llvm dev - May 2020 - Ld64.lld cannot find Foundation framework

James, many thanks.

Is there any linker available for Macs that has a freely available binary
version?
I thought maybe that GNU’s linker might fit the bill?

I cannot use Apple’s linker from /usr/bin/ as it is not allowed to make external
calls from a sandboxed app.
Hence my interest in the LLVM lld.
> On 7 May 2020, at 19:21, James Y Knight <jyknight at google.com>
wrote:
> 
> On Thu, May 7, 2020 at 1:54 PM Edmund Furse <edmund.furse at
imitation.uk.com <mailto:edmund.furse at imitation.uk.com>> wrote:
> Thanks for your reply.  Two questions:
> 1). Will ld64.lld be fixed in LLVM v11.0 and when is this likely to be?
> 
> Likely won't be fixed that soon.
> 
> 2). You mention Apple’s linker, by which I assume you mean GNU’s ld.
> 	Is it possible to get a binary version of ld (preferably that does not use
other things from /usr/bin)?
> 
> No, Apple does not use GNU ld, they have their own linker,
"ld64". That's what you ran as /usr/bin/ld on your mac.
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You can always download source tarballs of ld64 from
https://opensource.apple.com/tarballs/ld64/ and build it yourself.
(https://github.com/michaeleisel/zld might also be interesting to you, depending
on what all you plan to use the linker for.)

From: llvm-dev <llvm-dev-bounces at lists.llvm.org> on behalf of Edmund
Furse via llvm-dev <llvm-dev at lists.llvm.org>
Reply-To: Edmund Furse <edmund.furse at imitation.uk.com>
Date: Thursday, May 7, 2020 at 12:16 PM
To: James Y Knight <jyknight at google.com>
Cc: "llvm-dev at lists.llvm.org" <llvm-dev at lists.llvm.org>
Subject: Re: [llvm-dev] Ld64.lld cannot find Foundation framework

James, many thanks.

Is there any linker available for Macs that has a freely available binary
version?
I thought maybe that GNU’s linker might fit the bill?

I cannot use Apple’s linker from /usr/bin/ as it is not allowed to make external
calls from a sandboxed app.
Hence my interest in the LLVM lld.


On 7 May 2020, at 19:21, James Y Knight <jyknight at
google.com<mailto:jyknight at google.com>> wrote:

On Thu, May 7, 2020 at 1:54 PM Edmund Furse <edmund.furse at
imitation.uk.com<mailto:edmund.furse at imitation.uk.com>> wrote:
Thanks for your reply.  Two questions:
1). Will ld64.lld be fixed in LLVM v11.0 and when is this likely to be?

Likely won't be fixed that soon.

2). You mention Apple’s linker, by which I assume you mean GNU’s ld.
Is it possible to get a binary version of ld (preferably that does not use other
things from /usr/bin)?

No, Apple does not use GNU ld, they have their own linker, "ld64".
That's what you ran as /usr/bin/ld on your mac.

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Thank you for your ideas.I have tried both of your suggestions.

1).  Apple’s ld64 downloads ok and the xcodeproj launches ok.  However a build
gives six errors including:
Unable to find sdk ‘Macosx.internal’
tapi/tapi.h file not found
macho-/dyld+priv_h file not found
llvm-c/lto.h file not found
Why cannot Apple provide code that works?  Has anyone managed to overcome these
problems?

2). lzd stores some metadata in /tmp/zld-… and hence will not be allowed in a
Sandboxed app.


> On 7 May 2020, at 20:38, Shoaib Meenai <smeenai at fb.com> wrote:
> 
> You can always download source tarballs of ld64 from
https://opensource.apple.com/tarballs/ld64/
<https://opensource.apple.com/tarballs/ld64/> and build it yourself.
(https://github.com/michaeleisel/zld <https://github.com/michaeleisel/zld>
might also be interesting to you, depending on what all you plan to use the
linker for.)
>  
> From: llvm-dev <llvm-dev-bounces at lists.llvm.org
<mailto:llvm-dev-bounces at lists.llvm.org>> on behalf of Edmund Furse
via llvm-dev <llvm-dev at lists.llvm.org <mailto:llvm-dev at
lists.llvm.org>>
> Reply-To: Edmund Furse <edmund.furse at imitation.uk.com
<mailto:edmund.furse at imitation.uk.com>>
> Date: Thursday, May 7, 2020 at 12:16 PM
> To: James Y Knight <jyknight at google.com <mailto:jyknight at
google.com>>
> Cc: "llvm-dev at lists.llvm.org <mailto:llvm-dev at
lists.llvm.org>" <llvm-dev at lists.llvm.org <mailto:llvm-dev at
lists.llvm.org>>
> Subject: Re: [llvm-dev] Ld64.lld cannot find Foundation framework
>  
> James, many thanks.
>  
> Is there any linker available for Macs that has a freely available binary
version?
> I thought maybe that GNU’s linker might fit the bill?
>  
> I cannot use Apple’s linker from /usr/bin/ as it is not allowed to make
external calls from a sandboxed app.
> Hence my interest in the LLVM lld.
> 
> 
> On 7 May 2020, at 19:21, James Y Knight <jyknight at google.com
<mailto:jyknight at google.com>> wrote:
>  
> On Thu, May 7, 2020 at 1:54 PM Edmund Furse <edmund.furse at
imitation.uk.com <mailto:edmund.furse at imitation.uk.com>> wrote:
> Thanks for your reply.  Two questions:
> 1). Will ld64.lld be fixed in LLVM v11.0 and when is this likely to be?
>  
> Likely won't be fixed that soon.
>  
> 2). You mention Apple’s linker, by which I assume you mean GNU’s ld.
> Is it possible to get a binary version of ld (preferably that does not use
other things from /usr/bin)?
>  
> No, Apple does not use GNU ld, they have their own linker,
"ld64". That's what you ran as /usr/bin/ld on your mac.
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