[Haskell-iPhone] ld: warning with HEAD

Sat Dec 21 01:10:07 UTC 2013

I'll sum up the process I'm going through. I `cd` into Blocks where
Blocks.cabal lives, then I do a `arm-apple-darwin10-cabal
--config-file=path/to/arm/config build`. The config file was created by
arm-apple-darwin10-cabal the first time I ran it. The build ends in two
different ways depending on the `ghc-options` field in the Blocks.cabal
file. With ghc-options: -staticlib -threaded it errors (or warns, or
outputs - as it isn't specified):

Resolving dependencies...

Configuring Blocks-0.1.0.0...

Building Blocks-0.1.0.0...

Preprocessing executable 'Blocks' for Blocks-0.1.0.0...

Linking dist-arm/build/Blocks/Blocks.a ...

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool:
can't locate file for: -lpthread
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool:
file: -lpthread is not an object file (not allowed in a library)

With ghc-options: -staticlib it looks like the build completes (with the
list of errors mentioned on the wiki). I then have two libs, src/Main.a and
dist-arm/build/Blocks/Blocks.a

I then add either Blocks.a or Main.a to my project (or both, which I've
also tried). Then I build for my device with command-b. Both static libs
are ignored for each architecture and then clang ends in a linker error.
Here is the build log from Xcode: http://lpaste.net/97304 and my setup:
https://gist.github.com/schell/f3a737171ce2f6b1119c and the source:
https://github.com/schell/blocks-ios/

Please let me know if you need more information.

On Fri, Dec 20, 2013 at 4:38 PM, Schell Scivally <efsubenovex at gmail.com>wrote:

> Currently I'm using `arm-apple-darwin10-cabal
> --config-file=path/to/my/arm/config build
>
> The cabal file and the rest of the source can be found at
> https://github.com/schell/blocks-ios/
>
> I'm following the directions at
> https://ghc.haskell.org/trac/ghc/wiki/Building/CrossCompiling/iOS as much
> as possible but I don't really know how to use ghc to build all the files
> in a project (when I try it can't find the IOS.Touch module), which is why
> I'm trying to use cabal. That wiki page says nothing of using cabal so I'm
> assuming that I'm in dragon territory with most of this, so forgive me if
> I'm making some obvious mistake.
>
>
>
> On Fri, Dec 20, 2013 at 4:27 PM, Maxwell Swadling <
> maxwellswadling at gmail.com> wrote:
>
>> How are you compiling the static library? What command are you using?
>>
>> __END__
>> Maxwell Swadling
>>
>> On 21 Dec 2013, at 10:24 am, Schell Scivally <efsubenovex at gmail.com>
>> wrote:
>>
>> Carter pointed out I only mentioned the warning. ld spits out a warning
>> and then the build fails in the linking phase because the static lib was
>> ignored and not linked, making the main() provided by the lib undefined:
>>
>> ld: warning: ignoring file
>> /Users/schell/Code/blocks-ios/Blocks/dist-arm/build/Blocks/Blocks.a, file
>> was built for archive which is not the architecture being linked (armv7):
>> /Users/schell/Code/blocks-ios/Blocks/dist-arm/build/Blocks/Blocks.a
>>
>> ld: warning: ignoring file
>> /Users/schell/Code/blocks-ios/Blocks/dist-i386/build/Blocks/Blocks.a, file
>> was built for archive which is not the architecture being linked (armv7):
>> /Users/schell/Code/blocks-ios/Blocks/dist-i386/build/Blocks/Blocks.a
>>
>> Undefined symbols for architecture armv7:
>>
>>   "_main", referenced from:
>>
>>      implicit entry/start for main executable
>>
>>      (maybe you meant: _c_main)
>>
>> ld: symbol(s) not found for architecture armv7
>>
>> clang: error: linker command failed with exit code 1 (use -v to see
>> invocation)
>>
>>
>> On Fri, Dec 20, 2013 at 3:05 PM, Carter Schonwald <
>> carter.schonwald at gmail.com> wrote:
>>
>>> A warning isn't an error.  Was there an error or did things work ?
>>>
>>>
>>> On Friday, December 20, 2013, Schell Scivally wrote:
>>>
>>>> I fixed my earlier problems with compiling primitive and vector by
>>>> re-compiling ghc-iphone HEAD. It seems now that I can use
>>>> arm/i386-apple-darwin10/11-cabal to build a static lib, but when I try to
>>>> link it in my Xcode project I get ld warnings:
>>>>
>>>> ld: warning: ignoring file
>>>> /Users/schell/Code/blocks-ios/Blocks/dist-arm/build/Blocks/Blocks.a, file
>>>> was built for archive which is not the architecture being linked (i386):
>>>> /Users/schell/Code/blocks-ios/Blocks/dist-arm/build/Blocks/Blocks.a
>>>>
>>>> I get one of those for each architecture being built (armv7, armv7s,
>>>> arm64, i386). Here are some details on my setup:
>>>> https://gist.github.com/schell/f3a737171ce2f6b1119c
>>>>
>>>> Any help would be much appreciated! :)
>>>> --
>>>> Schell Scivally
>>>> http://blog.efnx.com
>>>> http://github.com/schell
>>>> http://twitter.com/schellsan
>>>>
>>>
>>
>>
>> --
>> Schell Scivally
>> http://blog.efnx.com
>> http://github.com/schell
>> http://twitter.com/schellsan
>>
>> _______________________________________________
>> iPhone mailing list
>> iPhone at haskell.org
>> http://www.haskell.org/mailman/listinfo/iphone
>>
>>
>
>
> --
> Schell Scivally
> http://blog.efnx.com
> http://github.com/schell
> http://twitter.com/schellsan
>

-- 
Schell Scivally
http://blog.efnx.com
http://github.com/schell
http://twitter.com/schellsan
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