iOS 11.2 SDK Foundation build error: Nullability specifier

[OAmAr]

Hello,
I'm new to tweak development and am trying to use theos to make a test tweak. When running make package I'm getting 11 errors (full file null_error.txt) that seem to stem from the Foundation module failing to compile.
I am using the up to date SDK from the repo, and I've also tried using the last sdk posted in #10. I'm developing on an ubuntu 16.04 machine
The first error is:

While building module 'Foundation' imported from /home/omar/theos/Prefix.pch:11:
In file included from <module-includes>:2:
In file included from /home/omar/theos/sdks/iPhoneOS11.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h:128:
/home/omar/theos/sdks/iPhoneOS11.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSUUID.h:26:49: error: nullability specifier '_Nullable' cannot be applied to non-pointer type 'uuid_t' (aka 'unsigned char [16]')
- (instancetype)initWithUUIDBytes:(const uuid_t _Nullable)bytes;
                                                ^
/home/omar/theos/sdks/iPhoneOS11.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSUUID.h:29:30: error: nullability specifier '_Nonnull' cannot be applied to non-pointer type 'uuid_t' (aka 'unsigned char [16]')
- (void)getUUIDBytes:(uuid_t _Nonnull)uuid;

Then there are 10 more errors of the form:

n file included from <built-in>:1:
/home/omar/theos/Prefix.pch:11:11: fatal error: could not build module 'Foundation'
                #import <Foundation/Foundation.h>
                 ~~~~~~~^
While building module 'UIKit' imported from /home/omar/theos/Prefix.pch:20:
In file included from <module-includes>:2:
In file included from /home/omar/theos/sdks/iPhoneOS11.2.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIKit.h:11:

[kirb]

Linux/Cygwin toolchains are fairly old, they don’t support some more recent features the iOS 10+ SDKs use. The newest you can use is 9.3 till those toolchains get updated.

[OAmAr]

Oh I see, that's unfortunate :( Thanks for the quick response!

[TheGithubJoshua]

@kirb have the toolchains been updated yet? On Linux and am getting the same error.

[L1ghtmann]

@TheGithubJoshua yes they have. If you're encountering a problem, please open a new issue.