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Diffusion Ant (feature/nursery) Code

ant/src/pkg/build.zig
ddfe6237cab5feature/nursery

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build.zig
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const std = @import("std");
fn getEnv(key: []const u8) ?[]const u8 {
return std.process.getEnvVarOwned(std.heap.page_allocator, key) catch null;
}
fn darwinMinVersion(os_tag: ?std.Target.Os.Tag) ?std.Target.Query.OsVersion {
const tag = os_tag orelse return null;
if (tag != .macos) return null;
return .{ .semver = .{ .major = 15, .minor = 0, .patch = 0 } };
}
pub fn build(b: *std.Build) void {
const resolved_target = blk: {
const target_str = getEnv("PKG_TARGET") orelse break :blk b.standardTargetOptions(.{});
defer std.heap.page_allocator.free(target_str);
var it = std.mem.splitScalar(u8, target_str, '-');
const cpu_arch = if (it.next()) |a|
std.meta.stringToEnum(std.Target.Cpu.Arch, a) else null;
const os_tag = if (it.next()) |o| blk2: {
if (std.mem.eql(u8, o, "darwin")) break :blk2 std.Target.Os.Tag.macos;
break :blk2 std.meta.stringToEnum(std.Target.Os.Tag, o);
} else null;
std.debug.print("[zig.build] cpu_arch: {?}\n", .{cpu_arch});
std.debug.print("[zig.build] os_tag: {?}\n", .{os_tag});
break :blk b.resolveTargetQuery(.{
.cpu_arch = cpu_arch,
.os_tag = os_tag,
.os_version_min = darwinMinVersion(os_tag),
.cpu_model = .baseline,
});
};
const lmdb_include = getEnv("LMDB_INCLUDE");
const zlib_include = getEnv("ZLIB_INCLUDE");
const libuv_include = getEnv("LIBUV_INCLUDE");
const yyjson_include = getEnv("YYJSON_INCLUDE");
const lib = b.addLibrary(.{
.name = "pkg",
.root_module = b.createModule(.{
.root_source_file = b.path("root.zig"),
.target = resolved_target,
.optimize = .ReleaseFast,
.link_libc = true,
.link_libcpp = true,
.omit_frame_pointer = true,
.unwind_tables = .none,
.strip = true,
}),
});
lib.use_llvm = true;
if (!resolved_target.result.os.tag.isDarwin()) lib.use_lld = true;
lib.addCSourceFile(.{
.file = b.path("metadata.c"),
.flags = &.{ "-O3", "-DNDEBUG" },
});
const version = getEnv("ANT_VERSION") orelse "unknown";
const options = b.addOptions();
options.addOption([]const u8, "version", version);
lib.root_module.addOptions("config", options);
lib.root_module.addCMacro("NDEBUG", "1");
if (lmdb_include) |p| lib.root_module.addIncludePath(.{ .cwd_relative = p });
if (zlib_include) |p| lib.root_module.addIncludePath(.{ .cwd_relative = p });
if (libuv_include) |p| lib.root_module.addIncludePath(.{ .cwd_relative = p });
if (yyjson_include) |p| lib.root_module.addIncludePath(.{ .cwd_relative = p });
b.installArtifact(lib);
}

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