build wasm from source

01-PREPARE-FOR-EDITS.sh

@@ -14,7 +14,7 @@ curl https://ziglang.org/documentation/0.13.0/std/main.wasm -s -o WORKSPACE/main
 curl https://ziglang.org/documentation/0.13.0/std/main.js -s -o WORKSPACE/main.js
 
 # link-in the assets and layouts
-for d in assets layouts ; do
+for d in assets layouts zig_docs; do
     if [ ! -h ${WORKSPACE}/$d ] ; then
         ln -s ../$d ${WORKSPACE}/$d
     fi
@@ -42,7 +42,3 @@ for i in $(find content -iname '*.smd') ; do
     mkdir -p $(dirname $SMD_DEST)
     cat $SMD_SOURCE $MD_SOURCE > $SMD_DEST
 done
-
-# finally, copy over build.zig, build.zig.zon because zine does not like 
-# subdirs
-cp -v ./build.zig* $WORKSPACE/

02-BUILD.sh

@@ -6,7 +6,9 @@ cd zml
 # resulting in broken links + polluting the search bar.
 tar -cf sources.tar zml/*.zig zml/**/*.zig
 cd ..
+
 cp -f ./zml/sources.tar WORKSPACE/
+cp -v ./build.zig* WORKSPACE/
 
 cd WORKSPACE
 echo "Starting Zine build..."

build.zig

@@ -2,6 +2,25 @@ const std = @import("std");
 const zine = @import("zine");
 
 pub fn build(b: *std.Build) !void {
+    const wasm_target = b.resolveTargetQuery(.{
+        .cpu_arch = .wasm32,
+        .os_tag = .freestanding,
+    });
+
+    // Vendored version of https://github.com/ziglang/zig/tree/0.13.0/lib/docs/wasm
+    const docs_wasm = b.addExecutable(.{
+        .name = "main",
+        .target = wasm_target,
+        .optimize = .Debug,
+        .root_source_file = .{ .cwd_relative = "zig_docs/main.zig" },
+    });
+    docs_wasm.entry = .disabled;
+    docs_wasm.rdynamic = true;
+    const Walk = b.addModule("Walk", .{
+        .root_source_file = .{ .cwd_relative = "zig_docs/Walk.zig" },
+    });
+    docs_wasm.root_module.addImport("Walk", Walk);
+
     zine.website(b, .{
         .title = "ZML Documentation Website",
         .host_url = "https://docs.zml.ai",
@@ -13,7 +32,7 @@ pub fn build(b: *std.Build) !void {
             "zml.no_light.svg",
         },
         .build_assets = &.{
-            staticAsset(b, "main.wasm"),
+            .{ .name = "main.wasm", .lp = docs_wasm.getEmittedBin(), .install_path = "main.wasm", .install_always = true },
             staticAsset(b, "main.js"),
             staticAsset(b, "sources.tar"),
         },