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digitalmars.D - dmd -Wl=comma_separated_linker_flags (cf clang++ -Wl,

reply Timothee Cour via Digitalmars-d <digitalmars-d puremagic.com> writes:
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
Dec 11 2016
parent reply Guillaume Boucher <guillaume.boucher.d gmail.com> writes:
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}
Dec 11 2016
parent reply Timothee Cour via Digitalmars-d <digitalmars-d puremagic.com> writes:
 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}
Feb 20 2017
parent reply Nicholas Wilson <iamthewilsonator hotmail.com> writes:
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.
Feb 20 2017
parent reply Timothee Cour via Digitalmars-d <digitalmars-d puremagic.com> writes:
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.
Feb 20 2017
parent reply Jacob Carlborg <doob me.com> writes:
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
Feb 22 2017
parent Timothee Cour via Digitalmars-d <digitalmars-d puremagic.com> writes:
 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.
Feb 22 2017