zBench

Install

You can use zig fetch to conveniently set the hash in the build.zig.zon file and update an existing dependency.

Run the following command to fetch the zBench package:

zig fetch https://github.com/hendriknielaender/zbench/archive/<COMMIT>.tar.gz --save

Using zig fetch simplifies managing dependencies by automatically handling the package hash, ensuring your build.zig.zon file is up to date.

Option 1 (build.zig.zon)

1. Declare zBench as a dependency in build.zig.zon:

   .{
       .name = "my-project",
       .version = "1.0.0",
       .paths = .{""},
       .dependencies = .{
   +       .zbench = .{
   +           .url = "https://github.com/hendriknielaender/zbench/archive/<COMMIT>.tar.gz",
   +       },
       },
   }
   

2. Add the module in build.zig:

   const std = @import("std");
   
   pub fn build(b: *std.Build) void {
       const target = b.standardTargetOptions(.{});
       const optimize = b.standardOptimizeOption(.{});
   
   +   const opts = .{ .target = target, .optimize = optimize };
   +   const zbench_module = b.dependency("zbench", opts).module("zbench");
   
       const exe = b.addExecutable(.{
           .name = "test",
           .root_source_file = b.path("src/main.zig"),
           .target = target,
           .optimize = optimize,
       });
   +   exe.root_module.addImport("zbench", zbench_module);
       exe.install();
   
       ...
   }
   

3. Get the package hash:

   $ zig build
   my-project/build.zig.zon:6:20: error: url field is missing corresponding hash field
           .url = "https://github.com/hendriknielaender/zbench/archive/<COMMIT>.tar.gz",
                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   note: expected .hash = "<HASH>",
   

4. Update build.zig.zon package hash value:

   .{
       .name = "my-project",
       .version = "1.0.0",
       .paths = .{""},
       .dependencies = .{
           .zbench = .{
               .url = "https://github.com/hendriknielaender/zbench/archive/<COMMIT>.tar.gz",
   +           .hash = "<HASH>",
           },
       },
   }
   

Option 2 (git submodule)

On your project root directory make a directory name libs.

• Run git submodule add https://github.com/hendriknielaender/zBench libs/zbench
• Then add the module into your build.zig

exe.root_module.addAnonymousImport("zbench", .{
    .root_source_file = b.path("libs/zbench/zbench.zig"),
});

Now you can import like this:

const zbench = @import("zbench");

Further Reading

For more information on the Zig build system and useful tricks, check out these resources:

• Zig Build System
• Build System Tricks

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