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build.zig
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build.zig
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const std = @import("std");
const ArrayListUnmanaged = std.ArrayListUnmanaged;
pub fn build(b: *std.Build) void {
const target = b.standardTargetOptions(.{});
const optimize = b.standardOptimizeOption(.{});
const xml = b.dependency("xml", .{}).module("xml");
const exe = b.addExecutable(.{
.name = "zig-gobject",
.root_source_file = .{ .path = "src/main.zig" },
.target = target,
.optimize = optimize,
});
exe.linkLibC();
exe.root_module.addImport("xml", xml);
b.installArtifact(exe);
const run_cmd = b.addRunArtifact(exe);
run_cmd.step.dependOn(b.getInstallStep());
if (b.args) |args| {
run_cmd.addArgs(args);
}
const run_step = b.step("run", "Run the binding generator");
run_step.dependOn(&run_cmd.step);
// Tests
const test_step = b.step("test", "Run all tests");
const exe_tests = b.addTest(.{
.root_source_file = .{ .path = "src/main.zig" },
.target = target,
.optimize = optimize,
});
exe_tests.linkLibC();
exe_tests.root_module.addImport("xml", xml);
const test_exe_step = b.step("test-exe", "Run tests for the binding generator");
test_exe_step.dependOn(&b.addRunArtifact(exe_tests).step);
test_step.dependOn(test_exe_step);
const GirProfile = enum { gnome45, gnome46 };
const gir_profile = b.option(GirProfile, "gir-profile", "Predefined GIR profile for codegen");
const codegen_modules: []const []const u8 = b.option([]const []const u8, "modules", "Modules to codegen") orelse if (gir_profile) |profile| switch (profile) {
.gnome45 => &.{
"Adw-1",
"AppStream-1.0",
"AppStreamCompose-1.0",
"AppStreamGlib-1.0",
"Atk-1.0",
"Atspi-2.0",
"Avahi-0.6",
"AvahiCore-0.6",
"cairo-1.0",
"CudaGst-1.0",
"DBus-1.0",
"Dex-1",
"fontconfig-2.0",
"freetype2-2.0",
"GCab-1.0",
"Gck-1",
"Gck-2",
"Gcr-3",
"Gcr-4",
"GcrUi-3",
"GDesktopEnums-3.0",
"Gdk-3.0",
"Gdk-4.0",
"GdkPixbuf-2.0",
"GdkPixdata-2.0",
"GdkWayland-4.0",
"GdkX11-3.0",
"GdkX11-4.0",
"Gee-0.8",
"Geoclue-2.0",
"Gio-2.0",
"GIRepository-2.0",
"GL-1.0",
"GLib-2.0",
"GModule-2.0",
"GObject-2.0",
"Graphene-1.0",
"Gsk-4.0",
"Gst-1.0",
"GstAllocators-1.0",
"GstApp-1.0",
"GstAudio-1.0",
"GstBadAudio-1.0",
"GstBase-1.0",
"GstCheck-1.0",
"GstController-1.0",
"GstCuda-1.0",
"GstGL-1.0",
"GstGLEGL-1.0",
"GstGLWayland-1.0",
"GstGLX11-1.0",
"GstInsertBin-1.0",
"GstMpegts-1.0",
"GstNet-1.0",
"GstPbutils-1.0",
"GstPlay-1.0",
"GstPlayer-1.0",
"GstRtp-1.0",
"GstRtsp-1.0",
"GstSdp-1.0",
"GstTag-1.0",
"GstTranscoder-1.0",
"GstVa-1.0",
"GstVideo-1.0",
"GstVulkan-1.0",
"GstVulkanWayland-1.0",
