kevin/libsodium
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libsodium/build.zig
Fergus Baker 5191b40acc
Allow other zig projects to use libsodium as a dependency (#1300) 
* fix(build.zig): derive cwd from builder

Using fs.cwd() only resolves the libsodium directory when building from
within libsodium. Deriving the absolute path to the libsodium directory
from the builder allows the build script to be invoked from other
projects.

* feat(build.zig): add options for building libsodium

Added the options to build either the static, shared, and/or tests. The
tests depend on the static library, and therefore imply the static
library.

* feat(build.zig): include header files
2023-09-09 00:39:15 +02:00

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const std = @import("std");
const fmt = std.fmt;
const fs = std.fs;
const heap = std.heap;
const mem = std.mem;
const LibExeObjStep = std.build.LibExeObjStep;
const Target = std.Target;
pub fn build(b: *std.build.Builder) !void {
const root_path = b.pathFromRoot(".");
var cwd = try fs.openDirAbsolute(root_path, .{});
defer cwd.close();
const src_path = "src/libsodium";
const src_dir = try fs.Dir.openIterableDir(cwd, src_path, .{ .no_follow = true });
const target = b.standardTargetOptions(.{});
const optimize = b.standardOptimizeOption(.{});
const enable_benchmarks = b.option(bool, "enable_benchmarks", "Whether tests should be benchmarks.") orelse false;
const benchmarks_iterations = b.option(u32, "iterations", "Number of iterations for benchmarks.") orelse 200;
var build_static = b.option(bool, "static", "Build libsodium as a static library.") orelse true;
const build_shared = b.option(bool, "shared", "Build libsodium as a shared library.") orelse true;
const build_tests = b.option(bool, "test", "Build the tests (implies -Dstatic=true)") orelse true;
if (build_tests) {
build_static = true;
}
const static_lib = b.addStaticLibrary(.{
.name = "sodium",
.target = target,
.optimize = optimize,
});
const shared_lib = b.addSharedLibrary(.{
.name = if (target.isWindows()) "sodium_shared" else "sodium",
.target = target,
.optimize = optimize,
});
// work out which libraries we are building
var libs = std.ArrayList(*LibExeObjStep).init(b.allocator);
defer libs.deinit();
if (build_static) {
try libs.append(static_lib);
}
if (build_shared) {
try libs.append(shared_lib);
}
const prebuilt_version_file_path = "builds/msvc/version.h";
const version_file_path = "include/sodium/version.h";
if (src_dir.dir.access(version_file_path, .{ .mode = .read_only })) {} else |_| {
try cwd.copyFile(prebuilt_version_file_path, src_dir.dir, version_file_path, .{});
}
for (libs.items) |lib| {
if (lib.isDynamicLibrary() and
!(target.isDarwin() or target.isDragonFlyBSD() or target.isFreeBSD() or
target.isLinux() or target.isNetBSD() or target.isOpenBSD() or target.isWindows()))
{
continue;
}
if (optimize != .Debug and !target.isWindows() and !lib.isStaticLibrary()) {
lib.strip = true;
}
b.installArtifact(lib);
lib.installHeader(src_path ++ "/include/sodium.h", "sodium.h");
lib.installHeadersDirectory(src_path ++ "/include/sodium", "sodium");
lib.linkLibC();
lib.addIncludePath(.{ .path = "src/libsodium/include/sodium" });
