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Message-ID: <20130724222003.57719e51@sibserver.ru>
Date: Wed, 24 Jul 2013 22:20:03 +0800
From: orc <orc@...server.ru>
To: musl@...ts.openwall.com
Subject: Re: Missing symbols for supporting glibc-built
libstdc++.so.6
On Wed, 24 Jul 2013 03:55:34 -0400
Rich Felker <dalias@...ifal.cx> wrote:
> As of now, C++ programs/libraries linked against glibc should work
> with musl as long as a musl-built version of libstdc++.so is available
> in place of the glibc-built one. The only remaining type that does not
> match glibc, in the full C++ name-mangling sense of matching, is
> fd_mask. (This type is not really intended to be public, and glibc
> will probably change it to match musl's definition after 2.18 is
> released.)
>
> However, the glibc-built libstdc++.so.6 still has a few unsatisfied
> symbol references:
>
> * __-prefixed versions of the *_l locale functions.
>
> * Some nonstandard *_l locale functions.
>
> * All the "xstat" functions (glibc's pre-symbol-versioning hack for
> ABI stability of stat()).
>
> * The gettext interfaces.
>
> Of these, all but gettext are fairly trivial to add. I'm still
> undecided on whether libc should have an implementation of gettext,
> but I am confident the size could be made trivial.
>
> The advantage of getting the glibc-built libstdc++ working with musl
> is that the musl-gcc wrapper could be used to build C++ programs too,
> not just C. This is particularly important now that new GCC versions
> are using C++ code; without the ability to use the existing libstdc++,
> an earlier GCC version must first be built to bootstrap a musl-based
> compiler.
>
> Rich
About a year ago while experimenting with musl desktop, various
binary blobs I unfortunately tied to (you should remember
short discuss about nvidia blob compatibility) I tried to use my host
libstdc++.so with musl linker and that failed because of gnu "unique
symbol" extension. Did you encountered same problem here? If so, is
it solved now?
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