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digitalmars.D.learn - Using bindbc-sdl with D

reply idsize <idouglas3800 gmail.com> writes:
I started learning D a few weeks ago and am enjoying it so far. I 
would like to use SDL with D and found bindbc-sdl, but I cannot 
figure out how to make it work.

 From my understanding, I'll need to use 'dub fetch bindbc-sdl' to 
download it, and then run 'dub build bindbc-sdl' to build it, 
before I can use it. Fetching it works, but it always fails to 
build. I get this error: 'failed launching cl.exe /P 
/Zc:preprocessor /PD /nologo ... '.

Additionally, a more general question about bindbc, is it 
possible to skip using dub altogether? Like would placing the 
bindbc files inside of 'C:\D\dmd2\src\druntime\import' work 
directly?
Mar 11 2023
next sibling parent reply "Richard (Rikki) Andrew Cattermole" <richard cattermole.co.nz> writes:
On 12/03/2023 3:12 PM, idsize wrote:

 I started learning D a few weeks ago and am enjoying it so far. I would 
 like to use SDL with D and found bindbc-sdl, but I cannot figure out how 
 to make it work.


Welcome!


  From my understanding, I'll need to use 'dub fetch bindbc-sdl' to 
 download it, and then run 'dub build bindbc-sdl' to build it, before I 
 can use it. Fetching it works, but it always fails to build. I get this 
 error: 'failed launching cl.exe /P /Zc:preprocessor /PD /nologo ... '.


You don't need to do that, add it as a dependency in your dub package 
and dub will do the rest.

But ugh that error looks weird. That would imply its trying to run the C 
preprocessor for ImportC. That does not sound right at all, I don't see 
any C headers/code in bindbc-sdl repo (not that it needs it). Gonna need 
to see the entire error log for that to know whats going on (and 
possibly the verbose output).


 Additionally, a more general question about bindbc, is it possible to 
 skip using dub altogether? Like would placing the bindbc files inside of 
 'C:\D\dmd2\src\druntime\import' work directly?


Yes, but not that way. Druntime/phobos are both distributed compiled, 
the import directories tell the compiler what has been compiled in and 
allow access to templates defined by the library (which you then compile).

If you add the appropriate versions and copy the files to your project 
directory (including bindbc-loader) that should work however as long as 
you compile it in.
Mar 11 2023
next sibling parent reply "Richard (Rikki) Andrew Cattermole" <richard cattermole.co.nz> writes:
On 12/03/2023 3:24 PM, Richard (Rikki) Andrew Cattermole wrote:

 But ugh that error looks weird. That would imply its trying to run the C 
 preprocessor for ImportC. That does not sound right at all, I don't see 
 any C headers/code in bindbc-sdl repo (not that it needs it). Gonna need 
 to see the entire error log for that to know whats going on (and 
 possibly the verbose output).


Ah huh, there is one!

https://github.com/BindBC/bindbc-sdl/blob/master/source/bindbc/sdl/ctypes.c

That explains it.
Mar 11 2023
parent reply ryuukk_ <ryuukk.dev gmail.com> writes:
On Sunday, 12 March 2023 at 02:59:20 UTC, Richard (Rikki) Andrew 
Cattermole wrote:

 On 12/03/2023 3:24 PM, Richard (Rikki) Andrew Cattermole wrote:

 But ugh that error looks weird. That would imply its trying to 
 run the C preprocessor for ImportC. That does not sound right 
 at all, I don't see any C headers/code in bindbc-sdl repo (not 
 that it needs it). Gonna need to see the entire error log for 
 that to know whats going on (and possibly the verbose output).


 Ah huh, there is one!

 https://github.com/BindBC/bindbc-sdl/blob/master/source/bindbc/sdl/ctypes.c

 That explains it.


So this is a dub issue?

It is able to find the linker, why can't it find the preprocessor?
Mar 11 2023
parent "Richard (Rikki) Andrew Cattermole" <richard cattermole.co.nz> writes:
On 12/03/2023 4:01 PM, ryuukk_ wrote:

 So this is a dub issue?


Nope, dub is doing everything ok, this is for ImportC.


 It is able to find the linker, why can't it find the preprocessor?


Its probably not installed. We don't ship a C toolchain, it uses the 
system one (MSVC, which you would normally get via Visual Studio).
Mar 11 2023
prev sibling parent reply idsize <idouglas3800 gmail.com> writes:
On Sunday, 12 March 2023 at 02:24:31 UTC, Richard (Rikki) Andrew 
Cattermole wrote:

 If you add the appropriate versions and copy the files to your 
 project directory (including bindbc-loader) that should work 
 however as long as you compile it in.


I've never used a package manager before so the entire process of 
using one is still strange to me. When using SDL2 with C, I have 
all of the SDL2 files within my MinGW install. To compile I use 
'gcc example.c -lmingw32 -lSDL2 -lSDL2main'. Could I use a method 
similar to that?

