importc and stb

[bachmeier]

On Thursday, 16 December 2021 at 14:26:42 UTC, bachmeier wrote:
> On Thursday, 16 December 2021 at 10:38:38 UTC, stb wrote:
>> are we going to be able use https://github.com/nothings/stb 
>> with importc?
>> these are header only libraries and i use stb (and similar 
>> libraries) all the time.
>> there is no reason for me to use c/c++ for tools if importc 
>> can pull this off.
>
> I just tried the first three files: stb_c_lexer.h, stb_divide.h 
> and stb_ds.h.
>
> The first two compiled without issues:
>
> ```
> gcc -E -P stb_c_lexer.h > stb_c_lexer_d.c
> ldmd2 -c stb_c_lexer_d.c
> gcc -E -P stb_divide.h > stb_divide_d.c
> ldmd2 -c stb_divide_d.c
> ```
>
> The last gave errors:
>
> ```
> gcc -E -P stb_ds.h > stb_ds_d.c
> ldmd2 -c stb_ds_d.c
> ```
>
> The errors are due to the insertion of stuff in the 
> preprocessing step that's not C11. There are solutions for some 
> of these (such as 
> https://github.com/ibuclaw/importC/blob/main/src/keywords.c.in) 
> but I didn't dig into it any further, since I have never used 
> those libraries. The first error that comes up is due to 
> `__restrict` rather than plain `restrict`.

So over lunch I decided to take another look. I downloaded Ian's 
fixes as fixes.h and then did

```
gcc -E -P stb_ds.h > stb_ds_d.c
gcc -E -P -include fixes.h stb_ds_d.c > stb_ds_d2.c
ldmd2 -c stb_ds_d2.c
```

Compiled without any error messages or warnings.