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digitalmars.D.learn - Using D's precise GC when running an app with DUB

reply Per =?UTF-8?B?Tm9yZGzDtnc=?= <per.nordlow gmail.com> writes:
How do I specify a druntime flag such as

     --DRT-gcopt=gc:precise

when running with dub as

     dub run --compiler=dmd --build=unittest

?

The precise GC flag was introduced in verison 2.085.0

See:
- https://dlang.org/changelog/2.085.0.html#gc_precise
- https://dlang.org/spec/garbage.html#precise_gc
May 23 2019
next sibling parent reply rikki cattermole <rikki cattermole.co.nz> writes:
On 24/05/2019 2:50 AM, Per Nordlöw wrote:

 How do I specify a druntime flag such as
 
      --DRT-gcopt=gc:precise
 
 when running with dub as
 
      dub run --compiler=dmd --build=unittest


dub run --compiler=dmd --build=unittest -- --DRT-gcopt=gc:precise
May 23 2019
next sibling parent reply Per =?UTF-8?B?Tm9yZGzDtnc=?= <per.nordlow gmail.com> writes:
On Thursday, 23 May 2019 at 14:51:41 UTC, rikki cattermole wrote:

 dub run --compiler=dmd --build=unittest -- 
 --DRT-gcopt=gc:precise


Thanks!

And if I want to set this in a dub.sdl?
May 23 2019
parent reply rikki cattermole <rikki cattermole.co.nz> writes:
On 24/05/2019 2:58 AM, Per Nordlöw wrote:

 On Thursday, 23 May 2019 at 14:51:41 UTC, rikki cattermole wrote:

 dub run --compiler=dmd --build=unittest -- --DRT-gcopt=gc:precise


 
 Thanks!
 
 And if I want to set this in a dub.sdl?


No can do. There is meant to be a way to set it in D however.
But I have heard mixed results (not that I've tried it).
May 23 2019
parent reply Per =?UTF-8?B?Tm9yZGzDtnc=?= <per.nordlow gmail.com> writes:
On Thursday, 23 May 2019 at 15:02:12 UTC, rikki cattermole wrote:

 And if I want to set this in a dub.sdl?


 No can do. There is meant to be a way to set it in D however.
 But I have heard mixed results (not that I've tried it).


Should be as easy as

     dflags "--DRT-gcopt=gc:precise"

right?
May 23 2019
parent reply rikki cattermole <rikki cattermole.co.nz> writes:
On 24/05/2019 3:03 AM, Per Nordlöw wrote:

 On Thursday, 23 May 2019 at 15:02:12 UTC, rikki cattermole wrote:

 And if I want to set this in a dub.sdl?


 No can do. There is meant to be a way to set it in D however.
 But I have heard mixed results (not that I've tried it).


 
 Should be as easy as
 
      dflags "--DRT-gcopt=gc:precise"
 
 right?


That would be passed to dmd, not to the build executable upon running.
May 23 2019
parent reply Per =?UTF-8?B?Tm9yZGzDtnc=?= <per.nordlow gmail.com> writes:
On Thursday, 23 May 2019 at 15:05:15 UTC, rikki cattermole wrote:

 Should be as easy as
 
      dflags "--DRT-gcopt=gc:precise"
 
 right?


 That would be passed to dmd, not to the build executable upon 
 running.


You mean wise versa, right?

Now I understand,

--DRT-gcopt=gc:precise

is passed to the resulting binary...
May 23 2019
parent Per =?UTF-8?B?Tm9yZGzDtnc=?= <per.nordlow gmail.com> writes:
On Thursday, 23 May 2019 at 15:25:31 UTC, Per Nordlöw wrote:

 You mean wise versa, right?


Nevermind that comment. No "wise versa". You're answer is 
correct, rikki cattermole.

Thanks
May 24 2019
prev sibling parent reply Per =?UTF-8?B?Tm9yZGzDtnc=?= <per.nordlow gmail.com> writes:
On Thursday, 23 May 2019 at 14:51:41 UTC, rikki cattermole wrote:

 dub run --compiler=dmd --build=unittest -- 
 --DRT-gcopt=gc:precise


Hmm, the flag doesn't propagate to dmd when compiling in verbose 
mode via -v as

     dub run -v --compiler=dmd --build=unittest -- 
--DRT-gcopt=gc:precise

Shouldn't it?
May 23 2019
parent rikki cattermole <rikki cattermole.co.nz> writes:
On 24/05/2019 3:01 AM, Per Nordlöw wrote:

 On Thursday, 23 May 2019 at 14:51:41 UTC, rikki cattermole wrote:

 dub run --compiler=dmd --build=unittest -- --DRT-gcopt=gc:precise


 
 Hmm, the flag doesn't propagate to dmd when compiling in verbose mode 
 via -v as
 
      dub run -v --compiler=dmd --build=unittest -- --DRT-gcopt=gc:precise
 
 Shouldn't it?


No. You told dub to -v.

DFLAGS="-v" dub run --compiler=dmd --build=unittest -- 
--DRT-gcopt=gc:precise
May 23 2019
prev sibling parent Eugene Wissner <belka caraus.de> writes:
On Thursday, 23 May 2019 at 14:50:12 UTC, Per Nordlöw wrote:

 How do I specify a druntime flag such as

     --DRT-gcopt=gc:precise

 when running with dub as

     dub run --compiler=dmd --build=unittest

 ?

 The precise GC flag was introduced in verison 2.085.0

 See:
 - https://dlang.org/changelog/2.085.0.html#gc_precise
 - https://dlang.org/spec/garbage.html#precise_gc


You can put into the source:

extern(C) __gshared string[] rt_options = [
     "gcopt=gc:precise"
];

you can wrap it into some "version ()" and set the version in the 
dub configuration.
May 23 2019