diff --git a/lib/std/zig/system.zig b/lib/std/zig/system.zig index 92f01c419..64c9401db 100644 --- a/lib/std/zig/system.zig +++ b/lib/std/zig/system.zig @@ -292,8 +292,27 @@ pub const NativeTargetInfo = struct { } }, .freebsd => { - // Unimplemented, fall back to default. - // https://github.com/ziglang/zig/issues/4582 + var osreldate: u32 = undefined; + var len: usize = undefined; + + std.os.sysctlbynameZ("kern.osreldate", &osreldate, &len, null, 0) catch |err| switch (err) { + error.NameTooLong => unreachable, // constant, known good value + error.PermissionDenied => unreachable, // only when setting values, + error.SystemResources => unreachable, // memory already on the stack + error.UnknownName => unreachable, // constant, known good value + error.Unexpected => unreachable, // EFAULT: stack should be safe, EISDIR/ENOTDIR: constant, known good value + }; + + // https://www.freebsd.org/doc/en_US.ISO8859-1/books/porters-handbook/versions.html + // Major * 100,000 has been convention since FreeBSD 2.2 (1997) + // Minor * 1(0),000 summed has been convention since FreeBSD 2.2 (1997) + // e.g. 492101 = 4.11-STABLE = 4.(9+2) + const major = osreldate / 100_000; + const minor1 = osreldate % 100_000 / 10_000; // usually 0 since 5.1 + const minor2 = osreldate % 10_000 / 1_000; // 0 before 5.1, minor version since + const patch = osreldate % 1_000; + os.version_range.semver.min = .{ .major = major, .minor = minor1 + minor2, .patch = patch }; + os.version_range.semver.max = .{ .major = major, .minor = minor1 + minor2, .patch = patch }; }, else => { // Unimplemented, fall back to default version range.