Re: Linking libc into shared libarries (was: CVS commit: src/share/mk)

[Nick Hudson <nick.hudson%dsl.pipex.com@localhost>]

On Sunday 27 April 2008 10:29:31 Christos Zoulas wrote:
> In article <200804271021.58190.nick.hudson%dsl.pipex.com@localhost>,
>
> Nick Hudson  <nick.hudson%dsl.pipex.com@localhost> wrote:
> >-=-=-=-=-=-
> >
> >On Sunday 27 April 2008 08:43:35 matthew green wrote:
> >>    | Hi Christos,
> >>    |
> >>    | Thank you for linking libc into shared libraries.
> >>    | There were some further changes to exclude the gcc libraries, but
> >>    | I took this mail to reply to because that was the start.
> >>    |
> >>    | Hmmm, what about other shared libaries which doesn't use the bsd
> >>    | make, e.g. gmake or a bsd make which doesn't use the /usr/share/mk
> >>    | rules? Shouldn't they be also linked against libc?
> >>    |
> >>    | Can this be done in the linker itself and how do other OS handle
> >>    | this?
> >>
> >>    I don't know how other OS's handle this. I will look.
> >>
> >>
> >> not in the linker..but see what other systems do with "gcc -shared"?
> >
> >Something like the attached (untested)?
> >
> >Nick
> >(-posix/-pthread with -p or -pg and -shared looks wrong to me)
> >
> >-=-=-=-=-=-
> >
> >Index: gnu/dist/gcc4/gcc/config/netbsd.h
> >===================================================================
> >RCS file: /cvsroot/src/gnu/dist/gcc4/gcc/config/netbsd.h,v
> >retrieving revision 1.5
> >diff -u -p -u -r1.5 netbsd.h
> >--- gnu/dist/gcc4/gcc/config/netbsd.h        13 May 2006 01:48:14 -0000      
> >1.5
> >+++ gnu/dist/gcc4/gcc/config/netbsd.h        27 Apr 2008 09:20:09 -0000
> >@@ -116,6 +116,7 @@ Boston, MA 02110-1301, USA.  */
> >        %{!pg:-lposix}}              \
> >      %{p:-lposix_p}         \
> >      %{pg:-lposix_p}}               \
> >+   %{shared: -lc}           \
> >    %{!shared:                       \
> >      %{!symbolic:           \
> >        %{!p:                        \
> >@@ -129,6 +130,7 @@ Boston, MA 02110-1301, USA.  */
> >        %{!pg:-lposix}}              \
> >      %{p:-lposix_p}         \
> >      %{pg:-lposix_p}}               \
> >+   %{shared: -lc}           \
> >    %{!shared:                       \
> >      %{!symbolic:           \
> >        %{!p:                        \
>
> This looks right to me. Are you going to test it or should I?

Actually, bsd.lib.mk willl need work as it uses $(CC) -shared, e.g. libgcc_s 
will need help.

I'm not in a position to easily test any of this at the moment.

Nick