"GstVulkanXCB-1.0",
"GstWebRTC-1.0",
"Gtk-3.0",
"Gtk-4.0",
"GtkSource-5",
"GUdev-1.0",
"Handy-1",
"HarfBuzz-0.0",
"IBus-1.0",
"JavaScriptCore-4.1",
"JavaScriptCore-6.0",
"Json-1.0",
"Libproxy-1.0",
"libxml2-2.0",
"Manette-0.2",
"Nice-0.1",
"Notify-0.7",
"Pango-1.0",
"PangoCairo-1.0",
"PangoFc-1.0",
"PangoFT2-1.0",
"PangoOT-1.0",
"Polkit-1.0",
"Rsvg-2.0",
"Secret-1",
"Soup-3.0",
"Tracker-3.0",
"Vulkan-1.0",
"WebKit2-4.1",
"WebKit2WebExtension-4.1",
"WebKit-6.0",
"WebKitWebProcessExtension-6.0",
"win32-1.0",
"xfixes-4.0",
"xft-2.0",
"xlib-2.0",
"Xmlb-2.0",
"xrandr-1.3",
},
.gnome46 => &.{
"Adw-1",
"AppStream-1.0",
"AppStreamCompose-1.0",
"AppStreamGlib-1.0",
"Atk-1.0",
"Atspi-2.0",
"cairo-1.0",
"CudaGst-1.0",
"DBus-1.0",
"DBusGLib-1.0",
"Dex-1",
"fontconfig-2.0",
"freetype2-2.0",
"GCab-1.0",
"Gck-1",
"Gck-2",
"Gcr-3",
"Gcr-4",
"GcrUi-3",
"GDesktopEnums-3.0",
"Gdk-3.0",
"Gdk-4.0",
"GdkPixbuf-2.0",
"GdkPixdata-2.0",
"GdkWayland-4.0",
"GdkX11-3.0",
"GdkX11-4.0",
"Gee-0.8",
"Geoclue-2.0",
"Gio-2.0",
"GioUnix-2.0",
"GIRepository-2.0",
"GIRepository-3.0",
"GL-1.0",
"GLib-2.0",
"GLibUnix-2.0",
"GModule-2.0",
"GObject-2.0",
"Graphene-1.0",
"Gsk-4.0",
"Gst-1.0",
"GstAllocators-1.0",
"GstApp-1.0",
"GstAudio-1.0",
"GstBadAudio-1.0",
"GstBase-1.0",
"GstCheck-1.0",
"GstCodecs-1.0",
"GstController-1.0",
"GstCuda-1.0",
"GstGL-1.0",
"GstGLEGL-1.0",
"GstGLWayland-1.0",
"GstGLX11-1.0",
"GstInsertBin-1.0",
"GstMpegts-1.0",
"GstNet-1.0",
"GstPbutils-1.0",
"GstPlay-1.0",
"GstPlayer-1.0",
"GstRtp-1.0",
"GstRtsp-1.0",
"GstSdp-1.0",
"GstTag-1.0",
"GstTranscoder-1.0",
"GstVa-1.0",
"GstVideo-1.0",
"GstVulkan-1.0",
"GstVulkanWayland-1.0",
"GstVulkanXCB-1.0",
"GstWebRTC-1.0",
"Gtk-3.0",
"Gtk-4.0",
"GtkSource-5",
"GUdev-1.0",
"Handy-1",
"HarfBuzz-0.0",
"IBus-1.0",
"JavaScriptCore-4.1",
"JavaScriptCore-6.0",
"Json-1.0",
"Libproxy-1.0",
"libxml2-2.0",
"Manette-0.2",
"Nice-0.1",
"Notify-0.7",
"Pango-1.0",
"PangoCairo-1.0",
"PangoFc-1.0",
"PangoFT2-1.0",
"PangoOT-1.0",
"Polkit-1.0",
"Rsvg-2.0",
"Secret-1",
"Soup-3.0",
"Tracker-3.0",
"Vulkan-1.0",
"WebKit2-4.1",
"WebKit2WebExtension-4.1",
"WebKit-6.0",
"WebKitWebProcessExtension-6.0",
"win32-1.0",
"xfixes-4.0",
"xft-2.0",
"xlib-2.0",
"Xmlb-2.0",
"xrandr-1.3",
},
} else &.{};
const gir_files_path = b.option([]const u8, "gir-files-path", "Path to GIR files") orelse "/usr/share/gir-1.0";
const codegen_cmd = b.addRunArtifact(exe);
// GIR fixes are handled by prepending a directory containing all the fixed
// GIRs to the search path. Fixed GIRs are produced from their originals
// using XSLT (deemed the most straightforward and complete way to transform
// XML semantically).
