I have LDC running on an ARM Mac. If anyone else out there is an LDC or GDC user, could you knock up a quick shell program to compile and link a .d file to produce an executable ? found the linker but these tools are all new to me and a bit of help would save me a lot of trial and error and frustration as I try to find docs. GDC would be great too.

I have managed to achieve this before on a Raspberry Pi AArch64 Linux Debian where the compiler can link and generate an executable just in integrated fashion in the one command. The OSX tools seem rather different however.

I’m going to try installing GDC on the Mac next, have got that running on the Pi too successfully.

On Saturday, 24 June 2023 at 15:16:37 UTC, Cecil Ward wrote:
> I have LDC running on an ARM Mac. If anyone else out there is an LDC or GDC user, could you knock up a quick shell program to compile and link a .d file to produce an executable ? found the linker but these tools are all new to me and a bit of help would save me a lot of trial and error and frustration as I try to find docs. GDC would be great too.
>
> I have managed to achieve this before on a Raspberry Pi AArch64 Linux Debian where the compiler can link and generate an executable just in integrated fashion in the one command. The OSX tools seem rather different however.
>
> I’m going to try installing GDC on the Mac next, have got that running on the Pi too successfully.

I have ldc installed (from `brew`) on my (also arm) Mac, it works fine, or do you specifically want to work out which linker to invoke manually and so on?

I'm not sure if gdc is currently easy to obtain on arm macs. I think it should work fine but some packages hadn't enabled arm support on macos yet, last time *I* checked at least.

On Sunday, 9 July 2023 at 05:32:56 UTC, Danilo Krahn wrote:
> On Saturday, 24 June 2023 at 15:16:37 UTC, Cecil Ward wrote:
>> I have LDC running on an ARM Mac. If anyone else out there is an LDC or GDC user, could you knock up a quick shell program to compile and link a .d file to produce an executable ? found the linker but these tools are all new to me and a bit of help would save me a lot of trial and error and frustration as I try to find docs. GDC would be great too.
>>
>> I have managed to achieve this before on a Raspberry Pi AArch64 Linux Debian where the compiler can link and generate an executable just in integrated fashion in the one command. The OSX tools seem rather different however.
>
> ```d
> import std.stdio : writeln;
>
> void main() {
>     writeln("Hello, world!");
> }
> ```
>
> Compilation using LDC on macOS is just:
>
> ```
> ldc2 --release --O3 main.d
> ```
>
> Or some more options, to reduce executable size:
>
> ```
> ldc2 --release --O3 --flto=full -fvisibility=hidden -defaultlib=phobos2-ldc-lto,druntime-ldc-lto -L=-dead_strip -L=-x -L=-S -L=-lz main.d
> ```
>
> Executable size using first command: 1.3MB
> Executable size using second command: 756KB

Brilliant, much appreciated! :) I posted ages ago about the bloat that I see where function bodies are compiled even though they are in fact always inlined and so the original body is never needed. The address of these functions is not taken, so no indirect pointer calling, and the functions are all explicitly private which I hope is like static in C? Anyway, no one is calling them from outside the module.