Zig CC cross-compilation support for Windows on Linux host.

[svladykin]

Was able to cross-compile everything on Linux for Windows with Zig. Some minor cleanup was needed.

It would be great to add a CI check for that. Here is the script:

export ZIG=zig-linux-x86_64-0.12.0-dev.1834+f36ac227b
rm -rf build && mkdir build && cd build
curl -o zig.tar.xz "https://ziglang.org/builds/$ZIG.tar.xz"
tar -xf zig.tar.xz
export CC="$(pwd)/$ZIG/zig cc -target x86_64-windows"
cmake -DCMAKE_SYSTEM_NAME=Windows ..
make

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (c729344) 99.81% compared to head (6d2af7e) 99.81%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #128   +/-   ##
=======================================
  Coverage   99.81%   99.81%           
=======================================
  Files          21       21           
  Lines        2195     2195           
  Branches      388      388           
=======================================
  Hits         2191     2191           
  Misses          1        1           
  Partials        3        3           

Files	Coverage Δ
condition/sc_cond.c	100.00% <ø> (ø)
ini/sc_ini.c	100.00% <ø> (ø)
logger/sc_log.c	100.00% <ø> (ø)
memory-map/sc_mmap.c	100.00% <ø> (ø)
signal/sc_signal.c	100.00% <ø> (ø)
thread/sc_thread.c	100.00% <ø> (ø)
uri/sc_uri.c	100.00% <ø> (ø)

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[tezc]

To add it to CI, we should setup Linux for Windows first right? If you already know how to do it, you can add a job to windows.yml. Otherwise, let's handle it later.

[svladykin]

It actually can be executed on any Linux. Let me try to add it to .ubuntu.yml.

[svladykin]

Checked the build log for x64-ubuntu / Zig Windows, it works as expected.

[tezc]

thank you