ImportC question

[DLearner]

On Wednesday, 30 October 2024 at 09:21:55 UTC, ryuukk_ wrote:
> On Tuesday, 29 October 2024 at 20:26:58 UTC, DLearner wrote:
>> On Tuesday, 29 October 2024 at 18:57:15 UTC, Salih Dincer 
>> wrote:
>>> On Monday, 28 October 2024 at 20:56:03 UTC, DLearner wrote:
>>>> Just trying ImportC under Windows 10:
>>>> ```c
>>>> #include <stdio.h>
>>>>
>>>> int main()
>>>> {
>>>>    printf("Hello world.\n");
>>>>    return 0;
>>>> }
>>>> ```
>>>>
>>>> Produces
>>>> ```
>>>> dmd hello.c
>>>> failed launching cl.exe /P /Zc:preprocessor /PD /nologo 
>>>> hello.c 
>>>> /FIC:\D\dmd2\windows\bin64\..\..\src\druntime\import\importc.h /Fihello.i
>>>> Error: C preprocess command cl.exe failed for file hello.c, 
>>>> exit status 1
>>>> ```
>>>
>>> DMD Compiler version?
>>>
>>> SDB at 79
>>
>> ```
>> C:\Users\SoftDev>dmd
>> DMD64 D Compiler v2.106.0-dirty
>> ```
>
> update your compiler, latest version is: 2.109.1
>
>
> then, and only then you can start wondering what's broken

Now upgraded.

1. I noticed that the installation process also installed _both_ 
Visual Studio 2019 _and_ Visual Studio 2022.  Is one of these 
preferred?

2. With 2019:
```
C:\Program Files (x86)\Microsoft Visual Studio\2019\Community>dmd 
C:\Users\SoftDev\Documents\BDM\Projects\IT\C\hello.c

C:\Program Files (x86)\Microsoft Visual Studio\2019\Community>
```
ie silence (and no 'hello' files produced either).

3. With 2022:

```
C:\Program Files\Microsoft Visual Studio\2022\Community>dmd 
C:\Users\SoftDev\Documents\BDM\Projects\IT\C\hello.c
C:\Program Files (x86)\Windows 
Kits\10\include\10.0.22000.0\shared\driverspecs.h(381): warning 
C4005: '_Kernel_acquires_resource_': macro redefinition
C:\Program Files (x86)\Windows 
Kits\10\include\10.0.22000.0\shared\no_sal2.h(876): note: see 
previous definition of '_Kernel_acquires_resource_'
C:\Program Files (x86)\Windows 
Kits\10\include\10.0.22000.0\shared\driverspecs.h(391): warning 
C4005: '_Kernel_releases_resource_': macro redefinition
```
and a large number of similar messages.