[dmd-internals] The proposed -Xcc dmd option would be quite useful for PLplot for the -pthread case

[Johan Engelen]

I agree with striving to remove legacy code.
The problem I see with the current solution is that there is no migration
path. The preview switch has the appearance of an optional thing, but it
isn't. Editing dmd/ldc2.conf is not a viable hard requirement in order to
use plplot.

The bigger problem that I see is that we are making D compilation compile
flags even more awkward. The noXlinker option means the user has to pass to
dmd a gcc option ("-Xlinker") in order to pass a flag to the linker....?!

It's nice there is some sort of solution for the plplot issue. But I'm
happy I don't have to implement and maintain the logic of figuring out in a
cmake script which dmd version is used, or ldc, or gdc, or what flag is put
in dmd.conf that changes cmdline behavior,.............

-Johan


On Thu, Sep 26, 2019, 07:46 Mike Franklin via dmd-internals <
dmd-internals at puremagic.com> wrote:

> Johan,
>
> Yes, users opting into the option with `-preview=noXlinker` will need to
> fully opt into it.  So it will be best for them to just add
> `-preview=noXlinker` and other adjustments to their dmd.conf file.
>
> The reason I chose not to implement `-Xcc` is because we have too many
> ways of doing the same thing. The code is becoming difficult to learn and
> maintain as we try to carry forward the design decisions of the past
> indefinitely.  I'm sure you and others will disagree, but I think it is
> best to invest with the hope that someday we can delete legacy code, not
> continue to add to it.
>
> Mike
>
> On Thursday, September 26, 2019, 2:39:16 PM GMT+9, Johan Engelen via
> dmd-internals <dmd-internals at puremagic.com> wrote:
>
>
> On Thu, Sep 26, 2019 at 4:13 AM Alan W. Irwin via dmd-internals <
> dmd-internals at puremagic.com> wrote:
>
>
> I spoke too soon (sigh) about this new -preview=noXlinker option
> actually working, see <https://issues.dlang.org/show_bug.cgi?id=20244
> >.
>
>
> Reading that bug report, it appears to me that this is not a simple
> "preview" option: dmd.conf may need adjustment and thus the user cannot
> simply switch between the option being on or off. Why not implement LDC's
> -Xcc as well?
>
> -Johan
>
>
>
> _______________________________________________
> dmd-internals mailing list
> dmd-internals at puremagic.com
> http://lists.puremagic.com/mailman/listinfo/dmd-internals
> _______________________________________________
> dmd-internals mailing list
> dmd-internals at puremagic.com
> http://lists.puremagic.com/mailman/listinfo/dmd-internals
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.puremagic.com/pipermail/dmd-internals/attachments/20190926/62d00f30/attachment.htm>