D for sciencetific scripting / rapid protoryping

[Arun Chandrasekaran]

On Tuesday, 22 October 2019 at 07:51:16 UTC, Arun Chandrasekaran 
wrote:
> On Tuesday, 22 October 2019 at 07:40:01 UTC, Prokop Hapala 
> wrote:
>> [...]
>
> If you are building individual files, use ldc2 with 
> --link-defaultlib-shared flag:
>
> arun at home-pc:/tmp$ cat a.d
> void main() { import std; writeln("Hai"); }
> arun at home-pc:/tmp$ ldc2 a.d
> arun at home-pc:/tmp$ ldd a
>         linux-vdso.so.1 (0x00007fff6395b000)
>         libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 
> (0x00007f1ec91ea000)
>         libpthread.so.0 => 
> /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f1ec91c7000)
>         libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 
> (0x00007f1ec9078000)
>         libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 
> (0x00007f1ec905e000)
>         libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 
> (0x00007f1ec8e6d000)
>         /lib64/ld-linux-x86-64.so.2 (0x00007f1ec92c4000)
> arun at home-pc:/tmp$ ldc2 a.d --link-defaultlib-shared
> arun at home-pc:/tmp$ ldd a
>         linux-vdso.so.1 (0x00007ffcbda7f000)
>         libphobos2-ldc-shared.so.88 => 
> /home/arun/.bin/ldc2-1.18.0-linux-x86_64/bin/../lib/libphobos2-ldc-shared.so.88 (0x00007f1b57be8000)
>         libdruntime-ldc-shared.so.88 => 
> /home/arun/.bin/ldc2-1.18.0-linux-x86_64/bin/../lib/libdruntime-ldc-shared.so.88 (0x00007f1b57abc000)
>         libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 
> (0x00007f1b57a84000)
>         libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 
> (0x00007f1b57893000)
>         libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 
> (0x00007f1b57744000)
>         libpthread.so.0 => 
> /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f1b57721000)
>         librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 
> (0x00007f1b57714000)
>         libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 
> (0x00007f1b5770e000)
>         /lib64/ld-linux-x86-64.so.2 (0x00007f1b58067000)
> arun at home-pc:/tmp$

If you want similar behavior with dub, here is a sample dub.json

arun at home-pc:/tmp/test$ cat dub.json
{
     "authors": [
         "Arun"
     ],
     "copyright": "Copyright © 2019, Arun",
     "description": "A minimal D application.",
     "license": "proprietary",
     "dflags-ldc": ["-link-defaultlib-shared"],
     "name": "test"
}
arun at home-pc:/tmp/test$

Dub settings can be at times intimidating, but still give it a 
read https://dub.pm/package-format-json#build-settings