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build: add version string and flag
Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
+58
+36
build.zig
+36
build.zig
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const std = @import("std");
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/// Must be kept in sync with git tags
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const comlink_version: std.SemanticVersion = .{ .major = 0, .minor = 0, .patch = 0 };
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pub fn build(b: *std.Build) void {
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const target = b.standardTargetOptions(.{});
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const optimize = b.standardOptimizeOption(.{});
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.target = target,
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.optimize = optimize,
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});
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const opts = b.addOptions();
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const version_string = version(b) catch |err| {
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std.debug.print("{}", .{err});
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@compileError("couldn't get version");
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};
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opts.addOption([]const u8, "version", version_string);
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exe.root_module.addOptions("build_options", opts);
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exe.root_module.addImport("tls", tls_dep.module("tls"));
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exe.root_module.addImport("ziglua", ziglua_dep.module("ziglua"));
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exe.root_module.addImport("vaxis", vaxis_dep.module("vaxis"));
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const test_step = b.step("test", "Run unit tests");
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test_step.dependOn(&run_exe_unit_tests.step);
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}
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fn version(b: *std.Build) ![]const u8 {
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if (!std.process.can_spawn) {
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std.debug.print("error: version info cannot be retrieved from git. Zig version must be provided using -Dversion-string\n", .{});
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std.process.exit(1);
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}
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const version_string = b.fmt("v{d}.{d}.{d}", .{ comlink_version.major, comlink_version.minor, comlink_version.patch });
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var code: u8 = undefined;
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const git_describe_untrimmed = b.runAllowFail(&[_][]const u8{
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"git",
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"-C",
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b.build_root.path orelse ".",
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"describe",
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"--tags",
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"--abbrev=9",
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}, &code, .Ignore) catch {
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return version_string;
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};
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if (!std.mem.startsWith(u8, git_describe_untrimmed, version_string)) {
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std.debug.print("error: tagged version does not match internal version\n", .{});
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std.process.exit(1);
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}
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return std.mem.trim(u8, git_describe_untrimmed, " \n\r");
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}
+22
src/main.zig
+22
src/main.zig
···
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const std = @import("std");
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const options = @import("build_options");
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const builtin = @import("builtin");
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const comlink = @import("comlink.zig");
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const vaxis = @import("vaxis");
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.{ .scope = .vaxis_parser, .level = .warn },
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},
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};
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pub const version = options.version;
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/// Called after receiving a terminating signal
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fn cleanUp(sig: c_int) callconv(.C) void {
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}
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const alloc = gpa.allocator();
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var args = try std.process.argsWithAllocator(alloc);
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while (args.next()) |arg| {
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if (argMatch("-v", "--version", arg)) {
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const stdout = std.io.getStdOut();
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try stdout.writer().print("comlink {s}\n", .{version});
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return;
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}
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}
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// Handle termination signals
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switch (builtin.os.tag) {
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.windows => {},
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else => return err,
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}
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};
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}
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fn argMatch(maybe_short: ?[]const u8, maybe_long: ?[]const u8, arg: [:0]const u8) bool {
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if (maybe_short) |short| {
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if (std.mem.eql(u8, short, arg)) return true;
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}
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if (maybe_long) |long| {
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if (std.mem.eql(u8, long, arg)) return true;
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}
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return false;
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}
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test {