[Issue 12723] New: Support compiling C/C++ files in D projects

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=12723

          Issue ID: 12723
           Summary: Support compiling C/C++ files in D projects
           Product: D
           Version: D2
          Hardware: All
                OS: Windows
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: VisualD
          Assignee: nobody at puremagic.com
          Reporter: turkeyman at gmail.com

It would be nice if VisualD projects could support compiling C/C++ code in
addition to D code when .c/.cpp files are added to the project, in just the
same way that C++ projects fall back to C mode when compiling .c files.

It is common that a .c file finds its way into D projects. Druntime has a .c
and a .asm file. phobos compiles zlib together with the rest of the D code.

The idea is not to support full blown C projects with all the bells and
whistles, but to make it possible to express such a project where there is just
a couple of C files along with the majority D code. It's very awkward to split
these up into multiple project files in Visual Studio.

I suggest:
 Win64 - invoke MSC, and then supply the result .obj file to DMD as it builds
the D code.
 Win32 - invoke DMC, same story.
 GCC - GCC is always present alongside GDC, and most of the same build flags
are supported between compilers.
 LDC - invoke clang?

I think as a goal, it should be possible to express druntime and phobos in a
visualdproj without any awkward mischief.

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