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digitalmars.D.learn - Including C sources in a DUB project

reply Alexander Zhirov <azhirov1991 gmail.com> writes:
I'm sure there is such a topic on the forum, but after scrolling 
through the search, I didn't find anything. The bottom line is 
that I want to enable compilation of C sources in DUB and then 
build the project with the connection of libraries. I would like 
to see an example of such a `dub.json` project.

Enable libraries (flags) `-lm`, `-lX11`, `-lXrandr`.


```sh
{
	"name" : "test",
	"description" : "Test project",
	"dependencies" : {
	}
}
```

It turns out to compile everything manually, but I would like to 
do it all through the dub project.


```sh
.
├── dub.json
└── src
     ├── app.d
     └── main.c
```
May 04 2022
next sibling parent reply "H. S. Teoh" <hsteoh quickfur.ath.cx> writes:
On Thu, May 05, 2022 at 06:05:55AM +0000, Alexander Zhirov via
Digitalmars-d-learn wrote:

 I'm sure there is such a topic on the forum, but after scrolling
 through the search, I didn't find anything. The bottom line is that I
 want to enable compilation of C sources in DUB and then build the
 project with the connection of libraries. I would like to see an
 example of such a `dub.json` project.
 
 Enable libraries (flags) `-lm`, `-lX11`, `-lXrandr`.


I don't know how to do it using dub, but you could use pragma(lib) in
one (or more) of your source files as a workaround:

	pragma(lib, "m");
	pragma(lib, "X11");
	pragma(lib, "Xrandr");


T

-- 
MACINTOSH: Most Applications Crash, If Not, The Operating System Hangs
May 05 2022
parent Alexander Zhirov <azhirov1991 gmail.com> writes:
On Thursday, 5 May 2022 at 16:23:18 UTC, H. S. Teoh wrote:


 I don't know how to do it using dub, but you could use 
 pragma(lib) in
 one (or more) of your source files as a workaround:

 	pragma(lib, "m");
 	pragma(lib, "X11");
 	pragma(lib, "Xrandr");


I remember a long time ago, when I first started learning D, I 
set up a project in dub.json so that he compiled the sources 
written in C, linked the necessary libraries and then assembled 
the project in D along with the C object files. How to do it now 
- I have already forgotten.
May 05 2022
prev sibling parent reply Alexander Zhirov <azhirov1991 gmail.com> writes:
On Thursday, 5 May 2022 at 06:05:55 UTC, Alexander Zhirov wrote:

 It turns out to compile everything manually, but I would like 
 to do it all through the dub project.


Does anyone have examples of such a configuration?
May 06 2022
parent reply Alexander Zhirov <azhirov1991 gmail.com> writes:
On Friday, 6 May 2022 at 11:31:27 UTC, Alexander Zhirov wrote:

 Does anyone have examples of such a configuration?


I managed to do it like this:

```js
{
     "name": "app",
     "authors": [
         "Alexander Zhirov"
     ],
     "description": "MyProgram",
     "dflags": [
         "-i"
     ],
     "libs": [
         "pq"
     ],
     "preBuildCommands": [
         "gcc -Os -c c/*.c -o obj/ip_addresses.o"
     ],
     "sourceFiles": [
         "obj/*.o"
     ]
}
```
May 09 2022
parent reply jmh530 <john.michael.hall gmail.com> writes:
On Monday, 9 May 2022 at 09:17:06 UTC, Alexander Zhirov wrote:

 [snip]


It would be nice if dub included a directory of example 
configurations for common issues like this.
May 10 2022
parent reply Dennis <dkorpel gmail.com> writes:
On Tuesday, 10 May 2022 at 17:19:23 UTC, jmh530 wrote:

 It would be nice if dub included a directory of example 
 configurations for common issues like this.


It has an example directory: 
https://github.com/dlang/dub/tree/master/examples

If your configuration is missing, you could make a Pull Request 
to add it.
May 10 2022
next sibling parent jmh530 <john.michael.hall gmail.com> writes:
On Tuesday, 10 May 2022 at 19:13:21 UTC, Dennis wrote:

 [snip]

 It has an example directory: 
 https://github.com/dlang/dub/tree/master/examples

 If your configuration is missing, you could make a Pull Request 
 to add it.


So it does. Thanks.

We might also link to that on the dub.pm website.
May 10 2022
prev sibling parent reply Alexander Zhirov <azhirov1991 gmail.com> writes:
On Tuesday, 10 May 2022 at 19:13:21 UTC, Dennis wrote:

 It has an example directory: 
 https://github.com/dlang/dub/tree/master/examples


And if there are two compilers in the system - `dmd` and `ldc`, 
which compiler chooses `dub.json`? And how do I specify the 
specific compiler I want?
May 10 2022
next sibling parent jmh530 <john.michael.hall gmail.com> writes:
On Tuesday, 10 May 2022 at 20:50:12 UTC, Alexander Zhirov wrote:

 On Tuesday, 10 May 2022 at 19:13:21 UTC, Dennis wrote:

 It has an example directory: 
 https://github.com/dlang/dub/tree/master/examples


 And if there are two compilers in the system - `dmd` and `ldc`, 
 which compiler chooses `dub.json`? And how do I specify the 
 specific compiler I want?


Following the command line documentation [1], you can use the 
--compiler option to select which to use. You can make the 
dub.json do different things depending on the target and/or 
compiler, but the default works fine regardless if you're doing 
something simple.

https://dub.pm/commandline.html
May 10 2022
prev sibling parent reply Dennis <dkorpel gmail.com> writes:
On Tuesday, 10 May 2022 at 20:50:12 UTC, Alexander Zhirov wrote:

 And if there are two compilers in the system - `dmd` and `ldc`, 
 which compiler chooses `dub.json`?


It depends on whether your DMD or LDC installation comes first in 
your PATH environment variable. Both ship with a `dub` executable 
that uses their compiler as default.


 And how do I specify the specific compiler I want?


On the command line you can use the `--compiler=dmd` flag. You 
can't specify this in the dub.json, since your project is 
supposed to be compiler agnostic.
May 10 2022
parent reply Alexander Zhirov <azhirov1991 gmail.com> writes:
On Tuesday, 10 May 2022 at 22:12:52 UTC, Dennis wrote:

 It depends on whether your DMD or LDC installation comes first 
 in your PATH environment variable. Both ship with a `dub` 
 executable that uses their compiler as default.


I came across something else like this. Created a 
`dub.settings.json` file in the dub project, but still requires 
`dmd`:

```sh
$ dub
Performing "debug" build using dmd for x86_64.
app ~master: building configuration "application"...
Running pre-build commands...
Error: unrecognized switch '-Os'
        run `dmd` to print the compiler manual
        run `dmd -man` to open browser on manual
dmd failed with exit code 1.
```

*dub.settings.json*:

```js
{
	"defaultArchitecture": "x86_64",
	"defaultCompiler": "ldc"
}
```
May 10 2022
parent Alexander Zhirov <azhirov1991 gmail.com> writes:
On Wednesday, 11 May 2022 at 05:11:10 UTC, Alexander Zhirov wrote:


 dub.settings.json


It's written about it [here](https://dub.pm/settings)
May 10 2022