On Fri, 22 Jul 2011 15:12:36 -0700
Ian Lance Taylor <i...@google.com> wrote:

> Basile Starynkevitch <bas...@starynkevitch.net> writes:
> 
> > Should we add an option to the gcc driver which would print such checksums?
> 
> I'm not quite sure what checksums you want.
> 
> Suppose you just do
> 
> md5sum `gcc --print-file-name=cc1`
> 
> ?
> 
> That will give you a checksum without gcc going to the trouble of
> generating it.


What about the other files. (lto1, cc1plus...). On my Debian/Sid, 
% gcc --print-file-name=cc1
/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.6.1/cc1

But 
% ls -F /usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.6.1/
32/            crtprec80.o      libgcj-tools.so@        libquadmath.a
cc1*           ecj1*            libgcj.so@              libquadmath.so@
cc1plus*       gengtype*        libgcj.spec             libssp_nonshared.a
collect2*      gtype.state      libgcj_bc.so            libstdc++.a
crtbegin.o     include/         libgcov.a               libstdc++.so@
crtbeginS.o    include-fixed/   libgij.so@              libsupc++.a
crtbeginT.o    jc1*             libgomp.a               lto-wrapper*
crtend.o       jvgenmain*       libgomp.so@             lto1*
crtendS.o      libgcc.a         libgomp.spec            plugin/
crtfastmath.o  libgcc_eh.a      liblto_plugin.so@
crtprec32.o    libgcc_s.so@     liblto_plugin.so.0@
crtprec64.o    libgcc_s_32.so@  liblto_plugin.so.0.0.0


How can I know which of the above files have some influence on the behavior of 
GCC
plugins? (This is not true of all, crtbegin.o don't, and I would think that 
gengtype
don't neither, because I believe that its observable behavior changes only from 
4.6 to
4.7, but not much from 4.6.0 to 4.6.1).

I was suggesting adding some way to get the checksums of only the relevant 
files.

Regards.
-- 
Basile STARYNKEVITCH         http://starynkevitch.net/Basile/
email: basile<at>starynkevitch<dot>net mobile: +33 6 8501 2359
8, rue de la Faiencerie, 92340 Bourg La Reine, France
*** opinions {are only mine, sont seulement les miennes} ***

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