Re: GHC HEAD now needs extra tools to build libffi?

Thanks for getting back to me. (I think you mean `git clean -x -f -d`): I usually omit -x but I'll give it a go and report back. Before I got the issue on a clean checkout I thought it was something I did to the build files. I also tried building the latest release of libffi (v3.2.1) and using it in configure with --with-ffi-includes and --with-ffi-libraries but got the same error. On 10/09/2017 02:40 AM, Moritz Angermann wrote:

Yes, this commit indeed introduced the need for makeinfo, however after some debugging and improved packaging of the external libffi library, this dependency was removed again, and should not be required with the latest head anymore.

Then again this should not result in link issues but rather in build time issues.

The key to libffi is the libffi-tarballs git submodule, which contains the packaged libffi-tarballs. Make sure all your submodules are also updated.

I usually use `git -x -f -d` (read the documentation first) to ensure a clean working tree. Especially as you say you can’t reproduce it on other machines, maybe there is a file in your tree that the cleaning did not catch?

Sent from my iPhone

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On 9 Oct 2017, at 4:31 AM, Thomas Jakway wrote:

I'm on Ubuntu 16.10.

I ran git bisect:

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e515c7f37be97e1c2ccc497ddd0a730e63ddfa82 is the first bad commit commit e515c7f37be97e1c2ccc497ddd0a730e63ddfa82 Author: Moritz Angermann Date: Sat Sep 30 09:31:12 2017 -0400

Allow libffi snapshots

This is rather annoying. I'd prefer to have a stable release to use. However libffi-3.2.1 has been released November 12, 2014, and libffi-4 is TBD. See also https://github.com/libffi/libffi/issues/296

The core reason for this change is that llvm changed the supported assembly to unified syntax, which libffi-3.2.1 does not use, and hence fails to compile for arm with llvm. For refence, see the following issue: https://github.com/libffi/libffi/issues/191.

This diff contains a script to generate a tarball for the `libffi-tarballs` repository from the libffi GitHub repository; as well as the necessary changes to the build system.

Updates libffi-tarballs submodule.

Reviewers: austin, bgamari, hvr

Subscribers: hvr, erikd, rwbarton, thomie

Differential Revision: https://phabricator.haskell.org/D3574

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I can't reproduce it on my other linux computers though.

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On 10/04/2017 02:17 PM, Ben Gamari wrote: Thomas Jakway writes:

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Anyone else getting linker errors?

This is after running

make clean && make distclean && find . -name "*.o" -type f -delete && find . -name "*.hi" -type f -delete

then

./boot && ./configure && make -j5

(ghc-new is not a new checkout, this error is happening on a branch I'm working on, but one that doesn't touch the FFI)

I'm afraid I can't reproduce this. What platform/operating system is this on?

Cheers,

- Ben

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