I would like to use ImportC to automatically import a C header into my D project. I've been using Dstep so far which works ok, but requires some manual fixes to get the resulting D file to compare and it doesn't let me to just drop the C header file.

I created a fresh dub project to try. I try to import this header https://github.com/webgpu-native/webgpu-headers/blob/main/webgpu.h . I put webgpu.h file next to app.d.

My code is:

import std.stdio;
import webgpu;

void main()
{
}

it builds.

Then I tried to output one of the enums to see if it works:

import std.stdio;
import webgpu;

void main()
{
	writeln(WGPUBlendFactor_Dst);
}

and it says:

Starting Performing "debug" build using C:\D\dmd2\windows\bin64\dmd.exe for x86_64.
Building test_importd ~master: building configuration [application]
source\app.d(6,10): Error: undefined identifier `WGPUBlendFactor_Dst`
Error C:\D\dmd2\windows\bin64\dmd.exe failed with exit code 1.

I tried to do the other commandline but I get this error instead:

C:\Users\haxx\Desktop\dev\test_importd\source>dmd -c webgpu.c -Hf=webgpu.di
C:\D\dmd2\windows\bin64\..\..\src\druntime\import\importc.h(134): fatal error C1034:
sal.h: no include path set
Error: C preprocess command C:\Program Files (x86)\Microsoft Visual
Studio\2019\Community\VC\Tools\MSVC\14.29.30133\bin\HostX64\x64\cl.exe failed for file
webgpu.c, exit status 2

On Wednesday, 10 January 2024 at 23:36:33 UTC, JN wrote:

It was already done. Use it https://code.dlang.org/packages/wgpu-d
Don't reinvent the wheel :)

You need to use a .c file that include it

--- webgpu.c

#include "webgpu.h"

--- app.d

import std.stdio;
import webgpu;

void main()
{
    writeln(WGPUBlendFactor_Dst);
}

result:

$ dmd -run app.d webgpu.c
WGPUBlendFactor_Dst

On Thursday, 11 January 2024 at 15:18:08 UTC, Sergey wrote:

or if you push a package atleast document the code or give example
D is not like rust where you can just dive into a lib without docs or example

On Friday, 12 January 2024 at 11:06:39 UTC, Bkoie wrote:

Not my package, but I see it has several separate sub-repos for examples:
This package provides sub packages which can be used individually:

wgpu-d:enumerate - Enumerate GPU adapters example
wgpu-d:headless - Headless (windowless) rendering example
wgpu-d:triangle - Triangle (windowed) example
wgpu-d:cube - Cube (windowed) example