On Saturday, 12 November 2022 at 13:46:27 UTC, qua wrote:
> This is supposed to work, right?

No, it isn't. And it probably never will.

importC looks for a .c file in the current directory. It is that .c file's responsibility to #include whatever .h files you want.

On Saturday, 12 November 2022 at 14:14:06 UTC, Adam D Ruppe wrote:
> No, it isn't. And it probably never will.
>
> importC looks for a .c file in the current directory. It is that .c file's responsibility to #include whatever .h files you want.

Okay, thanks, got it. However, I'm still having issues to get it to compile.
I have tried the example in the importc page and it compiles (and works) well. However, I can't get any example with `#include` to compile, including the simple hello.c in the importc page:

```
#include <stdio.h>
int main()
{
  printf("hello world\n");
  return 0;
}
```

I get the following errors:

```
hello.c(1): Error: identifier or `(` expected
hello.c(5): Error: identifier or `(` expected
hello.c(6): Error: identifier or `(` expected
```

Do I have to do anything else? I've read that importc doesn't have a preprocessor and I assume it is related to that, however "ImportC can automatically run the C preprocessor associated with the Associated C Compiler". Is it necessary to enable or specify it in some way?
Thanks for your help.

On Saturday, 12 November 2022 at 14:39:14 UTC, qua wrote:
> Do I have to do anything else? I've read that importc doesn't have a preprocessor and I assume it is related to that, however "ImportC can automatically run the C preprocessor associated with the Associated C Compiler".

I still don't think that's been released yet, so if you aren't on the git master or at least the latest beta build it isn't going to work. Which dmd version are you running?

On Saturday, 12 November 2022 at 14:57:23 UTC, Adam D Ruppe wrote:
> I still don't think that's been released yet, so if you aren't on the git master or at least the latest beta build it isn't going to work. Which dmd version are you running?

I was running 2.098, I have just installed 2.100.2, which does say that use of #include is not supported.
I have tried too to preprocess hello.c with `gcc -E`, but dmd is also unable to compile it preprocessed (with errors such as

/usr/include/stdio.h(246): Error: found `__filename` when expecting `,`

).
Is there any reasonably simple way to compile files such as this hello.c, or is it not ready yet? I'm not an experienced programmer, so I mostly want to know if I'm doing something wrong or if there's an alternative that doesn't require manual translations from C to D.

On Saturday, 12 November 2022 at 15:08:22 UTC, qua wrote:
> On Saturday, 12 November 2022 at 14:57:23 UTC, Adam D Ruppe wrote:
>> I still don't think that's been released yet, so if you aren't on the git master or at least the latest beta build it isn't going to work. Which dmd version are you running?
>
> I was running 2.098, I have just installed 2.100.2, which does say that use of #include is not supported.
> I have tried too to preprocess hello.c with `gcc -E`, but dmd is also unable to compile it preprocessed (with errors such as
>
> /usr/include/stdio.h(246): Error: found `__filename` when expecting `,`
>
> ).
> Is there any reasonably simple way to compile files such as this hello.c, or is it not ready yet? I'm not an experienced programmer, so I mostly want to know if I'm doing something wrong or if there's an alternative that doesn't require manual translations from C to D.

You're going to need to use the nightly from here: https://github.com/dlang/dmd/releases/tag/nightly

While a lot of progress has been made, it's definitely not finished, so you may still encounter errors here and there.

On Saturday, 12 November 2022 at 15:13:36 UTC, bachmeier wrote:
> You're going to need to use the nightly from here: https://github.com/dlang/dmd/releases/tag/nightly
>
> While a lot of progress has been made, it's definitely not finished, so you may still encounter errors here and there.

Thanks! Just installed the nightly version and it works as expected.