Re: [build] Support libgo on Solaris 2

[Paolo Bonzini <bonzini at gnu dot org>]

On 01/13/2011 06:24 PM, Rainer Orth wrote:
> The following works for me, also cross-checked with -Bnosuchoption (to
> avoid triggering on the -Bunknown:-)
>
> ld_err=`$gcc_cv_ld -Bsymbolic 2>&1`
> if echo $ld_err | grep -i  illegal>  /dev/null \
>     || echo $ld_err | grep -i unknown>  /dev/null \
>     || echo $ld_err | grep -i unrecognized>  /dev/null; then
>    :
> else
>    gcc_cv_ld_static_dynamic=yes
> fi
>
> > >  Subject to what the build maintainers think, of course.
> I've CCed Paolo for comments.

I don't think this is how you build a feature test.  What if another OS 
says that -Bsymbolic is "invalid", or has a -B option that takes an 
arbitrary argument (like -I for the GNU linker)?

The way to build a proper feature test would be to compile a sample 
dynamic library that uses printf, link it with -Bsymbolic, compile 
another program that overrides printf and links with the dynamic 
library, run the program, and check that the overridden printf is not used.

I think that in this case a case statement is better.

Paolo