278 lines
9.6 KiB
Zig
278 lines
9.6 KiB
Zig
const std = @import("std");
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pub const Backend = enum {
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no_backend,
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glfw_wgpu,
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glfw_opengl3,
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glfw_dx12,
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win32_dx12,
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glfw,
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mach_glfw_opengl3,
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};
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pub fn build(b: *std.Build) void {
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const optimize = b.standardOptimizeOption(.{});
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const target = b.standardTargetOptions(.{});
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const options = .{
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.backend = b.option(Backend, "backend", "Backend to build (default: no_backend)") orelse .no_backend,
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.shared = b.option(
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bool,
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"shared",
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"Bulid as a shared library",
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) orelse false,
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.with_implot = b.option(
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bool,
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"with_implot",
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"Build with bundled implot source",
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) orelse true,
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.with_te = b.option(
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bool,
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"with_te",
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"Build with bundled test engine support",
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) orelse false,
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.use_wchar32 = b.option(
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bool,
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"use_wchar32",
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"Extended unicode support",
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) orelse false,
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};
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const options_step = b.addOptions();
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inline for (std.meta.fields(@TypeOf(options))) |field| {
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options_step.addOption(field.type, field.name, @field(options, field.name));
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}
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const options_module = options_step.createModule();
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_ = b.addModule("root", .{
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.root_source_file = b.path("src/gui.zig"),
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.imports = &.{
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.{ .name = "zgui_options", .module = options_module },
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},
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});
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const cflags = &.{"-fno-sanitize=undefined"};
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const imgui = if (options.shared) blk: {
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const lib = b.addSharedLibrary(.{
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.name = "imgui",
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.target = target,
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.optimize = optimize,
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});
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if (target.result.os.tag == .windows) {
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lib.defineCMacro("IMGUI_API", "__declspec(dllexport)");
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lib.defineCMacro("IMPLOT_API", "__declspec(dllexport)");
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lib.defineCMacro("ZGUI_API", "__declspec(dllexport)");
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}
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if (target.result.os.tag == .macos) {
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lib.linker_allow_shlib_undefined = true;
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}
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break :blk lib;
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} else b.addStaticLibrary(.{
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.name = "imgui",
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.target = target,
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.optimize = optimize,
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});
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b.installArtifact(imgui);
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imgui.addIncludePath(b.path("libs"));
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imgui.addIncludePath(b.path("libs/imgui"));
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imgui.linkLibC();
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if (target.result.abi != .msvc)
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imgui.linkLibCpp();
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imgui.addCSourceFile(.{
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.file = b.path("src/zgui.cpp"),
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.flags = cflags,
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});
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imgui.addCSourceFiles(.{
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.files = &.{
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"libs/imgui/imgui.cpp",
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"libs/imgui/imgui_widgets.cpp",
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"libs/imgui/imgui_tables.cpp",
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"libs/imgui/imgui_draw.cpp",
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"libs/imgui/imgui_demo.cpp",
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},
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.flags = cflags,
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});
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if (options.with_implot) {
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imgui.defineCMacro("ZGUI_IMPLOT", "1");
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imgui.addCSourceFiles(.{
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.files = &.{
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"libs/imgui/implot_demo.cpp",
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"libs/imgui/implot.cpp",
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"libs/imgui/implot_items.cpp",
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},
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.flags = cflags,
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});
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} else {
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imgui.defineCMacro("ZGUI_IMPLOT", "0");
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}
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if (options.use_wchar32) {
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imgui.defineCMacro("IMGUI_USE_WCHAR32", "1");
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}
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if (options.with_te) {
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imgui.defineCMacro("ZGUI_TE", "1");
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imgui.defineCMacro("IMGUI_ENABLE_TEST_ENGINE", null);
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imgui.defineCMacro("IMGUI_TEST_ENGINE_ENABLE_COROUTINE_STDTHREAD_IMPL", "1");
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imgui.addIncludePath(b.path("libs/imgui_test_engine/"));
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imgui.addCSourceFile(.{ .file = b.path("libs/imgui_test_engine/imgui_capture_tool.cpp"), .flags = cflags });
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imgui.addCSourceFile(.{ .file = b.path("libs/imgui_test_engine/imgui_te_context.cpp"), .flags = cflags });
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imgui.addCSourceFile(.{ .file = b.path("libs/imgui_test_engine/imgui_te_coroutine.cpp"), .flags = cflags });
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imgui.addCSourceFile(.{ .file = b.path("libs/imgui_test_engine/imgui_te_engine.cpp"), .flags = cflags });
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imgui.addCSourceFile(.{ .file = b.path("libs/imgui_test_engine/imgui_te_exporters.cpp"), .flags = cflags });
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imgui.addCSourceFile(.{ .file = b.path("libs/imgui_test_engine/imgui_te_perftool.cpp"), .flags = cflags });
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imgui.addCSourceFile(.{ .file = b.path("libs/imgui_test_engine/imgui_te_ui.cpp"), .flags = cflags });
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imgui.addCSourceFile(.{ .file = b.path("libs/imgui_test_engine/imgui_te_utils.cpp"), .flags = cflags });
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// TODO: Workaround because zig on win64 doesn have phtreads
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// TODO: Implement corutine in zig can solve this
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if (target.result.os.tag == .windows) {
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const src: []const []const u8 = &.{
