seizer-solitaire/build.zig

143 lines
6.1 KiB
Zig

const std = @import("std");
const mem = std.mem;
const seizer_solitaire_version = std.SemanticVersion{ .major = 0, .minor = 1, .patch = 0 };
// 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 {
const target = b.standardTargetOptions(.{});
const optimize = b.standardOptimizeOption(.{});
const version = try getVersionString(b);
const exe = try addSeizerSolitaireExe(b, b.getInstallStep(), .{ .target = target, .optimize = optimize, .version = version });
const run_cmd = b.addRunArtifact(exe);
run_cmd.step.dependOn(b.getInstallStep());
if (b.args) |args| {
run_cmd.addArgs(args);
}
const run_step = b.step("run", "Run the app");
run_step.dependOn(&run_cmd.step);
// build for all targets
const dist_step = b.step("dist", "Build binaries for all targets");
_ = try addSeizerSolitaireExe(b, dist_step, .{ .optimize = optimize, .version = version, .target = b.resolveTargetQuery(.{ .cpu_arch = .x86_64, .os_tag = .linux, .abi = .gnu }) });
_ = try addSeizerSolitaireExe(b, dist_step, .{ .optimize = optimize, .version = version, .target = b.resolveTargetQuery(.{ .cpu_arch = .arm, .os_tag = .linux, .abi = .gnueabihf }) });
_ = try addSeizerSolitaireExe(b, dist_step, .{ .optimize = optimize, .version = version, .target = b.resolveTargetQuery(.{ .cpu_arch = .aarch64, .os_tag = .linux, .abi = .gnu }) });
_ = try addSeizerSolitaireExe(b, dist_step, .{ .optimize = optimize, .version = version, .target = b.resolveTargetQuery(.{ .cpu_arch = .wasm32, .os_tag = .wasi, .abi = .none }) });
}
pub fn addSeizerSolitaireExe(b: *std.Build, install_step: *std.Build.Step, options: struct {
target: std.Build.ResolvedTarget,
optimize: std.builtin.OptimizeMode,
version: [:0]const u8,
}) !*std.Build.Step.Compile {
const seizer = b.dependency("seizer", .{
.target = options.target,
.optimize = options.optimize,
});
const exe = b.addExecutable(.{
.name = "seizer-solitaire",
.root_source_file = .{ .path = "src/main.zig" },
.target = options.target,
.optimize = options.optimize,
});
exe.root_module.addImport("seizer", seizer.module("seizer"));
const install_exe = b.addInstallArtifact(exe, .{ .dest_sub_path = b.fmt("{s}/{s}", .{ try options.target.result.linuxTriple(b.allocator), exe.name }) });
install_step.dependOn(&install_exe.step);
// additionally generate an HTML file with the wasm module embedded when we use the wasi target
if (options.target.result.os.tag == .wasi) {
exe.wasi_exec_model = .reactor;
const bundle_webpage_exe = seizer.artifact("bundle-webpage");
const bundle_webpage = b.addRunArtifact(bundle_webpage_exe);
bundle_webpage.addArtifactArg(exe);
const install_html = b.addInstallFile(bundle_webpage.captureStdOut(), "www/seizer-solitaire.html");
install_step.dependOn(&install_html.step);
}
// code to add version to binary, stolen from the zig language's build.zig
const exe_options = b.addOptions();
exe.root_module.addOptions("build_options", exe_options);
exe_options.addOption([:0]const u8, "version", options.version);
return exe;
}
pub fn getVersionString(b: *std.Build) ![:0]const u8 {
const opt_version_string = b.option([]const u8, "version-string", "Override version string. Default is to find out with git.");
if (opt_version_string) |version| {
return try b.allocator.dupeZ(u8, version);
}
if (!std.process.can_spawn) {
std.debug.print("error: version info cannot be retrieved from git. Zig version must be provided using -Dversion-string\n", .{});
std.process.exit(1);
}
const version_string = b.fmt("{d}.{d}.{d}", .{ seizer_solitaire_version.major, seizer_solitaire_version.minor, seizer_solitaire_version.patch });
var code: u8 = undefined;
const git_describe_untrimmed = b.runAllowFail(&[_][]const u8{
"git",
"-C",
b.build_root.path orelse ".",
"describe",
"--match",
"*.*.*",
"--tags",
"--abbrev=9",
}, &code, .Ignore) catch {
return try b.allocator.dupeZ(u8, version_string);
};
const git_describe = mem.trim(u8, git_describe_untrimmed, " \n\r");
switch (mem.count(u8, git_describe, "-")) {
0 => {
// Tagged release version (e.g. 0.10.0).
if (!mem.eql(u8, git_describe, version_string)) {
std.debug.print("Zig version '{s}' does not match Git tag '{s}'\n", .{ version_string, git_describe });
std.process.exit(1);
}
return try b.allocator.dupeZ(u8, version_string);
},
2 => {
// Untagged development build (e.g. 0.10.0-dev.2025+ecf0050a9).
var it = mem.splitScalar(u8, git_describe, '-');
const tagged_ancestor = it.first();
const commit_height = it.next().?;
const commit_id = it.next().?;
const ancestor_ver = try std.SemanticVersion.parse(tagged_ancestor);
if (seizer_solitaire_version.order(ancestor_ver) != .gt) {
std.debug.print("version '{}' must be greater than tagged ancestor '{}'\n", .{ seizer_solitaire_version, ancestor_ver });
std.process.exit(1);
}
// Check that the commit hash is prefixed with a 'g' (a Git convention).
if (commit_id.len < 1 or commit_id[0] != 'g') {
std.debug.print("Unexpected `git describe` output: {s}\n", .{git_describe});
return try b.allocator.dupeZ(u8, version_string);
}
// The version is reformatted in accordance with the https://semver.org specification.
const formatted_version = b.fmt("{s}-dev.{s}+{s}", .{ version_string, commit_height, commit_id[1..] });
return try b.allocator.dupeZ(u8, formatted_version);
},
else => {
std.debug.print("Unexpected `git describe` output: {s}\n", .{git_describe});
return try b.allocator.dupeZ(u8, version_string);
},
}
}