From: pc000@... (PaulC)
Date: 2001-10-22T07:48:44+09:00
Subject: [ruby-talk:22913] Re: Building Ruby on MacOS 10.1

will_conant@hotmail.com (Will Conant) wrote in message news:<9ffbff09.0110211018.1753b0f@posting.google.com>...
> Now, however, I can't build anything in the ext directory. They all fail with that
> "-two_levelnamespace" error.
> 

This is caused by the two-level namespaced in the OSX 10.1 linker (see
http://developer.apple.com/techpubs/macosx/ReleaseNotes/TwoLevelNamespaces.html)

There is a small patch attached to fix this (adds -flat_namespace to
LDSHARED) - also
you need to get the dlcompat library from
http://fink.sourceforge.net/files/dlcompat-20010123.tar.gz to support
dynamic loading of libraries

Paul



*** configure   Sun Oct 21 18:22:33 2001
--- configure.orig      Sun Oct 21 18:22:21 2001
***************
*** 4733,4739 ****
                        LDFLAGS=""
                        DLDFLAGS="$ARCH_FLAG"
                        rb_cv_dlopen=yes ;;
!       darwin*)        LDSHARED='cc -dynamic -bundle -undefined
suppress -flat_namespace'
                        LDFLAGS=""
                        DLDFLAGS="$ARCH_FLAG"
                        rb_cv_dlopen=yes ;;
--- 4733,4739 ----
                        LDFLAGS=""
                        DLDFLAGS="$ARCH_FLAG"
                        rb_cv_dlopen=yes ;;
!       darwin*)        LDSHARED='cc -dynamic -bundle -undefined
suppress'
                        LDFLAGS=""
                        DLDFLAGS="$ARCH_FLAG"
                        rb_cv_dlopen=yes ;;