60cd11bd4b
It had the downside of running all the comptime blocks and resolving all the usingnamespaces of each system, when just trying to discover if the current system is a particular one. For Darwin, where it's nice to use `std.Target.current.isDarwin()`, this demonstrates the utility that #425 would provide.
618 lines
15 KiB
Zig
618 lines
15 KiB
Zig
const std = @import("std.zig");
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const builtin = std.builtin;
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/// TODO Nearly all the functions in this namespace would be
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/// better off if https://github.com/ziglang/zig/issues/425
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/// was solved.
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pub const Target = union(enum) {
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Native: void,
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Cross: Cross,
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pub const Os = enum {
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freestanding,
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ananas,
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cloudabi,
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dragonfly,
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freebsd,
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fuchsia,
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ios,
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kfreebsd,
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linux,
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lv2,
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macosx,
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netbsd,
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openbsd,
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solaris,
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windows,
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haiku,
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minix,
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rtems,
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nacl,
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cnk,
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aix,
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cuda,
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nvcl,
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amdhsa,
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ps4,
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elfiamcu,
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tvos,
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watchos,
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mesa3d,
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contiki,
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amdpal,
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hermit,
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hurd,
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wasi,
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emscripten,
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zen,
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uefi,
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};
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pub const Arch = union(enum) {
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arm: Arm32,
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armeb: Arm32,
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aarch64: Arm64,
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aarch64_be: Arm64,
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aarch64_32: Arm64,
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arc,
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avr,
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bpfel,
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bpfeb,
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hexagon,
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mips,
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mipsel,
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mips64,
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mips64el,
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msp430,
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powerpc,
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powerpc64,
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powerpc64le,
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r600,
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amdgcn,
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riscv32,
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riscv64,
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sparc,
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sparcv9,
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sparcel,
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s390x,
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tce,
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tcele,
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thumb: Arm32,
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thumbeb: Arm32,
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i386,
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x86_64,
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xcore,
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nvptx,
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nvptx64,
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le32,
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le64,
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amdil,
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amdil64,
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hsail,
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hsail64,
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spir,
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spir64,
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kalimba: Kalimba,
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shave,
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lanai,
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wasm32,
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wasm64,
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renderscript32,
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renderscript64,
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pub const Arm32 = enum {
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v8_5a,
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v8_4a,
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v8_3a,
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v8_2a,
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v8_1a,
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v8,
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v8r,
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v8m_baseline,
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v8m_mainline,
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v8_1m_mainline,
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v7,
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v7em,
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v7m,
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v7s,
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v7k,
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v7ve,
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v6,
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v6m,
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v6k,
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v6t2,
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v5,
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v5te,
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v4t,
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};
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pub const Arm64 = enum {
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v8_5a,
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v8_4a,
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v8_3a,
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v8_2a,
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v8_1a,
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v8,
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v8r,
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v8m_baseline,
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v8m_mainline,
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};
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pub const Kalimba = enum {
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v5,
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v4,
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v3,
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};
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pub const Mips = enum {
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r6,
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};
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};
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pub const Abi = enum {
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none,
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gnu,
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gnuabin32,
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gnuabi64,
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gnueabi,
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gnueabihf,
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gnux32,
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code16,
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eabi,
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eabihf,
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elfv1,
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elfv2,
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android,
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musl,
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musleabi,
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musleabihf,
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msvc,
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itanium,
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cygnus,
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coreclr,
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simulator,
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macabi,
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};
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pub const ObjectFormat = enum {
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unknown,
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coff,
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elf,
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macho,
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wasm,
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};
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pub const SubSystem = enum {
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Console,
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Windows,
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Posix,
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Native,
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EfiApplication,
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EfiBootServiceDriver,
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EfiRom,
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EfiRuntimeDriver,
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};
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pub const Cross = struct {
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arch: Arch,
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os: Os,
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abi: Abi,
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};
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pub const current = Target{
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.Cross = Cross{
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.arch = builtin.arch,
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.os = builtin.os,
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.abi = builtin.abi,
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},
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};
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pub fn zigTriple(self: Target, allocator: *std.mem.Allocator) ![]u8 {
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return std.fmt.allocPrint(
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allocator,
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"{}{}-{}-{}",
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@tagName(self.getArch()),
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Target.archSubArchName(self.getArch()),
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@tagName(self.getOs()),
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@tagName(self.getAbi()),
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);
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}
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pub fn allocDescription(self: Target, allocator: *std.mem.Allocator) ![]u8 {
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// TODO is there anything else worthy of the description that is not
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// already captured in the triple?
