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[build.zig]: a concrete approach to build for web

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haxsam 2025-08-31 16:16:49 +02:00 • committed by Nikolas
parent df70c5c952
commit b44a355a81
7 changed files with 211 additions and 238 deletions
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66
build.zig
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@ -3,8 +3,7 @@
const std = @import("std");
const this = @This();
const rl = @import("raylib");
pub const emcc = @import("emcc.zig");
pub const emsdk = rl.emsdk;
pub const Options = rl.Options;
pub const OpenglVersion = rl.OpenglVersion;
@ -27,7 +26,7 @@ fn getRaylib(b: *std.Build, target: std.Build.ResolvedTarget, optimize: std.buil
.rtext = options.rtext,
.rtextures = options.rtextures,
.platform = options.platform,
.shared = options.shared,
.linkage = options.linkage,
.linux_display_backend = options.linux_display_backend,
.opengl_version = options.opengl_version,
.android_api_version = options.android_api_version,
@ -390,33 +389,54 @@ pub fn build(b: *std.Build) !void {
const examples_step = b.step("examples", "Builds all the examples");
for (examples) |ex| {
const mod = b.createModule(.{
.root_source_file = b.path(ex.path),
.target = target,
.optimize = optimize,
});
if (target.query.os_tag == .emscripten) {
const exe_lib = try emcc.compileForEmscripten(b, ex.name, ex.path, target, optimize);
exe_lib.root_module.addImport("raylib", raylib);
exe_lib.root_module.addImport("raygui", raygui);
const wasm = b.addLibrary(.{
.name = ex.name,
.root_module = mod,
});
wasm.root_module.addImport("raylib", raylib);
wasm.root_module.addImport("raygui", raygui);
wasm.linkLibrary(raylib_artifact);
// Note that raylib itself isn't actually added to the exe_lib
// output file, so it also needs to be linked with emscripten.
exe_lib.linkLibrary(raylib_artifact);
const link_step = try emcc.linkWithEmscripten(b, &[_]*std.Build.Step.Compile{ exe_lib, raylib_artifact });
link_step.addArg("--emrun");
link_step.addArg("--embed-file");
link_step.addArg("resources/");
const install_dir: std.Build.InstallDir = .{ .custom = "web" };
const emcc_flags = emsdk.emccDefaultFlags(b.allocator, .{
.optimize = optimize,
.asyncify = !std.mem.endsWith(u8, ex.name, "web"),
});
const emcc_settings = emsdk.emccDefaultSettings(b.allocator, .{
.optimize = optimize,
});
const emcc_step = emsdk.emccStep(b, raylib_artifact, wasm, .{
.optimize = optimize,
.flags = emcc_flags,
.settings = emcc_settings,
.shell_file_path = emsdk.shell(b),
.install_dir = install_dir,
.embed_paths = &.{.{ .src_path = "resources/" }},
});
const html_filename = try std.fmt.allocPrint(b.allocator, "{s}.html", .{wasm.name});
const emrun_step = emsdk.emrunStep(
b,
b.getInstallPath(install_dir, html_filename),
&.{},
);
emrun_step.dependOn(emcc_step);
const run_step = try emcc.emscriptenRunStep(b);
run_step.step.dependOn(&link_step.step);
const run_option = b.step(ex.name, ex.desc);
run_option.dependOn(&run_step.step);
examples_step.dependOn(&exe_lib.step);
run_option.dependOn(emrun_step);
examples_step.dependOn(emcc_step);
} else {
const exe = b.addExecutable(.{
.name = ex.name,
.root_module = b.createModule(.{
.root_source_file = b.path(ex.path),
.target = target,
.optimize = optimize,
}),
.root_module = mod,
});
exe.linkLibrary(raylib_artifact);
exe.root_module.addImport("raylib", raylib);