Add gpiodetect and gpioinfo commands

build.zig

@@ -1,18 +1,35 @@
 const std = @import("std");
 
+const Item = struct {
+    name: []const u8,
+    src: []const u8,
+};
+
+/// List of examples
+const examples = [_]Item{
+    .{ .name = "blinky", .src = "_examples/blinky.zig" },
+    .{ .name = "multi", .src = "_examples/multi.zig" },
+};
+
+/// List of commands
+const commands = [_]Item{
+    .{ .name = "gpiodetect", .src = "cmd/detect.zig" },
+    .{ .name = "gpioinfo", .src = "cmd/info.zig" },
+};
+
 pub fn build(b: *std.Build) !void {
     const target = b.standardTargetOptions(.{});
     const optimize = b.standardOptimizeOption(.{});
 
+    // Add the gpio module so it can be used by the package manager
     var gpio_module = b.createModule(.{ .source_file = .{ .path = "index.zig" } });
     try b.modules.put(b.dupe("gpio"), gpio_module);
 
+    // Create a step to build all the examples
     const examples_step = b.step("examples", "build all the examples");
 
-    inline for ([_]struct { name: []const u8, src: []const u8 }{
-        .{ .name = "blinky", .src = "_examples/blinky.zig" },
-        .{ .name = "multi", .src = "_examples/multi.zig" },
-    }) |cfg| {
+    // Add all the examples
+    inline for (examples) |cfg| {
         const desc = try std.fmt.allocPrint(b.allocator, "build the {s} example", .{cfg.name});
         const step = b.step(cfg.name, desc);
 
@@ -28,4 +45,25 @@ pub fn build(b: *std.Build) !void {
         step.dependOn(&build_step.step);
         examples_step.dependOn(&build_step.step);
     }
+
+    // Create a step to build all the commands
+    const commands_step = b.step("commands", "build all the commands");
+
+    // Add all the commands
+    inline for (commands) |cfg| {
+        const desc = try std.fmt.allocPrint(b.allocator, "build the {s} command", .{cfg.name});
+        const step = b.step(cfg.name, desc);
+
+        const exe = b.addExecutable(.{
+            .name = cfg.name,
+            .root_source_file = .{ .path = cfg.src },
+            .target = target,
+            .optimize = optimize,
+        });
+        exe.addModule("gpio", gpio_module);
+
+        const build_step = b.addInstallArtifact(exe, .{});
+        step.dependOn(&build_step.step);
+        commands_step.dependOn(&build_step.step);
+    }
 }