[swift-dev] Swift build on ppc64le platform

[John McCall]

> On Sep 11, 2017, at 8:57 AM, Meghali Dhoble <dhoblem at us.ibm.com> wrote:
> 
> Hi John,
> No, I haven't made any changes for Clang. What specific changes you think I need to have for Clang?
> 

In lib/Basic/Targets.cpp, you need your target's checkCallingConvention to say that CC_Swift is okay.  You also need to make your ABIInfo implementation in lib/CodeGen/TargetInfo.cpp subclass SwiftABIInfo and implement its methods appropriately for what your target supports.

John.
> 
> One observation I have for LLVM and Clang that even though I have installed them directly using "apt-get install" ; the build-script looks for the SRC_ROOT/llvm and llvm/tools/clang folders. Also the build-script runs the build on top of these folders.
> I understand if we have system installed dependencies then those should be used instead of the building it from source; please correct me if I am wrong here.
> 
> PS: As of now I am building using -m option, the build command is: ./utils/build-script -m -R 
> 
> Thanks,
> Meghali 
> 
> <graycol.gif>John McCall ---09/07/2017 12:29:29 AM---> On Sep 6, 2017, at 3:28 AM, Meghali Dhoble <dhoblem at us.ibm.com> wrote: > Thanks John, for the resp
> 
> From: John McCall <rjmccall at apple.com>
> To: Meghali Dhoble <dhoblem at us.ibm.com>
> Cc: Graydon Hoare <ghoare at apple.com>, swift-dev <swift-dev at swift.org>
> Date: 09/07/2017 12:29 AM
> Subject: Re: [swift-dev] Swift build on ppc64le platform
> Sent by: rjmccall at apple.com
> 
> 
> 
> On Sep 6, 2017, at 3:28 AM, Meghali Dhoble <dhoblem at us.ibm.com <mailto:dhoblem at us.ibm.com>> wrote:
> Thanks John, for the response.
> We have a patch added already for ppc64 support at llvm, however still the failures seen,
> 
> Did you change Clang?
> 
> John.
> I will try to opt for 2nd option and see if that helps.
> 
> Thanks,
> Meghali
> 
> <graycol.gif>John McCall ---08/28/2017 09:59:28 PM---> On Aug 28, 2017, at 9:08 AM, Meghali Dhoble via swift-dev <swift-dev at swift.org <mailto:swift-dev at swift.org>> wrote: > Hi,
> 
> From: John McCall <rjmccall at apple.com <mailto:rjmccall at apple.com>>
> To: Meghali Dhoble <dhoblem at us.ibm.com <mailto:dhoblem at us.ibm.com>>
> Cc: swift-dev <swift-dev at swift.org <mailto:swift-dev at swift.org>>, Graydon Hoare <ghoare at apple.com <mailto:ghoare at apple.com>>
> Date: 08/28/2017 09:59 PM
> Subject: Re: [swift-dev] Swift build on ppc64le platform
> Sent by: rjmccall at apple.com <mailto:rjmccall at apple.com>
> 
> 
> On Aug 28, 2017, at 9:08 AM, Meghali Dhoble via swift-dev <swift-dev at swift.org <mailto:swift-dev at swift.org>> wrote:
> Hi, 
> I have been working towards getting the swift source code built on my power (ppc64le) platform on Ubuntu16.04 OS. 
> I am observing build issues and looking for some help here. Please redirect me if this is not the right place for these questions.
> 
> I would like to understand the pre-requisites and the hardware configurations required to build this language. 
> The error I am getting look like memory issues as the process is being killed abruptly. I am attaching the log herewith for reference.
> 
> I don't see anything like that in the log. It looks like an ordinary compiler error relating to our custom calling convention.
> 
> You need to either
> 1. implement swiftcc in LLVM's ppc64 backend and then teach Clang that it's legal there or
> 2. configure Swift to not try to use it.
> 
> In the short term, I suspect that (2) is the right approach. Graydon was at least thinking about doing some work recently that would be aimed at making it easier to do this kind of configuration; CC'ing him explicitly to see if there's been progress there.
> 
> John.
> 
> 

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