gcc build options

[Benjamin Kosnik]

> from where can I find out which configure options gcc has ?
> I saw 
> http://gcc.gnu.org/install/configure.html
> http://sources.redhat.com/libstdc++/configopts.html

You can always query the "configure" script directly:

<bkoz@haight> /mnt/hd/bliss/src.gcc/libstdc++-v3
%./configure --help

You can do the same thing with gcc

> but eg. these are not mention --enable-new-gxx-abi. I assume I can 
> see into the source but may be there are not to much comment, aren't there ?

I suggest looking at the gcc and toplevel ChangeLogs for more info...

> and which configure options turn on and off by --enable-libstdcxx-v3 ?

--enable-libstdcxx-v3 turns on -fhonor-std, so that it is activated by
default (and thus specifying it for the libstdc++-v3 Makefiles is
redundant.)

That's it, for now.

-benjamin