zahl

build.zig (3967B)

---

 const std = @import("std");
 
 // Although this function looks imperative, note that its job is to
 // declaratively construct a build graph that will be executed by an external
 // runner.
 pub fn build(b: *std.Build) void {
     // Standard target options allows the person running `zig build` to choose
     // what target to build for. Here we do not override the defaults, which
     // means any target is allowed, and the default is native. Other options
     // for restricting supported target set are available.
     const target = b.standardTargetOptions(.{});
 
     // Standard optimization options allow the person running `zig build` to select
     // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall. Here we do not
     // set a preferred release mode, allowing the user to decide how to optimize.
     const optimize = b.standardOptimizeOption(.{});
 
     const lib = b.addStaticLibrary(.{
         .name = "zahl",
         // In this case the main source file is merely a path, however, in more
         // complicated build scripts, this could be a generated file.
         .root_source_file = b.path("src/root.zig"),
         .target = target,
         .optimize = optimize,
     });
 
     // This declares intent for the library to be installed into the standard
     // location when the user invokes the "install" step (the default step when
     // running `zig build`).
     b.installArtifact(lib);
 
     const exe = b.addExecutable(.{
         .name = "zahl",
         .root_source_file = b.path("src/main.zig"),
         .target = target,
         .optimize = optimize,
     });
     exe.addCSourceFile(.{ .file = b.path("src/crossline.c"), .flags = &.{} });
     exe.addIncludePath(b.path("src"));
     exe.linkLibC();
 
     // This declares intent for the executable to be installed into the
     // standard location when the user invokes the "install" step (the default
     // step when running `zig build`).
     b.installArtifact(exe);
 
     // This *creates* a Run step in the build graph, to be executed when another
     // step is evaluated that depends on it. The next line below will establish
     // such a dependency.
     const run_cmd = b.addRunArtifact(exe);
 
     // By making the run step depend on the install step, it will be run from the
     // installation directory rather than directly from within the cache directory.
     // This is not necessary, however, if the application depends on other installed
     // files, this ensures they will be present and in the expected location.
     run_cmd.step.dependOn(b.getInstallStep());
 
     // This allows the user to pass arguments to the application in the build
     // command itself, like this: `zig build run -- arg1 arg2 etc`
     if (b.args) |args| {
         run_cmd.addArgs(args);
     }
 
     // This creates a build step. It will be visible in the `zig build --help` menu,
     // and can be selected like this: `zig build run`
     // This will evaluate the `run` step rather than the default, which is "install".
     const run_step = b.step("run", "Run the app");
     run_step.dependOn(&run_cmd.step);
 
     // Creates a step for unit testing. This only builds the test executable
     // but does not run it.
     const lib_unit_tests = b.addTest(.{
         .root_source_file = b.path("src/root.zig"),
         .target = target,
         .optimize = optimize,
     });
 
     const run_lib_unit_tests = b.addRunArtifact(lib_unit_tests);
 
     const exe_unit_tests = b.addTest(.{
         .root_source_file = b.path("src/main.zig"),
         .target = target,
         .optimize = optimize,
     });
 
     const run_exe_unit_tests = b.addRunArtifact(exe_unit_tests);
 
     // Similar to creating the run step earlier, this exposes a `test` step to
     // the `zig build --help` menu, providing a way for the user to request
     // running the unit tests.
     const test_step = b.step("test", "Run unit tests");
     test_step.dependOn(&run_lib_unit_tests.step);
     test_step.dependOn(&run_exe_unit_tests.step);
 }