     Also here is the full (but not verbose) error log:
     '''
             Starting Performing "debug" build using 
C:\D\dmd2\windows\bin64\dmd.exe for x86_64.
             Building bindbc-sdl 1.3.0: building configuration 
[staticBC]
         failed launching cl.exe /P /Zc:preprocessor /PD /nologo 
C:\Users\idoug\AppData\Local\dub\packages\bindbc-sdl-1.3.0\bindbc-sdl\source
bindbc\sdl\ctypes.c /FIC:\D\dmd2\windows\bin64\..\..\src\drunt
me\import\importc.h /Fictypes.i
         
C:\Users\idoug\AppData\Local\dub\packages\bindbc-sdl-1.3.0\bindbc-sdl\source\bindbc\s
l\config.d(127,16): Error: C preprocess command cl.exe failed for file
C:\Users\idoug\AppData\Local\dub\packages\bindbc-sdl-1.3.0\bindbc-sdl\source\
indbc\sdl\ctypes.c, exit status 1

Error C:\D\dmd2\windows\bin64\dmd.exe failed with exit code 1.
'''
Mar 11 2023
parent "Richard (Rikki) Andrew Cattermole" <richard cattermole.co.nz> writes:
On 12/03/2023 4:27 PM, idsize wrote:

 On Sunday, 12 March 2023 at 02:24:31 UTC, Richard (Rikki) Andrew 
 Cattermole wrote:

 If you add the appropriate versions and copy the files to your project 
 directory (including bindbc-loader) that should work however as long 
 as you compile it in.


 
 I've never used a package manager before so the entire process of using 
 one is still strange to me. When using SDL2 with C, I have all of the 
 SDL2 files within my MinGW install. To compile I use 'gcc example.c 
 -lmingw32 -lSDL2 -lSDL2main'. Could I use a method similar to that?


Yeah pretty much the same thing in principle.

Pass the D files to the compiler (including the bindings, dynamic 
bindings are not like headers, they load the DLL at runtime not during 
linking like static bindings), tell it the versions needed for the 
bindings and it should work.

When you do a successful build with the verbose flag it'll tell you what 
commands were used to build and link it. That should give you some 
pointers of what is required (although there will be extra 
flags/versions specified that you probably won't need).
Mar 11 2023
prev sibling parent reply ryuukk_ <ryuukk.dev gmail.com> writes:
On Sunday, 12 March 2023 at 02:12:45 UTC, idsize wrote:

 I started learning D a few weeks ago and am enjoying it so far. 
 I would like to use SDL with D and found bindbc-sdl, but I 
 cannot figure out how to make it work.

 From my understanding, I'll need to use 'dub fetch bindbc-sdl' 
 to download it, and then run 'dub build bindbc-sdl' to build 
 it, before I can use it. Fetching it works, but it always fails 
 to build. I get this error: 'failed launching cl.exe /P 
 /Zc:preprocessor /PD /nologo ... '.

 Additionally, a more general question about bindbc, is it 
 possible to skip using dub altogether? Like would placing the 
 bindbc files inside of 'C:\D\dmd2\src\druntime\import' work 
 directly?


Hello, and welcome!

Looks like the new version of that library is broken, i am having 
the same issue

Reverting to previous (1.2.4) one is working (delete the 
dub.selection.json):

Download SDL: 
https://github.com/libsdl-org/SDL/releases/tag/release-2.26.4

And put the dll in your project folder

```json
{
	"name": "hellosdl",
	"dependencies": {
		"bindbc-sdl": "1.2.4",
	},
	"versions": [
		"SDL_2_26"
	],
}

```

```D
import bindbc.sdl;
import core.stdc.stdio;

void main()
{

     // here we load the dll
     auto ret = loadSDL();

     // here handle cases where it failed to load the dll
     if (ret != sdlSupport)
     {
         if (ret == SDLSupport.noLibrary)
         {
             // dll not found
         }
         else if (ret == SDLSupport.badLibrary)
         {
             // wrong DLL, perhaps 32bit vs 64bit?
         }
         return;
     }

     // all good, let's use SDL

     SDL_Window* window = null;
     SDL_Surface* screenSurface = null;
     if (SDL_Init(SDL_INIT_VIDEO) < 0)
     {
         fprintf(stderr, "could not initialize sdl2: %s\n", 
SDL_GetError());
         return;
     }
     window = SDL_CreateWindow("hello_sdl2", 
SDL_WINDOWPOS_UNDEFINED,
             SDL_WINDOWPOS_UNDEFINED, 640, 480, SDL_WINDOW_SHOWN);
     if (window == null)
     {
         fprintf(stderr, "could not create window: %s\n", 
SDL_GetError());
         return;
     }

     screenSurface = SDL_GetWindowSurface(window);
     bool running = true;
     while (running)
     {
         SDL_Event ev;
         while (SDL_PollEvent(&ev))
         {
             switch (ev.type)
             {
             case SDL_QUIT:
                 running = false;
                 break;
             default:
                 break;
             }
         }

         SDL_FillRect(screenSurface, null, 
SDL_MapRGB(screenSurface.format, 0x00, 0x00, 0xFF));
         SDL_UpdateWindowSurface(window);
     }

     SDL_DestroyWindow(window);
     SDL_Quit();
}

```

I filled an issue on the tracker: 
https://github.com/BindBC/bindbc-sdl/issues/50
Mar 11 2023
parent idsize <idouglas3800 gmail.com> writes:
On Sunday, 12 March 2023 at 02:52:27 UTC, ryuukk_ wrote:

 On Sunday, 12 March 2023 at 02:12:45 UTC, idsize wrote:

 [...]


 Hello, and welcome!

 Looks like the new version of that library is broken, i am 
 having the same issue

 [...]


Thanks! It compiled and ran your example successfully.
Mar 11 2023