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Re: libstdc++-v3 configury problem
- From: Benjamin Kosnik <bkoz at redhat dot com>
- To: Jakub Jelinek <jakub at redhat dot com>
- Cc: gcc at gcc dot gnu dot org, libstdc++ at gcc dot gnu dot org
- Date: Fri, 9 Jul 2004 12:51:06 -0500
- Subject: Re: libstdc++-v3 configury problem
- Organization: Red Hat / Chicago
- References: <20040709133658.GW21264@devserv.devel.redhat.com>
>Several GCC targets provide long double != double support which depends on
>a compiler switch.
>Unfortunately, this clashes with libstdc++-v3 determining the availability
>/non-availability of math *l functions at configure time.
>Depending on -mlong-double-{64,128}, -m{32,64} or how is the option called on a
>particular arch, it may be or may be not available in headers.
>E.g. sparc64-linux has most of the *l functions for 64-bit programs, for
>32-bit programs it doesn't unless -mlong-double-128 is used.
Maybe something like _GLIBCXX_USE_LONG_DOUBLE_DYNAMIC.
-benjamin