lib.defineCMacro("_GNU_SOURCE", "1");
lib.defineCMacro("CONFIGURED", "1");
lib.defineCMacro("DEV_MODE", "1");
lib.defineCMacro("HAVE_ATOMIC_OPS", "1");
lib.defineCMacro("HAVE_C11_MEMORY_FENCES", "1");
lib.defineCMacro("HAVE_CET_H", "1");
lib.defineCMacro("HAVE_GCC_MEMORY_FENCES", "1");
lib.defineCMacro("HAVE_INLINE_ASM", "1");
lib.defineCMacro("HAVE_INTTYPES_H", "1");
lib.defineCMacro("HAVE_STDINT_H", "1");
lib.defineCMacro("HAVE_TI_MODE", "1");
if (target.cpu_arch) |arch| {
switch (arch.endian()) {
.Big => lib.defineCMacro("NATIVE_BIG_ENDIAN", "1"),
.Little => lib.defineCMacro("NATIVE_LITTLE_ENDIAN", "1"),
}
}
switch (target.getOsTag()) {
.linux => {
lib.defineCMacro("ASM_HIDE_SYMBOL", ".hidden");
lib.defineCMacro("TLS", "_Thread_local");
lib.defineCMacro("HAVE_CATCHABLE_ABRT", "1");
lib.defineCMacro("HAVE_CATCHABLE_SEGV", "1");
lib.defineCMacro("HAVE_CLOCK_GETTIME", "1");
lib.defineCMacro("HAVE_GETPID", "1");
lib.defineCMacro("HAVE_INLINE_ASM", "1");
lib.defineCMacro("HAVE_MADVISE", "1");
lib.defineCMacro("HAVE_MLOCK", "1");
lib.defineCMacro("HAVE_MMAP", "1");
lib.defineCMacro("HAVE_MPROTECT", "1");
lib.defineCMacro("HAVE_NANOSLEEP", "1");
lib.defineCMacro("HAVE_POSIX_MEMALIGN", "1");
lib.defineCMacro("HAVE_PTHREAD_PRIO_INHERIT", "1");
lib.defineCMacro("HAVE_PTHREAD", "1");
lib.defineCMacro("HAVE_RAISE", "1");
lib.defineCMacro("HAVE_SYSCONF", "1");
lib.defineCMacro("HAVE_SYS_AUXV_H", "1");
lib.defineCMacro("HAVE_SYS_MMAN_H", "1");
lib.defineCMacro("HAVE_SYS_PARAM_H", "1");
lib.defineCMacro("HAVE_SYS_RANDOM_H", "1");
lib.defineCMacro("HAVE_WEAK_SYMBOLS", "1");
},
.windows => {
lib.defineCMacro("HAVE_RAISE", "1");
lib.defineCMacro("HAVE_SYS_PARAM_H", "1");
if (lib.isStaticLibrary()) {
lib.defineCMacro("SODIUM_STATIC", "1");
}
},
.macos => {
lib.defineCMacro("ASM_HIDE_SYMBOL", ".private_extern");
lib.defineCMacro("TLS", "_Thread_local");
lib.defineCMacro("HAVE_ARC4RANDOM", "1");
lib.defineCMacro("HAVE_ARC4RANDOM_BUF", "1");
lib.defineCMacro("HAVE_CATCHABLE_ABRT", "1");
lib.defineCMacro("HAVE_CATCHABLE_SEGV", "1");
lib.defineCMacro("HAVE_CLOCK_GETTIME", "1");
lib.defineCMacro("HAVE_GETENTROPY", "1");
lib.defineCMacro("HAVE_GETPID", "1");
lib.defineCMacro("HAVE_MADVISE", "1");
lib.defineCMacro("HAVE_MEMSET_S", "1");
lib.defineCMacro("HAVE_MLOCK", "1");
lib.defineCMacro("HAVE_MMAP", "1");
lib.defineCMacro("HAVE_MPROTECT", "1");
lib.defineCMacro("HAVE_NANOSLEEP", "1");
lib.defineCMacro("HAVE_POSIX_MEMALIGN", "1");
lib.defineCMacro("HAVE_PTHREAD", "1");
lib.defineCMacro("HAVE_PTHREAD_PRIO_INHERIT", "1");
lib.defineCMacro("HAVE_RAISE", "1");
lib.defineCMacro("HAVE_SYSCONF", "1");
lib.defineCMacro("HAVE_SYS_MMAN_H", "1");
lib.defineCMacro("HAVE_SYS_PARAM_H", "1");
lib.defineCMacro("HAVE_SYS_RANDOM_H", "1");
lib.defineCMacro("HAVE_WEAK_SYMBOLS", "1");
},
.wasi => {
lib.defineCMacro("HAVE_ARC4RANDOM", "1");
lib.defineCMacro("HAVE_ARC4RANDOM_BUF", "1");
lib.defineCMacro("HAVE_CLOCK_GETTIME", "1");
lib.defineCMacro("HAVE_GETENTROPY", "1");
lib.defineCMacro("HAVE_NANOSLEEP", "1");
lib.defineCMacro("HAVE_POSIX_MEMALIGN", "1");
lib.defineCMacro("HAVE_SYS_AUXV_H", "1");
lib.defineCMacro("HAVE_SYS_PARAM_H", "1");
lib.defineCMacro("HAVE_SYS_RANDOM_H", "1");
