Proper support for ARM/ARM64 on LDC builds?

[TurkeyMan]

VS supports ARM and ARM64, and LDC does too. It'd be really great if these platforms were working for LDC alongside the C++ compiler.

LDC's distro doesn't yet include the libs for those platforms, but I might also add a ticket there too to start including those libs in the build. MS is clearly moving in that direction...

DMD is working to support ARM64, so maybe just set the compiler flag for now and the build will obviously fail, but it'll work when Walter releases something.

[TurkeyMan]

ldc-developers/ldc#4896

[rainers]

Version 1.40.0 of Visual D was built for ARM64 to support being loaded in the ARM64 version of Visual Studio (no ARM64EC support there). This uses the old project format where adding -march=arm64 as an additional option causes the omission of -m32/-m64 when building with LDC. This could be enhanced slightly by deriving this from the selected platform.

VC project support should be doable, too. I guess you could even try it by copying the D support files from the msbuild importBefore/importAfter folders to the folders for the other architecture. Then add -march=arm64 as an additional option and pass the LDC's libarm64 folder as an additional search path.

[TurkeyMan]

Oh yes, I'm certain it can be made to work as you say. I just reckon it's about time it's all working nicely out of the box.

[rainers]

ARM64 support added for the VC integration in https://github.com/dlang/visuald/releases/tag/v1.4.1-beta1

No support with the custom project format, but I hope this can be considered legacy (though Visual D itself still uses it).