From: Michal Suchanek <hramrach@...>
Date: 2009-08-24T19:55:29+09:00
Subject: Re: OSX -flat_namespace issues show up in hitimes, nokogiri and 	amalgalite

Hello

Twolevel namespace is used for quite some time in fink. It 's one of
the remaining build system adjustments in recent ruby.

Until now there was nothing I could point at that breaks with flat
namespace but twolevel namespace is the recommended linking on OS X
since some version like 10.2 or 10.3 and it does not seem to break
anything.

Note the -Wl prefix which allows building extensions that use libtool.

Thanks

Michal

--- configure.in        2007-04-18 12:49:43.000000000 +0200
+++ configure.in        2007-04-19 14:23:04.000000000 +0200
@@ -1052,7 +1052,7 @@
        rhapsody*)      : ${LDSHARED='cc -dynamic -bundle -undefined suppress'}
                        : ${LDFLAGS=""}
                        rb_cv_dlopen=yes ;;
-       darwin*)        : ${LDSHARED='cc -dynamic -bundle -undefined
suppress -flat_namespace'}
+       darwin*)        : ${LDSHARED='cc -dynamic -bundle
-Wl,-undefined,dynamic_lookup -Wl,-multiply_defined,sup
press'}
                        : ${LDFLAGS=""}
                        : ${LIBPATHENV=DYLD_LIBRARY_PATH}
                        rb_cv_dlopen=yes ;;