question 1:

is there a way to pass linker flags?
dmd -Wl=comma_separated_linker_flags
eg:
dmd -Wl=-lbar,-Ldir,--export-dynamic,-pie

(same functionality as clang++ -Wl,-lbar,-Ldir,--export-dynamic,-pie)

If not could we support it? Would make a lot of things easier.

question 2:

Furthermore, on linux, not sure I can pass the -pie flag to dmd ; currently this works:

```
dmd -of=${filelib}.o -c ${FLAGS} fun.d
clang++ -o ${filelib} -pie ${filelib}.o -Wl,-lphobos2,--export-dynamic
```

but not:
dmd -of=${filelib} ${FLAGS} -L-pie -L--export-dynamic fun.d

with question 1 solved, this should automatically work via: dmd -of=${filelib} ${FLAGS} -Wl=-pie,--export-dynamic fun.d

On Sunday, 11 December 2016 at 21:39:26 UTC, Timothee Cour wrote:
> is there a way to pass linker flags?
> dmd -Wl=comma_separated_linker_flags
> eg:
> dmd -Wl=-lbar,-Ldir,--export-dynamic,-pie
>
> (same functionality as clang++ -Wl,-lbar,-Ldir,--export-dynamic,-pie)
>
> If not could we support it? Would make a lot of things easier.

Just use shell expansions?

dmd -Wl,-{lbar,Ldir,-export-dynamic,pie}

> Just use shell expansions?
> dmd -Wl,-{lbar,Ldir,-export-dynamic,pie}

This doesn't work :  unrecognized switch '-Wl...'

On Sun, Dec 11, 2016 at 3:36 PM, Guillaume Boucher via Digitalmars-d <digitalmars-d@puremagic.com> wrote:
> On Sunday, 11 December 2016 at 21:39:26 UTC, Timothee Cour wrote:
>>
>> is there a way to pass linker flags?
>> dmd -Wl=comma_separated_linker_flags
>> eg:
>> dmd -Wl=-lbar,-Ldir,--export-dynamic,-pie
>>
>> (same functionality as clang++ -Wl,-lbar,-Ldir,--export-dynamic,-pie)
>>
>> If not could we support it? Would make a lot of things easier.
>
>
> Just use shell expansions?
>
> dmd -Wl,-{lbar,Ldir,-export-dynamic,pie}
>

On Tuesday, 21 February 2017 at 00:33:27 UTC, Timothee Cour wrote:
>> Just use shell expansions?
>> dmd -Wl,-{lbar,Ldir,-export-dynamic,pie}
>
> This doesn't work :  unrecognized switch '-Wl...'
>
> On Sun, Dec 11, 2016 at 3:36 PM, Guillaume Boucher via Digitalmars-d <digitalmars-d@puremagic.com> wrote:
>> On Sunday, 11 December 2016 at 21:39:26 UTC, Timothee Cour wrote:
>>>
>>> is there a way to pass linker flags?
>>> dmd -Wl=comma_separated_linker_flags
>>> eg:
>>> dmd -Wl=-lbar,-Ldir,--export-dynamic,-pie
>>>
>>> (same functionality as clang++ -Wl,-lbar,-Ldir,--export-dynamic,-pie)
>>>
>>> If not could we support it? Would make a lot of things easier.
>>
>>
>> Just use shell expansions?
>>
>> dmd -Wl,-{lbar,Ldir,-export-dynamic,pie}

linker flag is prefix is `-L` e.g. `-L-lbar` to link bar.

relying on the shell (especially involving arrays) seems like a bad idea: not portable, easy to mess up:

`dmd -L{-lbar,-Ldir,--export-dynamic}` works but what if it's stored in $lflags:

lflags="-lbar,-Ldir,--export-dynamic"

the function to convert $lflags to a dmd-appropriate flag is not so simple; what do you suggest for that case?




On Mon, Feb 20, 2017 at 5:26 PM, Nicholas Wilson via Digitalmars-d <digitalmars-d@puremagic.com> wrote:
> On Tuesday, 21 February 2017 at 00:33:27 UTC, Timothee Cour wrote:
>>>
>>> Just use shell expansions?
>>> dmd -Wl,-{lbar,Ldir,-export-dynamic,pie}
>>
>>
>> This doesn't work :  unrecognized switch '-Wl...'
>>
>> On Sun, Dec 11, 2016 at 3:36 PM, Guillaume Boucher via Digitalmars-d <digitalmars-d@puremagic.com> wrote:
>>>
>>> On Sunday, 11 December 2016 at 21:39:26 UTC, Timothee Cour wrote:
>>>>
>>>>
>>>> is there a way to pass linker flags?
>>>> dmd -Wl=comma_separated_linker_flags
>>>> eg:
>>>> dmd -Wl=-lbar,-Ldir,--export-dynamic,-pie
>>>>
>>>> (same functionality as clang++ -Wl,-lbar,-Ldir,--export-dynamic,-pie)
>>>>
>>>> If not could we support it? Would make a lot of things easier.
>>>
>>>
>>>
>>> Just use shell expansions?
>>>
>>> dmd -Wl,-{lbar,Ldir,-export-dynamic,pie}
>
>
> linker flag is prefix is `-L` e.g. `-L-lbar` to link bar.

On 2017-02-21 03:53, Timothee Cour via Digitalmars-d wrote:
> relying on the shell (especially involving arrays) seems like a bad
> idea: not portable, easy to mess up:
>
> `dmd -L{-lbar,-Ldir,--export-dynamic}` works but what if it's stored in $lflags:
>
> lflags="-lbar,-Ldir,--export-dynamic"
>
> the function to convert $lflags to a dmd-appropriate flag is not so
> simple; what do you suggest for that case?

You can pass multiple -L flags:

dmd -L-lbar -L-Ldir -L--export-dynamic

-- 
/Jacob Carlborg

> You can pass multiple -L flags:
>
> dmd -L-lbar -L-Ldir -L--export-dynamic

I know, but that's inconvenient.
Would make things a lot easier if we had something like what i suggested:

`-Wl=comma_separated_linker_flags`

advantages: could seemlessly use `comma_separated_linker_flags` with either dmd or rdmd (compile + link in 1 stage) or 2 stages (compile w dmd followed by link w clang [or ld]) or make it easier to migrate code from build tools from C echosystem, or integrate seemlessly with ldc etc.