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return self.zigTriple(allocator);
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}
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pub fn zigTripleNoSubArch(self: Target, allocator: *std.mem.Allocator) ![]u8 {
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return std.fmt.allocPrint(
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allocator,
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"{}-{}-{}",
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@tagName(self.getArch()),
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@tagName(self.getOs()),
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@tagName(self.getAbi()),
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);
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}
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pub fn linuxTriple(self: Target, allocator: *std.mem.Allocator) ![]u8 {
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return std.fmt.allocPrint(
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allocator,
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"{}-{}-{}",
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@tagName(self.getArch()),
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@tagName(self.getOs()),
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@tagName(self.getAbi()),
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);
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}
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pub fn parse(text: []const u8) !Target {
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var it = mem.separate(text, "-");
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const arch_name = it.next() orelse return error.MissingArchitecture;
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const os_name = it.next() orelse return error.MissingOperatingSystem;
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const abi_name = it.next();
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var cross = Cross{
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.arch = try parseArchSub(arch_name),
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.os = try parseOs(os_name),
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.abi = undefined,
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};
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cross.abi = if (abi_name) |n| try parseAbi(n) else defaultAbi(cross.arch, cross.os);
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return Target{ .Cross = cross };
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}
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pub fn defaultAbi(arch: Arch, target_os: Os) Abi {
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switch (arch) {
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.wasm32, .wasm64 => return .musl,
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else => {},
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}
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switch (target_os) {
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.freestanding,
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.ananas,
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.cloudabi,
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.dragonfly,
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.lv2,
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.solaris,
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.haiku,
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.minix,
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.rtems,
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.nacl,
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.cnk,
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.aix,
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.cuda,
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.nvcl,
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.amdhsa,
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.ps4,
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.elfiamcu,
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.mesa3d,
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.contiki,
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.amdpal,
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.zen,
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.hermit,
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=> return .eabi,
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.openbsd,
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.macosx,
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.freebsd,
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.ios,
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.tvos,
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.watchos,
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.fuchsia,
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.kfreebsd,
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.netbsd,
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.hurd,
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=> return .gnu,
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.windows,
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.uefi,
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=> return .msvc,
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.linux,
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.wasi,
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.emscripten,
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=> return .musl,
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}
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}
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pub const ParseArchSubError = error{
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UnknownArchitecture,
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UnknownSubArchitecture,
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};
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pub fn parseArchSub(text: []const u8) ParseArchSubError!Arch {
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const info = @typeInfo(Arch);
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inline for (info.Union.fields) |field| {
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if (mem.eql(u8, text, field.name)) {
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if (field.field_type == void) {
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return (Arch)(@field(Arch, field.name));
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} else {
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const sub_info = @typeInfo(field.field_type);
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inline for (sub_info.Enum.fields) |sub_field| {
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const combined = field.name ++ sub_field.name;
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if (mem.eql(u8, text, combined)) {
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return @unionInit(Arch, field.name, @field(field.field_type, sub_field.name));
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}
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}
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return error.UnknownSubArchitecture;
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}
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}
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}
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return error.UnknownArchitecture;
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}
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pub fn parseOs(text: []const u8) !Os {
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const info = @typeInfo(Os);
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inline for (info.Enum.fields) |field| {
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if (mem.eql(u8, text, field.name)) {
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return @field(Os, field.name);
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}
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}
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return error.UnknownOperatingSystem;
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}
