zig/src/print_targets.zig at link-tests · dominictarr/zig

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const std = @import("std");

const fs = std.fs;

const io = std.io;

const mem = std.mem;

const Allocator = mem.Allocator;

const Target = std.Target;

const target = @import("target.zig");

const assert = std.debug.assert;

const glibc = @import("glibc.zig");

const introspect = @import("introspect.zig");

const fatal = @import("main.zig").fatal;

pub fn cmdTargets(

allocator: Allocator,

args: []const []const u8,

/// Output stream

stdout: anytype,

native_target: Target,

) !void {

_ = args;

var zig_lib_directory = introspect.findZigLibDir(allocator) catch |err| {

fatal("unable to find zig installation directory: {s}\n", .{@errorName(err)});

};

defer zig_lib_directory.handle.close();

defer allocator.free(zig_lib_directory.path.?);

const glibc_abi = try glibc.loadMetaData(allocator, zig_lib_directory.handle);

defer glibc_abi.destroy(allocator);

var bw = io.bufferedWriter(stdout);

const w = bw.writer();

var jws = std.json.WriteStream(@TypeOf(w), 6).init(w);

try jws.beginObject();

try jws.objectField("arch");

try jws.beginArray();

{

inline for (@typeInfo(Target.Cpu.Arch).Enum.fields) |field| {

try jws.arrayElem();

try jws.emitString(field.name);

}

try jws.endArray();

try jws.objectField("os");

try jws.beginArray();

inline for (@typeInfo(Target.Os.Tag).Enum.fields) |field| {

try jws.arrayElem();

try jws.emitString(field.name);

}

try jws.endArray();

try jws.objectField("abi");

try jws.beginArray();

inline for (@typeInfo(Target.Abi).Enum.fields) |field| {

try jws.arrayElem();

try jws.emitString(field.name);

}

try jws.endArray();

try jws.objectField("libc");

try jws.beginArray();

for (target.available_libcs) |libc| {

const tmp = try std.fmt.allocPrint(allocator, "{s}-{s}-{s}", .{

@tagName(libc.arch), @tagName(libc.os), @tagName(libc.abi),

});

defer allocator.free(tmp);

try jws.arrayElem();

try jws.emitString(tmp);

}

try jws.endArray();

try jws.objectField("glibc");

try jws.beginArray();

for (glibc_abi.all_versions) |ver| {

try jws.arrayElem();

const tmp = try std.fmt.allocPrint(allocator, "{}", .{ver});

defer allocator.free(tmp);

try jws.emitString(tmp);

}

try jws.endArray();

try jws.objectField("cpus");

try jws.beginObject();

inline for (@typeInfo(Target.Cpu.Arch).Enum.fields) |field| {

try jws.objectField(field.name);

try jws.beginObject();

const arch = @field(Target.Cpu.Arch, field.name);

for (arch.allCpuModels()) |model| {

try jws.objectField(model.name);

try jws.beginArray();

for (arch.allFeaturesList()) |feature, i| {

if (model.features.isEnabled(@intCast(u8, i))) {

try jws.arrayElem();

try jws.emitString(feature.name);

}

try jws.endArray();

}

try jws.endObject();

}

try jws.endObject();

try jws.objectField("cpuFeatures");

try jws.beginObject();

inline for (@typeInfo(Target.Cpu.Arch).Enum.fields) |field| {

try jws.objectField(field.name);

try jws.beginArray();

const arch = @field(Target.Cpu.Arch, field.name);

for (arch.allFeaturesList()) |feature| {

try jws.arrayElem();

try jws.emitString(feature.name);

}

try jws.endArray();

}

try jws.endObject();

try jws.objectField("native");

try jws.beginObject();

{

const triple = try native_target.zigTriple(allocator);

defer allocator.free(triple);

try jws.objectField("triple");

try jws.emitString(triple);

}

{

try jws.objectField("cpu");

try jws.beginObject();

try jws.objectField("arch");

try jws.emitString(@tagName(native_target.cpu.arch));

try jws.objectField("name");

const cpu = native_target.cpu;

try jws.emitString(cpu.model.name);

{

try jws.objectField("features");

try jws.beginArray();

for (native_target.cpu.arch.allFeaturesList()) |feature, i_usize| {

const index = @intCast(Target.Cpu.Feature.Set.Index, i_usize);

if (cpu.features.isEnabled(index)) {

try jws.arrayElem();

try jws.emitString(feature.name);

}

try jws.endArray();

}

try jws.endObject();

}

try jws.objectField("os");

try jws.emitString(@tagName(native_target.os.tag));

try jws.objectField("abi");

try jws.emitString(@tagName(native_target.abi));

try jws.endObject();

try w.writeByte('\n');

return bw.flush();

}

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