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Today's Topics:
1. Re: Use mysql-simple (OS X and dymanic library trouble)
(emacstheviking)
----------------------------------------------------------------------
Message: 1
Date: Sun, 26 Oct 2014 08:28:51 +0000
From: emacstheviking <[email protected]>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Subject: Re: [Haskell-beginners] Use mysql-simple (OS X and dymanic
library trouble)
Message-ID:
<CAEiEuUJVyuvddq_-kB6bfpmHu-QZSgPFM_vpgJsTAX15Em+=q...@mail.gmail.com>
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Didn't somebody produce a 100% Haskell mysql client a while back?
On 25 October 2014 16:30, Brandon Allbery <[email protected]> wrote:
> On Sat, Oct 25, 2014 at 11:22 AM, Christian Sperandio <
> [email protected]> wrote:
>
>> Thanks for the trick :)
>>
>> The solution is perhaps to try another mysql library :/
>>
>
> It's the nonstandard location that is the problem, really. The
> --extra-lib-dirs thing should have caused the special location to be used,
> but it relies on whoever wrote the bindings paying attention to
> extra-lib-dirs.
>
> On Linux, you have /etc/ld.so.conf as a list of directories to search for
> shared objects and LD_LIBRARY_PATH to add extra directories to it. On OS X,
> shared library paths are normally compiled into the things that use them
> and DYLD_LIBRARY_PATH overrides this completely (which means setting it can
> cause all programs to fail to find any shared libraries, oops!).
> DYLD_FALLBACK_LIBRARY_PATH is tried if it can't find the shared library at
> its normal location, which is risky but safer than DYLD_LIBRARY_PATH.
>
> If that shared object /Users/batman/Library/Haskell/
> ghc-7.8.3-x86_64/lib/mysql-0.1.1.7/libHSmysql-0.1.1.7-ghc7.8.3.dylib was
> built with the right option (-headerpad_max_install_names, IIRC) then you
> may be able to use install_name_tool to fix the shared object path in it.
> You'll need to use otool -L to check what name is there and then
> install_name_tool to replace it.
>
> Alternately you can check with otool -L what pathname was stored in the
> mysql shared library itself and maybe fix that with install_name_tool.
>
> --
> brandon s allbery kf8nh sine nomine
> associates
> [email protected]
> [email protected]
> unix, openafs, kerberos, infrastructure, xmonad
> http://sinenomine.net
>
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