120 lines
4.4 KiB
Zig
120 lines
4.4 KiB
Zig
const std = @import("std");
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const builtin = @import("builtin");
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const math = @import("math");
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pub fn build(b: *std.Build) void {
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const target = b.standardTargetOptions(.{});
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const optimize = b.standardOptimizeOption(.{});
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const static_llvm = b.option(bool, "static-llvm", "Statically link LLVM (self-contained binary, no LLVM needed at runtime)") orelse false;
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const llvm_prefix = b.option([]const u8, "llvm-prefix", "Path to LLVM installation") orelse "/opt/homebrew/opt/llvm@18";
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const include_dir = b.fmt("{s}/include", .{llvm_prefix});
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const lib_dir = b.fmt("{s}/lib", .{llvm_prefix});
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const llvm_config = b.fmt("{s}/bin/llvm-config", .{llvm_prefix});
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const mod = b.addModule("sx", .{
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.root_source_file = b.path("src/root.zig"),
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.target = target,
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.optimize = optimize,
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});
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mod.addSystemIncludePath(.{ .cwd_relative = include_dir });
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mod.addLibraryPath(.{ .cwd_relative = lib_dir });
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mod.link_libc = true;
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mod.addCSourceFile(.{
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.file = b.path("llvm_shim.c"),
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.flags = &.{b.fmt("-I{s}", .{include_dir})},
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});
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if (static_llvm) {
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if (builtin.os.tag == .windows) {
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// Windows: no llvm-config available; enumerate LLVM .lib files directly
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var dir = std.fs.openDirAbsolute(lib_dir, .{ .iterate = true }) catch
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@panic("Cannot open LLVM lib directory");
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defer dir.close();
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var it = dir.iterate();
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while (it.next() catch null) |entry| {
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if (entry.kind == .file and
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std.mem.startsWith(u8, entry.name, "LLVM") and
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std.mem.endsWith(u8, entry.name, ".lib"))
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{
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mod.linkSystemLibrary(
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entry.name[0 .. entry.name.len - 4],
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.{ .preferred_link_mode = .static },
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);
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}
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}
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// Windows system libraries LLVM depends on
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const win_syslibs = [_][]const u8{
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"advapi32", "shell32", "ole32", "uuid",
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"psapi", "version", "ntdll", "ws2_32",
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"dbghelp",
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};
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for (&win_syslibs) |syslib| {
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mod.linkSystemLibrary(syslib, .{});
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}
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} else {
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// Unix: query llvm-config for the static libraries needed
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const libs_raw = std.mem.trim(u8, b.run(&.{ llvm_config, "--libs", "--link-static" }), " \t\n\r");
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var libs_it = std.mem.tokenizeAny(u8, libs_raw, " \t\n\r");
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while (libs_it.next()) |flag| {
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if (flag.len > 2 and std.mem.startsWith(u8, flag, "-l")) {
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mod.linkSystemLibrary(flag[2..], .{ .preferred_link_mode = .static });
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}
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}
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// System libraries LLVM depends on (zlib, zstd, curses, etc.)
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const syslibs_raw = std.mem.trim(u8, b.run(&.{ llvm_config, "--system-libs", "--link-static" }), " \t\n\r");
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var syslibs_it = std.mem.tokenizeAny(u8, syslibs_raw, " \t\n\r");
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while (syslibs_it.next()) |flag| {
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if (flag.len > 2 and std.mem.startsWith(u8, flag, "-l")) {
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mod.linkSystemLibrary(flag[2..], .{});
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}
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}
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}
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// LLVM is C++ — link the C++ standard library
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mod.link_libcpp = true;
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} else {
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mod.linkSystemLibrary("LLVM-18", .{});
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}
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const exe = b.addExecutable(.{
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.name = "sx",
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.root_module = b.createModule(.{
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.root_source_file = b.path("src/main.zig"),
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.target = target,
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.optimize = optimize,
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.imports = &.{
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.{ .name = "sx", .module = mod },
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},
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}),
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});
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b.installArtifact(exe);
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const run_step = b.step("run", "Run the app");
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const run_cmd = b.addRunArtifact(exe);
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run_step.dependOn(&run_cmd.step);
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run_cmd.step.dependOn(b.getInstallStep());
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if (b.args) |args| {
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run_cmd.addArgs(args);
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}
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const mod_tests = b.addTest(.{
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.root_module = mod,
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});
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const run_mod_tests = b.addRunArtifact(mod_tests);
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const exe_tests = b.addTest(.{
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.root_module = exe.root_module,
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});
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const run_exe_tests = b.addRunArtifact(exe_tests);
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const test_step = b.step("test", "Run tests");
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test_step.dependOn(&run_mod_tests.step);
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test_step.dependOn(&run_exe_tests.step);
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}
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