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const std = @import("std");
pub fn build(b: *std.Build) !void {
const target = b.standardTargetOptions(.{});
const optimize = b.standardOptimizeOption(.{});
const upstream_ = b.lazyDependency("highway", .{});
const module = b.addModule("highway", .{
.root_source_file = b.path("src/main.zig"),
.target = target,
.optimize = optimize,
});
const lib = b.addLibrary(.{
.name = "highway",
.root_module = b.createModule(.{
.root_source_file = b.path("src/detect.zig"),
.target = target,
.optimize = optimize,
// Our highway package is free of libc at runtime (uses no symbols)
// but does require libc headers at compile time.
.link_libc = true,
}),
.linkage = .static,
});
lib.root_module.addIncludePath(b.path("src/cpp"));
if (upstream_) |upstream| {
lib.root_module.addIncludePath(upstream.path(""));
module.addIncludePath(upstream.path(""));
}
if (target.result.abi.isAndroid()) {
const android_ndk = @import("android_ndk");
try android_ndk.addPaths(b, lib);
}
// Mainly for iOS simulators, but we add for all Darwin target for
// consistency.
if (target.result.os.tag.isDarwin()) {
const apple_sdk = @import("apple_sdk");
try apple_sdk.addPaths(b, lib);
}
var flags: std.ArrayList([]const u8) = .empty;
defer flags.deinit(b.allocator);
try flags.appendSlice(b.allocator, &.{
// Highway can avoid libc++ entirely as long as all users compile
// against the headers with the same define.
"-DHWY_NO_LIBCXX",
// Avoid changing binaries based on the current time and date.
"-Wno-builtin-macro-redefined",
"-D__DATE__=\"redacted\"",
"-D__TIMESTAMP__=\"redacted\"",
"-D__TIME__=\"redacted\"",
// Optimizations
"-fmerge-all-constants",
// Warnings
"-Wall",
"-Wextra",
// These are not included in Wall nor Wextra:
"-Wconversion",
"-Wsign-conversion",
"-Wvla",
"-Wnon-virtual-dtor",
"-Wfloat-overflow-conversion",
"-Wfloat-zero-conversion",
"-Wfor-loop-analysis",
"-Wgnu-redeclared-enum",
"-Winfinite-recursion",
"-Wself-assign",
"-Wstring-conversion",
"-Wtautological-overlap-compare",
"-Wthread-safety-analysis",
"-Wundefined-func-template",
"-fno-cxx-exceptions",
"-fno-slp-vectorize",
"-fno-vectorize",
// Fixes linker issues for release builds missing ubsanitizer symbols
"-fno-sanitize=undefined",
"-fno-sanitize-trap=undefined",
});
if (target.result.os.tag == .freebsd or target.result.os.tag == .linux) {
try flags.append(b.allocator, "-fPIC");
lib.root_module.pic = true;
}
if (target.result.os.tag != .windows) {
try flags.appendSlice(b.allocator, &.{
"-fmath-errno",
"-fno-exceptions",
});
} else if (target.result.abi == .msvc) {
try flags.appendSlice(b.allocator, &.{
// -fno-autolink also drops UCRT's /alternatename fallback.
"-D_Avx2WmemEnabledWeakValue=_Avx2WmemEnabled",
"-fno-autolink",
"-fno-stack-protector",
});
}
lib.root_module.addCSourceFiles(.{ .flags = flags.items, .files = &.{
"src/cpp/abort.cc",
"src/cpp/per_target.cc",
"src/cpp/targets.cpp",
} });
if (upstream_) |upstream| {
lib.installHeadersDirectory(
upstream.path("hwy"),
"hwy",
.{ .include_extensions = &.{".h"} },
);
}
b.installArtifact(lib);
{
const test_exe = b.addTest(.{
.name = "test",
.root_module = b.createModule(.{
.root_source_file = b.path("src/main.zig"),
.target = target,
.optimize = optimize,
}),
});
test_exe.root_module.linkLibrary(lib);
var it = module.import_table.iterator();
while (it.next()) |entry| test_exe.root_module.addImport(entry.key_ptr.*, entry.value_ptr.*);
const tests_run = b.addRunArtifact(test_exe);
const test_step = b.step("test", "Run tests");
test_step.dependOn(&tests_run.step);
}
}
|
