Re: ImportC issue?
On Wednesday, 19 April 2023 at 14:42:44 UTC, bachmeier wrote:
[...]
My understanding (from my occasional use of Windows) is that
DMD installs the Community Edition of Visual Studio. That
should solve your original issue, and you shouldn't need to
mess with sppn.exe.
Well it took a little while, but I can confirm that if you have a
D function like:
```
extern(C) void DCallee() {
import core.stdc.stdio : printf;
printf("Entered DCallee.\n");
printf("Exiting DCallee.\n");
}
```
called from a C function like:
```
// C Master calling D (under -betterC restrictions).
#include
extern void DCallee();
int main()
{
printf("MastC Entered.\n");
DCallee();
printf("MastC Exiting.\n");
return 0;
}
```
Where the compilation is run from the batch file:
```
Rem Compile, link and run batch file.
IF EXIST .\DCallee.exe del .\DCallee.exe
IF EXIST .\DCallee.map del .\DCallee.map
IF EXIST .\DCallee.obj del .\DCallee.obj
IF EXIST .\MastC.exe del .\MastC.exe
IF EXIST .\MastC.map del .\MastC.map
IF EXIST .\MastC.obj del .\MastC.obj
dmd -m32omf -betterC -c DCallee.d
dmc MastC.c DCallee.obj
MastC.exe
Rem Exited compile, link and run batch file.
```
Then everything runs properly.
As an aside, it was a surprise to me to discover that the order
of the file names in the
dmc line was significant, bearing in mind MastC.c contains a
'main' function, and DCallee.d does not.
As a further aside, I do recall the installer loading Visual
Studio, but it didn't seem to help.
Re: ImportC issue?
On Wednesday, 19 April 2023 at 13:11:45 UTC, DLearner wrote: On Wednesday, 19 April 2023 at 12:09:44 UTC, Richard (Rikki) Andrew Cattermole wrote: On 20/04/2023 12:07 AM, DLearner wrote: Error: C preprocess command sppn.exe failed for file ex01.c, exit status 1 Did you verify that sppn is accessible in that shell? As in run it, can it be found? If not its just a PATH variable issue. SPPN.exe not visible from that command prompt, but neither (using File Explorer) anywhere on the C: drive (lots of SPPNP.DLL's, in various Windows locations). If SPPN.exe essential to a component of DMD, was it not downloaded with it (and PATH modified to point to it), by the installer? My understanding (from my occasional use of Windows) is that DMD installs the Community Edition of Visual Studio. That should solve your original issue, and you shouldn't need to mess with sppn.exe.
Re: ImportC issue?
On 20/04/2023 1:11 AM, DLearner wrote: If SPPN.exe essential to a component of DMD, was it not downloaded with it (and PATH modified to point to it), by the installer? It is not an essential component of dmd. It is one option in the usage of an experimental feature inside of dmd that is not ready for general use.
Re: ImportC issue?
On Wednesday, 19 April 2023 at 12:09:44 UTC, Richard (Rikki) Andrew Cattermole wrote: On 20/04/2023 12:07 AM, DLearner wrote: Error: C preprocess command sppn.exe failed for file ex01.c, exit status 1 Did you verify that sppn is accessible in that shell? As in run it, can it be found? If not its just a PATH variable issue. SPPN.exe not visible from that command prompt, but neither (using File Explorer) anywhere on the C: drive (lots of SPPNP.DLL's, in various Windows locations). If SPPN.exe essential to a component of DMD, was it not downloaded with it (and PATH modified to point to it), by the installer?
Re: ImportC issue?
On 20/04/2023 12:07 AM, DLearner wrote: Error: C preprocess command sppn.exe failed for file ex01.c, exit status 1 Did you verify that sppn is accessible in that shell? As in run it, can it be found? If not its just a PATH variable issue.
Re: ImportC issue?
On Wednesday, 19 April 2023 at 11:50:28 UTC, bachmeier wrote: [...] Did you use the switch `-m32omf`? https://dlang.org/spec/importc.html#auto-cpp No so following the references I tried every preprocessor option I could find: ``` C:\Users\SoftDev\Documents\BDM\D\ImportC>dmd ex01.c -m32omf failed launching sppn.exe ex01.c -HIC:\D\dmd2\windows\bin64\..\..\src\druntime\import\importc.h -ED -oex01.i Error: C preprocess command sppn.exe failed for file ex01.c, exit status 1 C:\Users\SoftDev\Documents\BDM\D\ImportC>dmd ex01.c -c -m32omf failed launching sppn.exe ex01.c -HIC:\D\dmd2\windows\bin64\..\..\src\druntime\import\importc.h -ED -oex01.i Error: C preprocess command sppn.exe failed for file ex01.c, exit status 1 C:\Users\SoftDev\Documents\BDM\D\ImportC>dmd ex01.c -c -m32mscoff failed launching cl.exe /P /Zc:preprocessor /PD /nologo ex01.c /FIC:\D\dmd2\windows\bin64\..\..\src\druntime\import\importc.h /Fiex01.i Error: C preprocess command cl.exe failed for file ex01.c, exit status 1 C:\Users\SoftDev\Documents\BDM\D\ImportC>dmd ex01.c -c -m64 failed launching cl.exe /P /Zc:preprocessor /PD /nologo ex01.c /FIC:\D\dmd2\windows\bin64\..\..\src\druntime\import\importc.h /Fiex01.i Error: C preprocess command cl.exe failed for file ex01.c, exit status 1 ``` Unfortunately all options failed.
Re: ImportC issue?
On Wednesday, 19 April 2023 at 10:21:22 UTC, DLearner wrote:
C source ex01.c:
```
#include
int main()
{
printf("hello world\n");
return 0;
}
```
'dmc ex01.c' produces message:
```
link ex01,,,user32+kernel32/noi;
```
but does generate .obj, .map and .exe files,
and the exe executes properly.
However, trying to use ImportC via 'dmd ex01.c' produces
messages:
```
failed launching cl.exe /P /Zc:preprocessor /PD /nologo ex01.c
/FIC:\D\dmd2\windows\bin64\..\..\src\druntime\import\importc.h
/Fiex01.i
Error: C preprocess command cl.exe failed for file ex01.c, exit
status 1
```
This behaviour was repeated after a complete fresh
re-installation of dmd & dmc from the website.
Did you use the switch `-m32omf`?
https://dlang.org/spec/importc.html#auto-cpp
Re: ImportC issue?
Yeah cl is the MSVC compiler being used for preprocessing. So for whatever reason its not using dmc, hence the error.
ImportC issue?
C source ex01.c:
```
#include
int main()
{
printf("hello world\n");
return 0;
}
```
'dmc ex01.c' produces message:
```
link ex01,,,user32+kernel32/noi;
```
but does generate .obj, .map and .exe files,
and the exe executes properly.
However, trying to use ImportC via 'dmd ex01.c' produces messages:
```
failed launching cl.exe /P /Zc:preprocessor /PD /nologo ex01.c
/FIC:\D\dmd2\windows\bin64\..\..\src\druntime\import\importc.h
/Fiex01.i
Error: C preprocess command cl.exe failed for file ex01.c, exit
status 1
```
This behaviour was repeated after a complete fresh
re-installation of dmd & dmc from the website.
