#8127: iOS patch no 19: Linking -------------------------------------+------------------------------------- Reporter: | Owner: StephenBlackheath | Status: patch Type: bug | Milestone: Priority: normal | Version: 7.7 Component: Compiler | Keywords: Resolution: | Architecture: arm Operating System: Other | Difficulty: Moderate (less Type of failure: GHC doesn't work | than a day) at all | Blocked By: Test Case: | Related Tickets: Blocking: 7724 | -------------------------------------+------------------------------------- Comment (by maxs): This patch adds an option to link everything into a static archive on Mac. I.e. {{{ ghc -staticlib Foo.hs # -> liba.a }}} You can then link liba.a with with some C object files with gcc. Since GHC iOS requires this, it will always use this. It uses Mac's libtool and will require changes to work on Linux and Windows. (I think Windows users would prefer the DLL option instead anyway) Libtool will also emit a lot of warnings, I think this is because libtool doesn't understand the contents of the haskell archives. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8127#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#8127: iOS patch no 19: Linking -------------------------------------+------------------------------------- Reporter: | Owner: StephenBlackheath | Status: patch Type: bug | Milestone: Priority: normal | Version: 7.7 Component: Compiler | Keywords: Resolution: | Architecture: arm Operating System: Other | Difficulty: Moderate (less Type of failure: GHC doesn't work | than a day) at all | Blocked By: Test Case: | Related Tickets: Blocking: 7724 | -------------------------------------+------------------------------------- Comment (by thoughtpolice): LGTM for the most part. A few notes: * Does `-staticlib` make sense on other systems? Could I also, for example create a `.a` on Linux and link it into something there with a foreign build system. If so, it should be clear. If not, I'd at least like a defensive warning that `-staticlib` is only supported when the OS is `OSiOS`. * On that note, I'd prefer it if 'libtool' was overrideable, since we may not be sure what libtool someone is exactly using, and breaking this convention seems awkward. I'm not very picky on a flag name, but 'libtool' is certinly a fine default (and requires no more effort for iOS.) * If it's actually possible to do this, can we see some tests? The build system should support you creating an '.a' file and linking it, but if this is too complicated please say so. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8127#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#8127: iOS patch no 19: Linking -------------------------------------+------------------------------------- Reporter: | Owner: StephenBlackheath | Status: patch Type: bug | Milestone: Priority: normal | Version: 7.7 Component: Compiler | Keywords: Resolution: | Architecture: arm Operating System: Other | Difficulty: Moderate (less Type of failure: GHC doesn't work | than a day) at all | Blocked By: Test Case: | Related Tickets: Blocking: 7724 | -------------------------------------+------------------------------------- Comment (by Austin Seipp ): In [changeset:98b0d05de35bd531102d832f3108050549fd781f/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="98b0d05de35bd531102d832f3108050549fd781f" Rework how iOS does linking (#8127) iOS has some particular constraints about how applications can be built: * We must generate a static library (.a) since XCode does the final link. * We need to carefully give the right set of arguments to libtool in the case we're generating an archive. * Dynamic linking isn't supported. * It can only be done on OS X. This patch cleans up all of the above. We add a new flag `-staticlib` (only supported on Darwin) that allows us to produce archive files using libtool, and a -pgmlibtool flag to control which 'libtool' executable to use. This fixes #8127. I believe this is the last piece missing from the iOS cross compiler. Authored-by: Luke Iannini Authored-by: Maxwell Swadling Authored-by: Stephen Blackheath <...@blacksapphire.com> Signed-off-by: Austin Seipp }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8127#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#8127: iOS patch no 19: Linking -------------------------------------+------------------------------------- Reporter: | Owner: StephenBlackheath | Status: patch Type: bug | Milestone: Priority: normal | Version: 7.7 Component: Compiler | Keywords: Resolution: | Architecture: arm Operating System: Other | Difficulty: Moderate (less Type of failure: GHC doesn't work | than a day) at all | Blocked By: Test Case: | Related Tickets: Blocking: 7724 | -------------------------------------+------------------------------------- Comment (by StephenBlackheath): This is indeed the last piece of the iOS cross compiler, announcement at http://www.reddit.com/r/haskell/comments/1lboh4/announcing_ghc_ios/ Thanks very much for your work Austin, Ian & Simon M! I have not forgotten that I promised to review #7723. I will do that soon. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8127#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#8127: iOS patch no 19: Linking -------------------------------------+------------------------------------- Reporter: | Owner: StephenBlackheath | Status: closed Type: bug | Milestone: Priority: normal | Version: 7.7 Component: Compiler | Keywords: Resolution: fixed | Architecture: arm Operating System: Other | Difficulty: Moderate (less Type of failure: GHC doesn't work | than a day) at all | Blocked By: Test Case: | Related Tickets: Blocking: 7724 | -------------------------------------+------------------------------------- Changes (by thoughtpolice): * status: patch => closed * resolution: => fixed Comment: Merged, thanks! {{{ commit 629f393175b3800e714671b3e4a07b25d2a8edf3 Author: Luke Iannini Date: Sat Aug 31 22:49:16 2013 -0700 Test for -staticlib flag Signed-off-by: Austin Seipp }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8127#comment:10 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#8127: iOS patch no 19: Linking -------------------------------------+------------------------------------- Reporter: | Owner: StephenBlackheath | Status: new Type: bug | Milestone: Priority: normal | Version: 7.7 Component: Compiler | Keywords: Resolution: | Architecture: arm Operating System: MacOS X | Test Case: Type of failure: GHC doesn't work | Blocking: 7724 at all | Differential Revisions: Blocked By: | Related Tickets: | -------------------------------------+------------------------------------- Changes (by thomie): * status: closed => new * resolution: fixed => * os: Other => MacOS X Comment: Reopening this ticket so that we don't forget to fix the test. In commit cd3e3455d4c5307ab4f089209181d7c8e457173d: {{{ Author: Austin Seipp <> Date: Mon Jan 13 08:40:28 2014 -0600 Mark static001 as failing Right now the stderr output doesn't match because we don't suppress some libtool errors, but these seem to be benign... }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8127#comment:12 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#8127: iOS patch no 19: Linking -------------------------------------+------------------------------------- Reporter: | Owner: StephenBlackheath | Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.7 (Linking) | Resolution: | Keywords: easy Operating System: MacOS X | Architecture: arm Type of failure: GHC doesn't work | Test Case: at all | Blocked By: | Blocking: 7724 Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by ezyang): * keywords: => easy -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8127#comment:14 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler