Allow for regz to be used as a module (#116)

tools/regz/build.zig

@@ -19,6 +19,14 @@ pub fn build(b: *std.build.Builder) !void {
         .optimize = optimize,
     });
 
+    const xml = b.addStaticLibrary(.{
+        .name = "xml2",
+        .target = target,
+        .optimize = optimize,
+    });
+    xml.linkLibrary(libxml2_dep.artifact("xml2"));
+    b.installArtifact(xml);
+
     const regz = b.addExecutable(.{
         .name = "regz",
         .root_source_file = .{ .path = "src/main.zig" },
@@ -29,6 +37,10 @@ pub fn build(b: *std.build.Builder) !void {
     regz.linkLibrary(libxml2_dep.artifact("xml2"));
     b.installArtifact(regz);
 
+    _ = b.addModule("regz", .{
+        .source_file = .{ .path = "src/module.zig" },
+    });
+
     const run_cmd = b.addRunArtifact(regz);
     run_cmd.step.dependOn(b.getInstallStep());
     if (b.args) |args| {

tools/regz/src/main.zig

@@ -1,7 +1,6 @@
 const std = @import("std");
 const clap = @import("clap");
 const xml = @import("xml.zig");
-const svd = @import("svd.zig");
 const Database = @import("Database.zig");
 
 const ArenaAllocator = std.heap.ArenaAllocator;

tools/regz/src/module.zig

@@ -0,0 +1 @@
+pub const Database = @import("Database.zig");