Interop with C++ library - what toolchain do you use?

Sep 17, 2014

Sep 18, 2014

So I am trying to use a C++ library with D. My toolchain is currently Visual Studio 2013 with Visual D, using the DMD compiler. When trying to link, I obviously ran into the OMF vs. COFF issue, which makes using the C++ library a bit of a trial to say the least (I played around with some lib format converters but perhaps unsurprisingly this led to somewhat unpredictable behavior.) I'd like to fix up my toolchain to avoid having this issue. For those of you who are on Windows and who do D and C++ interop, what toolchain have you had success with? Additionally, I have heard tell that D now allows calling C++ non-virtual class methods but I have not found documentation on how to make this work (how do I define the C++ class layout in D - I know how to do it for vtable entries but not non-virtual methods.) Pointers to docs or samples would be much appreciated. Thanks!

On 18/09/14 00:28, Cliff wrote: > So I am trying to use a C++ library with D. My toolchain is > currently Visual Studio 2013 with Visual D, using the DMD > compiler. When trying to link, I obviously ran into the OMF vs. > COFF issue DMD has always produce COFF for Windows 64bit. Recently it also got support for COFF in 32bit. I don't think this has been released yet, but it's available in git master. -- /Jacob Carlborg

On Wednesday, 17 September 2014 at 22:28:44 UTC, Cliff wrote: > So I am trying to use a C++ library with D. My toolchain is > currently Visual Studio 2013 with Visual D, using the DMD > compiler. When trying to link, I obviously ran into the OMF vs. > COFF issue, which makes using the C++ library a bit of a trial to > say the least (I played around with some lib format converters > but perhaps unsurprisingly this led to somewhat unpredictable > behavior.) I'd like to fix up my toolchain to avoid having this > issue. > > For those of you who are on Windows and who do D and C++ interop, > what toolchain have you had success with? > > Additionally, I have heard tell that D now allows calling C++ > non-virtual class methods but I have not found documentation on > how to make this work (how do I define the C++ class layout in D > - I know how to do it for vtable entries but not non-virtual > methods.) Pointers to docs or samples would be much appreciated. > > Thanks! I am using Visual Studio 2012 (in x64 bit mode that is). Binary D distribution also comes with phobos64.lib that C++ executable has to link. With VisualD plugin you can just add D static library project to the solution and the link C++ exe to it. It is very easy to make back-and-forth function calls between C++/D. I recommend Adam Ruppe's excellent "D Cookbook" Integration chapter on the details on how to expose this for cross-lang usage. It does not all work correctly tho. I reported my issues on "learn" subforum but didn't get much help. In short: it seems not everything in D run-time (Phobos) gets properly initialized even after successful rt_init() call. In my case simple call to writeln() causes a crash because stdout is not properly initialized on D'd side. Happy hybridizing!