},
else => {},
}
switch (target.getCpuArch()) {
.x86_64 => {
lib.defineCMacro("HAVE_AMD64_ASM", "1");
lib.defineCMacro("HAVE_AVX_ASM", "1");
lib.defineCMacro("HAVE_CPUID", "1");
lib.defineCMacro("HAVE_MMINTRIN_H", "1");
lib.defineCMacro("HAVE_EMMINTRIN_H", "1");
lib.defineCMacro("HAVE_PMMINTRIN_H", "1");
lib.defineCMacro("HAVE_SMMINTRIN_H", "1");
lib.defineCMacro("HAVE_TMMINTRIN_H", "1");
lib.defineCMacro("HAVE_WMMINTRIN_H", "1");
},
.aarch64, .aarch64_be => {
const cpu_features = target.getCpuFeatures();
const has_neon = cpu_features.isEnabled(@intFromEnum(Target.aarch64.Feature.neon));
const has_crypto = cpu_features.isEnabled(@intFromEnum(Target.aarch64.Feature.crypto));
if (has_neon and has_crypto) {
lib.defineCMacro("HAVE_ARMCRYPTO", "1");
}
},
.wasm32, .wasm64 => {
lib.defineCMacro("__wasm__", "1");
},
else => {},
}
switch (target.getOsTag()) {
.wasi => {
lib.defineCMacro("__wasi__", "1");
},
else => {},
}
switch (target.getCpuArch()) {
.x86_64 => {
lib.target.cpu_features_add.addFeature(@intFromEnum(Target.x86.Feature.sse4_1));
lib.target.cpu_features_add.addFeature(@intFromEnum(Target.x86.Feature.aes));
lib.target.cpu_features_add.addFeature(@intFromEnum(Target.x86.Feature.pclmul));
},
else => {},
}
var allocator = heap.page_allocator;
var walker = try src_dir.walk(allocator);
while (try walker.next()) |entry| {
const name = entry.basename;
if (mem.endsWith(u8, name, ".c")) {
const full_path = try fmt.allocPrint(allocator, "{s}/{s}", .{ src_path, entry.path });
lib.addCSourceFiles(&.{full_path}, &.{
"-fvisibility=hidden",
"-fno-strict-aliasing",
"-fno-strict-overflow",
"-fwrapv",
"-flax-vector-conversions",
});
} else if (mem.endsWith(u8, name, ".S")) {
const full_path = try fmt.allocPrint(allocator, "{s}/{s}", .{ src_path, entry.path });
lib.addAssemblyFile(.{ .path = full_path });
}
}
}
const test_path = "test/default";
const out_bin_path = "zig-out/bin";
const test_dir = try fs.Dir.openIterableDir(cwd, test_path, .{ .no_follow = true });
fs.Dir.makePath(cwd, out_bin_path) catch {};
const out_bin_dir = try fs.Dir.openDir(cwd, out_bin_path, .{});
try test_dir.dir.copyFile("run.sh", out_bin_dir, "run.sh", .{});
var allocator = heap.page_allocator;
var walker = try test_dir.walk(allocator);
if (build_tests) {
while (try walker.next()) |entry| {
const name = entry.basename;
if (mem.endsWith(u8, name, ".exp")) {
try test_dir.dir.copyFile(name, out_bin_dir, name, .{});
continue;
}
if (!mem.endsWith(u8, name, ".c")) {
continue;
}
const exe_name = name[0 .. name.len - 2];
var exe = b.addExecutable(.{
.name = exe_name,
.target = target,
.optimize = optimize,
});
exe.linkLibC();
exe.strip = true;
exe.linkLibrary(static_lib);
exe.addIncludePath(.{ .path = "src/libsodium/include" });
exe.addIncludePath(.{ .path = "test/quirks" });
const full_path = try fmt.allocPrint(allocator, "{s}/{s}", .{ test_path, entry.path });
exe.addCSourceFiles(&.{full_path}, &.{});
if (enable_benchmarks) {
exe.defineCMacro("BENCHMARKS", "1");
var buf: [16]u8 = undefined;
exe.defineCMacro("ITERATIONS", std.fmt.bufPrintIntToSlice(&buf, benchmarks_iterations, 10, .lower, .{}));
}
b.installArtifact(exe);
}
}
}
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