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pub fn parseAbi(text: []const u8) !Abi {
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const info = @typeInfo(Abi);
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inline for (info.Enum.fields) |field| {
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if (mem.eql(u8, text, field.name)) {
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return @field(Abi, field.name);
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}
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}
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return error.UnknownApplicationBinaryInterface;
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}
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fn archSubArchName(arch: Arch) []const u8 {
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return switch (arch) {
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.arm => |sub| @tagName(sub),
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.armeb => |sub| @tagName(sub),
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.thumb => |sub| @tagName(sub),
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.thumbeb => |sub| @tagName(sub),
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.aarch64 => |sub| @tagName(sub),
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.aarch64_be => |sub| @tagName(sub),
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.kalimba => |sub| @tagName(sub),
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else => "",
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};
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}
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pub fn subArchName(self: Target) []const u8 {
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switch (self) {
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.Native => return archSubArchName(builtin.arch),
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.Cross => |cross| return archSubArchName(cross.arch),
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}
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}
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pub fn oFileExt(self: Target) []const u8 {
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return switch (self.getAbi()) {
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.msvc => ".obj",
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else => ".o",
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};
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}
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pub fn exeFileExt(self: Target) []const u8 {
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if (self.isWindows()) {
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return ".exe";
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} else if (self.isUefi()) {
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return ".efi";
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} else if (self.isWasm()) {
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return ".wasm";
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} else {
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return "";
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}
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}
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pub fn staticLibSuffix(self: Target) []const u8 {
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if (self.isWasm()) {
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return ".wasm";
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}
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switch (self.getAbi()) {
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.msvc => return ".lib",
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else => return ".a",
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}
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}
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pub fn dynamicLibSuffix(self: Target) []const u8 {
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if (self.isDarwin()) {
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return ".dylib";
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}
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switch (self.getOs()) {
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.windows => return ".dll",
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else => return ".so",
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}
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}
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pub fn libPrefix(self: Target) []const u8 {
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if (self.isWasm()) {
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return "";
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}
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switch (self.getAbi()) {
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.msvc => return "",
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else => return "lib",
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}
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}
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pub fn getOs(self: Target) Os {
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return switch (self) {
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.Native => builtin.os,
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.Cross => |t| t.os,
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};
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}
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pub fn getArch(self: Target) Arch {
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switch (self) {
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.Native => return builtin.arch,
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.Cross => |t| return t.arch,
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}
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}
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pub fn getAbi(self: Target) Abi {
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switch (self) {
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.Native => return builtin.abi,
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.Cross => |t| return t.abi,
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}
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}
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pub fn isMinGW(self: Target) bool {
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return self.isWindows() and self.isGnu();
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}
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pub fn isGnu(self: Target) bool {
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return switch (self.getAbi()) {
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.gnu, .gnuabin32, .gnuabi64, .gnueabi, .gnueabihf, .gnux32 => true,
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else => false,
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};
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}
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pub fn isDarwin(self: Target) bool {
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return switch (self.getOs()) {
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.ios, .macosx, .watchos, .tvos => true,
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else => false,
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};
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}
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pub fn isWindows(self: Target) bool {
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return switch (self.getOs()) {
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.windows => true,
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else => false,
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};
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}
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pub fn isLinux(self: Target) bool {
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return switch (self.getOs()) {
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.linux => true,
