update to zig 0.11.0-dev.2157+f56f3c582

build.zig

@@ -14,9 +14,10 @@ pub fn build(b: *std.build.Builder) void {
     // for restricting supported target set are available.
     const target = b.standardTargetOptions(.{});
 
-    // Standard release options allow the person running `zig build` to select
-    // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
-    const mode = b.standardReleaseOptions();
+    // 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(.{});
 
     // Dependency based on the package manager MVP:
     // https://github.com/ziglang/zig/pull/14265
@@ -24,13 +25,20 @@ pub fn build(b: *std.build.Builder) void {
     const im_dep = b.dependency("ImageMagick", .{});
     const z_dep = b.dependency("libz", .{});
 
-    const i2cdriver = b.addStaticLibrary("i2cdriver", null);
+    const i2cdriver = b.addStaticLibrary(.{
+        .name = "i2cdriver",
+        .target = target,
+        .optimize = optimize,
+    });
     i2cdriver.addCSourceFile("lib/i2cdriver/i2cdriver.c", &[_][]const u8{ "-Wall", "-Wpointer-sign", "-Werror" });
     i2cdriver.linkLibC();
 
-    const exe = b.addExecutable("i2c", "src/main.zig");
-    exe.setTarget(target);
-    exe.setBuildMode(mode);
+    const exe = b.addExecutable(.{
+        .name = "i2c",
+        .root_source_file = .{ .path = "src/main.zig" },
+        .target = target,
+        .optimize = optimize,
+    });
     exe.linkLibrary(im_dep.artifact("MagickWand"));
     exe.linkLibrary(z_dep.artifact("z"));
     exe.linkLibrary(i2cdriver);
@@ -46,9 +54,11 @@ pub fn build(b: *std.build.Builder) void {
     const run_step = b.step("run", "Run the app");
     run_step.dependOn(&run_cmd.step);
 
-    const exe_tests = b.addTest("src/main.zig");
-    exe_tests.setTarget(target);
-    exe_tests.setBuildMode(mode);
+    const exe_tests = b.addTest(.{
+        .root_source_file = .{ .path = "src/main.zig" },
+        .target = target,
+        .optimize = optimize,
+    });
 
     const test_step = b.step("test", "Run unit tests");
     test_step.dependOn(&exe_tests.step);

build.zig.ini

@@ -1,13 +0,0 @@
-[package]
-name=i2c
-version=0.0.1
-
-[dependency]
-name=ImageMagick
-url=https://github.com/elerch/ImageMagick/archive/31ce8a2ada73c78f389554d059943beb01288157.tar.gz
-hash=c277d15642d73d4c5365cc64c1322569029302d91786471b84a0fc42c5f35d6f
-
-[dependency]
-name=libz
-url=https://github.com/andrewrk/libz/archive/0c407ce05693fef54b909fee9d0c17ad28f7190b.tar.gz
-hash=a09f23166f264f4ec7a82b81e9e7ce62bf36a13f86e12afb1fce1211d90f0d88

build.zig.zon

@@ -0,0 +1,15 @@
+.{
+    .name = "i2c",
+    .version = "0.0.1",
+
+    .dependencies = .{
+        .ImageMagick = .{
+            .url = "https://github.com/elerch/ImageMagick/archive/0c78c43ba348fe2d764593b074b4f53d087a3a26.tar.gz",
+            .hash = "12208162dcc0b1f2e5fb6376136fe5266b2b493a38ca8f30eff94b735f7da6ada462",
+        },
+        .libz = .{
+            .url="https://github.com/andrewrk/libz/archive/9e71b746b83d2b5bf5eb247663eb65a52cf0f68f.tar.gz",
+            .hash = "12204ea3490e5bdf379f56aa11784d906aed6d4c553c724fa5427169915f2cf4a651",
+        },
+    },
+}

src/main.zig

@@ -129,7 +129,7 @@ fn sendPixelsThroughI2CDriver(pixels: []const u8, file: [*:0]const u8, device_id
 
 fn packPixelsToDeviceFormat(pixels: []const u8, packed_pixels: []u8) void {
     // Each u8 in pixels is a single bit. We need to pack these bits
-    for (packed_pixels) |*b, i| {
+    for (packed_pixels, 0..) |*b, i| {
         const column = i % WIDTH;
         const page = i / WIDTH;