On 11.03.2022 14:34, Julian Waters wrote:
Darn, seems like it'll be much harder than I expected. Since multiple
toolchains are supported for macOS and Linux, I assumed a slight patch
would help get it to work on Windows. Looking through the stuff in make
though, it appears a lot of the build system implicitly expects the
compiler for Windows to always be Visual C++, which doesn't really help
that much (Though the fact that we can exclude many versions of gcc, such
as Cygwin's and old MinGW binaries helps a lot). The build process for the
newer Windows ports of gcc are surprisingly similar to Visual C++ though
(Eg rc can be swapped out for windres) so this might hopefully be something
I can try exploring in the future (Gonna look a bit harder at make and
write what I can find back to this mailing list in the meantime). It'd be
interesting if benchmarks of the JVM compiled with different compilers on
Windows can be compared side by side on the off chance this becomes a
reality though
I wouldn't necessarily expect large differences between builds compiled
with different C/C++ compilers on industry benchmarks like SpecJBB,
since the JVM will spend most of its time executing code it JIT-compiled
itself.
I think more interesting from a developer/CI perspective would be
potential differences in compilation speed, but I would naively assume
those to be dominated by the linker, rather than the compiler itself.
cheers,
dalibor topic
best regards,
Julian
On Fri, Mar 11, 2022 at 9:16 PM Magnus Ihse Bursie <
magnus.ihse.bur...@oracle.com> wrote:
On 2022-03-11 12:55, Julian Waters wrote:
Hi all,
How feasible would it be/much effort would it require to support
compiling
with alternate toolchains on Windows besides Visual C++ (like the Windows
ports of clang and gcc) if we restrict the allowed toolchains to only
those
that link against the ucrt? (Toolchains linking against the dated msvcrt
would present too many issues to work with)
That'd be a huge undertaking. And any such patch would only be accepted
into the code base if the organization behinded appeared trustworthy in
their long-term commitment to keeping it working.
/Magnus
--
<http://www.oracle.com> Dalibor Topic
Consulting Product Manager
Phone: +494089091214 <tel:+494089091214>, Mobile: +491737185961
<tel:+491737185961>
Oracle Global Services Germany GmbH
Hauptverwaltung: Riesstr. 25, D-80992 München
Registergericht: Amtsgericht München, HRB 246209
Geschäftsführer: Ralf Herrmann
