Simon Peyton Jones simonpj at microsoft.com
Wed Jan 9 11:24:01 UTC 2019

A quick note about that 'make.md' document: it's meant as a quick reference/cheatsheet (hence the _very_ lightweight format) for people familiar with the make build system. Hadrian's README [1] is a better place to start from in general

OK super: can you say that at the start of https://gitlab.haskell.org/ghc/ghc/blob/master/hadrian/doc/make.md?

And point to https://gitlab.haskell.org/ghc/ghc/blob/master/hadrian/doc/make.md from the more comprehensive page.

So in the end they both refer to each other


From: Alp Mestanogullari <alp at well-typed.com>
Sent: 09 January 2019 11:10
To: Simon Peyton Jones <simonpj at microsoft.com>
Cc: ghc-devs <ghc-devs at haskell.org>
Subject: Re: Hadrian


A quick note about that 'make.md' document: it's meant as a quick reference/cheatsheet (hence the _very_ lightweight format) for people familiar with the make build system. Hadrian's README [1] is a better place to start from in general and in fact answers or points to documents that answer some of your questions. I would perhaps recommend that you (and others) wander through that document and any other doc that seems relevant to your interests/workflow (e.g testsuite.md, user-settings.md in your case)

Hadrian is however currently lacking some knobs that are needed to support some of the things you're asking about. None of this implies a lot of work and they're all on my TODO. I will certainly make sure to post an update once this is taken care of, in addition to augmenting the relevant documents of course. For instance, we don't have a 'validate' rule at the moment, but we've now got all the pieces we need to write it.

Once I get around to adding those knobs, I'll make sure that all your questions are answered in the documentation.

Thanks for your initial feedback on this document!

[1] https://gitlab.haskell.org/ghc/ghc/blob/master/hadrian/README.md<https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitlab.haskell.org%2Fghc%2Fghc%2Fblob%2Fmaster%2Fhadrian%2FREADME.md&data=02%7C01%7Csimonpj%40microsoft.com%7C3025665679274a8486c808d676230b41%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636826290225890158&sdata=3ujKmq%2Ftj20oEEsTswgP2DRkXJ5bLHFSfGiMmBQKmZo%3D&reserved=0>
On 08/01/2019 17:29, Simon Peyton Jones wrote:
You've written a helpful wiki page describing how to use Hadrian
Could you document where build-products live?  I often look at .hi files.
Could you add

  *   How to do the equivalent of "sh validate"
  *   When validating, how to do things like this:

GhcStage1HcOpts += -DDEBUG -O

GhcStage2HcOpts += -Wwarn -ticky

GhcLibHcOpts +=  -ticky -Wwarn


SplitObjs       = YES




  *   After modifying the source code, how to make stage1 compiler (only). In 'make' it is

$ cd compiler; make 1

  *   After modifying the source code, build the stage2 compiler (only).  In 'make' it is

$ cd compiler; make 2

Perhaps you say  build -freeze1?

  *   In the testsuite, how to use the stage1 compiler

$ make stage=1 TEST=T2543

  *   In nofib, how to build one benchmark, with extra flags, perhaps even with the stage1 compiler

$ make stage=1 EXTRA_HC_OPTS="-ticky -ddump-simpl -ddump-stg"



Alp Mestanogullari, Haskell Consultant

Well-Typed LLP, https://www.well-typed.com/<https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.well-typed.com%2F&data=02%7C01%7Csimonpj%40microsoft.com%7C3025665679274a8486c808d676230b41%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636826290225900167&sdata=Oau6Enlm1yNMWM61U%2F8rUIwyTMQubwM3oEGXOQwNAS4%3D&reserved=0>

Registered in England and Wales, OC335890

118 Wymering Mansions, Wymering Road, London, W9 2NF, England
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.haskell.org/pipermail/ghc-devs/attachments/20190109/21f98ab6/attachment.html>

More information about the ghc-devs mailing list