The line

dflags "-linker=gold" platform="linux-ldc" # use GNU gold linker

in dub.sdl

enables me to change linker for LDC.

Is it possible to choose a specific linker for DMD aswell in a similar way?

I only find the flag `-L` that sets flags but no linker executable.

One way is to link

    /usr/bin/ld

to either

    /usr/bin/ld.gold

or

    /usr/bin/ld.lld

but it would be nice to be able to do this from the dub.sdl or the command-line call to dub.

On Sunday, 12 July 2020 at 16:36:09 UTC, Per Nordlöw wrote:
> The line
>
> dflags "-linker=gold" platform="linux-ldc" # use GNU gold linker
>
> in dub.sdl
>
> enables me to change linker for LDC.
>
> Is it possible to choose a specific linker for DMD aswell in a similar way?
>
> I only find the flag `-L` that sets flags but no linker executable.
>
> One way is to link
>
>     /usr/bin/ld
>
> to either
>
>     /usr/bin/ld.gold
>
> or
>
>     /usr/bin/ld.lld
>
> but it would be nice to be able to do this from the dub.sdl or the command-line call to dub.

dub links using the compiler, so it basically just runs `dmd [flags] [files-to-link]`

In the DMD documentation you can see that it just runs gcc: https://dlang.org/dmd-linux.html#linking

Personally I always `ln -s /usr/bin/ld.gold /usr/local/bin/ld` to make ld.gold the default.

On 2020-07-12 18:36, Per Nordlöw wrote:
> The line
> 
> dflags "-linker=gold" platform="linux-ldc" # use GNU gold linker
> 
> in dub.sdl
> 
> enables me to change linker for LDC.
> 
> Is it possible to choose a specific linker for DMD aswell in a similar way?
> 
> I only find the flag `-L` that sets flags but no linker executable.
> 
> One way is to link
> 
>      /usr/bin/ld
> 
> to either
> 
>      /usr/bin/ld.gold
> 
> or
> 
>      /usr/bin/ld.lld
> 
> but it would be nice to be able to do this from the dub.sdl or the command-line call to dub.

There's an environment variable "CC" that can be used to select which C compiler is used. Is there any equivalence for selecting the linker, "LD" perhaps?

-- 
/Jacob Carlborg

On Wednesday, 15 July 2020 at 11:38:47 UTC, Jacob Carlborg wrote:
> There's an environment variable "CC" that can be used to select which C compiler is used. Is there any equivalence for selecting the linker, "LD" perhaps?

You normally just add -fuse-ld=gold to the C compiler cmdline, e.g., via -Xcc=-fuse-ld=gold in the DMD cmdline.