Re: Make -mno-shared the default for MIPS GNU/Linux

[David Daney <ddaney at avtrex dot com>]

Richard Sandiford wrote:
> David Daney <ddaney@avtrex.com> writes:
>   
> > However at least once a month I get bitten by the problem of putting 
> > code compiled with -mno-shared in a shared library and having it 
> > immediately SIGSEGV.  I should probably be more careful.  At least for 
> > the o32 ABI, supplying -fpic did not used to matter, I expect others to 
> > have problems as well.
> >     
>
> Is this when compiling your own sources, or when building a package
> you've downloaded?
Always with my own code.  As I said, I should be more careful.

>   THe reason I tried building a sysroot with this
> patch was to test how many of the packages assume that -fpic or -fPIC
> was the default for the MIPS.  The only one seemed to be glibc, where
> PIC in .S files was being assembled without -fPIC.  I patched glibc a
> while ago and haven't seen any problems since.  Because using -fpic or
> -fPIC for PIC is standard for other targets, most packages do it out of
> the box.
>
> As for silently linking broken libraries: I guess it would be easy to
> warn if __gnu_local_gp were used in shared library links.  I'll add that
> to my list of things to do.
>   
I was thinking the same.  It is probably almost a one-liner in libbfd.

David Daney