On Tue, Mar 31, 2015 at 9:39 AM, Jack Howarth <howarth.at....@gmail.com> wrote:
> On Tue, Mar 31, 2015 at 12:14 PM, H.J. Lu <hjl.to...@gmail.com> wrote:
>> On Tue, Mar 31, 2015 at 9:09 AM, Jack Howarth <howarth.at....@gmail.com>
>> wrote:
>>> H.J.,
>>> Did you attach the correct version of the patch? I don't see
>>> anything conditional on linux.
>>> Jack
>>
>> My patch will build and install libgcc_nonshared.a for all targets. If you
>> don't link against it, nothing is changed. On Linux, it is used via the
>> init_spec change.
>
> Isn't...
>
> diff --git a/gcc/gcc.c b/gcc/gcc.c
> index d956c36..3fbd549 100644
> --- a/gcc/gcc.c
> +++ b/gcc/gcc.c
> @@ -1566,6 +1566,7 @@ init_spec (void)
> if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
> {
> init_gcc_specs (&obstack,
> + "-lgcc_nonshared "
> "-lgcc_s"
> #ifdef USE_LIBUNWIND_EXCEPTIONS
> " -lunwind"
> @@ -1591,6 +1592,7 @@ init_spec (void)
> /* Ug. We don't know shared library extensions. Hope that
> systems that use this form don't do shared libraries. */
> init_gcc_specs (&obstack,
> + "libgcc_nonshared.a%s "
> "-lgcc_s",
> "libgcc.a%s",
> "libgcc_eh.a%s"
>
> problematic for Solaris? I am unfamiliar with the Solaris spec
> handling but sol2.h doesn't seem to have any instances of -lgcc which
> might imply they use the stock compiler invocation which will now have
> a non-existent libgcc_nonshared static library.
libgcc_nonshared.a is built and installed for all targets.
> Also, are you leaving the cpu symbols in libgcc.a on non-linux
> targets? If not, the linkage failure reported in
> https://gcc.gnu.org/ml/gcc-patches/2015-03/msg01668.html will occur,
> no?
My current patch doesn't change what are in libgcc.a. It
adds libgcc_nonshared.a for all targets, which contains
the same cpuinfo.o as in libgcc.a or a dummy .o if libgcc.a
doesn't have cpuinfo.o.
--
H.J.
