build: Automate userinit archive creation using the build script

Closes #36.

1 files changed, 8 insertions, 0 deletions

diff --git a/build.zig b/build.zig
index c2762d2..42a013f 100644
--- a/build.zig
+++ b/build.zig
@@ -9,6 +9,14 @@ const std = @import("std");
 // declaratively construct a build graph that will be executed by an external
 // runner.
 pub fn build(b: *std.Build) void {
+    const create_userinit = b.addSystemCommand(&.{"tar"});
+    create_userinit.addArg("-C");
+    create_userinit.addDirectoryArg(b.path("src/lib/cfg/userinit"));
+    create_userinit.addArg("-cf");
+    create_userinit.addFileArg(b.path("src/lib/cfg/userinit.tar"));
+    create_userinit.addArg(".");
+    b.getInstallStep().dependOn(&create_userinit.step);
+
     const riscv64_freestanding = std.zig.CrossTarget{
         .cpu_arch = std.Target.Cpu.Arch.riscv64,
         .os_tag = std.Target.Os.Tag.freestanding,