First opengl test.
Link library.
```
import std.stdio;
import bindc.opengl;
void main()
{
writeln("Edit source/app.d to start your project.");
}
x: /home/x/Src/languages/dlang/opengl >
```
dub.json:
```
"authors": [
"x"
],
"copyright": "Copyright © 2021, x",
"dependencies": {
"bindbc-opengl": "~>0.16.0",
},
"description": "A minimal D application.",
"license": "proprietary",
"name": "opengl"
}
```
dub build
```
dub build
Performing "debug" build using /usr/local/bin/ldc2 for x86_64.
bindbc-loader 0.3.2: target for configuration "noBC" is up to
date.
bindbc-opengl 0.16.0: target for configuration "dynamic" is up to
date.
opengl ~master: building configuration "application"...
source/app.d(2,8): Error: module opengl is in file
'bindc/opengl.d' which cannot be read
import path[0] = source/
import path[1] =
/home/x/.dub/packages/bindbc-opengl-0.16.0/bindbc-opengl/source/
import path[2] =
/home/x/.dub/packages/bindbc-loader-0.3.2/bindbc-loader/source/
import path[3] = /usr/local/include/d
/usr/local/bin/ldc2 failed with exit code 1.
```
