Re: [build, doc, v3] Support Sun symbol versioning in libstdc++-v3, rev. 2

[IainS <developer at sandoe-acoustics dot co dot uk>]

On 2 Jul 2010, at 13:58, Rainer Orth wrote:

> > but no other references to "symbol" that have any bearing..
> > so perhaps the test is not being run at all for Darwin?
>
> Sure it is, otherwise you wouldn't see Sun-style symbol versioning  
> being
> enabled.  The next test with
>
> gcc -fPIC -shared -Wl,-M,./conftest.map
>
> is the interesting one.  What happens there?  And please provide the
> relevant output fragment of the libssp configure run, too.

configure:4156: /GCC/gcc-4-6-trunk-build/./gcc/xgcc -B/GCC/gcc-4-6- 
trunk-build/./gcc/ -B/GCC/gcc-4-6-install/i686-apple-darwin9/bin/ -B/ 
GCC/gcc-4-6-install/i686-apple-darwin9/lib/ -isystem /GCC/gcc-4-6- 
install/i686-apple-darwin9/include -isystem /GCC/gcc-4-6-install/i686- 
apple-darwin9/sys-include    -o conftest -g -O2   -fPIC -shared -Wl,- 
M,./conftest.map conftest.c  >&5
ld warning: in ./conftest.map, file is not of required architecture
configure:4156: $? = 0
configure:4166: result: sun

hm.  I guess that -M is unrecognized and the linker falls back to it's  
default which is to expect the remaining items to be objects - which,  
of course, the ma file is not.  However, since the link does not  
actually fail - I guess it only reports a warning.

Iain.