如何从Vala编译器生成GIR文件?

问题描述

我正在尝试使用带有gobject内省的pygi创建到vala库的python绑定.但是，我在生成GIR文件时遇到了麻烦(我打算随后将其编译为typelib文件).根据文档，valac应该支持生成GIR文件.

I am trying to create python bindings to a vala library using pygi with gobject introspection. However, I am having trouble generating the GIR files (that I am planning to compile to typelib files subsequently). According to the documentation valac should support generating GIR files.

编译以下内容

helloworld.vala

public struct Point {
    public double x;
    public double y;
}

public class Person {

    public int age = 32;

    public Person(int age) {
        this.age = age;
    }

}

public int main() {

    var p = Point() { x=0.0, y=0.1 };
    stdout.printf("%f %f\n", p.x, p.y);

    var per = new Person(22);
    stdout.printf("%d\n", per.age);

    return 0;

}

使用命令

valac helloworld.vala --gir=Hello-1.0.gir

不会像预期的那样创建Hello-1.0.gir文件.如何生成gir文件?

doesn't create the Hello-1.0.gir file as one would expect. How can I generate the gir file?

推荐答案

要生成GIR，必须将要导出的函数放在同一命名空间下

To generate the GIR one has to put the functions to be exported under the same namespace

hello.vala

namespace Hello {
    public struct Point {
        public double x;
        public double y;
    }

    public class Person {

        public int age = 32;

        public Person(int age) {
            this.age = age;
        }
    }
}

public int main() {

    var p = Hello.Point() { x=0.0, y=0.1 };
    stdout.printf("%f %f\n", p.x, p.y);

    var per = new Hello.Person(22);
    stdout.printf("%d\n", per.age);

    return 0;

}

，然后运行以下命令.

and then run the following command.

valac hello.vala --gir=Hello-1.0.gir --library Hello-1.0

这将在当前目录中生成一个gir和一个vapi文件.

This will generate a gir and a vapi file in the current directory.

然后生成typelib文件，需要运行

Then to generate the typelib file, one needs to run

g-ir-compiler --shared-library=hello Hello-1.0.gir -o Hello-1.0.typelib

假定共享库已编译为libhello.so

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