llvm dev - Dec 2013 - [LLVMdev] How do I disable --version-script when cross compiling clang/LLVM on a Mac?

Hi,

I asked this question a few days ago and didn't get any responses. I 
thought I'd try again with a little more detail.

I am trying to cross compile my clang/LLVM based ELLCC cross development 
tools project (http://ellcc.org)  on a Mac. I am targeting ARM/Linux. 
The build fails while building FileCheck (or tbl-gen or any of the other 
build tools built during the cross-compile-build-tools step) because the 
build rules try to pass the --version-script option to the linker. There 
is a lot of configure magic going on and I can't seem to find the spell 
that says not to use --version-script on a Mac.

A little clarification of my problem. ELLCC builds fine on a Mac and 
creates executables that can be used to create ARM/Linux programs (or 
Mips/Linux, Microblaze/Linux, PowerPC/Linux, etc). The trouble I'm 
having is when I try to make ELLCC compile itself for the target.

clang/LLVM needs several tools that it supplies that need to run on the 
build host. Those tools are being compiled properly as Mac executables 
using the native Mac clang, but the link stage is mixed up and trying to 
use --version-script even though the Mac linker doesn't support it.

Thanks in advance for any help.

-Rich

On 21/12/2013 22:51, Richard Pennington wrote:
> Hi,
>
> I asked this question a few days ago and didn't get any responses. I 
> thought I'd try again with a little more detail.
>
> I am trying to cross compile my clang/LLVM based ELLCC cross 
> development tools project (http://ellcc.org)
Hi Richard,

Nobody replied because your question lacks immediate relevance to this 
mailing list.

You may have more luck if you pose your question in a way that relates 
to, and can be tried using stock LLVM/clang.

If you think there's a bug, you can also file a bug report at 
http://llvm.org/bugs/ including the steps needed to reproduce the issue.

Feel free to CC me in, hope we can set you in the right direction.

Alp.



> on a Mac. I am targeting ARM/Linux. The build fails while building 
> FileCheck (or tbl-gen or any of the other build tools built during the 
> cross-compile-build-tools step) because the build rules try to pass 
> the --version-script option to the linker. There is a lot of configure 
> magic going on and I can't seem to find the spell that says not to use 
> --version-script on a Mac.
>
> A little clarification of my problem. ELLCC builds fine on a Mac and 
> creates executables that can be used to create ARM/Linux programs (or 
> Mips/Linux, Microblaze/Linux, PowerPC/Linux, etc). The trouble I'm 
> having is when I try to make ELLCC compile itself for the target.
>
> clang/LLVM needs several tools that it supplies that need to run on 
> the build host. Those tools are being compiled properly as Mac 
> executables using the native Mac clang, but the link stage is mixed up 
> and trying to use --version-script even though the Mac linker doesn't 
> support it.
>
> Thanks in advance for any help.
>
> -Rich
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
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On 12/21/2013 05:21 PM, Alp Toker wrote:
>
> On 21/12/2013 22:51, Richard Pennington wrote:
>> Hi,
>>
>> I asked this question a few days ago and didn't get any responses.
I
>> thought I'd try again with a little more detail.
>>
>> I am trying to cross compile my clang/LLVM based ELLCC cross 
>> development tools project (http://ellcc.org)
>
> Hi Richard,
>
> Nobody replied because your question lacks immediate relevance to this 
> mailing list.
>
> You may have more luck if you pose your question in a way that relates 
> to, and can be tried using stock LLVM/clang.
>
> If you think there's a bug, you can also file a bug report at 
> http://llvm.org/bugs/ including the steps needed to reproduce the issue.
>
> Feel free to CC me in, hope we can set you in the right direction.
>
> Alp.
>
Hi Alp,

I hope you don't think I was whining about the lack of response, I 
wasn't. This list has always been extremely helpful. I understand that 
my use case is a bit out the norm.

I was just hoping that someone more familiar with the clang/LLVM cross 
build rules might be able to shed a little insight. I suspect that there 
aren't too many people using clang/LLVM to cross build for Linux on a 
Mac. The normal cross build on a Linux box for another Linux target 
works just fine.

-Rich