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else => false,
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};
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}
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pub fn isUefi(self: Target) bool {
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return switch (self.getOs()) {
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.uefi => true,
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else => false,
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};
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}
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pub fn isWasm(self: Target) bool {
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return switch (self.getArch()) {
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.wasm32, .wasm64 => true,
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else => false,
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};
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}
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pub fn isFreeBSD(self: Target) bool {
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return switch (self.getOs()) {
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.freebsd => true,
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else => false,
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};
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}
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pub fn isNetBSD(self: Target) bool {
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return switch (self.getOs()) {
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.netbsd => true,
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else => false,
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};
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}
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pub fn wantSharedLibSymLinks(self: Target) bool {
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return !self.isWindows();
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}
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pub fn osRequiresLibC(self: Target) bool {
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return self.isDarwin() or self.isFreeBSD() or self.isNetBSD();
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}
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pub fn getArchPtrBitWidth(self: Target) u32 {
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switch (self.getArch()) {
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.avr,
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.msp430,
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=> return 16,
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.arc,
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.arm,
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.armeb,
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.hexagon,
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.le32,
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.mips,
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.mipsel,
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|
.powerpc,
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.r600,
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.riscv32,
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.sparc,
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|
.sparcel,
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|
.tce,
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.tcele,
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|
.thumb,
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.thumbeb,
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|
.i386,
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.xcore,
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.nvptx,
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|
.amdil,
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|
.hsail,
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|
.spir,
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.kalimba,
|
|
.shave,
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.lanai,
|
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.wasm32,
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.renderscript32,
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.aarch64_32,
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=> return 32,
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.aarch64,
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.aarch64_be,
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.mips64,
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.mips64el,
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.powerpc64,
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.powerpc64le,
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.riscv64,
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|
.x86_64,
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.nvptx64,
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|
.le64,
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.amdil64,
|
|
.hsail64,
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|
.spir64,
|
|
.wasm64,
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|
.renderscript64,
|
|
.amdgcn,
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|
.bpfel,
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|
.bpfeb,
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|
.sparcv9,
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.s390x,
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=> return 64,
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}
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}
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pub const Executor = union(enum) {
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native,
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qemu: []const u8,
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wine: []const u8,
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unavailable,
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};
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pub fn getExternalExecutor(self: Target) Executor {
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if (@TagType(Target)(self) == .Native) return .native;
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// If the target OS matches the host OS, we can use QEMU to emulate a foreign architecture.
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if (self.getOs() == builtin.os) {
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return switch (self.getArch()) {
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.aarch64 => Executor{ .qemu = "qemu-aarch64" },
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.aarch64_be => Executor{ .qemu = "qemu-aarch64_be" },
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.arm => Executor{ .qemu = "qemu-arm" },
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.armeb => Executor{ .qemu = "qemu-armeb" },
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.i386 => Executor{ .qemu = "qemu-i386" },
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.mips => Executor{ .qemu = "qemu-mips" },
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.mipsel => Executor{ .qemu = "qemu-mipsel" },
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.mips64 => Executor{ .qemu = "qemu-mips64" },
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.mips64el => Executor{ .qemu = "qemu-mips64el" },
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.powerpc => Executor{ .qemu = "qemu-ppc" },
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|
.powerpc64 => Executor{ .qemu = "qemu-ppc64" },
|
|
.powerpc64le => Executor{ .qemu = "qemu-ppc64le" },
|
|
.riscv32 => Executor{ .qemu = "qemu-riscv32" },
|
|
.riscv64 => Executor{ .qemu = "qemu-riscv64" },
|
|
.s390x => Executor{ .qemu = "qemu-s390x" },
|
|
.sparc => Executor{ .qemu = "qemu-sparc" },
|
|
.x86_64 => Executor{ .qemu = "qemu-x86_64" },
|
|
else => return .unavailable,
|
|
};
|
|
}
|
|
|
|
if (self.isWindows()) {
|
|
switch (self.getArchPtrBitWidth()) {
|
|
32 => return Executor{ .wine = "wine" },
|
|
64 => return Executor{ .wine = "wine64" },
|
|
else => return .unavailable,
|
|
}
|
|
}
|
|
|
|
return .unavailable;
|
|
}
|
|
};
|