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digitalmars.D.learn - Mixed language projects (D and C++)

reply Preetpal <preetpal.sohal gmail.com> writes:
I want to reuse existing C++ code in a new project that I am 
writing in D and I want to use D in an existing C++ code base (it 
is not large). I do not anticipate interop being an issue.

I am wondering if mixing D and C++ is a common practice? If it is 
a common practice, is anyone is currently doing this in an open 
source project that I can use as a reference to learn from.

I am also looking to choose a build system that has IDE support 
(I use Emacs but I want to be able to use tooling with support 
for auto-completion). I have used CMake in the past for a couple 
of C++ projects but I do not want to use it for D projects if it 
is not commonly used or supported. The C++ project I have written 
is currently built using Rake (it is basically a Ruby library 
that allows you to write Makefiles in Ruby). All of my D projects 
have basically been single file projects so far.

This is my first post on this forum so I want to introduce 
myself. I am new to the D programming language (I have been using 
it for about a month for minor projects). I replaced an 
AutoHotKey script using the Windows API that I was using for 
maximizing Windows across multiple monitors on Windows 10. I also 
used D lang for processing data (converted data for use in 
another script, checked data invariants) for commercial purposes.
Feb 19 2021
parent reply Max Haughton <maxhaton gmail.com> writes:
On Friday, 19 February 2021 at 09:44:15 UTC, Preetpal wrote:

 I want to reuse existing C++ code in a new project that I am 
 writing in D and I want to use D in an existing C++ code base 
 (it is not large). I do not anticipate interop being an issue.

 [...]


C++ interop is used every day. The LLVM D compiler, ldc, uses it 
to talk to LLVM efficiently.

There are good resources on it on this very website
Feb 19 2021
parent reply Preetpal <preetpal.sohal gmail.com> writes:
On Friday, 19 February 2021 at 10:01:36 UTC, Max Haughton wrote:

 On Friday, 19 February 2021 at 09:44:15 UTC, Preetpal wrote:

 I want to reuse existing C++ code in a new project that I am 
 writing in D and I want to use D in an existing C++ code base 
 (it is not large). I do not anticipate interop being an issue.

 [...]


 C++ interop is used every day. The LLVM D compiler, ldc, uses 
 it to talk to LLVM efficiently.

 There are good resources on it on this very website


I am looking for suggestions on what build system to use. I took 
a look at the LDC project but it looks they are writing their own 
CMake scripts in the repository itself to add support for D to 
CMake. I was hoping there might be something that others were 
using with out of box support for D.
Feb 19 2021
parent reply Max Haughton <maxhaton gmail.com> writes:
On Friday, 19 February 2021 at 10:18:28 UTC, Preetpal wrote:

 On Friday, 19 February 2021 at 10:01:36 UTC, Max Haughton wrote:

 On Friday, 19 February 2021 at 09:44:15 UTC, Preetpal wrote:

 I want to reuse existing C++ code in a new project that I am 
 writing in D and I want to use D in an existing C++ code base 
 (it is not large). I do not anticipate interop being an issue.

 [...]


 C++ interop is used every day. The LLVM D compiler, ldc, uses 
 it to talk to LLVM efficiently.

 There are good resources on it on this very website


 I am looking for suggestions on what build system to use. I 
 took a look at the LDC project but it looks they are writing 
 their own CMake scripts in the repository itself to add support 
 for D to CMake. I was hoping there might be something that 
 others were using with out of box support for D.


I would keep it simple and use the dub pregenerate step to run 
any old C++ build process then link as usual.
Feb 19 2021
parent Preetpal <preetpal.sohal gmail.com> writes:
On Friday, 19 February 2021 at 10:21:29 UTC, Max Haughton wrote:

 On Friday, 19 February 2021 at 10:18:28 UTC, Preetpal wrote:

 On Friday, 19 February 2021 at 10:01:36 UTC, Max Haughton 
 wrote:

 On Friday, 19 February 2021 at 09:44:15 UTC, Preetpal wrote:

 [...]


 C++ interop is used every day. The LLVM D compiler, ldc, uses 
 it to talk to LLVM efficiently.

 There are good resources on it on this very website


 I am looking for suggestions on what build system to use. I 
 took a look at the LDC project but it looks they are writing 
 their own CMake scripts in the repository itself to add 
 support for D to CMake. I was hoping there might be something 
 that others were using with out of box support for D.


 I would keep it simple and use the dub pregenerate step to run 
 any old C++ build process then link as usual.


Thanks for the advice, that's what I am going to do for now.
Feb 19 2021