[farmhash] Add new port

[kreuzerkrieg]

Google FarmHash

• Which triplets are supported/not supported?
  uwp and arm on windows are not supported
  Have you updated the CI baseline?
  yes

• Does your PR follow the maintainer guide?

Yes

[NancyLi1013]

Hi @kreuzerkrieg thanks for this PR.
The regressions on x86-windows, x64-windows, x64-windows triplets:

Can't load '/usr/lib/perl5/core_perl/auto/POSIX/POSIX.dll' for module POSIX: No such process at /usr/share/perl5/core_perl/XSLoader.pm line 93.
  at /usr/lib/perl5/core_perl/POSIX.pm line 24.
Compilation failed in require at /usr/share/autoconf/Autom4te/FileUtils.pm line 266.
BEGIN failed--compilation aborted at /usr/share/autoconf/Autom4te/FileUtils.pm line 266.
Compilation failed in require at /usr/bin/autoreconf line 42.
BEGIN failed--compilation aborted at /usr/bin/autoreconf line 42.

Could you please take a look and try to fix them?

[kreuzerkrieg]

Hi @kreuzerkrieg thanks for this PR.
The regressions on x86-windows, x64-windows, x64-windows triplets:

Can't load '/usr/lib/perl5/core_perl/auto/POSIX/POSIX.dll' for module POSIX: No such process at /usr/share/perl5/core_perl/XSLoader.pm line 93.
  at /usr/lib/perl5/core_perl/POSIX.pm line 24.
Compilation failed in require at /usr/share/autoconf/Autom4te/FileUtils.pm line 266.
BEGIN failed--compilation aborted at /usr/share/autoconf/Autom4te/FileUtils.pm line 266.
Compilation failed in require at /usr/bin/autoreconf line 42.
BEGIN failed--compilation aborted at /usr/bin/autoreconf line 42.

Could you please take a look and try to fix them?

Dont have a win machine at hand right now, will check it later

[kreuzerkrieg]

Hi @kreuzerkrieg thanks for this PR.
The regressions on x86-windows, x64-windows, x64-windows triplets:
Can't load '/usr/lib/perl5/core_perl/auto/POSIX/POSIX.dll' for module POSIX: No such process at /usr/share/perl5/core_perl/XSLoader.pm line 93.
at /usr/lib/perl5/core_perl/POSIX.pm line 24.
Compilation failed in require at /usr/share/autoconf/Autom4te/FileUtils.pm line 266.
BEGIN failed--compilation aborted at /usr/share/autoconf/Autom4te/FileUtils.pm line 266.
Compilation failed in require at /usr/bin/autoreconf line 42.
BEGIN failed--compilation aborted at /usr/bin/autoreconf line 42.

Could you please take a look and try to fix them?

Ok, checked it. Well, I didnt get same messages but it clearly cant be compiled on Windows, at least I dont see it happening without intervention in the original autotools script
Meanwhile I've disabled builds for win/uwp for all architectures and all builds for arm

[ras0219-msft]

Thanks for the PR!

This is fine for now, however looking at the upstream sources it seems that the build process is actually very simple for the library -- just src/farmhash.cc and src/farmhash.h. A very nice improvement would be to add a CMake replacement buildsystem, which would enable compiling for more targets and easier tweaking of flags for users (such as passing -march).