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From:Warren Young Date:February 24 2009 1:02am
Subject:Re: on a 64bit platform
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On Feb 23, 2009, at 7:21 AM, Jim Graf wrote:

> I compile and install some 3rd
> party lib where ever I think it ought to be and then create a .pc  
> file for
> that build/install.

Actually, pkg-config support is on the Wishlist already.  It's quite  
possible to generate this file at the end of the ./configure process,  
containing the proper directories, and install it automatically.   
Supporting it would indeed ease the 32/64-bit problem.

Thanks for posting your pkg-config files.  I may use those as a base  
for adding this to MySQL++....unless you submit it as a patch first. ;)

> A long winded way of my saying I don't think mysql++ should attempt to
> figure out if it is going to be compiled 32 or 64 bit or where to  
> install
> itself.

I think I'm with you on the general policy ideas and their value, but  
keep in mind that the core problem we're dealing with here is people  
who build the library without options and then expect it to just  
work.  These users aren't telling us their policy, they're just  
accepting Autoconf's default policy, which does the wrong thing in  
some situations.

It will be important to keep this distinction in mind.  I have no wish  
to override users like you, Jim, who have a strong opinion on where  
things go.

The motivation to try and fix this isn't any different from the  
reasoning behind making autoconf search in likely locations for the C  
API files if we don't get --with-mysql* flags.

We can't solve everything, of course.  If MySQL++ did somehow figure  
out that it should go in lib64 on a particular Linux, it'll be /usr/ 
local/lib64 by default, not /usr/lib64, which isn't in the default, in my experience.  But, at least the files go into the  
"correct" location in this instance.

Another trap: how do we tell that we're building a 32-bit library on a  
64-bit aware system?

> Keep the third party
> lib simple and push the build/install complexity to the user.

The whole point of using third-party wrapper libraries like MySQL++ is  
that they abstract away details you don't really want to cope with.   
If the user doesn't specify install locations, they're effectively  
saying that path names are another thing they don't want to cope  
with.  That brings the issue into MySQL++'s scope.
Thread on a 64bit platformRobert Simmons22 Feb
  • Re: on a 64bit platformRemi Collet22 Feb
  • Re: on a 64bit platformWarren Young23 Feb
    • Re: on a 64bit platformJim Graf23 Feb
      • Re: on a 64bit platformRobert Simmons23 Feb
        • Re: on a 64bit platformJim Graf23 Feb
        • Re: on a 64bit platformJonathan Wakely24 Feb
      • Re: on a 64bit platformWarren Young24 Feb