Daniel Samson
4476208361
Every binary's build.zig now names precisely the modules its source
imports (derived by scanning each artifact's sources, transitively
through same-directory files), and its zon carries only the domains
those come from — kernel stays implicit (the root shim + link script
live there). build-support's userBinary resolves each name through one
module-to-domain table (module_homes); Domains/domains()/defaultImports
and the raw recipe entry point are deleted. An undeclared @import is a
compile error (verified: injecting @import("xkeyboard-config") into
logger fails with 'no module named ... available within module
program'), and e.g. xkeyboard-config now appears in exactly two
manifests — the two keyboard drivers. Availability never bloated the
emitted binaries (Zig compiles only what a program imports); this makes
the declared interfaces honest. Production and -Dtest-case manifests
byte-identical; all build variants and standalone package builds
green.
29 lines
1.4 KiB
Zig
29 lines
1.4 KiB
Zig
//! init (PID 1) as a binary package (docs/build-packages-plan.md): this file
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//! names the binary and EXACTLY the modules its source imports — the shared
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//! recipe and the module-to-domain map live in build-support. The root build
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//! consumes the artifact for the boot image and forwards its -Dserial here.
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const std = @import("std");
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const build_support = @import("build-support");
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pub fn build(b: *std.Build) void {
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const exe = build_support.userBinary(b, .{
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.name = "init",
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.root_source_file = b.path("init.zig"),
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.imports = &.{
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"csv", "file-system", "ipc", "logging", "memory", "power-protocol",
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"process", "time",
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},
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});
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// init reads the same `serial` flag the kernel does: its liveness heartbeat
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// is a serial/test-build diagnostic (the QEMU harness's init tests assert
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// on it, and -Dserial images emit it), so a flashable image runs a purely
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// event-driven PID 1 that wakes only for real work. The root build forwards
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// its top-level -Dserial as this dependency option.
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const serial = b.option(bool, "serial", "Compile the serial liveness heartbeat in (forwarded from the root -Dserial)") orelse false;
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const init_options = b.addOptions();
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init_options.addOption(bool, "serial", serial);
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build_support.programModule(exe).addImport("build_options", init_options.createModule());
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b.installArtifact(exe);
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}
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