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"libs/winpthreads/src/nanosleep.c",
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"libs/winpthreads/src/cond.c",
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"libs/winpthreads/src/barrier.c",
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"libs/winpthreads/src/misc.c",
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"libs/winpthreads/src/clock.c",
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"libs/winpthreads/src/libgcc/dll_math.c",
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"libs/winpthreads/src/spinlock.c",
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"libs/winpthreads/src/thread.c",
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"libs/winpthreads/src/mutex.c",
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"libs/winpthreads/src/sem.c",
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"libs/winpthreads/src/sched.c",
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"libs/winpthreads/src/ref.c",
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"libs/winpthreads/src/rwlock.c",
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};
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const winpthreads = b.addStaticLibrary(.{
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.name = "winpthreads",
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.optimize = optimize,
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.target = target,
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});
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winpthreads.want_lto = false;
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winpthreads.root_module.sanitize_c = false;
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if (optimize == .Debug or optimize == .ReleaseSafe)
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winpthreads.bundle_compiler_rt = true
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else
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winpthreads.root_module.strip = true;
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winpthreads.addCSourceFiles(.{ .files = src, .flags = &.{
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"-Wall",
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"-Wextra",
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} });
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winpthreads.defineCMacro("__USE_MINGW_ANSI_STDIO", "1");
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winpthreads.addIncludePath(b.path("libs/winpthreads/include"));
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winpthreads.addIncludePath(b.path("libs/winpthreads/src"));
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winpthreads.linkLibC();
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b.installArtifact(winpthreads);
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imgui.linkLibrary(winpthreads);
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imgui.addSystemIncludePath(b.path("libs/winpthreads/include"));
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}
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} else {
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imgui.defineCMacro("ZGUI_TE", "0");
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}
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switch (options.backend) {
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.glfw_wgpu => {
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const zglfw = b.dependency("zglfw", .{});
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const zgpu = b.dependency("zgpu", .{});
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imgui.addIncludePath(zglfw.path("libs/glfw/include"));
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imgui.addIncludePath(zgpu.path("libs/dawn/include"));
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imgui.addCSourceFiles(.{
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.files = &.{
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"libs/imgui/backends/imgui_impl_glfw.cpp",
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"libs/imgui/backends/imgui_impl_wgpu.cpp",
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},
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.flags = cflags,
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});
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},
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.glfw_opengl3 => {
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const zglfw = b.dependency("zglfw", .{});
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imgui.addIncludePath(zglfw.path("libs/glfw/include"));
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imgui.addCSourceFiles(.{
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.files = &.{
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"libs/imgui/backends/imgui_impl_glfw.cpp",
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"libs/imgui/backends/imgui_impl_opengl3.cpp",
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},
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.flags = &(cflags.* ++ .{"-DIMGUI_IMPL_OPENGL_LOADER_CUSTOM"}),
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});
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},
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.glfw_dx12 => {
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const zglfw = b.dependency("zglfw", .{});
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imgui.addIncludePath(zglfw.path("libs/glfw/include"));
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imgui.addCSourceFiles(.{
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.files = &.{
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"libs/imgui/backends/imgui_impl_glfw.cpp",
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"libs/imgui/backends/imgui_impl_dx12.cpp",
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},
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.flags = cflags,
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});
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imgui.linkSystemLibrary("d3dcompiler_47");
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},
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.mach_glfw_opengl3 => {
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imgui.addCSourceFiles(.{
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.files = &.{
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"libs/imgui/backends/imgui_impl_glfw.cpp",
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"libs/imgui/backends/imgui_impl_opengl3.cpp",
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"libs/imgui/backends/imgui_impl_opengl3_loader.h",
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},
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.flags = cflags,
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});
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},
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.win32_dx12 => {
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imgui.addCSourceFiles(.{
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.files = &.{
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"libs/imgui/backends/imgui_impl_win32.cpp",
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"libs/imgui/backends/imgui_impl_dx12.cpp",
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},
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.flags = cflags,
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});
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imgui.linkSystemLibrary("d3dcompiler_47");
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imgui.linkSystemLibrary("dwmapi");
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switch (target.result.abi) {
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.msvc => imgui.linkSystemLibrary("Gdi32"),
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.gnu => imgui.linkSystemLibrary("gdi32"),
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else => {},
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}
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},
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.glfw => {
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const zglfw = b.dependency("zglfw", .{});
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imgui.addIncludePath(zglfw.path("libs/glfw/include"));
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imgui.addCSourceFiles(.{
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.files = &.{
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"libs/imgui/backends/imgui_impl_glfw.cpp",
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},
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.flags = cflags,
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});
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},
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.no_backend => {},
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}
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const test_step = b.step("test", "Run zgui tests");
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const tests = b.addTest(.{
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.name = "zgui-tests",
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.root_source_file = b.path("src/gui.zig"),
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.target = target,
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.optimize = optimize,
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});
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b.installArtifact(tests);
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tests.root_module.addImport("zgui_options", options_module);
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tests.linkLibrary(imgui);
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test_step.dependOn(&b.addRunArtifact(tests).step);
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}
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