Patch for solaris 2.x to provide nsswitch wins resolution

[Dan Kegel]

David Collier-Brown -- Customer Engineering wrote:
>>I needed to get wins resolution added on Solaris to nsswitch specifically
>>for gethostbyname.  The problem was that libnss_wins.so didn't include the
>>solaris wrapper and that libnss_winbind.so didn't include gethostbyname.
>>Here is a patch off of 2.2.7a that solves both issues (I'm not sure about
>>the #if SUN).
> 
>       The predefined macros fron a Sun SC-series compilers are
>                    __sun
>                    __unix
>                    __SUNPRO_C=0x500
>                    __sparc (SPARC)
>                    __sparcv9 (SPARC with -xarch=v9|v9a)
>                    __i386 (x86)
>                    __SVR4
> Not that those are double leading underscores.  From memory
> and a quick check on linux, GCC defines a partially overlapping 
> set including __linux and __sun.

To get a full list of possibly-predefined symbols on
a particular installation of gcc, you can do something
like
  tr ' ' '\012' < /usr/lib/gcc-lib/i386-redhat-linux/3.2/specs | grep D | sed 's/.*-D//' | sort -u

but it's better to do autoconf-style feature tests than
#if operatingsystem
style tests, isn't it?

- Dan