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Re: C++ conversion status update


On 04/13/2016 09:16 AM, Joel Brobecker wrote:
OK.  We can just add an entry to lynxos to GDB_AC_BUILD_WITH_CXX
to make it default to C, still.  Like this, against
the version in the users/palves/cxx-conversion branch:

diff --git i/gdb/build-with-cxx.m4 w/gdb/build-with-cxx.m4
index aa3661f..e42719e 100644
--- i/gdb/build-with-cxx.m4
+++ w/gdb/build-with-cxx.m4
@@ -30,6 +30,7 @@ AC_DEFUN([GDB_AC_BUILD_WITH_CXX],
      *-*nto* | \
      *-*bsd* | \
      xtensa*-*-linux* | \
+    *-*-lynxos* | \
      null)
        enable_build_with_cxx=no ;;
      *)

That'll give you until all the other hosts are confirmed-converted,
at least.

We could do that indeed; or, IIRC, there is a configure option
to force the use of C instead of C++. I don't mind requiring
the user to force it; it's a good reminder (and ties in nicely
with another comment below).

If we do, perhaps it's time to change the major version number
to 8.0?


Or maybe defer that until we actually declare C mode unsupported.
I myself hope to do that before the next release, but ...  :-)

:-). I know it sounds self-serving, but I think we should be giving
users a one-release grace period. Make C++ the default, but with
C support for those who can't build with C++. That way, they can
still build, but they are clearly on notice about the impending
change. Then, as soon as the release branch is cut, we can flip
the switch. That way, I don't think you'll have to keep the compat
mode for much longer than you were planning to.

I like the idea of the one-release grace period. We've been discussing this for years anyway, waiting 6 additional months does not sound so bad. :-)

That gives toolchains enough time to adapt. So we're probably talking GDB 7.13 built with a C++ compiler?


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