const gir_fixes: []const []const u8 = b.option([]const []const u8, "gir-fixes", "GIR fixes to apply") orelse if (gir_profile) |profile| switch (profile) {
.gnome45 => &.{
fix(b, "AppStream-1.0", "common"),
fix(b, "freetype2-2.0", "common"),
fix(b, "GObject-2.0", "gnome45"),
},
.gnome46 => &.{
fix(b, "AppStream-1.0", "common"),
fix(b, "freetype2-2.0", "common"),
},
} else &.{};
if (gir_fixes.len > 0) gir_fixes: {
const libxml2 = b.lazyDependency("libxml2", .{
.target = target,
.optimize = optimize,
.xslt = true,
}) orelse break :gir_fixes;
const xsltproc = libxml2.artifact("xsltproc");
const fixed_files = b.addWriteFiles();
for (gir_fixes) |gir_fix| {
const sep_pos = std.mem.indexOfScalar(u8, gir_fix, '=') orelse @panic("Invalid GIR fix provided (format: module=xslt-path)");
const target_gir = b.fmt("{s}.gir", .{gir_fix[0..sep_pos]});
const source_gir_path = b.pathJoin(&.{ gir_files_path, target_gir });
const xslt_path = gir_fix[sep_pos + 1 ..];
const run_xsltproc = b.addRunArtifact(xsltproc);
run_xsltproc.addArg("-o");
const output_gir = run_xsltproc.addOutputFileArg("gir-fix");
run_xsltproc.addArg(xslt_path);
run_xsltproc.addArg(source_gir_path);
run_xsltproc.extra_file_dependencies = b.dupeStrings(&.{ xslt_path, source_gir_path });
run_xsltproc.expectExitCode(0);
_ = fixed_files.addCopyFile(output_gir, target_gir);
}
codegen_cmd.addArg("--gir-dir");
codegen_cmd.addDirectoryArg(fixed_files.getDirectory());
}
codegen_cmd.addArgs(&.{ "--gir-dir", gir_files_path });
codegen_cmd.addArgs(&.{ "--bindings-dir", b.pathFromRoot("binding-overrides") });
codegen_cmd.addArgs(&.{ "--extensions-dir", b.pathFromRoot("extensions") });
codegen_cmd.addArg("--output-dir");
const bindings_dir = codegen_cmd.addOutputFileArg("bindings");
codegen_cmd.addArgs(&.{ "--abi-test-output-dir", b.pathFromRoot("test/abi") });
codegen_cmd.addArg("--dependency-file");
_ = codegen_cmd.addDepFileOutputArg("codegen-deps");
codegen_cmd.addArgs(codegen_modules);
// This is needed to tell Zig that the command run can be cached despite
// having output files.
codegen_cmd.expectExitCode(0);
const install_bindings = b.addInstallDirectory(.{
.source_dir = bindings_dir,
.install_dir = .prefix,
.install_subdir = "bindings",
});
const codegen_step = b.step("codegen", "Generate all bindings");
codegen_step.dependOn(&install_bindings.step);
}
fn fix(b: *std.Build, module: []const u8, category: []const u8) []const u8 {
const path = b.pathFromRoot(b.fmt("gir-fixes/{s}/{s}.xslt", .{ category, module }));
return b.fmt("{s}={s}", .{ module, path });
}