Hi All,

When discussing the option of using gcc as the default compiler for software on 
OI, the lack of IEEE 1003.1-2001 support in libstdc++ was cited as a reason for 
sticking with Sun Studio. There's a bug open on the GCC bug tracker for it here:

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41495

As you can see someone has got a mostly working patch available, which 
potentially could be finished to address this. I posted a comment on the bug 
tracker, and someone responded they could be interested in working on it. I'd 
appreciate it if others also interested in this could provide feedback on the 
bug, especially Jonathan Wakely's question to which I don't know the answer:

"Does OpenIndiana support the new POSIX.1-2008 APIs, e.g. wctype_l and 
towupper_l?"

I also had a look at the --enable-clocale option:

http://gcc.gnu.org/cgi-bin/cvsweb.cgi/~checkout~/gcc/libstdc++-v3/docs/html/configopts.html?rev=1.21.2.10.4.3.2.2&content-type=text/html

"--enable-clocale=OPTION
Select a target-specific underlying locale package. The choices are 
'ieee_1003.1-2001' to specify an X/Open, Standard Unix (IEEE Std. 1003.1-2001) 
model based on langinfo/iconv/catgets, 'gnu' to specify a model based on 
functionality from the GNU C library (langinfo/iconv/gettext) (from glibc, the 
GNU C library), or 'generic' to use a generic "C" abstraction which consists of 
"C" locale info.

As part of the configuration process, the "C" library is probed both for 
sufficient vintage, and installed locale data. If either of these elements are 
not present, the C++ locale model default to 'generic.' On glibc-based systems 
of version 2.2.5 and above with installed locale files, 'gnu' is automatically 
selected."

Does anyone know if the GNU option is viable? It specifies it takes 
functionality from glibc, which obviously we don't have, but then cites 
langinfo/iconv/gettext, the latter 2 of which we do have.

And lastly, could someone confirm whether the Apache stdcxx C++ library is a 
viable full alternative to libstdc++ that we could use to avoid the locale 
issue? If so, does anyone foresee any issues of pairing gcc with libstdc++ to 
take over from Sun Studio as our compiler of choice for OI (I'm talking 
theoretically, ignoring the work involved of making everything actually compile 
with it).

Cheers,

Alasdair


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