linker_flag}-flat_namespace"}
>  			: ${LDFLAGS=""}
>  			: ${LIBPATHENV=DYLD_LIBRARY_PATH}

but that causes syntax errors when configure is run. How extending a string can cause syntax errors in a shell script is beyond me.

I really need "-undefined suppress" in the rbconfig flag values for all of my module builds to succeed. Help?