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To create a D package, you first need to have dub utility (plus D compiler, dmd). You can download pre-compiled dub binaries from here.
cd ~
mkdir dlibs
cd dlibs
dub init mypack #this will create a skeleton for your package: mypack
cd mypack
cat dub.sdl #below is contents of your package
name "mypack"
description "A minimal D application."
copyright "Copyright © 2016, mahdix"
authors "root"
version "1.0.0"
targetType "library"
#the package will have only one source file, located inside source directory
cat source/myfile.d
int add(int x,int y) {
return x+y;
}
#this will compile your package
#although its not necessary but ensures that everything is allright.
dub
Performing "debug" build using dmd for x86_64.
mypack ~master: target for configuration "library" is up to date.
Target is a library. Skipping execution.
To use a D package, we will create an application (which is itself a D package) and define the package we need as it’s dependency. But before that, we need to inform dub where the packages are (which is inside ~/dlibs).
dub add-path ~/dlibs dub list #this will list all known packages to dub, which will include mypack too
Now lets create a basic project that uses the package:
cd ~
dub init project1
cd project1
cat dub.json #config file can be either sdl, they are equivalent
{
"name": "myproject",
"description": "A little web service of mine.",
"authors": ["Mahdi Mohammadi"],
"homepage": "http://myproject.example.com",
"license": "GPL-2.0",
"targetType": "executable",
"dependencies": {
"mypack": "*"
}
}
#as you notice, we specify "*" as version number of mypack which means: any version
cat source/test.d #this is our only source file which uses add method of mypack
import std.stdio;
import myfile;
void main() {
int x = add(1,4);
writefln("%d", x);
}
#now lets build project1
pwd
~/project1
dub
Performing "debug" build using dmd for x86_64.
mypack ~master: target for configuration "library" is up to date.
myproject ~master: target for configuration "application" is up to date.
To force a rebuild of up-to-date targets, run again with --force.
Running ./myproject
5
#5 is output of the call to add function in mypack