Anyone used LLVM-D with Dub?

[Moritz Maxeiner]

On Wednesday, 2 October 2013 at 02:22:42 UTC, Alan wrote:
> Hello! I'm working on a project and I was going to use LLVM 
> with the LLVM-D wrapper which has it's own Dub package and 
> everything https://github.com/Calrama/llvm-d
> I've installed the package with Dub, added it to my 
> packages/builds dependencies.
> When I build however I get an error:
> Linking...
> /usr/bin/ld: error: /home/apott/projects/Hyphen/temp.o: 
> multiple definition of 
> '_D4llvm1d2ir10basicblock10BasicBlock16removeFromParentMFZv'
> /usr/bin/ld: /home/apott/projects/Hyphen/temp.o: previous 
> definition here
> /home/apott/projects/Hyphen/temp.o:../../.dub/packages/llvm-d-master/llvm/d/ir/globalvariable.d:function 
> _D4llvm1d2ir8constant8Constant6__vtblZ: error: undefined 
> reference to 
> '_D4llvm1d2ir8constant8Constant27replaceUsesOfWithOnConstantMFC4llvm1d2ir5value5ValueC4llvm1d2ir5value5ValueC4llvm1d2ir3use3UseZv'
> /home/apott/projects/Hyphen/temp.o:../../.dub/packages/llvm-d-master/llvm/d/ir/globalvariable.d:function 
> _D4llvm1d2ir11globalvalue11GlobalValue6__vtblZ: error: 
> undefined reference to 
> '_D4llvm1d2ir8constant8Constant27replaceUsesOfWithOnConstantMFC4llvm1d2ir5value5ValueC4llvm1d2ir5value5ValueC4llvm1d2ir3use3UseZv'
> /home/apott/projects/Hyphen/temp.o:../../.dub/packages/llvm-d-master/llvm/d/ir/globalvariable.d:function 
> _D4llvm1d2ir12llvmfunction8Function6__vtblZ: error: undefined 
> reference to 
> '_D4llvm1d2ir8constant8Constant27replaceUsesOfWithOnConstantMFC4llvm1d2ir5value5ValueC4llvm1d2ir5value5ValueC4llvm1d2ir3use3UseZv'
> /home/apott/projects/Hyphen/temp.o:../../.dub/packages/llvm-d-master/llvm/d/ir/globalvariable.d:function 
> _D4llvm1d2ir9constants10UndefValue6__vtblZ: error: undefined 
> reference to 
> '_D4llvm1d2ir8constant8Constant27replaceUsesOfWithOnConstantMFC4llvm1d2ir5value5ValueC4llvm1d2ir5value5ValueC4llvm1d2ir3use3UseZv'
> collect2: error: ld returned 1 exit status
> --- errorlevel 1
> Error: Link command failed with exit code 1
>
> I want to know if anyone here has any experience witht his by 
> any chance? The source of the problem? Is it a bug? Thanks for 
> any suggestions.

I don't have any experience with using dub's dependency settings 
for projects, but regarding llvm-d itself:

1) The D API itself is not ready for active use (that's what the 
C binding are currently in place for), but it does compile and 
link properly in my tests, which include:
   - Building with the provided VisualStudio solution file into a 
static libary on Windows.
   - Changing (locally) the "sourceLibrary" setting to 
"staticLibrary" in package.json and running "dub build", which 
provides a working static library for me with the current master.

For some reason, however, building ("dub build") with 
"sourceLibrary" leads to an assertion error I could not track 
down, as I was not able to make more sense out of the output 
produced by "dub build --vverbose" than that an exception had 
occured.

2) I can build and run all of llvm-d's samples the following way:

1. Clone the repo
2. cd into the local clone
3. Run the samples with rdmd, e.g. "rdmd samples/fibonacci.d".


Could you give me a minimal example I can use to reproduce the 
error you've encountered? Also, you can always open an issue at 
llvm-d's github repo, that's the easiest way to report problems 
about llvm-d (other than mailing me).


On Wednesday, 2 October 2013 at 10:04:19 UTC, 1100110 wrote:
>
> It's been broken for a while for me.
>
> I tried to figure out what the issue was, but it was over my 
> head...

What exactly has been broken for you? As stated above, I can run 
all the examples fine, but if that is not the case for someone 
else, I need to know about it in order to try and fix it.

On Wednesday, 2 October 2013 at 10:23:55 UTC, Dicebot wrote:
>
> I think in this case reporting to `llvm-d` author makes more 
> sense.
>
> AFAIK "calrama" is common nickname for Moritz Maxeiner, I will 
> send him an e-mail linking this thread.

Thanks for mailing me, I would not have seen this thread here 
otherwise (I usually look at the first pages of "digitalmars.D" 
and "digitalmars.D.announce" every couple of days).